고온 고분자전해질 연료전지 박판형 분리판의 유로 설계 및 스택 성능 평가

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 29; no. 5; pp. 442 - 449
• Main Authors: 김지홍(Ji-hong Kim), 김민진(Minjin Kim), 김진수(Jinsoo Kim)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2018
• Subjects: 기계공학; 스택; Thermal transfer; Thin plate separator; 가스 분배; 박판형 분리판; 이중 매니폴드; Gas distribution; 열전달; High temperature polymer electrolyte fuel cell; 고온 고분자전해질연료전지; Double manifold; Stack
• ISSN: 1738-7264; 2288-7407

Research on High temperature polymer electrolyte fuel cell (HT-PEMFC) has actively been conducted all over the world. Since the HT-PEMFC can be operated at a high temperature of $120-180^{\circ}C$ using phosphoric acid-doped polybenzimidazole (PBI) electrolyte membrane, it has considerable advantages over conventional PEMFC in terms of operating conditions and system efficiency. However, If the thermal distribution is not uniform in the stack unit, degradation due to local reaction and deterioration of lifetime are difficult to prevent. The thin plate separator reduces the volume of the fuel cell stack and improves heat transfer, consequently, enhancing the cooling effect. In this paper, a large area flow field of thin plate separator for HT-PEMFC is designed and sub-stack is fabricated. We have studied stack performance evaluation under various operating conditions and it has been verified that the proposed design can achieve acceptable stack performance at a wide operating range.