GDL 기공률과 Cathode 입구가습조건 변화에 따른 고분자 전해질 연료전지 성능분석

서지정보

ㆍ발행기관 : 한국기계기술학회 ㆍ수록지정보 : 한국기계기술학회지 / 14권 / 6호
ㆍ저자명 : 소재현, 이찬규, 김우태

목차

Abstract
1. 서론
2. 연구 방법
2.1 수치해석 모델
2.2 계산 조건
3. 결과 및 토의
3.1 상대습도에 따른 성능분석
3.2 기공률에 따른 성능분석
4. 결론
후기
참고문헌

영어 초록

In this paper, the PEMFC performance was studied using three dimensional numerical analysis. The effect of GDL porosity and cathode inlet humidity on the cell polarization curve was analyzed. The GDL porosity of 0.3, 0.5, 0.7 and cathode inlet humidity of 20, 40, 60, 80, 100 percent were selected as simulation cases while the anode inlet humidity was maintained as 100 percent. For a constant cell voltage condition, the highest current density was obtained at GDL porosity of 0.7 and cathode inlet humidity of 20 percent. As GDL porosity increases, the amount of hydrogen diffusion to membrane from the anode increases and chemical reaction also increases. As cathode inlet humidity decreases, oxygen mass fraction of cathode gas channel increases and chemical reaction also increases.

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