阳极
材料科学
电化学
电化学动力学
锂(药物)
离子
动力学
氧气
化学物理
化学工程
析氧
扩散
纳米技术
电极
热力学
化学
物理化学
医学
物理
有机化学
量子力学
工程类
内分泌学
作者
Xuefeng Liu,Yingying Xing,Ke Xu,Haijun Zhang,Mingxing Gong,Quanli Jia,Shaowei Zhang,Wen Lei
出处
期刊:Small
[Wiley]
日期:2022-03-31
卷期号:18 (18)
被引量:82
标识
DOI:10.1002/smll.202200524
摘要
High-entropy oxides (HEOs) are gradually becoming a new focus for lithium-ion battery (LIB) anodes due to their vast element space/adjustable electrochemical properties and unique single-phase retention ability. However, the sluggish kinetics upon long cycling limits their further generalization. Here, oxygen vacancies with targeted functionality are introduced into rock salt-type (MgCoNiCuZn)O through a wet-chemical molten salt strategy to accelerate the ion/electron transmission. Both experimental results and theoretical calculations reveal the potential improvement of lithium storage, charge transfer, and diffusion kinetics from HEO surface defects, which ultimately leads to enhanced electrochemical properties. The currently raised strategy offers a modular approach and enlightening insights for defect-induced HEO-based anodes.
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