Earticle

초록

영어

In this paper, a three dimensional numerical analysis tool was applied to study the PEMFC performance characteristics. The porosity and electrical conductivity of GDL and CL as well as the relative humidity of anode and cathode channel gas were selected as simulation parameters. The porosity of GDL and CL was varied as 0.3, 0.5, and 0.7. The relative humidity of anode and cathode was varied as 0, 20, 40, 60, 80, and 100 percent. The electrical conductivity of GDL and CL was varied as 1, 5, 10, 50, 102, and 104 1/Ω·m. For a constant cell voltage condition, the maximum current density was obtained at GDL porosity of 0.7, anode relative humidity of 100 percent, cathode relative humidity of 60 percent, and electrical conductivity of 104 1/Ω·m for GDL and CL. As the porosity of GDL and CL increases, current density increases because reactant gases diffuse well. As the electrical conductivity of GDL and CL increases, current density increases due to increased electron transfer rate. As anode relative humidity increases, current density increases. Unlike anode, current density increases when cathode relative humidity increases from 0 percent to 60 percent. Then current density decreases when cathode relative humidity increases from 60 percent to 100 percent.

목차

Abstract
 1. 서론
 2. 연구 방법
  2.1 수치해석 모델
  2.2 계산 조건
 3. 결과 고찰 및 분석
  3.1 상대습도의 영향
  3.2 기공률의 영향
  3.3 전기전도도의 영향
 4. 결론
 참고문헌

키워드

고분자 전해질 연료전지 기공률 상대습도 전기전도도 촉매층 기체확산층 PEMFC Porosity Relative humidity Electrical conductivity CL GDL

저자

• 조재혁 [ Jae Hyuk Jo | 공주대학교 기계자동차공학부 학사과정 ] 저자
• 김우태 [ Woo Tae Kim | 공주대학교 기계자동차공학부 ] 교신저자

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