Study on the Cycling Performances of Lithium-Ion Polymer Cells Containing Polymerizable Additives

Bulletin of the Korean chemical society

Dong Won Kim¹ 

关键词: Cycling performance;    Electrochemical oxidation;    Gel polymer electrolyte;    Lithium-ion polymer cell;    Polymerizable additive;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Gel polymer electrolytes were prepared by immersing a porous poly(vinylidene fluoride-co-hexafluoropropylene) membrane in an electrolyte solution containing small amounts of polymerizable additive (3,4-ethylenedioxythiophene, thiophene, biphenyl). The organic additives were electrochemically oxidized to form conductive polymer films on the electrode at high potential. With the gel polymer electrolytes containing different organic additive, lithium-ion polymer cells composed of carbon anode and LiCoO2 cathode were assembled and their cycling performances were evaluated. Adding small amounts of thiophene or 3,4-ethylenedioxythiophene to the gel polymer electrolyte was found to reduce the charge transfer resistance in the cell and it thus exhibited less capacity fading and better high rate performance.

【 授权许可】

Unknown