Ion-Conductive Properties of a Polymer Electrolyte Based on Ethylene Carbonate/Ethylene Oxide Random Copolymer

被引：72
作者：
Morioka, Takashi [1 ,2 ]
Nakano, Koji [3 ]
Tominaga, Yoichi [1 ]
机构：
[1] Tokyo Univ Agr & Technol, Grad Sch Bioapplicat & Syst Engn, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan
[2] Lintec Corp, Res Ctr, Minami Ku, 7-7-3 Tsuji, Saitama, Saitama 3360026, Japan
[3] Tokyo Univ Agr & Technol, Dept Organ & Polymer Mat Chem, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2017年 / 38卷 / 08期
关键词：
carbon dioxide; ethylene carbonate/ethylene oxide copolymer; ionic conductivity; lithium-ion batteries; polymer electrolytes; CARBON-DIOXIDE; ALTERNATING COPOLYMERIZATION; ELECTROCHEMICAL PROPERTIES; POLY(PROPYLENE CARBONATE); POLY(ETHYLENE OXIDE); PROPYLENE-OXIDE; TRANSPORT; POLYCARBONATE; COMPLEXES; EPOXIDES;
D O I：
10.1002/marc.201600652
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A random copolymer of ethylene oxide with CO2, namely, poly(ethylene carbonate/ethylene oxide) (P(EC/EO)), has been synthesized as a novel candidate for polymer electrolytes. Electrolyte composed of P(EC/EO) and lithium bis(fluorosulfonyl) imide has an ionic conductivity of 0.48 mS cm(-1) and a Li transference number (t(+)) of 0.66 at 60 degrees C. To study ion-conductive behavior of P(EC/EO)-based electrolytes, the Fourier transform infrared (FT-IR) technique is used to analyze the interactions between Li+ and functional groups of the copolymer. The carbonate groups may interact preferentially with Li+ rather than the ether groups in P(EC/EO). This study suggests that copolymerization of carbonate and flexible ether units can realize both high conductivity and t+ for polymer electrolytes. High-performance P(EC/EO) electrolyte is expected to be a candidate material for use in all-solid-state batteries.
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页数：5
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