图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Guorong Chen, Pengfei Shi, Yongping Bai, and Taibing FanDepartment of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China
摘 要:<正> A novel composite polymer electrolyte was prepared by blending an appropriate amount of LiClO4 and 10% (mass fraction) fumed SiO2 with the block copolymer of poly (ethylene oxide) (PEO) synthesized by poly (ethylene glycol) (PEG) 400 and CH2C12. The ionic conductivity, electrochemical stability, interfacial characteristic and thermal behavior of the composite polymer electrolyte were studied by the measurements of AC impedance spectroscopy, linear sweep voltammetry and differential scanning calorimetry (DSC), respectively. The glass transition temperature acts as a function of salt concentration, which increases with the LiClO4 content. Lewis acid-base model interaction mechanism was introduced to interpret the interactive relation between the filled fumed SiO2 and the lithium salt in the composite polymer electrolyte. Over the salt concentration range and the measured temperature, the maximum ionic conductivity of the composite polymer electrolyte (10-4.41 S/cm) appeared at EO/Li=25 (mole ratio) and 30
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