Identifying battery aging mechanisms in large format Li ion cells

被引：317

作者：

Dubarry, Matthieu ^{[1
]}

Liaw, Bor Yann ^{[1
]}

Chen, Mao-Sung ^{[2
]}

Chyan, Sain-Syan ^{[3
]}

Han, Kuo-Chang ^{[3
]}

Sie, Wun-Tong ^{[3
]}

Wu, She-Huang ^{[2
]}

机构：

[1] Univ Hawaii Manoa, Hawaii Nat Energy Inst, SOEST, Honolulu, HI 96822 USA

[2] Tatung Univ, Dept Mat Engn, Taipei 104, Taiwan

[3] Chung Shan Inst Sci & Technol, Tao Yuan 325, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 07期

关键词：

Large format; LiFePO4; batteries; Incremental capacity analysis; Thermal degradation; High temperature effect; Loss of lithium inventory; HIGH-TEMPERATURE; ELECTROCHEMICAL PERFORMANCE; LIFEPO4; GRAPHITE; ELECTRODE; INTERCALATION; CARBONATE; CATHODES;

D O I：

10.1016/j.jpowsour.2010.07.029

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：

Large format LiFePO4-based Li-ion batteries are rapidly becoming available from commercial cell manufacturers. In this paper two types of 10Ah single cells (one prismatic and another cylindrical) from two manufacturers were tested at room temperature and 60 C. Both cells suffered severe degradation at 60 degrees C. The results were analyzed using incremental capacity analysis (ICA) along with other electrochemical techniques. Overall the two types of cells were similar in behavior, despite subtle differences in performance. This study shed some light on the degradation process associated with these two large format LiFePO4 cell designs with regard to thermal degradation at elevated temperatures. The analysis illustrates a unique capability of using ICA to differentiate cell performance and material utilization in different cell designs. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3420 / 3425

页数：6

共 25 条

[11] On the stability of LiFePO4 olivine cathodes under various conditions (electrolyte solutions, temperatures) [J].