Synthesis and high proton conductive performance of a quaternary vanadomolybdotungstosilicic heteropoly acid

Cai Huaxue; Wu Xuefei; Wu QingyinYan Wenfu

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Synthesis and high proton conductive performance of a quaternary vanadomolybdotungstosilicic heteropoly acid

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摘要

A new vanadium and molybdenum-substituted quaternary silicon-containing heteropoly acid H6SiW9MoV2O40 center dot 15H(2)O has been synthesized in this paper by the stepwise acidification and the stepwise addition of elemental solutions. The structural feature and hydration of this product were characterized by IR, UV, XRD and TG-DTA, and its proton conductivity was measured by electrochemical impedance spectroscopy (EIS). The result of EIS shows that H6SiW9MoV2O40 center dot 15H(2)O is a solid high-proton conductor with a conductivity of 6.01 x 10(-3) S cm(-1) at 22 degrees C and 80 relative humidity, which increases at higher temperatures. Its conductive activation energy is 27.5 kJ mol(-1), which suggests that the mechanism of proton conduction is dominated by the vehicle mechanism.

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《Dalton transactions: An international journal of inorganic chemistry》 |2016年第36期|14238-14242|共5页
作者
Cai Huaxue; Wu Xuefei; Wu QingyinYan Wenfu;
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作者单位

Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China;

Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China;

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正文语种英语
中图分类化学;无机化学;
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Synthesis and high proton conductive performance of a quaternary vanadomolybdotungstosilicic heteropoly acid

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