Li(Al1-zZnz) alloys as anode materials for rechargeable Li-ion batteries

被引：21

作者：

Chumak, I. ^{[1
]}

Dmytriv, G. ^{[2
]}

Pavlyuk, V. ^{[2
]}

Oswald, S. ^{[1
]}

Eckert, J. ^{[1
]}

Trill, H. ^{[3
]}

Eckert, H. ^{[3
]}

Pauly, H. ^{[4
]}

Ehrenberg, H. ^{[1
]}

机构：

[1] IFW Dresden, Inst Complex Mat, D-01069 Dresden, Germany

[2] Ivan Franko Lviv Natl Univ, Dept Inorgan Chem, UA-79005 Lvov, Ukraine

[3] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany

[4] Tech Univ Darmstadt, D-64287 Darmstadt, Germany

来源：

JOURNAL OF MATERIALS RESEARCH | 2010年 / 25卷 / 08期

关键词：

TIN-BASED INTERMETALLICS; LITHIUM; ANNOUNCEMENT; ELECTRODE; METALS;

D O I：

10.1557/JMR.2010.0191

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cycling behavior of anode materials based on alloys from the Li(Al1-zZnz) continuous solid solution has been studied. The performance of the most promising composition Li(Al0.8Zn0.2) was tested in half-cells against metallic Li with three different electrolytes and in full Li-ion cells against a V2O5 cathode. The underlying structure evolution during cycling and the most relevant fatigue mechanisms are elucidated by x-ray diffraction, nuclear magnetic resonance, and x-ray photoelectron spectroscopy, and reveal a loss of mobile Li due to the ongoing formation of solid electrolyte interfaces. An enhanced stability for Li(Al1-zZnz) electrodes with z similar to 0.2 results from a peculiar microstructure due to the demixing of Al and Zn in the Li-poor state and their intermixing in the Li-rich state.

引用

页码：1492 / 1499

页数：8

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