Evaluation of Effects of Additives in Wound Li-Ion Cells Through High Precision Coulometry

被引：110

作者：

Burns, J. C. ^{[1
]}

Jain, Gaurav ^{[2
]}

Smith, A. J. ^{[1
]}

Eberman, K. W. ^{[3
]}

Scott, Erik ^{[2
]}

Gardner, J. P. ^{[3
]}

Dahn, J. R. ^{[1
]}

机构：

[1] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada

[2] Medtron Energy & Component Ctr, Brooklyn Ctr, MN 55430 USA

[3] 3M Corp Headquarters, 3M Ctr, St Paul, MN 55144 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2011年 / 158卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

VINYLENE CARBONATE; COULOMBIC EFFICIENCY; BATTERIES; ELECTROLYTE;

D O I：

10.1149/1.3531997

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiCoO(2)/graphite and LiCoO(2)/Li(4)Ti(5)O(12) wound prismatic cells were examined with and without electrolyte additives using the high precision charger at Dalhousie University. The additives tested were vinylene carbonate, trimethoxyboroxine, and lithium (bis) trifluoromethanesulfonimide. The voltage curves, charge and discharge end point positions, fade, and coulombic efficiency were compared to gain an understanding of the effects of the electrolyte additives on the cells. Long term cycling data (capacity loss over 750 cycles) was compared with predicted lifetime measurements based on high precision coulometry. Design of experiments was used in order to help interpret the results from the 20 groups of cells tested. (C) 2011 The Electrochemical Society. [DOI:10.1149/1.3531997] All rights reserved.

引用

页码：A255 / A261

页数：7

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