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	Electro-osmotic drag coefficients of proton exchange membranes
	Pan Ke ; Qi Liang ; Liu Yang ; Xie Xiao-feng
	2010-05-10 ; 2010-05-10
关键词	Practical Experimental/ electrophoresis ion exchange membranes osmosis polymers proton exchange membrane fuel cells swelling/ electro-osmotic drag coefficients proton exchange membranes Nafion direct methanol fuel cell DMFC atomic radiotracer method capillary electrophoresis method swelling H/sub 2/SO/sub 4/ concentration molecular diffusion heterogeneous diffusion behavior/ A8245 Electrochemistry and electrophoresis A8265F Film and membrane processes ion exchange dialysis osmosis, electro-osmosis A8630G Fuel cells A6630H Self-diffusion and ionic conduction in solid nonmetals B8410G Fuel cells
中文摘要	The electro-osmotic drag coefficients of series of Nafion reg proton exchange membranes were measured by potential difference generated by the pressure force of the working condition which was similar to that of direct methanol fuel cell (DMFC) . The measurement results in 0.5 mol/L H/sub 2/SO/sub 4/ were similar to the results obtained by Atomic Radiotracer method and Capillary Electrophoresis method. The swelling ratio of membranes decreased when the H/sub 2/SO/sub 4/ concentration increased. The water content of membranes had little change with the increasing of equilibrium concentration when the concentration of H/sub 2/SO/sub 4/ was higher than 0.5 mol/L. The thickness of membrane had some effect to molecular diffusion, when the thickness decreased to 50 mu m (Nafion reg membrane), the proton exchange membrane showed heterogeneous diffusion behavior due to the appearance of diffusion path through the membrane in the thickness direction.
语种	中文 ; 中文
出版者	Hunan Light Industry Research Institute ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22845]
专题	清华大学
推荐引用方式 GB/T 7714	Pan Ke,Qi Liang,Liu Yang,et al. Electro-osmotic drag coefficients of proton exchange membranes[J],2010, 2010.
APA	Pan Ke,Qi Liang,Liu Yang,&Xie Xiao-feng.(2010).Electro-osmotic drag coefficients of proton exchange membranes..
MLA	Pan Ke,et al."Electro-osmotic drag coefficients of proton exchange membranes".(2010).

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