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Stability evaluation under cycling conditions of a fuel cell stack with internal methanol reformers
Date posted:
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Post Author
Tracey Biller
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In a new paper published in the International Journal of Hydrogen Energy, researchers describe the development of a fuel cell stack with 4 membrane electrode assemblies (MEAs) integrated with 4 fuel processors, containing molten CsH5(PO4)2 doped polybenzimidazole (PBI) membranes and highly active and selective CuZnGaAlOx catalysts, respectively.
The research demonstrates that this innovative fuel cell stack configuration can efficiently operate at 220 C and depending on the feed stream, either pure hydrogen or reformate gas mixtures, power outputs up to 20W can be obtained. Exceptional electrochemical performance and long-term stability of the fuel cell stack, even under transient conditions, are demonstrated with a 500h test including several runs at 220 C and on-off cycles from room temperature up to the operation temperature at 220 C.
The superior mechanical and thermal stability of this generation of CsH5(PO4)2-doped PBI membrane, together with highly efficient and stable copper-based methanol reforming catalyst, are combined in a compact and single power unit opening new prospects for next generation portable and off-grid energy applications.
Read more here.