Modified Nafion(R) Polymer Electrolyte Membranes by-ray Irradiation Used in Direct Methanol Fuel Cells
(0) Modification of the commercial polymer electrolyte membrane (PEM) Nafion(R)ll7 by-ray irradiation,to produce an improved proton exchange membrane for direct methanol fuel cells (DMFCs) is described.The Nafion(R)ll7 membrane was exposed under-ray irradiation circumstance with the irradiation doses from lkGy to 100kGy.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(R)117 membrane was exposed under ray irradiation circumstance,the degradation and crosslinking reactions occurred at the same time.Specific scopes of the-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(R)117 membrane produced reasonable power density performance as high as 3.2mW cm-2 under 2M methanol solution at room temperature.
Nation(R)l17 membrane -ray irradiation modify direct methanol fuel cell
Suo Chunguang Wang Hua Zhao Jianjun Quan Xiaohong
Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China; Metallurgic Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology,Kunming 6 Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China
国际会议
上海
英文
194-194
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）