阴极
材料科学
相间
电解质
电化学
高压
聚酰胺
聚合物
电压
锂(药物)
高能
光电子学
纳米技术
电极
化学工程
复合材料
电气工程
化学
工程物理
生物
工程类
内分泌学
物理化学
医学
遗传学
作者
Changchun Ye,Yongcai Qiu,Xuehuan Luo,Min Chen,Yisen Zhong,Binhong Wu,Lidan Xing,Youhao Liao,Weishan Li
标识
DOI:10.1016/j.cej.2020.126366
摘要
High voltage cathodes are necessary for improving energy density of electrochemical energy storage devices, but face issues originated from the instable interface between cathodes and electrolytes. In this work, we report a novel strategy to enforce the interface stability of high voltage cathodes by architecting an efficiently protective interphase via simply one-step treating the cathode materials with polymers. A representative high voltage cathode, lithium/manganese-rich oxide (LMR), is considered with a match of a polymer, aromatic polyamide (APA). Electrochemical measurements combining with physical characterizations and theoretical calculations demonstrate that a thin but robust interphase of 5 nm thick is successfully architected on LMR and consequently the cycling performances of LMR are significantly improved. This strategy is facile but efficient and therefore helpful for the application of high voltage cathodes in large scale.
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