Modification of Nafion membranes with ternary composite materials for direct methanol fuel cells

被引：12
|
作者：
Fang, Yong [1 ]
Wang, Tongtao [1 ]
Miao, Ruiying [1 ]
Tang, Ling [1 ]
Wang, Xindong [1 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2010年 / 55卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Direct methanol fuel cell; Nafion; Composite membranes; Proton conductivity; Methanol permeability; PROTON-EXCHANGE MEMBRANES; POLY(ETHER ETHER KETONE); NANOCOMPOSITE MEMBRANE; BLEND MEMBRANES; PERFORMANCE; CROSSOVER; CATHODE; DMFCS;
D O I：
10.1016/j.electacta.2009.11.081
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Composite membranes for direct methanol fuel cells (DMFCs) were prepared by using Nafion 15 membrane modification with polyvinyl alcohol (PVA), polyimide (PI) and 8-trimethoxysilylpropyl glycerin ether-1,3,6-pyrenetrisulfonic acid (TSPS). The performance of the composite membranes was evaluated in terms of water sorption, dimensional stability, thermal stability, proton conductivity. methanol permeability and cell performance. The proton conductivity was slightly decreased by 1-3% compared with Nafion 115, which still kept the high proton conduction of Nafion 115. The methanol permeability of Nafion/PI-PVA-TSPS composite membranes was remarkably reduced by 35-55% compared with Nafion 115. The power density of DMFCs with Nafion/PI-PVA-TSPS composite membranes reached to 100 mW/cm(2), exceeding that with Nafion 115 (68m W/cm(2)). (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2404 / 2408
页数：5
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