A modified Nafion membrane with extremely low methanol permeability via surface coating of sulfonated organic silica |
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| Authors: | Zhang Yuwei Cai Weiwei Si Fengzhan Ge Junjie Liang Liang Liu Changpeng Xing Wei |
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| Institution: | State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. |
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| Abstract: | We developed a method to significantly decrease the methanol permeability of a Nafion membrane that does not require sacrificing its proton conductivity and mechanical stability. The Nafion membrane modified by the coating of a thin layer of sulfonated organic silica on the membrane surface exhibits significantly decreased methanol permeability--the permeability is decreased to an undetectable level--while retaining an acceptable ionic conductivity of 0.029 S cm(-1). |
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