Tesis sobre el tema "Proton batteries"
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Toorabally, Milad. "Development of negative TiO2-based electrodes by soft chemistry for aqueous proton ions batteries". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS496.
Texto completoGreen batteries that are safe, made of readily available and ethically sourced resources, cost-effective and easy to manufacture are needed. Lithium-ion technology, which uses Li-based materials and toxic flammable solvents, does not currently meet all of these criteria. With this in mind, we propose a complementary solution to Li-ion batteries in the form of an aqueous proton-ion battery. The primary challenges posed by aqueous batteries stem from their low energy density, which is the result of the restricted electrochemical stability window of water. This limitation narrows the field of candidates capable of intercalating protons without triggering parasitic reactions such as the hydrogen evolution reaction (HER). TiO2 materials present an intriguing option for use as a negative electrode for proton insertion. The chemical structure synthesized in solvothermal condition has been modified to achieve three distinct compounds: a layered, amorphous lepidocrocite type titanate sample further optimized with zinc ions chemically incorporated into its interlayer, a cationic defective anatase, and a stoichiometric anatase. The electrochemical analysis of the zinc-optimized layered titanate and defective anatase samples, and their integration as negative electrodes in full-cell conditions, demonstrates promising characteristics with notably, an extended potential window and heightened reversible proton capacity. These results were correlated to the materials characterization and the effect on proton transport
Xu, Zhi. "Investigations on Molecular Sieve Zeolite Membranes as Proton-Selective Ion Separators for Redox Flow Batteries". University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1428049733.
Texto completoLui, Wan-yin y 呂韻{21394e}. "A study on the performance of proton-exchange-membrane fuel cells and solar electrolysis for hydrogen production". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B26662425.
Texto completoVijayakumar, V. "Preparation, characterization and application of proton, lithium and zinc-ion conducting polymer electrolytes for supercapacitors, lithium- and zinc-metal batteries". Thesis(Ph.D.), CSIR-National Chemical Laboratory, 2021. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/5972.
Texto completoUniversity Grants Commissions (UGC), India CSIR, India
AcSIR
SENNA, ROQUE M. de. "Desenvolvimento e demonstração de funcionamento de um sistema híbrido de geração de energia elétrica, com tecnologia nacional, composto por módulo de células a combustível tipo PEMFC e acumulador chumbo ácido". reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10121.
Texto completoMade available in DSpace on 2014-10-09T13:59:32Z (GMT). No. of bitstreams: 0
Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
Karo, Jaanus. "The Rôle of Side-Chains in Polymer Electrolytes for Batteries and Fuel Cells". Doctoral thesis, Uppsala universitet, Strukturkemi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-100738.
Texto completoZhou, Daming. "Modeling and Multi-Dimensional Analysis of a Proton Exchange Membrane Fuel Cell". Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCA011/document.
Texto completoBefore mass commercialization of proton exchange membrane fuel cell, the research on the design of appropriate control strategies and auxiliaries need to be done for achieving proton exchange membrane fuel cell (PEMFC) optimal working modes. An accurate mathematical PEMFC model can be used to observe the internal variables and state of fuel cell during its operation, and could further greatly help the system control strategy development.A comprehensive multi-physical dynamic model for PEMFC is developed in chapter I. The proposed model covers multi-physical domains for electric, fluidic and thermal features. Particularly, the transient phenomena in both fluidic and thermal domain are simultaneously considered in the proposed model, such as the dynamic behaviors of fuel cell membrane water content and temperature. Therefore, this model can be used to analyze the coupling effects of dynamic variables among different physical domains.Based on the developed multi-physical PEMFC model, a full two-dimensional multi-physical model is further presented. The proposed model covers electrical and fluidic domains with an innovative 2-D modeling approach. In order to accurately describe the characteristics of reactant gas convection in the channels and diffusion through the gas diffusion layer, the gas pressure drop in the serpentine pipeline is comprehensively analyzed by fully taking the geometric form of flow field into consideration, such as the reactant gas pressure drop due to the pipeline sharp and U-bends. Based on the developed 2-D fluidic domain modeling results, spatial physical quantity distributions in electrical domain can be further obtained. Therefore, this 2-D PEMFC model can be use to study the influences of modeling parameters on the local multi-dimensional performance prediction. The simulation and experimental test are then performed to validate the proposed 2-D model with a commercial Ballard NEXA 1.2 kW PEMFC stack.In chapter II, analyses of dynamic phenomena step responses are conducted based on the developed multi-physical dynamic PEMFC model using the relative gain array (RGA) method for various control input variables, in order to quantitatively analyze the coupling effects in different physical domains, such as the interactions of membrane water content and temperature. Based on the calculated values of relative gain array, the proposed model can be considered as a fuel cell MIMO system, which could be divided into two independent control sub-systems by minimizing parameter coupling effects between each other. Due to the closely coupled parameters in the proposed first control sub-system, a decoupling control method is recommended to achieve optimized control results. The coupling analysis presented in this thesis can help engineers to design and optimize the fuel cell control strategies, especially for the water and thermal management in fuel cell systems
Jacques, Céline. "Méthodes d'apprentissage automatique pour la transcription automatique de la batterie". Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS150.
Texto completoThis thesis focuses on learning methods for automatic transcription of the battery. They are based on a transcription algorithm using a non-negative decomposition method, NMD. This thesis raises two main issues: the adaptation of methods to the analyzed signal and the use of deep learning. Taking into account the information of the signal analyzed in the model can be achieved by their introduction during the decomposition steps. A first approach is to reformulate the decomposition step in a probabilistic context to facilitate the introduction of a posteriori information with methods such as SI-PLCA and statistical NMD. A second approach is to implement an adaptation strategy directly in the NMD: the application of modelable filters to the patterns to model the recording conditions or the adaptation of the learned patterns directly to the signal by applying strong constraints to preserve their physical meaning. The second approach concerns the selection of the signal segments to be analyzed. It is best to analyze segments where at least one percussive event occurs. An onset detector based on a convolutional neural network (CNN) is adapted to detect only percussive onsets. The results obtained being very interesting, the detector is trained to detect only one instrument allowing the transcription of the three main drum instruments with three CNNs. Finally, the use of a CNN multi-output is studied to transcribe the part of battery with a single network
Ling, Min. "Development of Green Electrode Fabrication Technologies for Low Cost and High Performance Lithium Ion Batteries". Thesis, Griffith University, 2015. http://hdl.handle.net/10072/365824.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment.
Science, Environment, Engineering and Technology
Full Text
Plylahan, Nareerat. "Electrodeposition of Polymer Electrolytes into Titania Nanotubes as Negative Electrode for 3D Li-ion Microbatteries". Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4049.
Texto completoTitania nanotubes (TiO2nts) as potential negative electrode for 3D lithium-ion microbatteries have been reported. Smooth and highly-organized TiO2nts are fabricated by electrochemical anodization of Ti foil in glycerol or ethylene glycol electrolyte containing fluoride ions and small amount of water. As-formed TiO2nts shows the open tube diameter of 100 nm and the length from 1.5 to 14 µm which are suitable for the fabrication of the 3D microcbatteries. The deposition of PMA-PEG polymer electrolyte carrying LiTFSI salt into TiO2nts has been achieved by the electropolymerization reaction. The morphology studies by SEM and TEM reveal that the nanotubes are conformally coated with 10 nm of the polymer layer at the inner and outer walls from the bottom to the top without closing the tube opening. 1H NMR and SEC show that the electropolymerization leads to PMA-PEG that mainly consists of trimers. XPS confirms the presence of LiTFSI salt in the oligomers.The electrochemical studies of the as-formed TiO2nts and polymer-coated TiO2nts have been performed in the half-cells and full cells using MA-PEG gel electrolyte containing LiTFSI in Whatman paper as separator. The half-cell of TiO2nts (1.5 µm long) delivers a stable capacity of 22 µAh cm-2 over 100 cycles. The performance of the half-cell is improved by 45% at 1C when TiO2nts are conformally coated with the polymer electrolyte. The better performance results from the increased contact area between electrode and electrolyte, thereby improving the charge transport
SUN, C. "Electrical energy storage by electrochemical vanadium redox flow battery methods". Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3424975.
Texto completoLe batterie Redox a Flusso (RFB) sono celle elettrochimiche capaci di convertire reversibilmente l'energia chimica immagazzinata in coppie redox in energia elettrica. Le batterie a flusso al vanadio (VRFB) sfruttano coppie redox entrambe basate su specie di vanadio. Per far sì che la tecnologia VRFB sia commercialmente valida, occorre superare barriere tecniche ed economiche che includono elevati costi di capitale ed un rapido decadimento della capacità. L'obiettivo principale di questa tesi è di ottenere VRFB ad alte prestazioni e di lunga durata, principalmente riducendo la permeabilità del vanadio attraverso la membrana. Al giorno d'oggi nelle VRFB vengono utilizzate membrane a base di acido perfluorosolfonico, come il Nafion. Il Nafion ha un'elevata stabilità chimica e meccanica, e presenta una buona conducibilità protonica. La VRFB con membrana al Nafion hanno un rapido decadimento della capacità a causa dell'alto crossover del vanadio. Per superare i limiti del Nafion, questa tesi riporta la sintesi e la caratterizzazione di membrane ibride inorganico-organiche conduttrici di protoni alternative agli ionomeri perfluorurati. Due famiglie di membrane ibride sono state ottenute: 1) membrana di Nafion drogata con nanofiller WO3, per ridurre il crossover del vanadio mantenendo un’elevata conducibilità protonica; 2) sintesi di una membrana a base di poli(etere-etere-chetone) solfonato (SPEEK), con grado di solfonazione ottimizzato. Anche la membrana a base di SPEEK viene poi drogata con WO3 per ridurre il crossover del vanadio. Nelle membrane ibride preparate mediante una procedura di solvent-casting, l'introduzione di nanoparticelle di WO3 non altera in modo significativo gli eventi di degradazione termica della matrice polimerica, mantenendo così una buona stabilità termica. Misure MDSC rivelano che nelle membrane ibride gli eventi termici sono leggermente spostati a causa della formazione di "crosslink dinamici" tra le nanoparticelle di WO3 e la matrice polimerica, che stabilizzano la membrana. La dimensione dei domini idrofili e l’assorbimento d’acqua della mambrana si riducono all’aumentare del contenuto di WO3. Di conseguenza, i percorsi di migrazione di carica diventano più tortuosi. Questa maggiore tortuosità alla migrazione di carica corrisponde ad una permeabilità inferiore delle specie vanadio. Al contrario del vanadio, la tortuosità ha probabilmente un effetto inferiore per i protoni, poiché gli ioni di vanadio attraversano solo i domini massivi di acqua, mentre i protoni vengono scambiati anche alle interfacce polimero-nanofiller. Così, la permeabilità al vanadio delle membrane ibride diminuisce significativamente e la selettività degli ioni è molto migliorata rispetto al Nafion. Le migliori membrane ibride sono scelte per il test in cella VRFB. Esse esibiscono una maggiore efficienza coulombica rispetto al riferimento Nafion 212. La ridotta permeazione delle specie di vanadio è rivelata anche dal minore decadimento della capacità di scarica e dai tempi di autoscarica più lunghi per le membrane ibride. Pertanto, la nuova famiglia di membrane ibride è un promettente candidato per l'applicazione in VRFB. Il capitolo finale descrive lo studio, attraverso la spettroscopia Raman, delle specie presenti nella soluzione positiva (catolita) di una VRFB in funzione dello stato di carica (SOC). Gli equilibri dovuti alla presenza di complessi di coordinazione del vanadio, che interagiscono fortemente con i leganti HSO4- e SO42-, vengono evidenziati. In particolare, viene dimostrato come il catolita includa specie addizionali oltre a VO2+ e VO2+, quali HV2O5- e H3V2O7-. La presenza di tali specie deve essere considerata per comprendere in dettaglio i processi di scarica e carica che avvengono agli elettrodi di una VRFB. Infatti, su queste basi, ci si aspetta il coinvolgimento di un'ampia distribuzione di specie V(IV) e V(V), che potrebbero influenzare le caratteristiche macroscopiche significativamente cruciali di una VRFB.
Nguyen, Thi Minh Phuong. "ETUDE DU COMPORTEMENT DE BATTERIES AU PLOMB EN CONDITIONS EXTREMES : CHARGE RAPIDE, MAINTIEN EN CHARGE PAR FAIBLE COURANT IMPOSE, INVERSIONS DE POLARITE INTRODUCTION DE PROCEDES DE CHARGE ATYPIQUES". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2009. http://tel.archives-ouvertes.fr/tel-00443615.
Texto completoGuerenne, Laura. "Validation de modèles précliniques de transformation de Syndrome Myélodysplasique en Leucémie Aiguë Myéloide et application à l'étude de nouvelles thérapies". Paris 7, 2014. http://www.theses.fr/2014PA077116.
Texto completoMyelodysplastic syndromes (MDS) are a heterogeneous group of clonai hematopoietic stem tell diseases characterized by dysplasia in the myeloid lineage. 40% of MDS patients evolve to an acute myeloid leukemia (AML). The study of animal models provides an opportunity to better understand the myeloid leukemogenesis. It is also the starting point for the development of nevi therapies to better treat patients with MDS and AML post a SMD. We conducted a large-scale genomic screening by DNA chip to obtain the gene expression profile of two transgenic mouse models of MDS and AML post MDS. These profiles were compared with the gene expression profile of patients in order to highlight their relevance to the study of MDS and AML post SMD. These analyses showed similarities between expression profiles of patient and mouse models and have shown alterations in expression of genes involved in cellular functions described as yet little involved in the development of the disease. We also assessed the efficacy of a DNA nonspecific vaccine, the pVAX14, and a molecule which inhibite proteins BH3 domain. ABT-737 has an effect on anti-apoptotic BCL-2 proteins family. In a mouse model of transplantable LAP and transgenic mouse model of high-risk MDS, vaccinatior with pVAX14 increase mice survival and activate the immune response as it was already shown in the LAP mouse model with a specific vaccine expressing PML-RAR alpha antigen. These results suggest a use "generic" pVAX14 to treat other types of cancer or haematological malignancies. ABT-737 improves the survival in the transgenic mouse model of high-risk MDS and target leukemia initiating cells and primitive progenitor cells, by regulating the tell cycle, differentiation, and apoptosis
Kim, Yee Seul. "Investigation of charge transport/transfer and charge storage at mesoporous TiO2 electrodes in aqueous electrolytes". Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC161/document.
Texto completoBetter understanding of the mechanisms of charge transport/transfer and charge storage in transparent mesoporous semiconductive metal oxide films (either functionalized or not by redox-active chromophores) in aqueous electrolytes is of fundamental importance for the development and optimization of a wide range of safe, eco-compatible and sustainable energy producing or energy storage devices (e.g., dye-sensitized solar cells, batteries, photoelectrocatalytic cells, …). To address this question, mesoporous semiconductive TiO2 films prepared by glancing angle deposition (GLAD-TiO2) were selected for their unique high surface area, well-controlled morphology, high transparency in the visible, and well-defined semiconductivity that can be easily adjusted through an external bias, allowing thus their characterization by real-time spectroelectrochemistry. We first investigated charge transfer/transport at GLAD-ITO and GLAD-TiO2 electrodes functionalized by a redox-active manganese porphyrin that can play both the role of chromophore and catalyst. We demonstrate that the electrochemical response of the modified electrodes, recorded either in the absence or presence of O2 as substrate, is strongly dependent on the mesoporous film conductivity. By using cyclic voltammetry coupled to UV-visible absorption spectroscopy, we were able to recover some key information such as the heterogeneous electron transfer rate between the immobilized redox-active dye and the semiconductive material, and also to rationalize the specific electrochemical behavior obtained at a porphyrin-modified GLAD TiO2 film under catalytic turnover. In parallel, we developed a new functionalization procedure of mesoporous metal oxide films (GLAD-ITO in the present case) by electrografting of in-situ generated aryldiazonium salts, allowing for modified electrodes characterized by both a high surface coverage and a particularly good stability over time under hydrolytic conditions. Also, we investigated charge storage at GLAD-TiO2 electrodes under various aqueous electrolytic conditions. We notably evidenced for the first time that fast, massive, and reversible insertion of protons can occur in amorphous nanostructured TiO2 films immersed in near neutral aqueous buffer, with the proton donor being the weak acid form of the buffer but not water. We also demonstrated that this proton-coupled electron charge storage process can occur over the entire range of pH and for a wide range of organic or inorganic weak acids, but also of multivalent metal ion aquo complexes, as long as the applied potential and pKa of weak acid are properly adjusted
Javid, Gelareh. "Contribution à l’estimation de charge et à la gestion optimisée d’une batterie Lithium-ion : application au véhicule électrique". Thesis, Mulhouse, 2021. https://www.learning-center.uha.fr/.
Texto completoThe State Of Charge (SOC) estimation is a significant issue for safe performance and the lifespan of Lithium-ion (Li-ion) batteries, which is used to power the Electric Vehicles (EVs). In this thesis, the accuracy of SOC estimation is investigated using Deep Recurrent Neural Network (DRNN) algorithms. To do this, for a one cell Li-ion battery, three new SOC estimator based on different DRNN algorithms are proposed: a Bidirectional LSTM (BiLSTM) method, Robust Long-Short Term Memory (RoLSTM) algorithm, and a Gated Recurrent Units (GRUs) technique. Using these, one is not dependent on precise battery models and can avoid complicated mathematical methods especially in a battery pack. In addition, these models are able to precisely estimate the SOC at varying temperature. Also, unlike the traditional recursive neural network where content is re-written at each time, these networks can decide on preserving the current memory through the proposed gateways. In such case, it can easily transfer the information over long paths to receive and maintain long-term dependencies. Comparing the results indicates the BiLSTM network has a better performance than the other two. Moreover, the BiLSTM model can work with longer sequences from two direction, the past and the future, without gradient vanishing problem. This feature helps to select a sequence length as much as a discharge period in one drive cycle, and to have more accuracy in the estimation. Also, this model well behaved against the incorrect initial value of SOC. Finally, a new BiLSTM method introduced to estimate the SOC of a pack of batteries in an Ev. IPG Carmaker software was used to collect data and test the model in the simulation. The results showed that the suggested algorithm can provide a good SOC estimation without using any filter in the Battery Management System (BMS)
Clappier, Emmanuelle. "Génétique somatique et oncogenèse des leucémies aiguës lymphoblastiques T". Paris 7, 2008. http://www.theses.fr/2008PA077087.
Texto completoT-cell acute lymphoblastic leukemia are malignancies derived from lymphoid thymic precursors arrested in their differentiation. Identification and characterization of somatic rearrangements/mutations of the genome is a major step for leukemogenesïs mechanisms understanding and identification of the critical biological pathways of tumoral cells. We performed a screen for genomic rearrangements in a series of adult and pediatric T-ALL cases annotated for immunophenotypic data and expression of known oncogenes (TAL1, TLX1, TLX3, LMO2. . . ). Two genome-wide approaches were used: i) FISH screening for TCR-mediated translocations and breakpoint doning using cirded-PCR to identify partner sequences, ii) genomic profiling using array-CGH in a search for cryptic deletions or duplications. We thus identified several new recurrent rearrangements of T-ALL and showed that they lead to dysregulated expression of genes critical for thymic differentation: HOXA, Cylin D2 and C-MYB gènes. These abnormalities were included in a general molecular portrait of T-ALL performed by lange-scale gene expression analysis. Importantly, new oncogenic subtypes were defined, including a HOXA-group including cases with TCRB-HOXA translocation and SET-NUP214 microdeletion, and a homogeneous subtype of T-cell leukemias in very young children with TCRB-MYB translocation
"Hybrid Microgrid Model based on Solar Photovoltaics with Batteries and Fuel Cells system for intermittent applications". Master's thesis, 2013. http://hdl.handle.net/2286/R.I.16469.
Texto completoDissertation/Thesis
M.S.Tech Engineering 2013
Sanghi, Shilpi. "Ion mobility studies of functional polymeric materials for fuel cells and lithium ion batteries". 2011. https://scholarworks.umass.edu/dissertations/AAI3482662.
Texto completoPinheiro, Daniela Ribeiro. "Synthesis, photophysical and electrochemical studies on tryptanthrin and indigo derivatives. Historic molecules with modern applications". Doctoral thesis, 2021. http://hdl.handle.net/10316/95405.
Texto completoIndigo, an iconic molecule of colour, is included in the most ancient and important natural dyes used by mankind. The longevity as a colourant and unique properties of this compound are related with its high (photo)stability which is linked to a rapid proton transfer in the excited state (ESPT). In the past few years, indigo and its derivatives have gained renewed interest due to applications in several fields such as photoswitches, electronic devices and sensors. The study and development of an improved and fast approach for the synthesis of mono- and di-substituted indigo derivatives combined with a comprehensive characterization of their electronic spectral and photophysical properties in different solvents and temperatures was undertaken and constitutes the first part of this thesis. The study was further rationalized with density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations. The second part of this thesis reports the synthesis of tryptanthrin and tryptanthrin derivatives, important compounds with a variety of biological and pharmacological applications as well as redox properties. Tryptanthrin was synthesized from indigo under mild conditions using microwave irradiation. A comprehensive study of the excited state of these compounds was also undertaken. In contrast with indigo, emission of the triplet state of tryptanthrin and its derivatives, with the exception of 2-aminotryptanthrin, where fluorescence dominates, was observed with a very efficient singlet oxygen sensitization quantum yield. These results indicate intersystem crossing (ISC) to be the dominant deactivation channel in tryptanthrin and its derivatives, with high quantum yields. Time-resolved fluorescence and femtosecond transient absorption (fs-TA) data, further supported with TDDFT calculations, show for tryptanthrin, two species, a locally excited (LE) and a charge transfer (CT) with a highly reversible inter-conversion rate constant (LE to CT state). A pratical and modern application of storage of chemical energy with, an aqueous organometallic and an all-organic redox flow battery (RFB) with sulfonated tryptanthrin, working at neutral pH and with long-term stability, was further developed. The single cell tests showed reproducible charge-discharge cycles with significant improvement results for the aqueous all-organic RFB, with higth coulombic, voltaic and energetic efficiencies stabilized over several working cycles. The work paves the way to the promising development of new tryptanthrin based structures for environmentally friendly aqueous all-organic RFBs working at neutral pH values.
O índigo, uma icónica molécula da cor, é um dos corantes mais antigos e importantes usados pela humanidade. A longevidade deste corante assim como as suas propriedades únicas estão relacionadas com a sua elevada (foto)estabilidade que esta ligada a uma rápida transferência de protão no estado excitado. Nos últimos anos, o índigo e os seus derivados ganharam um interesse renovado devido a aplicações em diversos campos, tais como, interruptores fotónicos, dispositivos elétricos e sensores. O estudo e desenvolvimento de uma abordagem mais rápida e aprimorada da síntese de derivados mono- e di-substituídos do índigo combinados com uma caracterização abrangente das suas propriedades eletrónicas, espectrais e fotofísicas, em diferentes solventes e temperaturas foi realizada e constitui a primeira parte desta tese. O estudo foi racionalizado com cálculos teóricos através da teoria do funcional da densidade (DFT) e da teoria do funcional da densidade dependente do tempo (TDDFT). A segunda parte desta tese relata a síntese da triptantrina e seus derivados. Estes compostos são importantes pois para além de apresentarem uma vasta aplicação biológica e farmacológica possuem também propriedades de oxidação-redução. A triptantrina foi sintetizada a partir do índigo sob condições suaves utilizando radiação de micro-ondas como fonte de energia. Um estudo abrangente do estado excitado destes compostos foi também realizado. Em contraste com o índigo, na triptantrina e seus derivados, com exceção da 2-aminotriptantrina, onde a fluorescência domina, foi observada emissão do estado tripleto com rendimentos quânticos de formação de oxigénio singleto muito eficientes. Estes resultados indicam que a conversão intersistemas (ISC) é a principal via de desativação na triptantrina e seus derivados, com elevados rendimentos quântico. Os dados de fluorescência resolvida no tempo e absorção transiente de femtosegundos (fs-TA), complementados com cálculos TDDFT, mostram que no caso da triptantrina, existem duas espécies, uma excitada localmente (LE) e uma com transferência de carga (CT), com uma constante de interconversão altamente reversível (LE para o estado CT). Uma aplicação prática e moderna de armazenamento de energia química com, uma bateria redox de fluxo aquoso organometálico e exclusivamente orgânico com triptantrina sulfonada, trabalhando em pH neutro com estabilidade a longo prazo foi desenvolvida. Os testes de célula única demostraram ciclos de carga-descarga reprodutíveis, com melhores resultados no sistema exclusivamente orgânico, com eficiências coulômbica, voltaica e enérgicas estáveis e elevadas ao longo de vários ciclos. Este trabalho fornece uma nova perspetiva sobre o desenvolvimento de derivados da triptantrina solúveis em água com potencial aplicação em baterias de fluxo aquoso de sistemas exclusivamente orgânico que trabalham em pH neutro e são mais sustentáveis em termos ambientais.