고온 고분자 전해질막 연료전지 수소극 전극에서 서로 다른 가스 확산층에 따른 최적 바인더 함량 결정

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 33; no. 1; pp. 38 - 52
• Main Authors: 전현수(HYUNSOO CHUN), 김도형(DO-HYUNG KIM), 정현승(HYEON-SEUNG JUNG), 박찬호(CHANHO PAK)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2022
• Subjects: 기계공학; Gas diffusion layer(가스확산층); High temperature polymer electrolyte membrane fuel cell(고온 고분자 전해질막 연료전지); Anode(수소극); Binder content(바인더 함량)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2022.33.1.38

Two different gas diffusion layers having noticeable differences in micro-porous layer's (MPL's) crack were studied as a substrate for the gas diffusion electrode (GDE) with different binder/carbon (B/C) ratios in high-temperature polymer electrolyte fuel cell (Ht-PEMFC). As a result, the performance defined as the voltage at 0.2 A/cm2 and maximum power density from the single cells using GDEs from H23 C2 and SGL38 BC with different B/C ratios were compared. GDEs from H23 C2 showed a proportional increase of the voltage with the binder content on the other hand GDEs from SGL38 BC displayed a proportional decline of the voltage to the binder content. It was revealed that MPL crack influences the structure of catalyst layer in GDEs as well as affects the RCathode which is in close connection with the Ht-PEMFC performance.