Electrochemical and thermal properties of graphite electrodes with imidazolium- and piperidinium-based ionic liquids

被引：57

作者：

Profatilova, Irina A. ^{[1
]}

Choi, Nam-Soon ^{[1
]}

Roh, Sae Weon ^{[1
]}

Kim, Sung Soo ^{[1
]}

机构：

[1] Samsung SDI Co Ltd, Corp R&D Ctr, Energy Lab, Suwon 443731, Gyeonggi Do, South Korea

来源：

JOURNAL OF POWER SOURCES | 2009年 / 192卷 / 02期

关键词：

Graphite electrode; Solid electrolyte interphase layer; Ionic liquid; Differential scanning calorimetry; Thermal stability; Lithium-ion battery; ACCELERATING RATE CALORIMETRY; LITHIATED GRAPHITE; EXOTHERMIC REACTIONS; STABILITY; ANODE; CARBONATE; SOLVENTS; SAFETY; SALT;

D O I：

10.1016/j.jpowsour.2009.03.041

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：

The electrochemical and thermal properties of graphite electrodes with electrolytes containing 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMITFSI) and N-methyl,N-propylpiperidinium bis(trifluoromethanesulfonyl)imide (MPPPTFSI) ionic liquids are investigated. The ionic liquids undergo extensive reductive decomposition on a graphite electrode during the first charge. The effect of a fluoroethylene carbonate (FEC) additive on the reductive decomposition of the ionic liquids is examined by electrochemical, scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis. Thermal reactions between a lithiated graphite electrode and an ionic liquid-containing electrolyte are investigated with differential scanning calorimetry (DSC). The introduction of an ionic liquid can effectively reduce the exothermic heat evolution from the thermal reactions between a lithiated graphite electrode and an electrolyte. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：636 / 643

页数：8

共 25 条

[1] The influence of lithium salt on the interfacial reactions controlling the thermal stability of graphite anodes [J].

Andersson, AM ;

Herstedt, M ;

Bishop, AG ;

Edström, K .

ELECTROCHIMICA ACTA, 2002, 47 (12) :1885-1898

[2] Safety mechanisms in lithium-ion batteries [J].

Balakrishnan, PG ;

Ramesh, R ;

Kumar, TP .

JOURNAL OF POWER SOURCES, 2006, 155 (02) :401-414

[3] On safety of lithium-ion cells [J].

Biensan, P ;

Simon, B ;

Pérès, JP ;

de Guibert, A ;

Broussely, M ;

Bodet, JM ;

Perton, F .

JOURNAL OF POWER SOURCES, 1999, 81 :906-912

[4] Thermal reactions of lithiated graphite anode in LiPF6-based electrolyte [J].

Choi, Nam-Soon ;

Profatilova, Irina A. ;

Kim, Sung-Soo ;

Song, Eui-Hwan .

THERMOCHIMICA ACTA, 2008, 480 (1-2) :10-14

[5]

Du Pasquier A, 1998, J ELECTROCHEM SOC, V145, P472

[6] Carbon electrode morphology and thermal stability of the passivation layer [J].

Edström, K ;

Andersson, AM ;

Bishop, A ;

Fransson, L ;

Lindgren, J ;

Hussénius, A .

JOURNAL OF POWER SOURCES, 2001, 97-8 :87-91

[7] Ionic liquids as electrolytes [J].

Galinski, Maciej ;

Lewandowski, Andrzej ;

Stepniak, Izabela .

ELECTROCHIMICA ACTA, 2006, 51 (26) :5567-5580

[8] Electrolyte additives for enhanced thermal stability of the graphite anode interface in a Li-ion battery [J].

Herstedt, M ;

Rensmo, H ;

Siegbahn, H ;

Edström, K .

ELECTROCHIMICA ACTA, 2004, 49 (14) :2351-2359

[9] Stabilisation of lithiated graphite in an electrolyte based on ionic liquids:: an electrochemical and scanning electron microscopy study [J].

Holzapfel, M ;

Jost, C ;

Prodi-Schwab, A ;

Krumeich, F ;

Würsig, A ;

Buqa, H ;

Novák, P .

CARBON, 2005, 43 (07) :1488-1498

[10] Calorimetric investigation of the reactivity of the passivation film on lithiated graphite at elevated temperatures [J].

Holzapfel, M ;

Alloin, F ;

Yazami, R .

ELECTROCHIMICA ACTA, 2004, 49 (04) :581-589

← 1 2 3 →