Tesis sobre el tema "High capacity anode"
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Selden, Tyler M. "SILICON NANOSTRUCTURES FOR HIGH CAPACITY ANODES IN LITHIUM ION BATTERIES". VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/4053.
Texto completoFan, Jui Chin. "The Performance of Structured High-Capacity Si Anodes for Lithium-Ion Batteries". BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5467.
Texto completoPALUMBO, STEFANO. "Study of an off-grid wireless sensors with Li-Ion battery and Giant Magnetostrisctive Material". Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2827717.
Texto completoKang, Chi Won. "Enhanced 3-Dimensional Carbon Nanotube Based Anodes for Li-ion Battery Applications". FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/955.
Texto completoBrumbarov, Jassen [Verfasser], Julia [Akademischer Betreuer] Kunze-Liebhäuser, Peter [Gutachter] Müller-Buschbaum y Julia [Gutachter] Kunze-Liebhäuser. "Si on conductive self-organized TiO2 nanotubes – A safe high capacity anode material for Li-ion batteries : Synthesis, physical and electrochemical characterization / Jassen Brumbarov ; Gutachter: Peter Müller-Buschbaum, Julia Kunze-Liebhäuser ; Betreuer: Julia Kunze-Liebhäuser". München : Universitätsbibliothek der TU München, 2021. http://d-nb.info/1232406198/34.
Texto completoKrause, Andreas, Susanne Dörfler, Markus Piwko, Florian M. Wisser, Tony Jaumann, Eike Ahrens, Lars Giebeler et al. "High Area Capacity Lithium-Sulfur Full-cell Battery with Prelitiathed Silicon Nanowire-Carbon Anodes for Long Cycling Stability". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-217538.
Texto completoKrause, Andreas, Susanne Dörfler, Markus Piwko, Florian M. Wisser, Tony Jaumann, Eike Ahrens, Lars Giebeler et al. "High Area Capacity Lithium-Sulfur Full-cell Battery with Prelitiathed Silicon Nanowire-Carbon Anodes for Long Cycling Stability". Nature Publishing Group, 2016. https://tud.qucosa.de/id/qucosa%3A30116.
Texto completoChih-Hsiang, Yo. "The Synthesis Of High Surface Area Ti Sponges By Halide Conversion Process For Capacitor Anodes". Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1363107584.
Texto completoChen, Hao. "Exploring Advanced Polymeric Binders and Solid Electrolytes for Energy Storage Devices". Thesis, Griffith University, 2021. http://hdl.handle.net/10072/406053.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
Full Text
Chin, Li-Chu y 秦麗筑. "Phosphorus-iron composites for high capacity sodium-ion batteries anode". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/d3u298.
Texto completoLin, Hsuan-Peng y 林炫朋. "Aluminum Phosphide: a High-Capacity Lithium-Ion Battery Anode Material with Ultralong Cyclability". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/nj67z4.
Texto completoLin, Yu-Yen y 林佑彥. "High-capacity carbons derived from peanut shells as anode materials for lithium ion batteries". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/39645151335915553704.
Texto completo國立中央大學
化學工程與材料工程研究所
91
This thesis describes the structural and lithium-insertion properties of pyrolytic carbons derived from peanut shells. Peanut shells were treated with different weight ratios of a proprietary porogenic agent and carbonized between 600 and 900°C. The work covers three areas: (1) optimization of the porogen-to-peanut shell weight ratio (P) and the pyrolysis temperature, (2) comparison of the lithium-insertion properties of carbons obtained from untreated and porogen-treated peanut shells, and (3) charge-discharge studies with pre-lithiated carbons. Porogen treatment was implemented in order to alter the pore structure and effect a manifold increase in the surface area of the carbonaceous product. Both the untreated and porogen-treated shells yielded carbons with poor crystallinity, but the pore diameter of the latter was twice as large and the surface area was 66 times greater than the untreated carbon. Both types of products were primarily non-parallel single sheets of carbons, as determined by the values of their R factors. While porogen can increase the number of uncorrelated graphene fragments, leading to more lithium accommodation sites, the pyrolysis temperature can induce breakage of the links between adjacent sheets and encourage their parallel alignment. The products obtained with P = 5 at 500°C gave a first-cycle lithium insertion capacity of 4765 mAh/g, which is the highest value reported for any lithium-insertion material so far. At a pyrolysis temperature of 600°C, the P = 5 product gave the optimal insertion and deinsertion capacities, their values in the first cycle being 3504 and 1650 mAh/g, respectively. The deinsertion capacity of this sample in the tenth cycle was very high at 1504 mAh/g. However, the irreversible capacities of these carbons, especially in the first cycle, were too large to be practical. The large irreversible capacities were reflected in the cyclic voltammograms of the carbons, where the absence of a significant anodic peak indicated that only part of the inserted lithium could be retrieved. In the case of the P = 0 carbon, lithium insertion was observed below 0.7 V vs. Li+/Li, while in the P = 5 carbon, the insertion process commenced from about 1.3 V. Moreover, the decrease in the insertion current with cycle number was lower in the case of the porogen-treated carbon than with the untreated carbon, suggesting the former had better capacity retention. No distinguishable current peaks were seen in the cyclic voltammograms, indicating lack of any long-range ordering, which precludes staging behavior during the insertion and deinsertion processes. The P = 5 carbon also exhibited higher exchange current densities, which would imply that the kinetics of the insertion reaction was faster than when the carbon was untreated. Electrochemical impedance studies showed that the resistance due to the formation of surface film increased when the carbon was charged. However, the slight increase in resistance suggests that the products of the surface reduction are either soluble in the electrolyte or are loosely held to the surface. Charge-discharge studies with the porogen-treated carbon, pre-charged and discharged prior to use in coin cells, indicated that the first-cycle reversible capacity was the greatest when the charge-discharge rate was 0.4 C. At this rate, the carbon maintained capacities of about 325 mAh/g for 20 cycles, and then stabilized at around 380 mAh/g for over 70 cycles. Signature curves of the carbon showed that the deliverable capacities at charge-discharge rates of 0.2, 0.4, 0.8 C were 900, 700 and 500 mAh/g, respectively. Even at the 1.6 C rate, more than 300 mAh/g could be tapped from the carbon after 130 cycles.
(9100139), Xinwei Zhou. "IN SITU MORPHOLOGICAL AND STRUCTURAL STUDY OF HIGH CAPACITY ANODE MATERIALS FOR LITHIUM-ION BATTERIES". Thesis, 2020.
Buscar texto completoJhan, Yi-Ruei y 詹益瑞. "Synthesis and Characteristics of Sn-based and Lithium Titanate Anode Materials for High-capacity and High-power Li-ion Batteries". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/98117615856413419070.
Texto completoOu-Yang, Huei y 歐陽暉. "Characterization of nanostructured iron oxide composite electrode as an anode material for high-capacity Li-ion batteries". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/20292566236248703085.
Texto completo國立高雄應用科技大學
化學工程與材料工程系
97
In this study, the iron oxide (α-Fe2O3) active materials are synthesized by electrochemical deposition and chemical precipitation methods, respectively. In addition, the iron oxide was coated on the surface of carbon fiber (VGCF) to form α-Fe2O3/VGCF composite electrode as an anode material for high-capacity Li-ion batteries. In the first part, the iron oxide film and α-Fe2O3/VGCF composite electrodes are prepared by electrochemical deposition method. The effects of different deposition current densities (0.025 and 0.125 mA cm-2) on the material characteristics and electrochemical performances of iron oxide electrode are investigated. According to the SEM analysis, the iron oxide film deposited at low-current density (0.025 mA cm-2) is rod-like morphology and that deposited at high-current density (0.125 mA cm-2) is sheet-like morphology. During the first charge-discharge process, the reversible capacity of films deposited at 0.025 and 0.125 mA cm−2 are 1390 and 1275 mAh g-1, respectively; At 10 C rate, the reversible capacity are 803 and 797 mAh g-1, respectively. The synthesized anode materials have a higher capacity than the graphite material for lithium storage. The SEM and XRD results indicate that iron oxide films are uniformly coated on the surface of carbon fiber by means of electrochemical deposition process. Compared with iron oxide electrode (deposited at 0.125 mA cm-2), the reversible capacity of α-Fe2O3/VGCF composite electrodes are increased by 17.9 % in first charge-discharge process and 12 % at 10 C rate. The results show that carbon fiber can improve the electrochemical performance of the composite electrodes effectively. In the second part, the iron oxide powder is synthesized by chemical precipitation method and is deposited onto the stainless steel substrate by electrophoretic deposition to form iron oxide film and α-Fe2O3/VGCF composite electrodes. The effects of different precursors [Fe(NH4)2(SO4)2.6H2O and FeCl3.6H2O] on the material characteristics and electrochemical performances of the iron oxide electrode is investigated. According to the SEM analysis, when the precursors are Fe(NH4)2(SO4)2.6H2O and FeCl3.6H2O, the morphologies of resulting iron oxide powder are nanorod and nanoparticles, respectively. The TG-DTA and XRD results indicate that FeOOH is fully converted into α-Fe2O3 when the annealing temperature is elevated to 400℃. During the first charge-discharge process, the reversible capacity of films for Fe(NH4)2(SO4)2.6H2O and FeCl3.6H2O are 1390 and 1275 mAh g-1, respectively; At 10 C rate, the reversible capacity are 713 and 503 mAh g-1, respectively. Compared with iron oxide electrode [Fe(NH4)2(SO4)2.6H2O], the reversible capacity of α-Fe2O3/VGCF composite electrodes are increased by 16.2 % in first charge-discharge process and 11.8 % at 10 C rate.
Gonçalves, Tânia Isabel Moreira. "Development of ZnO anodes for high capacity batteries". Master's thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/90395.
Texto completoGonçalves, Tânia Isabel Moreira. "Development of ZnO anodes for high capacity batteries". Dissertação, 2015. https://repositorio-aberto.up.pt/handle/10216/90395.
Texto completoHsu, Kai-chieh y 許凱捷. "High Capacity Tin-Based Nanostructures as Anodes for Lithium-Ion Batteries". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/41265037590193339994.
Texto completo國立交通大學
應用化學系碩博士班
103
In this studies, we demonstrate the synthesis of tin-based nanostructures include SnO2 nanorods (NRs), hollow spheres (HSs), nanosheets (NSs) and Sn@C core-shell nanowires (NWs) without the usage of template and catalysts. Growth mechanism and electrochemical properties of tin-based samples were also investigated. First, phase-segregated SnO2 nanorods (NRs, length 1-2 m and diameter 10-20 nm) were developed in a matrix of CaCl2 salt by reacting CaO particles with a flowing mixture of SnCl4 and Ar gases at elevated temperatures via a vapor–solid reaction growth (VSRG) pathway. And developed a facile hydrothermal method to synthesize SnO2 hollow spheres (HSs) and nanosheets (NSs). The morphologies and structures of SnO2 could be controlled by Sn+4/+2 precursors. The shell thickness of the HSs was around 200 nm with diameter 1-3 μm, while thickness of the NSs was 40 nm. The correlation between the morphological characteristics and the electrochemical properties of SnO2 NRs, HSs and NSs were discussed. The SnO2 nanomaterials were investigated as a potential anode material for Li-ion batteries (LIBs). SnO2 NRs, HSs and NSs exhibit superior electrochemical performance and deliver 435, 522 and 490 mA h g−1 up to the one hundred cycles at a current density of 100 mA g-1 (0.13 C), which is ascribed to the unique structure of SnO2 which be surrounded in the inactive amorphous byproduct matrix. The matrix probably buffered and reduced the stress caused by the volume change of the electrode during the charge-discharge cyclings. Development tin-based nanocomposites containing suitably chosen matrix elements to achieve higher performance and reduce irreversibility processes. Designed strategy to fabricate a novel tin-carbon nanocomposites as electrodes of LIBs. Sn@C core-shell nanowires (NWs) were synthesized by reacting SnO2 particles with a flowing mixture of C2H2 and Ar gases at elevated temperatures. The overall diameter of the core–shell nanostructure was 100-350 nm. The C shell thickness was 30-70 nm. The NW length was several micrometers. Inside the shell, a void space was found. The reaction is proposed to be via a vapor–solid reaction growth (VSRG) pathway. The NWs were investigated as a potential anode material for Li-ion batteries (LIBs). The half-cell constructed from the as-fabricated electrode and a Li foil exhibited a reversible capacity of 525 mA h g-1 after one hundred cycles at a current density of 100 mA g-1. At a current density as high as 1000 mA g-1, the battery still maintained a capacity of 486 mA h g-1. The excellent performance is attributed to the unique 1D core-shell morphology. The core-shell structure and the void space inside the shell can accommodate large volume changes caused by the formation and decomposition of LixSn alloys in the charge-discharge steps.
Harris, Justin Thomas. "Nanostructuring silicon and germanium for high capacity anodes in lithium ion batteries". Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-12-6739.
Texto completotext
LI, JIN-CHENG y 李進成. "Electrochemical characteristic investigation of high purity aluminum foil used as anode foil in electrolytic capacitor". Thesis, 1986. http://ndltd.ncl.edu.tw/handle/13982933966499350617.
Texto completoLin, Ming-Syuan y 林明暄. "High Capacity of Earth-Abundant FeS2 Materials for Sodium-Ion Batteries Anodes Under Ultrahigh Charge Rate". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/91893446706898042317.
Texto completo國立臺灣師範大學
化學系
101
In recent years, FeS2 (natural pyrite) has been widely studied and considered to be potential electrode in the anode material for lithium-ion batteries, because some of the iron disulfide itself good properties and advantages, such as high theoretical capacity, no toxicity for low environmental impact and low cost. However, due to the lithium metal is very expensive material, secondary battery focuses on the development of low-cost battery. Sodium-ion battery is considered to be quite consistent with a choice, because of the low cost price of the sodium metal, high theoretical capacity, etc. It is possible to completely replace the similar properties of the lithium metal. But in fact, the low energy density, low output potential and capacity restriction are the problems encountered by the sodium-ion battery. In this thesis, we find a suitable electrode material to improve cycle stability and high capacity at high charge-discharge rate of the sodium-ion batteries. Therefore, this study focused on the natural iron disulfide material used in the sodium-ion battery anode. We found that iron disulfide as anodic materials of sodium-ion battery (FeS2-NIB) has demonstrated the first discharge and charge capacity of 730 mAh g-1 and 584 mAh g-1 at a current density of 50 mA g-1. The irreversible capacity of first cycle is approximately 20%. Especially, the irreversible capacity of charge-discharge process after second cycle is much less. The capacity of FeS2-NIB still remained 400 mAh g-1 after 50th cycles. During rapid charge-discharge test, FeS2-NIB have high capacity of 280 mAh g-1 at a current density of 8920 mA g-1. Overall results showed that the pure iron disulfide as anodic materials of sodium-ion battery demonstrated long cycle performance, high coulombic efficiency and good capacity retention at high charge-discharge rate. The results indicate that earth-abundant FeS2 is an extremely interesting candidate as anode materials of sodium-ion battery with a suitable electrolyte for fast intercalate/deintercalate Na ion reversibly.