| 학회 | 한국화학공학회 |
| 학술대회 | 2003년 가을 (10/24 ~ 10/25, 한양대학교) |
| 권호 | 9권 2호, p.2406 |
| 발표분야 | 에너지/환경 |
| 제목 | The effect of the size of pore-forming additives on polymer electrolyte membrane fuel cell |
| 초록 | The influence of pore-size distribution of the diffusion layer on mass-transport problems of proton exchange membrane fuel cells(PEMFCs) is investigated using electrodes with hydrophobic diffusion layers for which the pore-size distribution is designed by pore-forming additive. It is confirmed that the pore-size distribution of the diffusion layer is a more critical parameter for mass-transport processes within the electrode and for cell performance characteristics than the total porosity itself. This study focused on the differences of the performance according to the size of pore-forming additives. Pore-forming additives for PEMFCs are used to minimize the effect of polarization which causes the decrease of cell performance. Single-cell performance tests and ac impedance analyses indicate that the performance loss due to mass-transport limitations can be reduced by enlarging the macropore volume in the diffusion layer. Catalyst layer was prepared onto the gas diffusion layer using spraying method. |
| 저자 | 이성우, 손동훈, 김홍석, 이한규, 이태희 |
| 소속 | 연세대 |
| 키워드 | Pore-forming additives; Mass-transport; Diffusion layer; Pore-size distribution |
| 원문파일 | 초록 보기 |
