Direct borohydride fuel cells: A selected review of their reaction mechanisms, electrocatalysts, and influence of operating parameters on their performance
| Autor: | Antoine Bonnefont, Elena R. Savinova, Marian Chatenet, Alexandr G. Oshchepkov, Gaël Maranzana |
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| Přispěvatelé: | Electrochimie Interfaciale et Procédés (EIP), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI), Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Reaction mechanism
Materials science 02 engineering and technology 010402 general chemistry Borohydride Electrocatalyst 01 natural sciences 7. Clean energy Redox Analytical Chemistry Catalysis Sodium borohydride chemistry.chemical_compound Nickel Electrochemistry Direct Borohydride Fuel Cells Platinum Hydrogen escape [CHIM.CATA]Chemical Sciences/Catalysis [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Anode Membrane Chemical engineering chemistry Borohydride Oxidation Reaction 0210 nano-technology Palladium |
| Zdroj: | Current Opinion in Electrochemistry Current Opinion in Electrochemistry, Elsevier, 2022, 32, pp.100883. ⟨10.1016/j.coelec.2021.100883⟩ |
| ISSN: | 2451-9103 |
| DOI: | 10.1016/j.coelec.2021.100883⟩ |
| Popis: | International audience; Direct borohydride fuel cells (DBFC) oxidize an easily-stored energy-dense borohydride fuel (sodium borohydride: NaBH4), that in theory reacts ca. 400 mV below H2 and produce 8 electrons per BH4anion. However, the borohydride oxidation reaction (BOR) does not fully meet these promises in practice: the electrocatalyst nature, structure and state-of-surface, and the operating conditions (pH, BH4concentration, temperature, fluxes) noticeably influence the BOR kinetics and mechanism. Nickel and platinum-based catalysts both have assets for the BOR. DBFCs can only yield decent performance if their separator combines high ionconductivity and efficient separation of the reactants; cation-exchange membranes, anionexchange membranes, bipolar membranes and porous separators all have their own advantages and drawbacks. Besides the anode, the choice of separator must consider the DBFC cathode reaction, where oxygen (air) or hydrogen peroxide are reduced, provided adapted catalysts are used. All these aspects drive the DBFC performance and stability/durability. |
| Databáze: | OpenAIRE |
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