

FOLLOWUS
a.Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China
b.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
E-mail lcgao@buaa.edu.cn (L.C.G.)
E-mail qchen@ciac.ac.cn (Q.C.)
Received:26 June 2017,
Accepted:02 August 2017,
Online First:30 October 2017,
Published:05 January 2018
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Yu-Feng Lyu, Zhi-Jie Zhang, Chang Liu, et al. Random Binary Brush Architecture Enhances both Ionic Conductivity and Mechanical Strength at Room Temperature[J]. Chinese Journal of Polymer Science, 2018, 36(1): 78-84.
Yu-Feng Lyu, Zhi-Jie Zhang, Chang Liu, et al. Random Binary Brush Architecture Enhances both Ionic Conductivity and Mechanical Strength at Room Temperature[J]. Chinese Journal of Polymer Science, 2018, 36(1): 78-84. DOI: 10.1007/s10118-018-2016-z.
The ionic conductivity and the mechanical strength are two key factors for the performance of poly(ethylene oxide) (PEO) based polyelectrolytes. However
crystallized PEO suppresses ion conductivity at low temperature and melted PEO has low mechanical strength at high temperature. Here
random binary brush copolymer composed of PEO- and polystyrene (PS)-based side chains is synthesized. PEO crystallinity is suppressed by the introduction of PS brushes. Doping with lithium trifluoromethanesulfonate (LiTf) induces microphase separation. Due to a random arrangement of the brushes
the microphase segregation is incomplete even at high salt loading
which provides both high ionic conductivity and high mechanical strength at room temperature. These results provide opportunities for the design of polymeric electrolytes to be used at room temperature.
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