Facile Dynamic Synthesis of Homodispersed Ni3S2 Nanosheets as a High-Efficient Bifunctional Electrocatalyst for Water Splitting

It is extremely significant but still challenging to develop effective and stable electrocatalysts for water splitting, which is recommended as a promising technology to produce hydrogen. Herein, leaf-like Ni3S2 nanosheets grown on the nickel foam fabricated by a novel one-step dynamic hydrothermal method is demonstrated. Based on the new method, such catalyst with high and uniform dispersion exhibits superior activity and stability for both hydrogen evolution reaction and oxygen evolution reaction in basic electrolyte. Moreover, the as-prepared Ni3S2 as two electrode catalysts of overall water splitting exhibits remarkable bifunctional activities with a small cell voltage of 1.45 V at a current density of 10 mA cm(-2). This work can provide a new prospect for optimizing Ni3S2 growth to enhance its electrocatalytic performances.