Electrocatalytic oxygen evolution performance of metal molybdate grown on nickel foam
Developing efficient electrocatalysts is of great significance but a huge challenge in the field of electrocatalytic oxygen evolution.Molybdate salts have strong electronic interactions and good conductivity,which are considered innovative electrocatalysts to enhance the electrocatalytic oxygen evolution performance.In addition,the synergistic effect of Mo and metal ion Fe in metal molybdates can further improve the electrochemical reaction activity of materials.Three molybdates,nickel molybdate,iron molybdate and cobalt molybdate,were grown on foam nickel substrate by solvothermal method,and Fe2(MoO4)3-NF nano-prism catalyst was successfully constructed.The results indicated that the Fe2(MoO4)3-NF nano-prism catalyst only required an overpotential of 182 mV at a current density of 10 mA/cm2.with a Tafel slope of just 34.8 mV/dec,which is superior to the precious metal catalyst RuO2,and also demonstrated excellent chronoamperometric stability.Therefore,the Fe2(MoO4)3-NF nano-prism catalyst holds immense potential due to its outstanding catalytic activity and exceptional stability.
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