Simulation and analysis of stress in a Li-ion battery with a blended LiMn2O4 and LiNi0.8Co0.15Al0.05O2 cathode

被引：84

作者：

Dai, Yiling ^{[1
]}

Cai, Long ^{[1
]}

White, Ralph E. ^{[1
]}

机构：

[1] Univ S Carolina, Dept Chem Engn, Columbia, SC 29208 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 247卷

关键词：

Lithium ion battery; Stress; Model; Multiple active materials; LMO; NCA; ELEVATED-TEMPERATURE PERFORMANCE; RECHARGEABLE LITHIUM BATTERIES; CAPACITY FADE; POSITIVE ELECTRODES; SPINEL ELECTRODES; MANGANESE OXIDE; MN DISSOLUTION; INSERTION CELL; DOPED LIMN2O4; INTERCALATION;

D O I：

10.1016/j.jpowsour.2013.08.113

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Stress generation due to Li ion insertion into/extraction from LiMn2O4 particles is studied with a mathematical model for a lithium ion battery with pure LiMn2O4 or mixed LiMn2O4 and LiNi0.8Co0.15Al0.05O2 cathode. The simulated stress profile in a pure LiMn2O4 electrode shows nonuniformity across the positive electrode. The cathode blended model predicts that the stress generated in the LiMn2O4 particles is reduced at the end of discharge due to adding LiNi0.8Co0.15Al0.05O2 to the cathode. The effect of the variation in the blend ratio on the stress generation is also investigated. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：365 / 376

页数：12

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