A Novel Molybdotungstosilicate Gel Electrolyte with Wide Electrochemical Stability Window

被引：5

作者：

Xie, Zhirong ^{[1
]}

Wu, Qingyin ^{[1
]}

Dai, Wenshuang ^{[2
]}

He, Fengwei ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China

[2] Liaoning Inst Sci & Technol, Sch Biomed & Chem Engn, Benxi 117004, Liaoning, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2018年 / 13卷 / 12期

关键词：

polyoxometalates; structural; ionic conductivity; amorphous materials; electrochemical stability potential window; IONIC LIQUIDS; POLYOXOMETALATE CLUSTER; POLYMER ELECTROLYTE; ACID;

D O I：

10.20964/2018.12.33

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

New hybrid gel electrolyte [MIMPS](4)SiW11MoO40 (IL-SiW11Mo) has been synthesized from the heteropoly acid H4SiW11MoO40 and 1-(3-sulfonic group) propyl-3-methyl imidazolium (abbreviated as MIMPS). The results of FTIR and XRD reveal that the synthesized polyoxometalate-based gel electrolyte possesses lamellar structure and exhibits the characteristic thermo-tropic liquid-crystalline behavior, which can undergo a phase transformation from a viscous gel state to liquid state below 100 degrees C. Its ionic conductivity of up to similar to 10(-3) S cm(-1) was observed above the phase transformation temperature. The electrochemical stability potential window (ESW) of IL-SiW11Mo was found to be about 4V at room temperature. The electrochemical impedance spectroscopy (EIS) was carried out to study the capacitance and ion mobility of IL-POM used as electrolyte. The results show that IL-SiW11Mo has high capacitance and fast ion mobility.

引用

页码：11684 / 11690

页数：7

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