Ion Conductivity of Membrane in Proton Exchange Membrane Fuel Cell

被引：3
|
作者：
Hwang, Byungchan [1 ]
Chung, Hoi-Bum [1 ]
Lee, Moo-Seok [2 ]
Lee, Dong-Hoon [2 ]
Park, Kwonpil [1 ]
机构：
[1] Sunchon Natl Univ, 315 Maegok Dong, Sunchon 57922, Jeonnam, South Korea
[2] Kolon Res Inst, 207-2 Mabuk Dong, Yongin 16910, Gyunggi, South Korea
来源：
KOREAN CHEMICAL ENGINEERING RESEARCH | 2016年 / 54卷 / 05期
关键词：
PEMFC; Membrane; Ion conductivity; Water flux; Simulation;
D O I：
10.9713/kcer.2016.54.5.593
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effects of relative humidity, current density and temperature on the ionic conductivity were studied in PEMFC (Proton Exchange Membrane Fuel Cell). Water contents and water flux in the electrolyte membrane largely affected ion conductivity. The water flux was modelled and simulated by only electro-osmotic drag and back-diffusion of water. Ion conductivities were measured at membrane state out of cell and measured at MEA (Membrane and Electrode Assembly) state in condition of operation. The water contents in membrane increase as relative humidity increased in PEMFC, as a results of which ion conductivity increased. Current enhanced electro-osmotic drag and back diffusion and then water contents linearly increased. Enhancement of current density results in ion conductivity. Ion conductivity of about 40% increased as the temperature increased from 50 degrees C to 80 degrees C.
引用
收藏
页码：593 / 597
页数：5
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