Communication-Why High-Precision Coulometry and Lithium Plating Studies on Commercial Lithium-Ion Cells Require Thermal Baths

被引：6

作者：

Zulke, Alana ^{[1
,2
]}

Li, Yi ^{[1
]}

Keil, Peter ^{[3
]}

Hoster, Harry ^{[1
,2
]}

机构：

[1] Univ Lancaster, Dept Chem, Lancaster LA1 4YB, England

[2] CNRS, ALISTORE European Res Inst, Hub Energie, FR 3104, Rue Baudelocque, F-80039 Amiens, France

[3] Battery Dynam GmbH, Lichtenberg Str, D-85748 Munich, Germany

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2019年 / 166卷 / 13期

基金：

“创新英国”项目;

关键词：

IN-SITU DETECTION; IMPEDANCE SPECTROSCOPY; DIFFERENTIAL VOLTAGE; DEGRADATION; VOLTAMMETRY; RELAXATION; BATTERIES; IDENTIFY; QUANTIFY; DEFECTS;

D O I：

10.1149/2.0841913jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We demonstrate how insufficient heat transport in environmental chambers compromises the meaningfulness of high-precision charge counting and leads to an underestimation of lithium plating in fast-charged lithium-ion batteries. Direct-contact liquid cooling of cylindrical cells excludes temperature fluctuations observed in thermal chambers and restricts self-heating to 2 K in comparison to the 14 K in thermal chambers, under 1.5 C-rate cycling. Our thermal-electrochemical model replicated well the experimental results. For high-precision coulometric studies to be meaningful and more comparable across different laboratories, especially for large-format and high-power cells, direct-contact cooling in thermal baths must become the new standard. (C) 2019 The Electrochemical Society.

引用

页码：A2921 / A2923

页数：3

共 18 条

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