Due to the fact that proton exchange membrane electrolysis parts often operate under the conditions of strong acid and high current density,the catalytic materials of anode excessively depend on the precious metal iridium(Ir),which is in short supply,so it is necessary to develop efficient and stable catalysts with low Ir content.Porous antimony-doped tin dioxide(ATO)nanofiber is prepared via electrospinning technology,and then loaded with iridium oxide nanoparticles through hydrothermal method.The composites are characterized by means of various methods to determine their morphologies and electronic structures,as well as their electrochemical property.Results show that the optimized composite exhibits excellent electrocatalytic water oxidation activity,with an overpotential of 276 mV at 10 mA·cm-2,and exhibits good electrochemical stability,which is expected to be used as anode materials for proton exchange membrane electrolysis of water.
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