Electroless deposition synthesis of composite catalysts Ni-Fe-P-WO3/NF with superior oxygen evolution performance |
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Affiliation: | College of Materials Science and Engineering, Qingdao University of Science and Technology No.53 Zhengzhou Road, Qingdao, 266042, China |
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Abstract: | The proper construction of high efficiency, low-cost, earth-abundant oxygen evolution reaction (OER) catalyst is essential for hydrogen formation by water splitting. A novel electrocatalyst with highly active OER performance was manufactured by a simple electroless deposition method of Ni-Fe-P-WO3 on nickel foam (NF). Benefiting from outstanding mass transfer capability of Ni-Fe-P-WO3/NF heterogeneous structure, abundance of active sites in the amorphous architecture and etc., the Ni-Fe-P-WO3/NF shows extremely superb electrocatalytic properties compare to noble metal catalyst IrO2/NF for OER, which needs an overpotential of only 218 mV in 1.0 M KOH solution to achieve the current density of 10 mA cm?2. It also has remarkable OER activity at high current density that only needs 298 mV to attain 100 mA cm?2 current density. Moreover, the Ni-Fe-P-WO3/NF has low Tafel slope of 42 mV dec?1. This study offers a novel approach to the production of OER multiphase electrocatalysts from oxides and alloys. |
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Keywords: | Ni–Fe–P alloy Oxygen evolution reaction Electroless deposition Electrocatalyst |
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