Simultaneous Improvement of Ionic Conductivity and Mechanical Strength in Block Copolymer Electrolytes with Double Conductive Nanophases

被引：34

作者：

Cao, Xiao-Han ^{[1
]}

Li, Jun-Huan ^{[1
]}

Yang, Mu-Jia ^{[1
]}

Yang, Jia-Liang ^{[1
]}

Wang, Rui-Yang ^{[1
]}

Zhang, Xing-Hong ^{[1
]}

Xu, Jun-Ting ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2020年 / 41卷 / 07期

基金：

中国国家自然科学基金;

关键词：

block copolymers; ionic conductivity; mechanical properties; polymer electrolytes; POLYMER ELECTROLYTES; MICROPHASE SEPARATION; MOLECULAR-WEIGHT; ORDER-DISORDER; PHASE-BEHAVIOR; TRANSPORT;

D O I：

10.1002/marc.201900622

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 most daunting challenge of solid polymer electrolytes (SPEs) is the development of materials with simultaneously high ionic conductivity and mechanical strength. Herein, SPEs of lithium bis-(trifluoromethanesulfonyl)imide (LiTFSI)-doped poly(propylene monothiocarbonate)-b-poly(ethylene oxide) (PPMTC-b-PEO) block copolymers (BCPs) with both blocks associating with Li+ ions are prepared. It is found that the PPMTC-b-PEO/LiTFSI electrolytes with double conductive phases exhibit much higher ionic conductivity (2 x 10(-4) S cm(-1) at r.t.) than the BCP electrolytes with a single conductive phase. Concurrently, the storage moduli of PPMTCn-b-PEO44/LiTFSI electrolytes are approximate to 1-4 orders of magnitude higher than that of the neat PEO/LiTFSI electrolytes. Therefore, simultaneous improvement of ionic conductivity and mechanical properties is achieved by construction of a microphase-separated and disordered structure with double conductive phases.

引用

页数：6

共 36 条

[31] Mixed-Salt Effects on the Ionic Conductivity of Lithium-Doped PEO-Containing Block Copolymers [J].

Young, Wen-Shiue ;

Albert, Julie N. L. ;

Schantz, A. Benjamin ;

Epps, Thomas H., III .

MACROMOLECULES, 2011, 44 (20) :8116-8123

[32] Ionic Conductivity of Low Molecular Weight Block Copolymer Electrolytes [J].

Yuan, Rodger ;

Teran, Alexander A. ;

Gurevitch, Inna ;

Mullin, Scott A. ;

Wanakule, Nisita S. ;

Balsara, Nitash P. .

MACROMOLECULES, 2013, 46 (03) :914-921

[33] All solid-state polymer electrolytes for high-performance lithium ion batteries [J].

Yue, Liping ;

Ma, Jun ;

Zhang, Jianjun ;

Zhao, Jingwen ;

Dong, Shanmu ;

Liu, Zhihong ;

Cui, Guanglei ;

Chen, Liquan .

ENERGY STORAGE MATERIALS, 2016, 5 :139-164

[34] Ionic Conductivity, Self-Assembly, and Viscoelasticity in Poly(styrene-b-ethylene oxide) Electrolytes Doped with LiTf [J].

Zardalidis, George ;

Gatsouli, Katerina ;

Pispas, Stergios ;

Mezger, Markus ;

Floudas, George .

MACROMOLECULES, 2015, 48 (19) :7164-7171

[35] Precise synthesis of sulfur-containing polymers via cooperative dual organocatalysts with high activity [J].

Zhang, Cheng-Jian ;

Wu, Hai-Lin ;

Li, Yang ;

Yang, Jia-Liang ;

Zhang, Xing-Hong .

NATURE COMMUNICATIONS, 2018, 9

[36] Aliphatic Polycarbonate-Based Solid-State Polymer Electrolytes for Advanced Lithium Batteries: Advances and Perspective [J].

Zhang, Jianjun ;

Yang, Jinfeng ;

Dong, Tiantian ;

Zhang, Min ;

Chai, Jingchao ;

Dong, Shanmu ;

Wu, Tianyuan ;

Zhou, Xinhong ;

Cui, Guanglei .

SMALL, 2018, 14 (36)

← 1 2 3 4 →