SPEEK based composite PEMs containing tungstophosphoric acid and modified with benzimidazole derivatives

被引：17

作者：

Celso, Fabricio ^{[1
]}

Mikhailenko, Serguei D. ^{[1
]}

Kaliaguine, Serge ^{[1
]}

Duarte, Ueiler L. ^{[2
]}

Mauler, Raquel S. ^{[2
]}

Gomes, Ailton S. ^{[3
]}

机构：

[1] Univ Laval, Dept Chem Engn, Quebec City, PQ G1K 7P4, Canada

[2] UFRGS, Inst Quim, Rio Grande Do Sul, Brazil

[3] UFRJ, Inst Macromol, Rio De Janeiro, Brazil

来源：

JOURNAL OF MEMBRANE SCIENCE | 2009年 / 336卷 / 1-2期

关键词：

Composite PEM; SPEEK; Benzimidazole derivatives; Heteropolyacid; PROTON-CONDUCTING MEMBRANES; POLY(ETHER ETHER KETONE); FUEL-CELL APPLICATIONS; POLYMER MEMBRANES; NITRILE)S;

D O I：

10.1016/j.memsci.2009.03.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Composite SPEEK based PEMs, containing tungstophosphoric acid (TPA)and modified with benzimidazole derivatives as cross-linking spacers, were prepared and characterized by a number of physico-chemical methods. It was observed, that the cross-linking agents strongly affect membrane properties, reducing their swelling, but at the same time decreasing their proton conductivity. However the cross-linkers provided a better retention of the TPA particles embedded within the composite membranes. The TPA particles enhanced the polymer conductivity to values overpassing that of the non-modified membranes. The performance of the PEMs was tested in hydrogen/air FC and found to be superior to that of Nafion 212 commercial PEM. The stability of the composite PEMs was adequate at least for 2 days, during which no degradation of the performance was observed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：118 / 127

页数：10

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