期刊
CHEMELECTROCHEM
卷 8, 期 2, 页码 274-290出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.202001251
关键词
Fe-based anode materials; nanostructural design; componential regulation; interface engineering; elemental doping; aqueous secondary Ni− Fe batteries
资金
- Singapore Ministry of Education Academic Research Fund Tier 2 [MOE2019-T2-2-127, T2EP50120-0005]
- A*STAR under AME IRG [A2083c0062]
- Singapore Ministry of Education Academic Research Fund Tier 1 [RG90/19, RG73/19]
- Singapore National Research Foundation Competitive Research Program [NRF-CRP18-2017-02]
- Nanyang Technological University
Aqueous rechargeable nickel-iron batteries are promising for wearable and large-scale energy storage applications due to their flat discharge plateau, low cost, and safety. The challenge lies in the inferior electrochemical performance of Fe-based anode materials, but progress in nanostructural design and componential regulation has enhanced their capacity and energy density. Future development of Fe-based anode materials for next-generation aqueous Ni-Fe batteries requires addressing conductivity issues to improve overall performance.
Aqueous rechargeable nickel-iron (Ni-Fe) batteries characterized by their ultra-flat discharge plateau, low cost, and remarkable safety show attractive prospects for applications in wearable and large-scale energy storage. Electrode materials, as the key part of Ni-Fe batteries, determine their performance. Comparatively, Fe-based anode materials possess much lower capacity and energy density than available Ni-based cathode materials; thus, the overall electrochemical performance of Ni-Fe batteries is dominated by Fe-based anode materials. The key challenge of Fe-based anodes for Ni-Fe batteries is their inferior electrochemical performance originating from their poor electrical conductivity. Recently, significant progress has been achieved in the development of Fe-based anodes for Ni-Fe batteries through nanostructural design, componential regulation, interface engineering and elemental doping, whereby both intrinsic capacity and energy density have been enhanced. This Review presents an overview of the recent progress in Fe-based anode materials by categories of metal, oxide, sulfide, hydroxide, phosphide and selenide based on chemical composition. Finally, the challenges and possible solutions are briefly presented with some perspectives toward the future development of Fe-based anode materials for next-generation aqueous secondary Ni-Fe batteries.
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