Science. 1993 Nov 5;262(5135):883-5. doi: 10.1126/science.262.5135.883.
Ionically conducting polymers (polymer electrolytes) are under intensive investigation because they form the basis of all solid-state lithium batteries, fuel cells, and electrochromic display devices, as well as being highly novel electrolytes. Little is known about the structures of the many crystalline complexes that form between poly(ethylene oxide) and a wide range of salts. The crystal structure is reported of the archetypal polymer electrolyte poly(ethylene oxide)(3):LiCF(3)SO(3), which has been determined from powder x-ray diffraction data. The poly(ethylene oxide) (PEO) chain adopts a helical conformation parallel to the crystallographic b axis. The Li(+) cation is coordinated by five oxygen atoms-three ether oxygens and one from each of two adjacent CF(3)SO(3)(-) groups. Each CF(3)SO(3)(-) in turn bridges two Li(+) ions to form chains running parallel to and intertwined with the PEO chain. There are no interchain links between PEO chains, and the electrolyte can be regarded as an infinite columnar coordination complex.
离子导电聚合物（聚合物电解质）正在受到广泛关注，因为它们是全固态锂电池、燃料电池和电致变色显示器件的基础，同时也是高度新颖的电解质。对于聚（氧化乙烯）和各种盐之间形成的许多结晶复合物的结构知之甚少。本文报道了具有代表性的聚合物电解质聚（氧化乙烯）（3）：LiCF3SO3 的晶体结构，该结构是通过粉末 X 射线衍射数据确定的。聚（氧化乙烯）（PEO）链沿晶轴 b 平行呈螺旋构象。锂离子由五个氧原子配位，其中三个是醚氧原子，另外两个分别来自两个相邻的 CF3SO3-基团。每个 CF3SO3- 依次桥接两个锂离子，形成与 PEO 链平行且相互交织的链。PEO 链之间没有链间连接，电解质可以看作是无限的柱状配位复合物。
