Temperature dependent ionic transport properties in composite solid polymer electrolytes
(0) In the present work, temperature dependent lithium transference number T+Li of poly (ethylene oxide)/LiClO4 composite solid polymer electrolytes containing mesoporous silica SBA-15 was studied. T+Li reaches a low value around the melting point (Tm) of the polymer electrolyte and increases as temperature deviates from Tm, which is due to the different mechanisms of lithium conduction and anion conduction. While the anion transport mainly involves hopping between free volumes large enough to accommodate the ions, lithium ions are transferred by making and breaking of bonds with motion between coordinating sites. In comparison with the polymer electrolyte without SBA-15, the composite polymer electrolytes containing SBA-15 exhibit higher values of T+Li and lithium conductivity.
Lithium transference number Lithium conduction Composite solid polymer electrolyte Mesoporous silica Poly (ethylene ozide)
Xiao-Liang Wang Li-Zhen Fan Zhi-Han Xu Yuan-Hua Lin Ce-Wen Nan
Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processi School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 1
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1310-1313
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）