Synthesis and Characterization of Polybenzimidazole/α-Zirconium Phosphate Composites as Proton Exchange Membrane

被引：30

作者：

Zhang, Qi ^{[1
]}

Liu, Hui ^{[1
]}

Li, Xun ^{[1
]}

Xu, Rong ^{[1
]}

Zhong, Jing ^{[1
]}

Chen, Ruoyu ^{[1
]}

Gu, Xuehong ^{[2
]}

机构：

[1] Changzhou Univ, Jiangsu Key Lab Adv Catalyt Mat & Technol, Sch Petrochem Engn, Changzhou 213164, Jiangsu, Peoples R China

[2] Nanjing Univ Technol, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

来源：

POLYMER ENGINEERING AND SCIENCE | 2016年 / 56卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ACID DOPED POLYBENZIMIDAZOLE; POLYMER ELECTROLYTE; CONDUCTIVITY; COPOLYMERS;

D O I：

10.1002/pen.24287

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To improve the high-temperature performance of proton exchange membranes, the polybenzimidazole (PBI)/alpha-zirconium phosphate (alpha-Zr(HPO4)(2)center dot nH(2)O, alpha-ZrP) proton exchange composite membranes were prepared in this study. PBI polymer containing a large amount of ether units has been synthesized from 3,30-diaminobenzidine (DAB) and 4,40-oxybis (benzoic acid) by a direct polycondensation in polyphosphoric acid. The polymer exhibited a good solubility in most polar solvents. Inorganic proton conductor alpha-ZrP nanoparticles have been obtained using a synthesis route involving separate nucleation and aging steps (SNAS). The effects of alpha-ZrP doping content on the composite membrane performance were investigated. It was found that the introduction of ZrP improved the thermal stability of the composite membranes. The PBI/ZrP composite membranes exhibited excellent mechanical strength. The composite membrane with 10 wt% ZrP showed the highest proton conductivity of 0.192 S cm(-1) at 160 degrees C under anhydrous condition. The proton conducting mechanism of the PBI/ZrP composite membranes was proposed to explain the proton transport phenomena. The experimental results suggested that the PBI/ZrP composite membranes may be a promising polymer electrolyte used in high temperature proton exchange membrane fuel cells (HT-PEMFCs) under anhydrous condition. (C) 2016 Society of Plastics Engineers

引用

页码：622 / 628

页数：7

共 31 条

[1] Novel aniloxy-polybenzimidazoles as proton conducting membranes for high temperature PEMFCs [J].