Covalent-ionically cross-linked polyetheretherketone proton exchange membrane for direct methanol fuel cell

被引：26

作者：

Luo, Hongze ^{[1
]}

Vaivars, Guntars ^{[2
]}

Mathe, Mkhulu ^{[1
]}

机构：

[1] CSIR, ZA-0001 Pretoria, South Africa

[2] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 16期

关键词：

Cross-linked; SsPEEK-WC; Water uptake; Proton conductivity; Proton exchange membrane; Direct methanol fuel cell; PEEK-WC MEMBRANES; COMPOSITE MEMBRANES; CONDUCTIVITY; STATE;

D O I：

10.1016/j.jpowsour.2010.03.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the proton exchange membrane prepared by covalent-ionically cross-linking water soluble sulfonated-sulfinated poly(oxa-p-phenylene-3,3-phthalido-p-phenylene-oxa-p-phenylene-oxyphenylene) (SsPEEK-WC) is reported. Compared with covalent cross-linked PEEK-WC membrane, this covalent-ionically cross-linked PEEK-WC membrane exhibits extremely reduced water uptake and methanol permeability, but just slightly sacrificed proton conductivity. The proton conductivity of the covalent-ionically cross-linked PEEK-WC membrane reaches to 2.1 x 10(-2)S cm(-1) at room temperature and 4.1 x 10(-2)S cm(-1) at 80 degrees C. The methanol permeability is 1.3 x 10(-7) cm(2) s(-1), 10 times lower than that of Nafion (R) 117 membrane. The results suggest that the covalent-ionically cross-linked PEEK-WC membrane is a promising candidate for direct methanol fuel cell because of low methanol permeability and adequate proton conductivity. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：5197 / 5200

页数：4

共 18 条

[1] Sulfonated PEEK-WC membranes for proton-exchange membrane fuel cell: Effect of the increasing level of sulfonation on electrochemical performances [J].