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For polymer electrolyte fuel cells (PEFCs), Pt–Al2O3 catalyst coatings were developed to convert hydrogen off-gas of PEFCs to water. To ignite the hydrogen oxidation at room temperature with negligible induction period, the Pt–Al2O3 catalyst coatings on the walls were modified from hydrophilicity to superhydrophobicity via grafting by 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FAS). The modified Pt–Al...
For polymer electrolyte fuel cells (PEFCs), a catalytic burner was proposed to convert a low energy hydrogen exhaust stream from PEFCs to water. Microreactors with Pt based catalyst coating showed their strength in safely handing the explosive mixtures of gaseous hydrogen and oxygen because dimensions of microchannel are smaller than quenching distance of hydrogen. However, the induction period was...
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