Generation of cathode passivation films via oxidation of lithium bis(oxalato) borate on high voltage spinel (LiNi0.5Mn 1.5O4)

Mengqing Xu; Nikolaos Tsiouvaras; Arnd Garsuch; Hubert A. Gasteiger; Brett L. Lucht

doi:10.1021/jp501970j

Generation of cathode passivation films via oxidation of lithium bis(oxalato) borate on high voltage spinel (LiNi_0.5Mn _1.5O₄)

Mengqing Xu
, Nikolaos Tsiouvaras
, Arnd Garsuch
, Hubert A. Gasteiger
, Brett L. Lucht

Chair of Technical Electrochemistry

Department of Chemistry, University of Rhode Island
Technical University of Munich
BMW AG
BASF SE

Research output: Contribution to journal › Article › peer-review

135 Scopus citations

Abstract

The reactions of lithium ion battery electrolyte (LiPF₆ in ethylene carbonate/ethyl methyl, EC/EMC, 3:7 v/v) with and without added lithium bis(oxalato) borate (LiBOB) on the surface of high voltage LiNi _0.5Mn_1.5O₄ cathodes has been investigated via a combination of electrochemical measurements, in situ gas analysis, and ex situ surface analysis. The oxidation of LiBOB on the cathode results in the generation of CO₂ and a cathode passivation film containing borate oxalates. The cathode passivation film inhibits oxidation of the bulk electrolyte at high potential (>4.8 V vs Li/Li⁺).

Original language	English
Pages (from-to)	7363-7368
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	14
DOIs	https://doi.org/10.1021/jp501970j
State	Published - 10 Apr 2014

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title = "Generation of cathode passivation films via oxidation of lithium bis(oxalato) borate on high voltage spinel (LiNi0.5Mn 1.5O4)",

abstract = "The reactions of lithium ion battery electrolyte (LiPF6 in ethylene carbonate/ethyl methyl, EC/EMC, 3:7 v/v) with and without added lithium bis(oxalato) borate (LiBOB) on the surface of high voltage LiNi 0.5Mn1.5O4 cathodes has been investigated via a combination of electrochemical measurements, in situ gas analysis, and ex situ surface analysis. The oxidation of LiBOB on the cathode results in the generation of CO2 and a cathode passivation film containing borate oxalates. The cathode passivation film inhibits oxidation of the bulk electrolyte at high potential (>4.8 V vs Li/Li+).",

author = "Mengqing Xu and Nikolaos Tsiouvaras and Arnd Garsuch and Gasteiger, \{Hubert A.\} and Lucht, \{Brett L.\}",

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T1 - Generation of cathode passivation films via oxidation of lithium bis(oxalato) borate on high voltage spinel (LiNi0.5Mn 1.5O4)

AU - Xu, Mengqing

AU - Tsiouvaras, Nikolaos

AU - Garsuch, Arnd

AU - Gasteiger, Hubert A.

AU - Lucht, Brett L.

PY - 2014/4/10

Y1 - 2014/4/10

N2 - The reactions of lithium ion battery electrolyte (LiPF6 in ethylene carbonate/ethyl methyl, EC/EMC, 3:7 v/v) with and without added lithium bis(oxalato) borate (LiBOB) on the surface of high voltage LiNi 0.5Mn1.5O4 cathodes has been investigated via a combination of electrochemical measurements, in situ gas analysis, and ex situ surface analysis. The oxidation of LiBOB on the cathode results in the generation of CO2 and a cathode passivation film containing borate oxalates. The cathode passivation film inhibits oxidation of the bulk electrolyte at high potential (>4.8 V vs Li/Li+).

AB - The reactions of lithium ion battery electrolyte (LiPF6 in ethylene carbonate/ethyl methyl, EC/EMC, 3:7 v/v) with and without added lithium bis(oxalato) borate (LiBOB) on the surface of high voltage LiNi 0.5Mn1.5O4 cathodes has been investigated via a combination of electrochemical measurements, in situ gas analysis, and ex situ surface analysis. The oxidation of LiBOB on the cathode results in the generation of CO2 and a cathode passivation film containing borate oxalates. The cathode passivation film inhibits oxidation of the bulk electrolyte at high potential (>4.8 V vs Li/Li+).

UR - https://www.scopus.com/pages/publications/84898434290

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DO - 10.1021/jp501970j

M3 - Article

AN - SCOPUS:84898434290

SN - 1932-7447

VL - 118

SP - 7363

EP - 7368

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 14

ER -

Generation of cathode passivation films via oxidation of lithium bis(oxalato) borate on high voltage spinel (LiNi_0.5Mn _1.5O₄)

Abstract

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