The co-pressure method is utilized to prepare a button-type porous electrolyte-containing solid oxide fuel cell(P-SOFC)with a porosity of about 10％.Electrochemical tests are conducted on P-SOFC and ordinary SOFC,respectively at 700℃.Results show that the electrochemical performance attenuation degree and impedance increase degree of P-SOFC during operation are 3/5 and 1/5 respectively that of ordinary SOFC.P-SOFC can maintain a potential as high as 0.85 V after 8 hours of long-term operation.The ordinary SOFC has more concentrated carbon element distribution than P-SOFC.It can be seen that a porous electrolyte structure can improve the sustainability and stability of battery discharge.This structure increases the anti-carbon deposition performance of the battery through changing the ratio of oxygen to carbon at anode,allowing the battery to maintain stable power output for a long time in a methane atmosphere.
关键词
多孔结构/固体氧化物燃料电池/抗积碳/电解质
Key words
porous structure/solid oxide fuel cell/resistance to carbon deposition/electrolyte
维普
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