Structure and inter-phase stability in solvent-free low-dimensional polymer electrolytes with high lithium conductivity
作者:Yungui Zheng、Jianguo Liu、Yen-Po Liao、Goran Ungar、Peter V. Wright
DOI:10.1039/b401042f
日期:——
Two Williamson procedures for the synthesis of the amphiphilic polymers poly[2,5,8,11,14-pentaoxapentadecamethylene(5-alkyloxy-1,3-phenylene)]
I
(abbrev. CmO5) are compared. Method X gives polyether-esters; method Y gives pure polyethers. In both, a dehydration reaction gives rise to CmO5–CmO1 copolymers. Two-phase systems of I with polyoxytetramethylene and polyoxytrimethylene copolymers (II) and LiBF4 have been prepared with and without an interfacial stabiliser copolymer III. Highest and most stable conductivities (>5 × 10−4 S cm−1 at ambient) with low temperature dependence were observed with III, but I from method Y showed a tendency to phase separate at ambient.
用于合成两亲性聚合物聚[2,5,8,11,14-五氧杂十五亚甲基(5-烷氧基-1,3-亚苯基)]的两种Williamson程序
我
(缩写 CmO5)进行了比较。方法X得到聚醚-酯;方法Y给出纯聚醚。在这两种情况下,脱水反应都会产生 CmO5-CmO1 共聚物。已经制备了具有和不具有界面稳定剂共聚物III的I与聚氧四亚甲基和聚氧三亚甲基共聚物(II)以及LiBF4的两相体系。 III 观察到具有较低温度依赖性的最高且最稳定的电导率(环境下>5 × 10−4 S cm−1),但方法 Y 中的 I 显示出在环境下发生相分离的趋势。