Efficient hydrogen production from aqueous methanol in a PEM electrolyzer with porous metal flow field: Influence of change in grain diameter and material of porous metal flow field

Previous research has shown that hydrogen production performance of a PEM methanol electrolyzer was largely improved with a porous flow field made of sintered spherical metal powder compared with a conventional groove type flow field. In this study, we experimentally investigated the effect of the c...

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Bibliographic Details
Published in:International journal of hydrogen energy 2013-08, Vol.38 (24), p.9945-9953
Main Authors: Pham, Anh Tuan, Baba, Tomohiro, Shudo, Toshio
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Electrolytic cells
Energy
Exact sciences and technology
Fuels
Grain diameter
Grains
Grooves
Hydrogen
Hydrogen production
Hydrogen-based energy
Methanol Electrolysis
Methyl alcohol
Nickel base alloy
Nickel base alloys
Porous materials
Porous metal flow field
Porous metals
Stainless steel
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Summary:Previous research has shown that hydrogen production performance of a PEM methanol electrolyzer was largely improved with a porous flow field made of sintered spherical metal powder compared with a conventional groove type flow field. In this study, we experimentally investigated the effect of the change in grain diameter and material of the porous metal flow field on hydrogen production performance in a PEM methanol electrolyzer cell. The experimental results indicated that the hydrogen production performance of the electrolyzer cell was improved by reducing the grain diameter. This could be mainly attributed to the lower interfacial contact resistance by reducing the grain diameter of the porous metal flow field. For investigating the influence of material, cell performances with a stainless steel and a nickel base alloy were compared. •A new type anode compartment made of sintered spherical metal powder was used.•Influence of the powder grain size on hydrogen production was investigated.•Influence of the powder material was also investigated.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2013.05.171