Polytetrafluoroethylene (PTFE) reinforced poly(ethersulphone)-poly(vinyl pyrrolidone) composite membrane for high temperature proton exchange membrane fuel cells

被引：64
作者：
Lu, Shanfu [1 ,2 ]
Xiu, Ruijie [1 ,2 ]
Xu, Xin [1 ,2 ]
Liang, Dawei [1 ,2 ]
Wang, Haining [1 ,2 ]
Xiang, Yang [1 ,2 ]
机构：
[1] Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Beijing 100191, Peoples R China
[2] Beihang Univ, Sch Chem & Environm, Minist Educ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Beijing 100191, Peoples R China
来源：
JOURNAL OF MEMBRANE SCIENCE | 2014年 / 464卷
基金：
国家高技术研究发展计划(863计划); 美国国家科学基金会; 中国国家自然科学基金;
关键词：
Reinforced; PES-PVP/PTFE composite membranes; High temperature proton exchange; membrane fuel cells; POLYMER ELECTROLYTE MEMBRANE; ACID DOPED POLYBENZIMIDAZOLE; CONDUCTIVITY; PBI;
D O I：
10.1016/j.memsci.2014.03.053
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A high temperature proton-exchange membrane (PEM), polytetrafluoroethylene-poly(ethersulphone)-poly(vinyl pyrrolidone) (PES-PVP/PTFE) composite membranes, was prepared by impregnating PES-PVP solutions into the porous PTFE films to reinforce the mechanical properties thereof. After doping with phosphoric acid (PA), the tensile strength and Young's modulus of PES-PVP/PTFE composite membranes were much higher than those of the PA doped PES-PVP membrane. PA doping level of the composite membrane was positively related to the impregnating degree of PES-PVP into PTFE. In this study, the PES-PVP/PTFE composite membranes with the optimized impregnating degree exhibited a proton conductivity of 0.26 S cm(-1) at 180 degrees C with 560 wt% H3PO4 doped. The high-temperature PEMFCs with PES-PVP/PTFE-5 composite membrane demonstrated a maximum power density of 607 mW cm(-2) at 180 degrees C with H-2/O-2 system. Furthermore, the PES-PVP/PTFE composite membranes show a low H-2 crossover current density in high-temperature PEMFCs. (C) 2014 Elsevier B.V. All rights reserved.
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页码：1 / 7
页数：7
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