Polymer/Ionic Liquid Thermoplastic Electrolytes for Energy Storage Processed by Solvent Free Procedures

被引：18

作者：

Mejia, A. ^{[1
]}

Benito, E. ^{[1
]}

Guzman, J. ^{[1
]}

Garrido, L. ^{[1
]}

Garcia, N. ^{[1
]}

Hoyos, M. ^{[1
]}

Tiemblo, P. ^{[1
]}

机构：

[1] CSIC, ICTP, Juan Cierva 3, Madrid 28006, Spain

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2016年 / 4卷 / 04期

关键词：

Composite polymer electrolytes; Melt compounding; Thermoplastic electrolytes; Ionic liquids; Sepiolite fillers; LITHIUM-ION BATTERIES; POLY(ETHYLENE OXIDE); SEPIOLITE NANOFIBERS; BIS(FLUOROSULFONYL)IMIDE; NANOCOMPOSITES; CONDUCTIVITY; RHEOLOGY; SALTS;

D O I：

10.1021/acssuschemeng.5b01574

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of poly(ethylene oxide) (PEO)/lithium trifluoromethanesulfonate (LiTO/room temperature ionic liquid (RTIL) composite electrolytes has been prepared by melt compounding, using sepiolite modified with D-alpha-tocopherol polyethylene glycol 1000 succinate (TPGS-Sep) as filler. These electrolytes have been extensively characterized, including thermal stability, relaxations and transitions, rheology, conductivity, ion diffusivity, and salt dissociation. This work shows how the ability of TPGS-S to act as a physical cross-linking site for PEO allows these electrolytes to behave as solids at T > 70 degrees C, while the abundance of an ionic liquid phase makes the ion diffusion coefficients at 25 degrees C considerably high, closer to those of a viscous liquid than to those of a solid phase. This combination of rheological and electrical properties, together with their simple and scalable preparation by melt compounding, makes them a very appealing new class of sustainable electrolytes. This same concept can be applied to electrolytes with other types of salts, and therefore, electrolytes incorporating Al3+, Mg2+, or Na+ salts can be similarly prepared.

引用

页码：2114 / 2121

页数：8

共 35 条

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