On the electrochemical and thermal behavior of lithium bis(oxalato)borate (LiBOB) solutions

被引：72

作者：

Larush-Asraf, L. ^{[1
]}

Biton, A. ^{[1
]}

Teller, H. ^{[1
]}

Zinigrad, E. ^{[1
]}

Aurbach, D. ^{[1
]}

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

来源：

JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 02期

关键词：

LiBOB; graphite; EQCM; AFM; thermal analysis;

D O I：

10.1016/j.jpowsour.2007.06.171

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In recent years, lithium bis(oxalato)borate, LiB(C2O4)(2) (LiBOB) has been proposed as an alternative salt to the commonly used electrolyte, LiPF6. There is evidence of the enhanced stability of Li-ion battery electrodes in solutions of this salt, due to a unique surface chemistry developed in LiBOB solutions. The present study is aimed at further exploring the electrochemical and thermal properties of LiBOB solutions in mixtures of alkyl carbonates with non-active metal, graphite and lithium electrodes. FTIR spectroscopy, XPS, EQCM, in situ AFM imaging, and DSC were used in conjunction with standard electrochemical techniques. The study also included a comparison between LiBOB and LiPF6 solutions. The development of a favorable surface chemistry in LiBOB solutions that provides better passivation to Li and Li-graphite electrodes was clearly evident. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：400 / 407

页数：8

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