Preparation of Ethanol-based Proton-conducting Solid Oxide Fuel Cell and Its Performance
Aiming at the problem of low anode catalytic activity and carbon deposition in proton-conducting ethanol fuel cells,a proton-conducting solid oxide fuel cell with a dendritic pore anode structure was prepared using the in-situ phase formation method.By loading efficient nano-catalysts in the micro-channels of the dendritic pore anode,an internal microchannel reactor was constructed for the internal conversion of ethanol fuel.Experimental results show that under con-ditions that the volume fraction of ethanol fuel is 10％and the operating temperature is 650 ℃,the peak power density of the cell increases from 0.076 W/cm2 to 0.161 W/cm2,the maximum power density of the cell increases by 111％.When subjected to discharge stability testing at a current density of 0.5A/cm2,the cell operates stably for 57 h.Due to the high catalytic activity of the fibrous catalyst,the oxidation reaction of carbon is accelerated,and the gasification of carbon is promoted.No significant carbon deposition is observed at the anode-electrolyte interface of the cell.
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