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为了获得电导率高的快离子导体,人们主要从晶格结构考虑,这在寻找银和铜的快离子导体工作中取得很大成功。然而在探索实用价值更大的碱金属离子导体时,却遇到了困难。此后,人们又把注意力转向聚合物。Fenton等人首先报导了由碱金属盐和聚环氧乙烷(简称PEO)组成的络合物,其后Armard等人研究了PEO-NaSCN的电学性能.Liang首先把γ-Al_2O_3微粒分散在离子导体LiI中,所得的固态混合物比纯LiI高约两个数量级。Weston等人在研究α-Al_2O_3对PEO-LiClO_4影响时,认为α-Al_2O_3的加入虽然增加了该离子导体的机械稳定性,但离子电导率却降低了。本文在研究PEO-NaSCN离子导体电学性能的基础上,进一步探讨了不同含量的第二相γAl_2O_3对PEO-NaSCN电导率的影响。
In order to obtain a fast ionic conductor with high conductivity, one mainly considers the lattice structure, which has been very successful in finding a fast ionic conductor of silver and copper. However, it has encountered difficulties in exploring practical alkali metal ion conductors with greater practical value. Since then, people have turned their attention to the polymer. Fenton et al. First reported the complex consisting of an alkali metal salt and polyethylene oxide (PEO), after which Armard et al. Studied the electrical properties of PEO-NaSCN. First, the γ-Al 2 O 3 particles were dispersed in ions In the LiI conductor, the resulting solid mixture is about two orders of magnitude higher than pure LiI. When studying the effect of α-Al 2 O 3 on PEO-LiClO 4, Weston et al. Showed that although the addition of α-Al 2 O 3 increased the mechanical stability of the ionic conductor, the ionic conductivity decreased. Based on the investigation of the electrical properties of PEO-NaSCN ionic conductor, the influence of different content of second phase γAl_2O_3 on the conductivity of PEO-NaSCN was further studied.