Evaluation of Commercial Lithium-Ion Cells Based on Composite Positive Electrode for Plug-In Hybrid Electric Vehicle (PHEV) Applications IV. Over-Discharge Phenomena

被引：26

作者：

Dubarry, Matthieu ^{[1
]}

Truchot, Cyril ^{[1
]}

Devie, Arnaud ^{[1
]}

Liaw, Bor Yann ^{[1
]}

Gering, Kevin ^{[2
]}

Sazhin, Sergiy ^{[2
]}

Jamison, David ^{[2
]}

Michelbacher, Christopher ^{[2
]}

机构：

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

[2] Idaho Natl Lab, Idaho Falls, ID 83415 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 09期

关键词：

BATTERIES;

D O I：

10.1149/2.0481509jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Lithium-ion cells with composite positive electrodes are attractive and promising for EV and PHEV applications. For powertrain applications, the battery packs are required to have multiple-cell configurations, where some battery management is needed to protect cells from experiencing overcharging and overdischarging. Here, we show how to analyze the effect of slight overdischarge in a graphite parallel to {LixMn1/3Ni1/3Co1/3O2 + Li5Mn2O4} cell, when it was overdischarged to 2.0 V. We found a peculiar behavior at low voltages that is imputable to the composite nature of the positive electrode. Under certain circumstances, due to differences in kinetic limitations in each of the constituents in the composite electrode, although Li5Mn1/3Ni1/3Co1/3O2 were discharged normally, LixMn2O4 could be overdischarged to Li2Mn2O4 and cause capacity fade. (C) The Author(s) 2015. Published by ECS. All rights reserved.

引用

收藏

页码：A1787 / A1792

页数：6

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