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A Rechargeable Battery with an Iron Metal Anode
Author(s) -
Wu Xianyong,
Markir Aaron,
Xu Yunkai,
Zhang Chong,
Leonard Daniel P.,
Shin Woochul,
Ji Xiulei
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201900911
Subject(s) - anode , materials science , prussian blue , battery (electricity) , cathode , electrolyte , galvanic anode , metal , aqueous solution , plating (geology) , energy storage , stripping (fiber) , inorganic chemistry , electrochemistry , chemical engineering , electrode , cathodic protection , metallurgy , chemistry , composite material , organic chemistry , power (physics) , physics , quantum mechanics , engineering , geophysics , geology
To date, tremendous efforts of the battery community are devoted to batteries that employ Li + , Na + , and K + as charge carriers and nonaqueous electrolytes. However, aqueous batteries hold great promise for stationary energy storage due to their inherent low cost and high safety. Among metal batteries that use aqueous electrolytes, zinc metal batteries are the focus of attention. In this study, iron as an anode candidate in aqueous batteries is investigated because iron is undoubtedly the most earth‐abundant and cost‐effective metal anode. Reversible iron plating/stripping in a FeSO 4 electrolyte is demonstrated on the anode side and reversible topotactic (de)insertion of Fe 2+ in a Prussian blue analogue cathode is showcased. Furthermore, it is revealed that LiFePO 4 can pair up with the iron metal anode in a hybrid cell, delivering stable performance as well.