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Nickel-Iron Phosphide Composite Material Based on Carbon Cloth as an Efficient Electrocatalyst for Oxygen Evolution
Jingru Ren1, Hao Niu1, Chunsheng Sheng1
1Heilongjiang Provincial Key Laboratory of CO2 Resource Utilization and Energy Catalytic Materials, School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, P. R. China.
None:
Advancing sustainable energy conversion technologies requires the rational design of electrocatalysts that simultaneously achieve high efficiency, cost-effectiveness, and operational stability for the oxygen evolution reaction (OER). In this study, the nanoflower structure of nickel-iron phosphide was homogeneously grown on a substrate carbon cloth (NiFeP/CC) through hydrothermal and phosphating treatment. The as-synthesized NiFeP/CC possesses distinctive hierarchical architectures and efficiently augments the electrochemically active surface area. The NiFeP/CC electrocatalyst exhibited a lower overpotential (η) of 186 mV for OER at a current density of 10 mA·cm-2 in 1 M KOH. The excellent performance is attributed to the enhanced synergistic interaction between Ni and Fe. In addition, NiFeP/CC exhibits excellent durability, maintaining current density with almost no attenuation over 24 h in alkaline environments. The product has been tested, verifying its stability and reliability in practical applications.
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