Visualization of water on through-plane direction of GDL using X-ray radiography
In this investigation, we visualized water distribution and behavior of water on through plane direction of GDL (Gas Diffusion Layer), which is one of components of PEMFC, using X-ray radiography. In order to investigate water distribution and behavior at GDL of PEMFC, the facilities was set up at the 7B2 beam line in Pohang Accelerator Laboratory. The phenomena of cathode side GDL is more important because the cathode side GDL has more water than the anode side. For this reason, the cathode side GDL was targeted and test section (Figure 1) was made to make similar boundary condition with a cathode side GDL of operating PEMFC. GDL faced two single channels. One is air channel as cathode gas channel of PEMFC and the other is liquid channel as cathode catalyst layer. Water is produced in cathode catalyst layer and almost of this water transport through cathode GDL. Because of this, liquid channel was adopted as catalyst layer. Images of water distribution were recorded per 4 second under various liquid pressure conditions. Water content was calculated from these images using mathematic process.
PEMFC Gas Diffusion Layer X-ray radiography water management
Jongrok Kim TaeJoo Kim Junho Je Massoud Kaviany Sang Young Son MooHwan Kim
Department of Mechanical Engineering, POSTECH, Pohang The Korea Atomic Energy Research Institute, Daejeon Department of Mechanical Engineering, University of Michigan, Ann Arbor, USA Department of Mechanical Engineering, University of Cincinnati, Cincinnati, USA
国际会议
西安
英文
101-104
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）