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Artigos de revistas sobre o tema "OER reaction"

Autor: Grafiati
Publicado: 22 de fevereiro de 2025
Última modificação: 31 de julho de 2025

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1

Rahman, Sheikh Tareq, Kyong Yop Rhee, and Soo-Jin Park. "Nanostructured multifunctional electrocatalysts for efficient energy conversion systems: Recent perspectives." Nanotechnology Reviews 10, no. 1 (2021): 137–57. http://dx.doi.org/10.1515/ntrev-2021-0008.

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Abstract Electrocatalysts play a significant performance in renewable energy conversion, supporting several sustainable methods for future technologies. Because of the successful fabrication of distinctive oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) electrocatalysts, bifunctional ORR/OER and HER/OER electrocatalysts have become a hot area of contemporary research. ORR, OER, and HER have gained considerable attention because of their strong performance in different energy conversion and storage devices, including water-splitting device
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Yan, Zhenwei, Shuaihui Guo, Zhaojun Tan, et al. "Research Advances of Non-Noble Metal Catalysts for Oxygen Evolution Reaction in Acid." Materials 17, no. 7 (2024): 1637. http://dx.doi.org/10.3390/ma17071637.

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Water splitting is an important way to obtain hydrogen applied in clean energy, which mainly consists of two half-reactions: hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). However, the kinetics of the OER of water splitting, which occurs at the anode, is slow and inefficient, especially in acid. Currently, the main OER catalysts are still based on noble metals, such as Ir and Ru, which are the main active components. Hence, the exploration of new OER catalysts with low cost, high activity, and stability has become a key issue in the research of electrolytic water hydrog
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3

Morales, Dulce M., Mariya A. Kazakova, Maximilian Purcel, Justus Masa, and Wolfgang Schuhmann. "The sum is more than its parts: stability of MnFe oxide nanoparticles supported on oxygen-functionalized multi-walled carbon nanotubes at alternating oxygen reduction reaction and oxygen evolution reaction conditions." Journal of Solid State Electrochemistry 24, no. 11-12 (2020): 2901–6. http://dx.doi.org/10.1007/s10008-020-04667-2.

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Abstract Successful design of reversible oxygen electrocatalysts does not only require to consider their activity towards the oxygen reduction (ORR) and the oxygen evolution reactions (OER), but also their electrochemical stability at alternating ORR and OER operating conditions, which is important for potential applications in reversible electrolyzers/fuel cells or metal/air batteries. We show that the combination of catalyst materials containing stable ORR active sites with those containing stable OER active sites may result in a stable ORR/OER catalyst if each of the active components can s
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4

Hong, Yu-Rim, Sungwook Mhin, Jiseok Kwon, Won-Sik Han, Taeseup Song, and HyukSu Han. "Synthesis of transition metal sulfide and reduced graphene oxide hybrids as efficient electrocatalysts for oxygen evolution reactions." Royal Society Open Science 5, no. 9 (2018): 180927. http://dx.doi.org/10.1098/rsos.180927.

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The development of electrochemical devices for renewable energy depends to a large extent on fundamental improvements in catalysts for oxygen evolution reactions (OERs). OER activity of transition metal sulfides (TMSs) can be improved by compositing with highly conductive supports possessing a high surface-to-volume ratio, such as reduced graphene oxide (rGO). Herein we report on the relationship between synthetic conditions and the OER catalytic properties of TMSs and rGO (TMS–rGO) hybrids. Starting materials, reaction temperature and reaction time were controlled to synergistically boost the
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5

Kim, Yohan, Seongmin Kim, Minyoung Shim, et al. "Alteration of Oxygen Evolution Mechanisms in Layered LiCoO2 Structures By Intercalation of Alkali Metal Ions." ECS Meeting Abstracts MA2022-01, no. 34 (2022): 1356. http://dx.doi.org/10.1149/ma2022-01341356mtgabs.

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The word ‘Sustainability’, including carbon neutrality, has dominated the direction of social development over the past decade. In particular, energy conversion reactions through electrochemical methods are one of the efficient methods of obtaining small carbon footprint fuels. The oxygen evolution reaction (OER) is a key step in determining the overall reaction efficiency of fuel-related electrochemical reactions such as CO2 reduction reaction and H2 evolution reaction. However, electron transfer is sluggish for OER due to 4 electrons per one O2 molecule. This promotes multiple studies on the
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6

Wan, Xin, Yingjie Song, Hua Zhou, and Mingfei Shao. "Layered Double Hydroxides for Oxygen Evolution Reaction towards Efficient Hydrogen Generation." Energy Material Advances 2022 (September 7, 2022): 1–17. http://dx.doi.org/10.34133/2022/9842610.

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Electrochemical water splitting is one of the effective ways to obtain highly pure hydrogen. However, as one of the two half reactions, oxygen evolution reaction (OER) has a high overpotential, resulting in the low-energy utilization efficiency. Therefore, numerous electrocatalysts have been developed to reduce the energy barrier of OER. Among them, layered double hydroxides (LDHs) are excellent OER electrocatalysts with flexible composition and structure, which have been widely investigated in the past decade. Recent studies have been focusing on the identification of active sites for LDHs du
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7

Fukushima, Tomohiro, Masaki Itatani, and Kei Murakoshi. "(Invited) Evaluation of Oxygen Evolution Reaction Electrodes through Machine-Learning Analysis and in-Situ Electrochemical Spectroscopy." ECS Meeting Abstracts MA2024-02, no. 59 (2024): 4023. https://doi.org/10.1149/ma2024-02594023mtgabs.

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To enhance the catalysis of the oxygen evolution reaction (OER) at water electrolysis electrodes, it is imperative to eliminate the energy-consuming processes involved in multiple electron and proton transfer reactions. We propose employing a combination of machine-learning analysis of electrochemical activity and in-situ electrochemical Raman observation for the OER electrodes. The OER behavior can be categorized based on the contributions of Ni-OH and Ni-OOH, which serve as key OER intermediates. This information is utilized to elucidate the OER behavior through energetic and intermediate an
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8

Chae, Sangwoo, Akihito Shio, Tomoya Kishida, et al. "Synthesis of High-Entropy Perovskite Hydroxides as Bifunctional Electrocatalysts for Oxygen Evolution Reaction and Oxygen Reduction Reaction." Materials 17, no. 12 (2024): 2963. http://dx.doi.org/10.3390/ma17122963.

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Oxygen reduction reaction (ORR) and oxygen evolutionc reaction (OER) are important chemical reactions for a rechargeable lithium–oxygen battery (LOB). Recently, high-entropy alloys and oxides have attracted much attention because they showed good electrocatalytic performance for oxygen evolution reaction (OER) and/or oxygen reduction reaction (ORR). In this study, we aimed to synthesize and characterize CoSn(OH)6 and two types of high-entropy perovskite hydroxides, that is, (Co0.2Cu0.2Fe0.2Mn0.2Mg0.2)Sn(OH)6 (CCFMMSOH) and (Co0.2Cu0.2Fe0.2Mn0.2Ni0.2)Sn(OH)6 (CCFMNSOH). TEM observation and XRD
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9

Lin, Shiru, Haoxiang Xu, Yekun Wang, Xiao Cheng Zeng, and Zhongfang Chen. "Directly predicting limiting potentials from easily obtainable physical properties of graphene-supported single-atom electrocatalysts by machine learning." Journal of Materials Chemistry A 8, no. 11 (2020): 5663–70. http://dx.doi.org/10.1039/c9ta13404b.

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The oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) are three critical reactions for energy-related applications, such as water electrolyzers and metal–air batteries.
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10

Wu, Hengbo, Jie Wang, Wei Jin, and Zexing Wu. "Recent development of two-dimensional metal–organic framework derived electrocatalysts for hydrogen and oxygen electrocatalysis." Nanoscale 12, no. 36 (2020): 18497–522. http://dx.doi.org/10.1039/d0nr04458j.

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Developing efficient and low-cost electrocatalysts with unique nanostructures is of great significance for improved electrocatalytic reactions, including the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR).
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11

Öztürk, Secil, Yu-Xuan Xiao, Dennis Dietrich, et al. "Nickel nanoparticles supported on a covalent triazine framework as electrocatalyst for oxygen evolution reaction and oxygen reduction reactions." Beilstein Journal of Nanotechnology 11 (May 11, 2020): 770–81. http://dx.doi.org/10.3762/bjnano.11.62.

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Covalent triazine frameworks (CTFs) are little investigated, albeit they are promising candidates for electrocatalysis, especially for the oxygen evolution reaction (OER). In this work, nickel nanoparticles (from Ni(COD)2) were supported on CTF-1 materials, which were synthesized from 1,4-dicyanobenzene at 400 °C and 600 °C by the ionothermal method. CTF-1-600 and Ni/CTF-1-600 show high catalytic activity towards OER and a clear activity for the electrochemical oxygen reduction reaction (ORR). Ni/CTF-1-600 requires 374 mV overpotential in OER to reach 10 mA/cm2, which outperforms the benchmark
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12

Jeon, Jaeeun, Kyoung Ryeol Park, Kang Min Kim, et al. "CoFeS2@CoS2 Nanocubes Entangled with CNT for Efficient Bifunctional Performance for Oxygen Evolution and Oxygen Reduction Reactions." Nanomaterials 12, no. 6 (2022): 983. http://dx.doi.org/10.3390/nano12060983.

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Exploring bifunctional electrocatalysts to lower the activation energy barriers for sluggish electrochemical reactions for both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are of great importance in achieving lower energy consumption and higher conversion efficiency for future energy conversion and storage system. Despite the excellent performance of precious metal-based electrocatalysts for OER and ORR, their high cost and scarcity hamper their large-scale industrial application. As alternatives to precious metal-based electrocatalysts, the development of earth-abu
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13

Yao, Bin, Youzhou He, Song Wang, Hongfei Sun, and Xingyan Liu. "Recent Advances in Porphyrin-Based Systems for Electrochemical Oxygen Evolution Reaction." International Journal of Molecular Sciences 23, no. 11 (2022): 6036. http://dx.doi.org/10.3390/ijms23116036.

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Oxygen evolution reaction (OER) plays a pivotal role in the development of renewable energy methods, such as water-splitting devices and the use of Zn–air batteries. First-row transition metal complexes are promising catalyst candidates due to their excellent electrocatalytic performance, rich abundance, and cheap price. Metalloporphyrins are a class of representative high-efficiency complex catalysts owing to their structural and functional characteristics. However, OER based on porphyrin systems previously have been paid little attention in comparison to the well-described oxygen reduction r
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14

Sui, Chenxi, Kai Chen, Liming Zhao, Li Zhou, and Qu-Quan Wang. "MoS2-modified porous gas diffusion layer with air–solid–liquid interface for efficient electrocatalytic water splitting." Nanoscale 10, no. 32 (2018): 15324–31. http://dx.doi.org/10.1039/c8nr04082f.

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The formation and adsorption of bubbles on electrodes weaken the efficiency of gas evolution reactions such as the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) by hindering proton transfer and consuming nucleation energy.
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15

Xu, Junhua, Daobin Liu, Carmen Lee, et al. "Efficient Electrocatalyst Nanoparticles from Upcycled Class II Capacitors." Nanomaterials 12, no. 15 (2022): 2697. http://dx.doi.org/10.3390/nano12152697.

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To move away from fossil fuels, the electrochemical reaction plays a critical role in renewable energy sources and devices. The anodic oxygen evolution reaction (OER) is always coupled with these reactions in devices but suffers from large energy barriers. Thus, it is important for developing efficient OER catalysts with low overpotential. On the other hand, there are large amounts of metals in electronic waste (E-waste), especially various transition metals that are promising alternatives for catalyzing OER. Hence, this work, which focuses on upcycling Class II BaTiO3 Multilayer Ceramic Capac
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16

Kim, Jeheon, Tomohiro Fukushima, Ruifeng Zhou, and Kei Murakoshi. "Revealing High Oxygen Evolution Catalytic Activity of Fluorine-Doped Carbon in Alkaline Media." Materials 12, no. 2 (2019): 211. http://dx.doi.org/10.3390/ma12020211.

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Oxygen evolution reactions (OER) are important reactions for energy conversion. Metal-free carbon-based catalysts potentially contribute to the catalytic materials for OER. However, it has been difficult to understand the intrinsic catalytic activity of carbon materials, due to catalyst decomposition over the course of long-term reactions. Here, we report high oxygen evolution reaction catalytic activity of F-doped carbon in alkaline media. Intrinsic OER activity was evaluated from a combination of measurements using a rotating disk electrode and O2 sensor. The F-doped carbon catalyst is a hig
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17

Ikezawa, Atsunori, Kotaro Seki, and Hajime Arai. "Rational Placement of Catalysts for Oxygen Reduction and Evolution Reactions Based on the Reaction Sites in Porous Gas Diffusion Electrodes." ECS Meeting Abstracts MA2022-02, no. 4 (2022): 522. http://dx.doi.org/10.1149/ma2022-024522mtgabs.

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Metal-air secondary batteries using alkaline electrolyte solutions are promising candidates for next-generation large-scale energy storage systems because of their potential high capacity, low cost, and high safety standard. However, large overpotential of bifunctional air electrodes hindered their wide applications. Recently, increasing research on electrocatalysts for oxygen reduction reaction (ORR) and oxygen reduction reaction (OER) has been conducted to reduce the overpotential, and many active catalysts have been developed. On the other hand, formation of reaction sites is also important
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18

Chen, Xiaodong, Jianqiao Liu, Tiefeng Yuan, et al. "Recent advances in earth-abundant first-row transition metal (Fe, Co and Ni)-based electrocatalysts for the oxygen evolution reaction." Energy Materials 2, no. 4 (2022): 28. http://dx.doi.org/10.20517/energymater.2022.30.

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The oxygen evolution reaction (OER) is of fundamental importance as a half reaction and rate-controlling step that plays a predominant function in improving the energy storage and conversion efficiency during the electrochemical water-splitting process. In this review, after briefly introducing the fundamental mechanism of the OER, we systematically summarize the recent research progress for nonprecious-metal-based OER electrocatalysts of representative first-row transition metal (Fe, Co and Ni)-based composite materials. We analyze the effects of the physicochemical properties, including morp
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19

Milikić, Jadranka, Aldona Balčiūnaitė, Zita Sukackienė, et al. "Bimetallic Co-Based (CoM, M = Mo, Fe, Mn) Coatings for High-Efficiency Water Splitting." Materials 14, no. 1 (2020): 92. http://dx.doi.org/10.3390/ma14010092.

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Bimetallic cobalt (Co)-based coatings were prepared by a facile, fast, and low-cost electroless deposition on a copper substrate (CoFe, CoMn, CoMo) and characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy and X-ray diffraction analysis. Prepared coatings were thoroughly examined for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solution (1 M potassium hydroxide, KOH) and their activity compared to that of Co and Ni coatings. All five coatings showed activity for both reactions, where CoMo and Co showed the highest activity
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20

Bošnjaković, Jovana, Maja Stevanović, Marija Mihailović, et al. "Activity and Operational Loss of IrO2-Ta2O5/Ti Anodes During Oxygen Evolution in Acidic Solutions." Metals 15, no. 7 (2025): 721. https://doi.org/10.3390/met15070721.

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The oxygen-evolving IrO2-Ta2O5/Ti anode (OEA), primarily used in electrolyzers for plating, metal powder production, electrowinning (EW), and water electrolysis, is analyzed. This study focuses on the distribution of oxygen evolution reaction (OER) activity and the associated operational loss over the randomized OEA texture. The OER activity and its distribution across the IrO2-Ta2O5 coating surface are key factors that influence EW operational challenges and the lifecycle of OEA in EW processes. To understand the OER activity distribution over the coating’s randomized texture, we performed an
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21

Yao, Qiufang, Yanping Xiao, Haoqing Wang, Haobin Zhong, and Tongtong Wang. "Multi-Functional Amorphous Nickel Phosphide Electrocatalytic Reduction of Nitrate for Ammonia Production: Unraveling the Anode-Driven Enhancement Mechanism." Sustainability 17, no. 9 (2025): 3835. https://doi.org/10.3390/su17093835.

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The electrocatalytic reduction of nitrate (ERN) to ammonia offers a promising route to address energy shortages and environmental pollution, but its practical application is hindered by low selectivity due to complex eight-electron transfer pathways and high energy consumption (EC) from the kinetically sluggish oxygen evolution reaction (OER). This study proposes a dual strategy: (1) designing a multi-functional self-supported ANP electrode via vapor deposition to enhance ERN activity and (2) replacing the OER with thermodynamically favorable anodic reactions (urea oxidation reaction (UOR), so
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22

Dymerska, Anna, Wojciech Kukułka, Marcin Biegun, and Ewa Mijowska. "Spinel of Nickel-Cobalt Oxide with Rod-Like Architecture as Electrocatalyst for Oxygen Evolution Reaction." Materials 13, no. 18 (2020): 3918. http://dx.doi.org/10.3390/ma13183918.

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The renewable energy technologies require electrocatalysts for reactions, such as the oxygen and/or hydrogen evolution reaction (OER/HER). They are complex electrochemical reactions that take place through the direct transfer of electrons. However, mostly they have high over-potentials and slow kinetics, that is why they require electrocatalysts to lower the over-potential of the reactions and enhance the reaction rate. The commercially used catalysts (e.g., ruthenium nanoparticles—Ru, iridium nanoparticles—Ir, and their oxides: RuO2, IrO2, platinum—Pt) contain metals that have poor stability,
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23

García Caballero, Ariadna D., and Jesus Adrián Diaz-Real. "Alternative Technique to RDE to Evaluate Photoelectrocatalysts for ORR." ECS Meeting Abstracts MA2024-01, no. 44 (2024): 2438. http://dx.doi.org/10.1149/ma2024-01442438mtgabs.

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The scarcity of fuels due to the growing energy demand has encouraged research into topics such as energy conversion with materials that can take advantage of solar energy. Such situations have promote the emergence of various new materials to assist reactions of special interest such as oxygen reactions. (Oxygen Reduction Reaction, ORR and Oxygen Evolution Reaction, OER). Thus, numerous materials are emerging with the photoelectrocatalytic activity towards OER and ORR reactions. To evaluate the photo-assisted OER requires technical conditions that a rotating disk electrode (RDE) does not sati
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24

Elbaz, Lior, and Wenjamin Moschkowitsch. "Electrocatalyzing Oxygen Evolution Reaction with Nifeooh Aerogels." ECS Meeting Abstracts MA2022-02, no. 44 (2022): 1680. http://dx.doi.org/10.1149/ma2022-02441680mtgabs.

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Increasing the production capacity of electrical energy to fulfill the continuously rising global demand, while simultaneously trying to avoid greenhouse gas emissions in the process, and being environmentally sound, is one of the largest challenges of this era.One way to achieve it is to rely on hydrogen for energy storage. Nowadays, most of the hydrogen produced is mainly from fossil fuels, and the emission of detrimental gasses is only shifted. To get to a true green hydrogen, it is necessary to produce it in emissions-free processes. One method to achieve this is to use renewable energies
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Fukushima, Tomohiro. "(Invited) Evaluation of Oxygen Evolution Activity from the Intermediate Analysis." ECS Meeting Abstracts MA2025-01, no. 39 (2025): 2034. https://doi.org/10.1149/ma2025-01392034mtgabs.

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Oxygen evolution reaction (OER) is the counterpart in the hydrogen production by the water electrolysis. It is important to unveil the OER intermediates toward the effective green hydrogen production. In this study, we conducted the in-situ Raman observation of the OER intermediates over Ni-based electrodes in the alkaline electrolyte conditions. Intense Raman peaks were observed from the Ni-OH, Ni-OOH, and active oxygen species as OER intermediates. The OER behavior can be classified with the reactants, such as OH− and H2O. In addition, machine learning analysis of the OER intermediates can f
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26

Su, Zhaochang, Biyi Huang, Fan Liao, and Jiangping Peng. "Through the anodic oxidation of sodium sulfite aqueous solution to achieve energy-saving cathodic hydrogen production." Journal of Physics: Conference Series 2975, no. 1 (2025): 012002. https://doi.org/10.1088/1742-6596/2975/1/012002.

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Abstract Hydrogen energy is considered an important part of the future energy system. As a method of hydrogen production with high energy efficiency and low pollution, electrolysis of water has the problems of heavy dependence on fresh water and high cost. Therefore, seawater electrolysis technology for hydrogen production has been proposed. However, hydrogen production from seawater faces challenges such as high anodic oxygen evolution reaction (OER) potential and the introduction of Cl- side reactions. Replacing OER with SO2 electrooxidation reaction (SO2OR) is an effective way to overcome t
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Shafath, Sadiyah, Khulood Logade, Anand Kumar, and Ibrahim Abu Reesh. "(Digital Presentation) Multifunctional Lanthanum Perovskite Electrocatalysts (LaMnxCo1-xO3 (0≤x≤1)) for Alkaline Medium Methanol Oxidation and Oxygen Catalysis." ECS Meeting Abstracts MA2022-02, no. 43 (2022): 1629. http://dx.doi.org/10.1149/ma2022-02431629mtgabs.

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Lanthanum-based synthetic perovskites (LaMnxCo1-xO3 (0≤x≤1)) were synthesized using a solution combustion synthesis technique with variable ratios of Co and Mn to investigates the surface and electrocatalytic property (activity and stability of catalysts) for methanol oxidation reaction (MOR), oxygen reduction reaction (ORR), oxygen evolution reaction (OER) under alkaline medium (KOH). The structural and morphological characterizations of the synthesized catalyst were performed by XRD, FTIR, SEM, TEM and XPS techniques. The structural and chemical properties systematically changed by varying t
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Cheng, J., P. Ganesan, Z. Wang та ін. "Bifunctional electrochemical properties of La0.8Sr0.2Co0.8M0.2O3−δ (M = Ni, Fe, Mn, and Cu): efficient elemental doping based on a structural and pH-dependent study". Materials Advances 3, № 1 (2022): 272–81. http://dx.doi.org/10.1039/d1ma00632k.

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Perovskite oxides with a low cost and high catalytic activity are considered as suitable candidates for the oxygen evolution reaction (OER)/oxygen reduction reaction (ORR), but most of them favour only either the ORR or the OER.
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Yin, Shikang, Xiaoxue Zhao, Enhui Jiang, Yan Yan, Peng Zhou, and Pengwei Huo. "Boosting water decomposition by sulfur vacancies for efficient CO2 photoreduction." Energy & Environmental Science 15, no. 4 (2022): 1556–62. http://dx.doi.org/10.1039/d1ee03764a.

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As the rate-determining half reaction (OER) in the overall CO2 photoreduction, the four-electron-involving OER on S-vacancy sites was favored, therefore facilitating the hole-elimination/proton release and unleashing the CO2 reduction half reaction.
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Hongxia, Wang, H. L. Zhang Kelvin, P. Hofmann Jan, A. de la Peña O'Shea Victor, and E. Oropeza Freddy. "The electronic structure of transition metal oxides for oxygen evolution reaction." Journal of Materials Chemistry A 9, no. 2021 (2021): 19465. https://doi.org/10.5281/zenodo.7692408.

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Electrolysis of water to produce hydrogen and oxygen is a promising pathway for the storage of renewable energy in form of chemical fuels. The efficiency of the overall process is usually limited by the sluggish kinetics of the oxygen evolution reaction (OER) due to a complex four-electron/proton transfer mechanism. Therefore, the most crucial step for water electrolysis to become a widespread industrial process is to develop efficient electrocatalysts capable of driving the OER at a low overpotential. In this article, we present a review of the recent understanding of low-cost transition meta
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Xie, Wenli, Bin Cui, Desheng Liu, Haicai Huang, and Chuanlu Yang. "Rational Design of Covalent Organic Frameworks-Based Single Atom Catalysts for Oxygen Evolution Reaction and Oxygen Reduction Reaction." Molecules 30, no. 7 (2025): 1505. https://doi.org/10.3390/molecules30071505.

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The rational design of high-performance catalysts for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is essential for the development of clean and renewable energy technologies, particularly in fuel cells and metal-air batteries. Two-dimensional (2D) covalent organic frameworks (COFs) possess numerous hollow sites, which contribute to the stable anchoring of transition metal (TM) atoms and become promising supports for single atom catalysts (SACs). Herein, the OER and ORR catalytic performance of a series of SACs based on TQBQ-COFs were systematically investigated thro
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Trębala, Michał, and Agata Łamacz. "Modern Catalytic Materials for the Oxygen Evolution Reaction." Molecules 30, no. 8 (2025): 1656. https://doi.org/10.3390/molecules30081656.

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The oxygen evolution reaction (OER) has, in recent years, attracted great interest from scientists because of its prime role in a number of renewable energy technologies. It is one of the reactions that occurs during hydrogen production through water splitting, is used in rechargeable metal–air batteries, and plays a fundamental role in regenerative fuel cells. Therefore, there is an emerging need to develop new, active, stable, and cost-effective materials for OER. This review presents the latest research on various groups of materials, showing their potential to be used as OER electrocatalys
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Asad, Muhammad, Afzal Shah, Faiza Jan Iftikhar, Rafia Nimal, Jan Nisar, and Muhammad Abid Zia. "Development of a Binder-Free Tetra-Metallic Oxide Electrocatalyst for Efficient Oxygen Evolution Reaction." Sustainable Chemistry 3, no. 3 (2022): 286–99. http://dx.doi.org/10.3390/suschem3030018.

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Water splitting has emerged as a sustainable, renewable and zero-carbon-based energy source. Water undergoes hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) during electrolysis. However, among these half-cell reactions, OER is more energy demanding. Hence, the development of efficient catalysts for speeding up OER is a key for boosting up the commercial viability of electrolyzers. Typical binders like Nafion and PVDF are not preferred for designing commercial electrocatalysts as they can compromise conductivity. Thus, we have designed a novel and cost-effective binder-fre
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Elbaz, Lior. "(Keynote) Development of Advanced High Surface Area Metal Oxide Aerogels for Oxygen Evolution Reaction Electrocatalysis." ECS Meeting Abstracts MA2023-02, no. 58 (2023): 2793. http://dx.doi.org/10.1149/ma2023-02582793mtgabs.

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The growing demand to shift energy production to sustainable sources poses some serious challenges. One of the biggest are the intermittent energy (wind and sun). To mitigate this issue, there is a critical need for large energy storage technologies, to store excess energy during the peak hours and carry it over for the rest of the day, weeks, and seasons. The best way to do so is through the Hydrogen Economy. At the heart of this scheme is green hydrogen production using water electrolysis. There are two distinct chemical reactions that take place in water electrolyzers: the cathodic hydrogen
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35

Kim, Kyung-Hwan, and Yun-Hyuk Choi. "Surface oxidation of cobalt carbonate and oxide nanowires by electrocatalytic oxygen evolution reaction in alkaline solution." Materials Research Express 9, no. 3 (2022): 034001. http://dx.doi.org/10.1088/2053-1591/ac5f89.

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Abstract The electrocatalytic water electrolysis is the most eco-friendly technique for hydrogen generation, which is governed by the electrode reaction kinetics involving cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER) in common alkaline electrolytes. Cobalt oxide (Co3O4) and related compounds are the most efficient OER catalysts, replacing the noble metals. In this work, the surface oxidations of the cobalt carbonate (Co(CO3)0.5OH·0.11H2O) and Co3O4 nanowires during the OER are carefully investigated by contrasting the polarization curves, Tafel plots, a
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36

Li, Yaxin, Xin Yu, Juan Gao, and Yurong Ma. "Hierarchical Ni2P/Zn-Ni-P Nanosheet Array for Efficient Energy-Saving Hydrogen Evolution and Hydrazine Oxidation." Journal of Materials Chemistry A, 2023. http://dx.doi.org/10.1039/d2ta08366c.

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Electrochemical overall water splitting (OWS) includes two half reactions of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Due to the limitation of the slow kinetic process of OER,...
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37

Wang, Zeyu, William A. Goddard, and Hai Xiao. "Potential-dependent transition of reaction mechanisms for oxygen evolution on layered double hydroxides." Nature Communications 14, no. 1 (2023). http://dx.doi.org/10.1038/s41467-023-40011-8.

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AbstractOxygen evolution reaction (OER) is of crucial importance to sustainable energy and environmental engineering, and layered double hydroxides (LDHs) are among the most active catalysts for OER in alkaline conditions, but the reaction mechanism for OER on LDHs remains controversial. Distinctive types of reaction mechanisms have been proposed for the O-O coupling in OER, yet they compose a coupled reaction network with competing kinetics dependent on applied potentials. Herein, we combine grand-canonical methods and micro-kinetic modeling to unravel that the nature of dominant mechanism fo
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38

Maduraiveeran, Govindhan. "Transition metal nanomaterial-based electrocatalysts for water and CO2 electrolysis: preparation, catalytic activity, and prospects." Frontiers in Energy Research 12 (October 24, 2024). http://dx.doi.org/10.3389/fenrg.2024.1433103.

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The production of hydrogen (H2) and multi-carbon fuels through water electrolysis (oxygen evolution reaction (OER)/hydrogen evolution reaction (HER)) and water–CO2 co-electrolysis (OER/CO2 reduction reaction (CO2RR)), respectively, is supposed to be the emergent energy carrier. These electrochemical processes are essential chemical conversion pathways that initiate the changes toward production of renewable energy. This review summarizes the systematic design of earth-abundant transition metal-based nanomaterials and their electrocatalytic activities toward electrochemical energy conversion re
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Yu, Jiayang, Tianmi Tang, Jingqi Guan, and Yupeng Guo. "Improving the oxygen evolution performance of iron–manganese oxyhydroxides by Cr doping." Chemical Communications, 2025. https://doi.org/10.1039/d5cc00389j.

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The slow oxygen evolution reaction (OER) dynamics affects the energy efficiency of many electrocatalytic reactions. To accelerate the commercialization of electrolytic water, it needs to develop efficient and economical OER...
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40

., Krishankant, Aashi Chauhan, Zubair Ahmed, et al. "Nano-interfaced tungsten oxide inwrought with layer double hydroxides for oxygen evolution reaction." Sustainable Energy & Fuels, 2022. http://dx.doi.org/10.1039/d2se00929c.

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Layered double-hydroxides (LDHs) have emerged as a benchmark catalyst for oxygen evolution reactions (OER). To accelerate the reaction kinetics for OER, it became important to design a hybrid interfacial material...
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41

Chen, Xiaodong, Zhiyuan Zhang, Ya Chen, et al. "Research advances in earth-abundant-element-based electrocatalysts for oxygen evolution reaction and oxygen reduction reaction." Energy Materials, 2023. http://dx.doi.org/10.20517/energymater.2023.12.

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The oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are crucial half-reactions of green electrochemical energy storage and conversion technologies, such as electrochemical water-splitting devices and regenerative fuel cells. Researchers always committed to synthesizing earth-abundant-element-based nanomaterials as high-efficiency electrocatalysts for realizing their industrial applications. In this review, we briefly elaborate on the underlying mechanisms of OER and ORR during the electrochemical process. Then, we systematically sum up the recent research progress in repres
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42

Huang, Xianggang, Xin Wang, Mengling Zhang, et al. "Manganese- and Selenium-codoping CeO2@Co3O4 Porous Core-shell Nanospheres for Enhanced Oxygen Evolution Reaction." Energy Advances, 2023. http://dx.doi.org/10.1039/d2ya00315e.

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As one of the semi-reactions of water splitting, electrocatalytic oxygen evolution reaction (OER) is a key process to generate sustainable energy. Co-based spinel oxides are deemed as promising OER electrocatalysts,...
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43

Abdollahi, Maliheh, Sara Al Sbei, Miriam A. Rosenbaum, and Falk Harnisch. "The oxygen dilemma: The challenge of the anode reaction for microbial electrosynthesis from CO2." Frontiers in Microbiology 13 (August 3, 2022). http://dx.doi.org/10.3389/fmicb.2022.947550.

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Microbial electrosynthesis (MES) from CO2 provides chemicals and fuels by driving the metabolism of microorganisms with electrons from cathodes in bioelectrochemical systems. These microorganisms are usually strictly anaerobic. At the same time, the anode reaction of bioelectrochemical systems is almost exclusively water splitting through the oxygen evolution reaction (OER). This creates a dilemma for MES development and engineering. Oxygen penetration to the cathode has to be excluded to avoid toxicity and efficiency losses while assuring low resistance. We show that this dilemma derives a st
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44

Huang, Shih‐Ching, Hsiang‐Chun Yu, Chun‐Kuo Peng, Yan‐Gu Lin, and Chia‐Yu Lin. "P‐Doped NiFe Alloy‐Based Oxygen Evolution Electrocatalyst for Efficient and Stable Seawater Splitting and Organic Electrosynthesis at Neutral pH." Small, December 24, 2024. https://doi.org/10.1002/smll.202408957.

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AbstractDevelopment of high‐performance and inexpensive electrocatalysts for oxygen evolution reaction (OER) at neutral pH is important for direct seawater splitting and organic electrosynthesis but remains challenging due to the sluggish OER kinetics and diverse side reactions inherent to the constituents of working electrolytes. Herein, we report on a P:NiFe electrode, containing P‐doped NiFe alloy, as an excellent electrocatalyst for hydrogen evolution reaction (HER) and OER pre‐catalyst for efficient OER in both seawater and organic electrolyte for adiponitrile (ADN) electrosynthesis at ne
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45

Xiao, Zhifei, Haoliang Huang, Sixia Hu, et al. "Bifunctional Square‐Planar NiO4 Coordination of Topotactic LaNiO2.0 Films for Efficient Oxygen Evolution Reaction." Small Methods, November 27, 2023. http://dx.doi.org/10.1002/smtd.202300793.

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AbstractThe high‐efficient and low‐cost oxygen evolution reaction (OER) is decisive for applications of oxide catalysts in metal‐air batteries, electrolytic cells, and energy‐storage technologies. Delicate regulations of active surface and catalytic reaction pathway of oxide materials principally determine thermodynamic energy barrier and kinetic rate during catalytic reactions, and thus have crucial impacts on OER performance. Herein, a synergistic modulation of catalytically active surface and reaction pathway through facile topotactic transformations switching from perovskite (PV) LaNiO3.0
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46

Hu, Mengyu, Hanzhi Yu, Chong Chen, Yukun Zhang, Changjiang Hu, and Jun Ma. "Gamma-rays induced strong coupling between Ru nanoparticle and cobalt-based metal organic framework nanolayer for methanol oxidation and hydrogen evolution." New Journal of Chemistry, 2024. http://dx.doi.org/10.1039/d4nj04418e.

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The development of anodic reactions with accelerated kinetics to replace the oxygen evolution reaction (OER) reaction to promote the hydrogen evolution reaction (HER) with high value-added production is of crucial...
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47

Deng, Bohan, Guang-Qiang Yu, Wei Zhao, et al. "A Self-Circulating Pathway for Oxygen Evolution Reaction." Energy & Environmental Science, 2023. http://dx.doi.org/10.1039/d3ee02360e.

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The oxygen evolution reaction (OER) suffers from its sluggish kinetics of traditional four-electron-transfer pathways (4e--OER). Herein, we propose a self-circulating electrochemical-thermal OER mechanism (SET-OER) as a new pathway for high-efficiency...
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48

Wu, Zhong. "Transition Metal Selenides for Oxygen Evolution Reaction." Energy Technology, April 3, 2024. http://dx.doi.org/10.1002/ente.202301574.

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Oxygen evolution reaction (OER) is essential to the water splitting and CO2 reduction reactions, while this reaction is kinetically sluggish and demands the efficient electrocatalyst. Transition metal selenides (TMSes) have gained greater attention as nonprecious metal‐based electrocatalysts due to their low cost, earth abundance, and high efficiency. Typically, TMSe can exhibit superior OER activity to their counterparts such as hydroxides/oxyhydroxides and sulfides. As such, their unique way to boost the catalytic activity is intriguing to researchers and many studies have been recently carr
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Li, Long, Zhanpeng Sheng, Qingqing Xiao, and qiang hu. "Co9S8 core-shell hollow spheres for enhanced oxygen evolution reaction and methanol oxidation reaction by sulfur vacancies engineering." Dalton Transactions, 2023. http://dx.doi.org/10.1039/d3dt03477a.

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Cobalt sulfides, especially Co9S8, have been widely studied as a potential earth-abundant electrocatalyst for many electrochemical reactions such as oxygen evolution reaction (OER) and methanol oxidation reaction (MOR). However, the...
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50

Lole, Gaurav, Vladimir Roddatis, Ulrich Ross, et al. "Dynamic observation of manganese adatom mobility at perovskite oxide catalyst interfaces with water." Communications Materials 1, no. 1 (2020). http://dx.doi.org/10.1038/s43246-020-00070-6.

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Abstract Real time in-situ microscopy imaging of surface structure and atom dynamics of heterogeneous catalysts is an important step for understanding reaction mechanisms. Here, using in-situ environmental transmission electron microscopy (ETEM), we directly visualize surface atom dynamics at manganite perovskite catalyst surfaces for oxygen evolution reaction (OER), which are ≥20 times faster in water than in other ambients. Comparing (001) surfaces of La0.6Sr0.4MnO3 and Pr0.67Ca0.33MnO3 with similar initial manganese valence state and OER activity, but very different OER stability, allows us
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