容量损失
材料科学
锂(药物)
扩散
插层(化学)
阴极
热扩散率
电极
薄膜
空位缺陷
脉冲激光沉积
化学工程
平面的
动力学
纳米技术
电化学
无机化学
化学
物理化学
结晶学
热力学
计算机科学
内分泌学
工程类
计算机图形学(图像)
物理
医学
量子力学
作者
Ruijun Pan,Dominik Rau,Yannik Moryson,Joachim Sann,Jürgen Janek
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2020-06-05
卷期号:3 (7): 6065-6071
被引量:7
标识
DOI:10.1021/acsaem.0c00819
摘要
Capacity loss mechanisms of lithium-ion batteries (LIBs) are intensively studied. In this study, planar LiCoO2 (LCO) thin film electrodes are successfully prepared by pulsed laser deposition and used to explore a diffusion-controlled reversible capacity loss mechanism of layered oxide cathodes. It is found that the reversible capacity loss of LCO originates from asymmetric lithium chemical diffusion kinetics during (de)lithiation, which is eventually rooted in the intrinsic lithium vacancy dependent diffusivity in the layered structure of LCO. The understanding of the reversible capacity loss may be highly beneficial for the development of LIBs and other systems based on intercalation compounds.
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