Discontinuous Changes in Ionic Conductivity of a Block Copolymer Electrolyte through an Order-Disorder Transition

被引：61
|
作者：
Teran, Alexander A. [1 ,3 ]
Mullin, Scott A. [1 ,3 ]
Hallinan, Daniel T., Jr. [1 ,3 ]
Balsara, Nitash P. [1 ,2 ,3 ]
机构：
[1] Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA
[2] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
来源：
ACS MACRO LETTERS | 2012年 / 1卷 / 02期
基金：
美国国家科学基金会;
关键词：
POLY(ETHYLENE OXIDE)/LII MELTS; MOLECULAR-DYNAMICS SIMULATIONS; MICROPHASE SEPARATION; POLYMER ELECTROLYTES; WEIGHT; TRANSPORT; BATTERIES;
D O I：
10.1021/mz200183t
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The ionic conductivity of a block copolymer electrolyte was measured in an in situ small-angle X-ray scattering experiment as it transitioned from an ordered lamellar structure to a disordered phase. The ionic conductivity increases discontinuously as the electrolyte transitions from order to disorder. A simple framework for quantifying the magnitude of the discontinuity is presented. This study lays the groundwork for understanding the effect of more complex phase transitions such as order-order transitions on ion transport.
引用
收藏
页码：305 / 309
页数：5
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