Pore-network Study of Liquid Water Transport through Multiple Gas Diffusion Medium in PEMFCs

고분자 연료전지의 다공성층 내에서의 액상수분 이동에 관한 공극-네트워크 해석 연구

  • 강정호 (서울대학교 대학원 기계항공공학부) ;
  • 이상건 (서울대학교 대학원 기계항공공학부) ;
  • 남진현 (대구대학교 공과대학 기계공학) ;
  • 김찬중 (서울대학교 대학원 기계항공공학부)
  • Published : 2011.05.26

Abstract

Water is continuously produced in polymer electrolyte membrane fuel cell (PEMFC), and is transported and exhausted through polymer electrolyte membrane (PEM), catalyst layer (CL), microporous layer (MPL), and gas diffusion layer (GDL). The low operation temperatures of PEMFC lead to the condensation of water, and the condensed water hinders the transport of reactants in porous layers (MPL and GDL). Thus, water flooding is currently one of hot issues that should be solved to achieve higher performance of PEMFC. This research aims to study liquid water transport in porous layers of PEMFC by using pore-network model, while the microscale pore structure and hydrophilic/hydrophobic surface properties of GDL and MPL were fully considered.

Acknowledgement

Supported by : 한국연구재단