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NOVEL(1,3,2-dioxathiolane, 2-oxide)–based ELECTROLYTE ADDITIVES FOR LITHIUM ION BATTERY
 
zoomin      
 
技術名稱
Technology
NOVEL(1,3,2-dioxathiolane, 2-oxide)–based ELECTROLYTE ADDITIVES FOR LITHIUM ION BATTERY
發明人
Inventor
Haregewoin, Atetegeb, Meazah, 林昇佃, Leggesse, Ermias, Girma, 江志強, 黃炳照, 王成祐,
所有權人
Asignee
國立臺灣科技大學

專利國家
Country
申請號
Application No.
專利號
Patent No.
中心案號
Serial No.
中華民國 102146897 I 532232 1020096TW0
 
點閱數:669
技術摘要:
The aim of the invention is to provide novel electrolyte additives to enhance the performance of Li ion batteries. Using 4-chloromethyl-1,3,2-dioxathiolane,2-oxide as an additive, the co-intercalation of PC and the subsequent exfoliation of graphite anode can be suppressed and this provides a safer cell for low temperature application of lithium ion battery. In addition, 1,3,2-dioxathiolane,2-oxide with different halo and/or haloalkyl substituent groups can have high reduction potential resulting in the formation of protecting layer on electrode. Such novel electrolyte additives can minimize the capacity loss and improve the poor cycle ability of lithium ion battery for different electrolyte compositions. Another aim of the invention is to provide novel electrolyte additives to improve the performance of anode materials such as graphite and Si-based anode materials in lithium ion battery. A further aim of the invention is to improve the performance of cathode materials such as LiCoO2 and Li-excess layered oxide cathode materials in lithium ion battery. The inventors have found that based on experimental and quantum chemical calculations, a serious of additives containing sulfur and halogen functional groups that are effective to improve the performance of lithium ion battery.


 
   




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