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Investigation on the Determining Factor in the Performance of in Situ Fabricated Lithium Polymer Secondary Battery by Lingbo Kong; Hui Zhan; Yajuan Li; Yunhong Zhou is a Engineering article available to read on EtoBox.

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In our preliminary research, an in situ fabrication of the lithium polymer cell starting from Li/1 M LiTFSI in DOL + DME (2:1 by weight)/LiCoO 2 cell is successfully achieved owing to the electro-polymerization of DOL solvent. Basing on previous work, a comprehensive investigation on the new technology is conducted and some significant result is presented in this paper. The influence of three leading factors such as: current rate, upper limit voltage and temperature are laid a heavy emphasis. It is found that upper limit voltage is a prerequisite to the initiation of DOL polymerization as long as the operating temperature is kept far below the temperature limit for the occurrence of thermal-initiated polymerization. Once this requirement is satisfied, the current rate exerts a positive influence on DOL's electro-polymerization and helps to the formation of a conductive polymer electrolyte, but as another two factors are concerned, the case is just the reverse. And besides, benefiting from the "regulation" effect of current rate, the lack of capacity retentivity that is encountered during the high-temperature or high-voltage cycling can be compensated by an electrochemical pretreatm

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Author

Lingbo Kong; Hui Zhan; Yajuan Li; Yunhong Zhou

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0013-4686)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)