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Author Fey, G. T. ♦ Wang, Z. F. ♦ Lu, C. Z. ♦ Premkumar, T.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Elsevier
File Format PDF
Copyright Year ©2005
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Lithium batteries ♦ Electrochemical Power Sources
Abstract The enhanced cyclability of LiCoO2 coated with MgAl2O4 is described. A TEM examination of the microstructure of the coated particles revealed that the spinel formed a rather uniform coating over the cathode material. XRD data suggested the presence of substitutional oxides on the surface of the cathode particles. R-factor values from XRD studies and galvanostatic cycling studies suggested that a coating level of 1.0 wt.% gave an optimal performance in capacity and cyclability. A commercial sample of LiCoO2 coated with 1.0 wt.% of spinel registered a five-fold improvement in cyclability. The improved cyclability is attributed to a suppression of the cycle-limiting phase transitions that accompany the charge–discharge processes.
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-01-01
Journal PeerReviewed