环氧乙烷
三氟甲磺酸
差示扫描量热法
电解质
环氧丙烷
共聚物
高分子化学
离子电导率
材料科学
聚合物
氧化物
电导率
相(物质)
化学
有机化学
物理化学
复合材料
冶金
催化作用
物理
热力学
电极
作者
Albert Bakker,Jan Lindgren,Kersti Hermansson
出处
期刊:Polymer
[Elsevier]
日期:1996-05-01
卷期号:37 (10): 1871-1878
被引量:50
标识
DOI:10.1016/0032-3861(96)87303-4
摘要
Polymer electrolytes based on triblock copolymers of ethylene oxide (EO)/propylene oxide (PO)/ethylene oxide of moderate molecular weight and narrow block-length distributions, doped with M(CF3SO3)2 and M[N(CF3SO2)2]2 (M = Mg, Ca, Sr and Ba), LiCF3SO3 and LiN(CF3SO2)2 have been investigated using infrared spectroscopy, differential scanning calorimetry and conductivity measurements. The effects of varying the EO/PO block length, composition and temperature on the phase behaviour, ion-pair formation and conductivity of the polymer electrolytes have been studied. A two-phase microstructure has been observed. Ion pairing occurs for the triflate salts and the amount was found to be sensitive to the relative block sizes rather than the molecular weight of the copolymer.
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