Influence of Mechanical Strain on the Electrochemical Lithiation of Aluminum-Based Electrode Materials

被引：29

作者：

Ichitsubo, Tetsu ^{[1
]}

Yagi, Shunsuke ^{[2
]}

Doi, Takayuki ^{[3
]}

Yukitani, Shunsuke ^{[1
]}

Hirai, Kosuke ^{[1
]}

Matsubara, Eiichiro ^{[1
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Kyoto 6068501, Japan

[2] Osaka Prefecture Univ, Nanosci & Nanotechnol Res Ctr, Osaka 5998570, Japan

[3] Kyoto Univ, Off Soc, Acad Collaborat Innovat, Kyoto 6158520, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2012年 / 159卷 / 01期

关键词：

LITHIUM-ION BATTERIES; NEGATIVE ELECTRODES; LI-BATTERIES; COMPOSITES; SYSTEM; ALLOY; TIN;

D O I：

10.1149/2.038201jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

While an Al-Li alloy is expected to be useful as an active material for a negative electrode in a Li battery, the electrochemical lithiation of pure Al metal is known to be quite difficult. In this work, we sought to clarify why an Al electrode hardly absorbs Li from a pure Al state, from the viewpoint of elasticity theory and thermodynamics. We consider two cases: (i) an AlLi compound with elastic strain due to volume expansion is formed in the Al matrix, and (ii) Li ions are absorbed into an Al electrode that has been pre-strained by rolling. These strain-energy effects are discussed with the aid of a chemical-potential diagram and the Gibbs-Duhem equation. (C) 2011 The Electrochemical Society. [DOI: 10.1149/2.038201jes]

引用

页码：A14 / A17

页数：4

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