Research Progress in Coking Resistance of Ni-based Anodes for Solid Oxide Fuel Cells
Solid oxide fuel cell(SOFC)is an emerging energy technology to alleviate the energy crisis,which has the advantages of high efficiency,sustainability and pollution-free.Ni-based cermets have become the most promising choice for commercial SOFC anode materials,due to their high electronic conductivity,high ionic conductivity and excellent catalytic activity for hydrocarbon fuels.However,when carbon-containing fuels are used for Ni-based anode SOFC,it is easy to deactivate due to carbon deposition,resulting in battery performance degradation.In view of this,the mechanism of Ni-based anode carbon deposition in carbon-containing fuels is firstly analyzed.Then,the causes,processes,types and hazards of Ni-based anodic carbon deposition are clarified and the common characterization methods for carbon deposition are introduced.Secondly,the mechanisms and strategies of Ni-based anodes at home and abroad to improve the coking resistance are summarized.Finally,prospects for the development direction of carbon resistance strategy for Ni-based anodes are proposed.
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