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A Study on Unit Cell Design for the Performance Enhancement in PEMFC System  

Kim Hong-Gun (전주대학교 기계공학과)
Kim Yoo-Shin (전주대학교 대학원 기계공학과)
Yang Sung-Mo (전북대학교 기계항공시스템 공학부)
Nah Seok-Chan (전북대학교 대학원 정밀기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.4, 2005 , pp. 104-109 More about this Journal
Abstract
The catalyst layer design is one of the most important factors to enhance the performance of PEMFC(Proton Exchange Membrane Fuel Cell) system. The hydrophobic and ion conductive type is studied for the MEA(Membrane Electrolyte Assembly). It is found that those have some limitations for performance enhancement when they are used separately. Thus, the dual catalyst type, a mixed model, is developed for the better MEA performance. In the meantime, the design of flow field plate is subsequently carried out in order to give more enhanced output during its operation. The conductivity of flow field plate showed better performance in the case of manufactured by the more compressed process(20MPa) than by the less compressed process(10MPa). The micro-structure of the flow field plate is examined in details using SEM(Scanning Electron Microscope) to analyse the effects on the different compression processes.
Keywords
MEA; Flow Field Plate; PEMFC; Dual Catalyst; Scanning Electron Microscope;
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