Modified Nafion Polymer Electrolyte Membranes by 7-Ray Irradiation Used in Direct Methanol Fuel Cells

被引：0

作者：

索春光 ^{[1
,2
]}

张文斌 ^{[3
]}

王华 ^{[4
]}

杨凤杰 ^{[5
]}

机构：

[1] Faculty of Science,Kunming University of Science and Technology

[2] Metallurgical Engineering Postdoctoral Flow Station,Kunming University of Science and Technology

[3] Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology

[4] Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology

[5] Department of Applied Engineering,Zhejiang Economic & Trade Polyetchnic

来源：

Journal of Shanghai Jiaotong University(Science) | 2012年 / 17卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Nafion; 117; membrane; γ-ray irradiation; modification; direct methanol fuel cell(DMFC);

D O I：

暂无

中图分类号：

TM911.4 [燃料电池];

学科分类号：

0808 ;

摘要：

Modification of the commercial polymer electrolyte membrane（PEM） Nafion 117 byγ-ray irradiation to produce an improved proton exchange membrane for direct methanol fuel cells（DMFCs） was described.The Nafion 117 membrane was exposed under 7-ray irradiation circumstance with the irradiation doses from 10;to 10;Gy.Subsequently the properties of the membrane itself,in terms of swelling ratio,water uptake rate, proton conductivity and methanol permeability,together with the performance of its membrane electrode assembly （MEA） in DMFC were analyzed and contrasted with the untreated material.When the Nafion 117 membrane was exposed underγ-ray irradiation circumstance,the degradation and crosslinking reactions occurred at the same time.Specific scopes of theγ-ray irradiation dose may cause the membrane crosslinking,thus reduce the membrane swelling ratio and decrease the methanol crossover.By reducing the membrane swelling ratio and methanol permeation,the single DMFC with the modified Nafion 117 membrane produced reasonable power density performance as high as 32 W/m;under 2 mol/L methanol solution at room temperature.

引用

页码：579 / 585

页数：7