Effect of ionic liquid 1-ethyl-3-methylimidazolium hydrogen sulfate on zinc-ion dynamics in PEO/PVdF blend gel polymer electrolytes

被引：17

作者：

Rathika, R. ^{[1
]}

Suthanthiraraj, S. Austin ^{[1
]}

机构：

[1] Univ Madras, Dept Energy, Guindy Campus, Chennai 600025, Tamil Nadu, India

来源：

IONICS | 2019年 / 25卷 / 03期

关键词：

Gel polymer electrolytes; Ionic liquid; Ionic conductivity; XRD; FTIR; SEM; Dielectric behaviour; ELECTRICAL-CONDUCTIVITY; PVDF-HFP; RELAXATION; TRANSPORT; BEHAVIOR; SIO2;

D O I：

10.1007/s11581-018-2709-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Room temperature ionic liquid 1-ethyl-3-methylimidazolium hydrogen sulfate (EMIHSO4) incorporated gel polymer electrolyte membranes were prepared with PEO/PVdF blend containing 15wt % zinc triflate (Zn (CF3SO3)(2)) salt. These electrolyte membranes with different ionic liquid concentrations were characterized in detail by X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), differencial scanning calorimetry (DSC) and electrical impedance spectroscopy (EIS). Amongst all the ionic liquid concentrations investigated, 10wt % EMIHSO4-incorporated gel electrolyte showed interesting electrochemical performance with the highest ionic conductivity of 5.8x10(-4)Scm(-1) at room temperature. Besides, ionic interactions of ethyl methylimidozolium cation (EMI+), ether oxygens of PEO and electronegative fluorine ions of PVdF with triflate anions and zinc cations at 10wt % EMIHSO4 tend to release more number of free ions. An impressive amount of amorphous phase also emerged with an addition of 10wt % EMIHSO4 by altering the semi-crystalline nature of PEO thereby facilitating rapid ion transport to occur.

引用

页码：1137 / 1146

页数：10

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