Membrane Science and Technology

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Proton Conductivity of m-PH-SiO2/ Nafion composited membranes

Authors： ZOU Zhiyi1, WEI Xiao-lan1, FU Zhen1, LI Likun1, DING Jing2

Units： 1. The School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China；2. School of Engineering, Sun Yat-Sen University, Guangzhou 510275, China

KeyWords： m-PH-SiO2/Nafion; composite membrane; intermediate temperature; proton conductivity

ClassificationCode：TM911.4

year,volume(issue):pagination： 2011, 31(5):25-28

Abstract：

The mesoporous SiO2 with P2O5 hybrid in the pore walls (m-PH-SiO2) with higher surface 386m2•g-1 was synthesized by sol-gel method. The m-PH-SiO2/ Nafion composite membranes were prepared by recasting method with m-PH-SiO2 and Nafion dimethyl formamide solution. The proton conductivities of the membranes at 30oC ~200oC were measured by AC impedance technique. The results show that the conductivities of m-PH-SiO2/ Nafion membranes were higher than that of Nafion recasting membrane prepared under the same condition. The effect on proton conductivity and methanol permeability of filler content were studied, the result revealed that the optimal quantity of filled m-PH-SiO2 was 7%. However, the permeability of methanol increased appreciably with increasing of filled m-PH-SiO2.

Funds：

国家自然科学基金-广东联合基金项目（U1034005)；华南理工大学学生研究计划（SRP）;邹

AuthorIntro：

智毅（1962-），男，江苏无锡人，硕士，讲师，从事电解质膜研究. *联系人< xlwei@scut.edu.cn>

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