File
Authors
Keywords
Lithium-Ion Battery
Silicon Negative-Electrode
Film-Forming Additive
Vinylene Carbonate
Fluoroethylene Carbonate
Abstract
Effect of film-forming additives, such as vinylene carbonate (VC) and fluoroethylene carbonate (FEC), on electrochemical performance of Si negative-electrode in lithium-ion batteries was investigated using a thick-film prepared by gas-deposition without any binder and conductive additive. In VC-containing electrolyte, Si electrode exhibited better cycle performance with a discharge capacity of 1000 mA h g-1 beyond 750th cycles at a constant charge capacity of 1000 mA h g-1. In FEC-containing electrolyte, in addition, Si electrode showed good rate performance with a discharge capacity of 2000 mA h g-1 even at a high current rate of 10 C. When the current rate was returned to an initial low current rate of 0.4 C, more than 90% of initial discharge capacity was maintained. Film-forming additives relatively suppressed change in the surface morphology of Si thick-film electrode after charge-discharge cycling; disintegration of Si electrode was prevented by the additives.
Publisher
ESG
Content Type
Journal Article
Link
ISSN・ISBN
1452-3981
Journal Title
International Journal of Electrochemical Science
Current Journal Title
International Journal of Electrochemical Science
Volume
10
Issue
11
Start Page
9678
End Page
9686
Published Date
2015-09-30
Text Version
Publisher
Rights
© 2015 The Authors. Published by ESG (www.electrochemsci.org). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
Citation
International Journal of Electrochemical Science. 2015, 10(11), 9678-9686
Department
Faculty of Engineering/Graduate School of Engineering
Language
English