Cathode materials modified by surface coating for lithium ion batteries

Li, C., Zhang, H. P., Fu, L. J., Liu, H., Wu, Y. P., Rahm, E., Holze, R. and Wu, H.Q. (2006) Cathode materials modified by surface coating for lithium ion batteries. Electrochimica Acta, 51 19: 3872-3883. doi:10.1016/j.electacta.2005.11.015


Author Li, C.
Zhang, H. P.
Fu, L. J.
Liu, H.
Wu, Y. P.
Rahm, E.
Holze, R.
Wu, H.Q.
Title Cathode materials modified by surface coating for lithium ion batteries
Journal name Electrochimica Acta   Check publisher's open access policy
ISSN 0013-4686
1873-3859
Publication date 2006-05-20
Year available 2005
Sub-type Article (original research)
DOI 10.1016/j.electacta.2005.11.015
Volume 51
Issue 19
Start page 3872
End page 3883
Total pages 12
Place of publication East Park, Kidlington, Oxford, U.K.
Publisher Pergamon
Language eng
Formatted abstract
Recent research results confirm the importance of structural surface features of cathode materials for their electrochemical performance. Modification by coating is an important method to achieve improved electrochemical performance, and the latest progress was reviewed here. When the surface of cathode materials including LiCoO2, LiNiO2, LiMn2O4 and LiMnO2 is coated with oxides such as MgO, Al2O3, SiO2, TiO2, ZnO, SnO2, ZrO2, Li2O·2B2O3-glass and other materials, the coatings prevent the direct contact with the electrolyte solution, suppress phase transition, improve the structural stability, and decrease the disorder of cations in crystal sites. As a result, side reactions and heat generation during cycling are decreased. Accompanying actions such as suppression of Mn2+ dissolution, increase in conductivity and removal of HF in electrolyte solutions have been observed. Consequently, marked improvement of electrochemical performance of electrode materials including reversible capacity, coulomb efficiency in the first cycle, cycling behavior, rate capability and overcharge tolerance has been achieved. In conclusion, further directions are suggested for the surface modification of electrode materials. With further understanding of the effects of the surface structure of cathode materials on lithium intercalation and de-intercalation, better and/or cheaper cathode materials from surface modification will come up in the near future.
© 2005 Elsevier Ltd. All rights reserved.
Keyword Lithium ion battery
Surface modification
Cathode materials
Coating
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Sat, 28 May 2011, 16:40:21 EST by Hao Liu on behalf of Aust Institute for Bioengineering & Nanotechnology