DocumentCode
2428247
Title
Structural and electrochemical characteristics of Li1+xMn2+xO4 and LiMn2O4-δ for secondary lithium batteries
Author
Wang, G.X. ; Bradhurst, D.H. ; Dou, S.X. ; Liu, H.K.
Author_Institution
Inst. for Mater. Technol. & Manauf., Wollongong Univ., NSW, Australia
fYear
1998
fDate
13-16 Jan 1998
Firstpage
375
Lastpage
380
Abstract
A series of excess lithium doped and oxygen deficient lithium manganese oxide spinels were prepared in order to investigate the dependence of electrochemical performance on the sample structure and chemical composition. Test cells were constructed containing cathodes of synthesised compounds. Li/Li1+xMn2+xO4 cells demonstrated improved capacity retention on cycling. However, the rechargeability of Li/LiMn2O4-δ cell was degraded. Structural damage of the spinel LiMn2O4 electrode probably is the main reason responsible for capacity fade. The relation between the capacity retention and the Jahn-Teller effect is discussed in detail
Keywords
Jahn-Teller effect; cathodes; electrochemistry; lithium; lithium compounds; manganese compounds; secondary cells; Jahn-Teller effect; Li-LiMn2O4; Li/Li1+xMn2+xO4 cells; Li/LiMn2O4-δ cell rechargeability; Li1+xMn2+xO4; LiMn2O4-δ; capacity fade; capacity retention; cathodes; chemical composition; cycling; electrochemical characteristics; electrochemical performance; excess lithium doped LiMn2O4 spinels; improved capacity retention; oxygen deficient Li-Mn2O4 spinels; secondary lithium batteries; spinel LiMn2O4 electrode; structural characteristics; structural damage; synthesised compounds; Anodes; Batteries; Cathodes; Ethanol; Lithium; Manganese; Powders; Temperature; Testing; X-ray diffraction;
fLanguage
English
Publisher
ieee
Conference_Titel
Battery Conference on Applications and Advances, 1998., The Thirteenth Annual
Conference_Location
Long Beach, CA
ISSN
1089-8182
Print_ISBN
0-7803-4098-1
Type
conf
DOI
10.1109/BCAA.1998.653898
Filename
653898
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