期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 44, 页码 41356-41362出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b14149
关键词
Water-in-Salt; aqueous electrolyte; concentrated electrolyte; Al-ion battery; aqueous battery; Prussian blue analogues; Al-ion cathode
资金
- National Key Technologies R&D Program, China [2018YFB0104400]
- National Natural Science Foundation of China [51872322]
- Shell Global Solutions International B.V. [PT76419]
Prussian blue analogues (PBAs) are considered to be ideal multivalent cation host materials due to their unique open-framework structure. In aqueous solution, however, the PBAs' cathodes have a low reversible capacity limited by the single electrochemical group Fe(CN)(6)(3-) and high crystal water content. They also suffer from fast cycle fading, resulting from significant oxygen/hydrogen evolution and cathode dissolution. In this work, a high-capacity PBA-type FeFe(CN)(6) cathode with double transition metal redox sites is successfully demonstrated in 5 m Al(CF3SO3)(3) Water in-Salt electrolyte (Al-WISE). Due to Al-WISE having a wide electrochemical window (2.65 V) and low dissolution of the cathode, our PBA cathode exhibits a high discharge capacity of 116 mAh/g and the superior cycle stability >100 cycles with capacity fading of 0.39% per cycle.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据