File
Authors
Keywords
Si anode
Thick-film electrode
Gas-deposition method
Carrier gas
Li-ion battery
Abstract
Silicon thick-film electrodes for Li-ion battery anodes were prepared by a gas-deposition method using carrier gases of Ar and He. We investigated the effect of the carrier gases on film morphology and anode performance. The root mean square roughness of the films formed by He gas was twice larger than that formed by Ar gas. The Si electrode obtained by He gas exhibited a larger film thickness up to 4 mm, a higher initial capacity of 2280 mA h g-1, and larger capacities until 40th cycle compared with other electrodes. The better performance is probably attributed to a formation of many interspaces within the thick film. It is suggested that these interspaces enhanced contact area between active material and electrolyte, which enabled an efficient alloying/dealloying reaction of Li–Si.
Publisher
Elsevier
Content Type
Journal Article
Link
ISSN・ISBN
0040-6090
NCID
AA00863068
Journal Title
Thin solid films
Current Journal Title
Thin solid films
Volume
520
Issue
23
Start Page
7006
End Page
7010
Published Date
2012-09-30
Publisher-DOI
Text Version
Author
Rights
Copyright © 2012 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
Thin solid films. 2012, 520(23), 7006-7010
Department
Faculty of Engineering/Graduate School of Engineering
Language
English