Feasibility Analysis of Nb Doped SFM as a Symmetric Electrode Material for SOFC
With the"carbon peak"and"carbon neutrality"receiving increasing attention,renewable energy generation grid connection technology has rapidly developed.To improve the electrochemical performance of perovskite oxide mate-rials as electrodes for solid oxide fuel cells,niobium doped iron sites in perovskite oxide materials were studied as sym-metric electrode materials for solid oxide fuel cells.The results show that when the doping amount of niobium is 0.05,the conductivity is the highest at 28S·cm-1,which is consistent with the result of the minimum required activation en-ergy;After doping with niobium element,the electrochemical performance of perovskite oxide materials has been signifi-cantly improved.When the niobium doping amount is 0.05,the resistance value of the material is the smallest,which is 0.080 Ω cm2;At 650℃,700℃,750℃,and 800℃,the power density of the battery is 0.25W·cm-2,0.40W·cm-2,0.56W·cm-2,and 0.71W·cm-2,respectively.
Solid oxide fuel cellSymmetrical electrodePerovskite oxideNew energy power generation technology
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