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共混聚合物电解质 |
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侧链含一半硅氢键的羟基封端聚二硅氧烷(PSEMH) |
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离子电导率 |
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结晶度 |
| 本文作者相关文章 | |
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崔孟忠 |
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李竹云 |
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张洁 |
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冯圣玉 |
| PubMed | |
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Article by Cui, M. Z. |
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Article by Li, Z. Y. |
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Article by Zhang, J. |
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Article by Feng, K. Y. |
2. 烟台大学应用化学系
3. 山东大学化学化工学院
4. 山东大学高分子化学与物理研究所
通过Raman，DSC和XRD等方法对PEO-PSEMH-LiClO4全固态共混聚合物电解质进行了研究，结果表明PSEMH能够显著地降低PEO-LiClO4电解质体系的PEO的结晶性和玻璃化转变温度，同时PSEMH分子的二硅醚链节中氧原子与Li+间具有配位作用，从而大幅提高x%PEO-y%PSEMH-LiClO4电解质在低温区的离子电导率。而当PSEMH交联硫化之后，虽然降低了PEO的结晶度和Tg，但是由于PSEMH的交联网络限制了聚合物链段的运动性，使得电解质的离子电导率在低温区高于100%PEO-LiClO4(约为12倍)，而在高温区则低于100%PEO-LiClO4，充分证明了PSEMH对电解质的离子电导率的具有显著的贡献作用。
Interactions between polysilaether containing moiety Si—H bonds in the side chain (PSEMH)
chains and polyethylene oxide (PEO) in PEO-PSEMH-LiClO4 solid-state composite polymer electrolytes
were studied by Raman, DSC and XRD techniques. The experimental result shows that PSEMH can inhibit
the crystalline nature of PEO and reduce its glass transition point at the same time, then enhancing the ionic
conductivity of the composite polymer electrolytes largely at lower temperature. In addition, the oxygen
atoms of SiSiO chain in PSEMH have coordination with Li＋. After PSEMH was crosslinked, the crystalline
nature of PEO was inhibited and its glass transition point also reduced. The ionic conductivity of the
composite polymer electrolytes was higher than that of 100% PEO-LiClO4 (about 12 times) at lower
temperature, however, at high temperature the ionic conductivity of 100% PEO-LiClO4 was higher than that of
composite polymer electrolytes, proving that the polymer PSEMH has a significant contribution to the ionic
conductivity of composite polymer electrolyte.ity of composite polymer electrolyte.
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