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A Hydrogen–Bromate Flow Battery for Air-Deficient Environmentsстатья
- Авторы: Modestov Dr Alexander D, Konev Dr Dmitry V, Tripachev Oleg V., Antipov Dr Anatoly E, Tolmachev Dr Yury V, Vorotyntsev Prof Mikhail A
- Журнал: ENERGY TECHNOLOGY
- Год издания: 2017
- Номер статьи: 201700447
- DOI: 10.1002/ente.201700447
- Аннотация: A concept of high energy density (ED) hydrogen–bromate flow battery was supported by experiments with flow cells with 0.1 to 50 cm2 apparent areas. H2/NaBrO3 flow cells with H2 gas diffusion anode, proton exchange membrane (PEM), and carbonaceous flow-by or flow-through cathodes were employed. Estimates show that the theoretical ED of the H2/bromate flow battery (HBFB) exceeds the ED of H2/O2 fuel cells (FC) in air-deficient environments. At the cathode of the HBFB, aqueous, concentrated bromate (non-toxic, and stable) is reduced to bromide by a six-electron process. 100 % conversion of BrO3− to Br− can be achieved. Although acidification of the BrO3− electrolyte is a prerequisite, the acid concentration in the electrolyte feed can be optimized as a trade-off between area specific power (P) of the HBFB and its complexity.
- Добавил в систему: Толмачёв Юрий Вячеславович