材料科学
阴极
储能
氧化还原
锂(药物)
钠
电压
电池(电)
能量密度
纳米技术
电化学
工程物理
电极
化学
冶金
电气工程
工程类
物理
内分泌学
物理化学
功率(物理)
医学
量子力学
作者
Xu Gao,Huanqing Liu,Wentao Deng,Ye Tian,Guoqiang Zou,Hongshuai Hou,Xiaobo Ji
标识
DOI:10.1002/batt.202100108
摘要
Abstract Sodium‐ion batteries (SIBs) have grasped renewed attentions in recent years owing to the blooming growth of clean energy and corresponding demands of grid‐scale energy storage. Note that, the properties of cathode materials are quite important to the development of SIBs as they largely determine the energy density, cycle life, and cost of a battery. Direct inheriting those Co/Ni based layered cathodes that are successfully utilized in lithium‐ion batteries seems to be impracticable for SIBs in view of the high materials costs. Fortunately, the discovery of the electrochemical activity of Fe 3+ /Fe 4+ redox couple in sodium layered materials has opened a new way to design high capacity/voltage and low‐cost cathodes for SIBs. To date, various Fe‐based layered oxides have been explored, showing encouraging electrochemical performances in SIBs. However, issues and challenges still remain upon the practical utilization of Fe‐based layered cathodes, calling for further targeted and in‐depth investigations. In this review, the developing history, key problems, and current progress of Fe‐based layered cathodes on electrochemical performances and working mechanism are summarized and discussed. In addition, possible research trends and perspectives are proposed. It is believed that Fe‐based layered oxides will be one of the most attractive cathodes for SIBs.
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