ID 5275
File
Authors
Keywords
Mg2Ge/Si composite electrode
gas-deposition
lithium rechargeable battery
anode
Abstract
Mg2Ge/Si composite electrodes were prepared by a gas-deposition (GD) method and evaluated their electrochemical properties of anodes for Li rechargeable battery. The discharge capacity of the Mg2Ge/Si composite electrodes increased in comparison with that of Mg2Ge GD-film electrode. Among them, the Mg2Ge/Si composite electrode with 30 wt% Si content exhibited good cycle stability, which is 603 mAh g-1 after 200 cycles. At this composition of composite, each Si particle was surrounded with Mg2Ge layer, and the Mg2Ge layer appears to be easy to release the stress generated in the Si particle at Li insertion-extraction because Mg2Ge is more ductile than Si. Thus, we succeeded to develop the electrode which can take advantage of both high capacity of Si and good cyclability of Mg2Ge.
Publisher
電気化学会
Content Type
Journal Article
Link
ISSN
1344-3542
NCID
AN00151637
Journal Title
Electrochemistry
Current Journal Title
Electrochemistry
Volume
76
Issue
9
Start Page
644
End Page
648
Published Date
2008-07-01
Publisher-DOI
Text Version
Author
Rights
Copyright © 2008 The Electrochemical Society of Japan
Citation
Electrochemistry. 2008, 76(9), 644-648
Department
Faculty of Engineering/Graduate School of Engineering
Language
English