Lithium-Ion Batteries Working at 85°C: Aging Phenomena and Electrode/Electrolyte Interfaces Studied by XPS

被引：64

作者：

Bodenes, Lucille ^{[1
]}

Dedryvere, Remi ^{[1
]}

Martinez, Herve ^{[1
]}

Fischer, Florent ^{[2
]}

Tessier, Ceccile ^{[2
]}

Peres, Jean-Paul ^{[3
]}

机构：

[1] Univ Pau & Pays Adour, IPREM ECP UMR CNRS 5254, F-64053 Pau 9, France

[2] SAFT, F-33074 Bordeaux, France

[3] SAFT, F-86000 Poitiers 9, France

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2012年 / 159卷 / 10期

关键词：

SURFACE-FILM FORMATION; ELEVATED-TEMPERATURE PERFORMANCE; ENHANCED THERMAL-STABILITY; GRAPHITE ANODE INTERFACE; CATHODE MATERIALS; ELECTROLYTE; CELLS; IDENTIFICATION; INTERCALATION; SPECTROSCOPY;

D O I：

10.1149/2.061210jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li(Ni,Mn,Co)O-2/graphite lithium-ion batteries designed to work at high temperature were tested upon cycling at 85 degrees C in various voltage ranges. Aging processes in relation with changes in the electrode/electrolyte interfaces at both electrodes were investigated by X-ray Photoelectron Spectroscopy (XPS). Changes were observed in the composition of the solid electrolyte interphase (SEI) at the surface of graphite electrode due to the high cycling temperature: disappearance of carbonates and increase of inorganic compounds coming from degradation of the salt. A slight dissolution process of the PVdF positive electrode binder was evidenced. It was also observed that the formation and thickness of the passivation layer at the positive electrode surface at 85 degrees C depends on the cycling voltage range. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.061210jes] All rights reserved.

引用

页码：A1739 / A1746

页数：8

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