Preparation and Characterization of DMFC Electrodes and MEAs | Zendy

Xinzhong Xue | Zendy; Christina Bock | Zendy; B. MacDougall | Zendy; David Kingston | Zendy

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Preparation and Characterization of DMFC Electrodes and MEAs

Author(s) -

Xinzhong Xue,

Christina Bock,

B. MacDougall,

David Kingston

Publication year - 2009

Publication title -

ecs transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.235

H-Index - 52

eISSN - 1938-6737

pISSN - 1938-5862

DOI - 10.1149/1.3242365

Subject(s) - materials science , electrode , anode , nafion , catalysis , chemical engineering , membrane , characterization (materials science) , layer (electronics) , composite material , ionomer , electrochemistry , nanotechnology , chemistry , polymer , organic chemistry , biochemistry , engineering , copolymer

A stencil method, that utilizes a dried powder made of the catalyst and the Nafion ionomer phase, is used to make catalyst layers and membrane electrode assemblies (MEAs). The influence of different hot-pressing conditions on the DMFC performance and various properties of the MEAs, in particularly on the properties of the anode, are investigated and compared to MEAs made by the conventional spray method. The highest DMFC performance is achieved using MEAs made by stenciling. It is also found that the membrane resistance (Rm), the resistance to proton transport within the catalyst layer (Rp) and the charge transfer resistance (Rct) towards the CH3OH oxidation reaction are lower for stenciled vs. sprayed anodes.Peer reviewed: NoNRC publication: Ye

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