Survey of Gas Expansion in Li-Ion NMC Pouch Cells

被引：140

作者：

Self, Julian ^{[1
]}

Aiken, C. P. ^{[1
]}

Petibon, Remi ^{[2
]}

Dahn, J. R. ^{[1
,2
]}

机构：

[1] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada

[2] Dalhousie Univ, Dept Chem, Halifax, NS B3H 3J5, Canada

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

UNDERSTAND SURFACE-CHEMISTRY; CARBON ANODES; PERFORMANCE; MECHANISMS; BATTERIES; SEI;

D O I：

10.1149/2.0081506jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This preliminary study investigates initial gas formation in Li[Ni0.4Mn0.4Co0.2]O-2 (NMC442) pouch cells with three different electrolytes: 3:7 ethylene carbonate : ethyl methyl carbonate (EC:EMC) w/ 1 M LiPF6 as the control, control + 2% prop-1-ene-1,3-sultone (PES) and control + 2% vinylene carbonate (VC). In situ volume measurements reveal three main features of gas evolution, an initial gas step, gas absorption, and a second gas step at higher voltage. Gas chromatography-mass spectrometry is employed to identify the gaseous compounds. This work illustrates the strong dependence of volume change due to gas evolution on additives, charging rate and temperature. (C) The Author(s) 2015. Published by ECS.

引用

页码：A796 / A802

页数：7

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