Metal-organic frameworks derived self-supported Ni2P nanorod arrays for electrocatalytic hydrogen evolution. (29th March 2023) - Qin, Biao
Abstract: The development of efficient and low-cost electrocatalysts for hydrogen evolution reaction (HER) is of importance. Herein, we demonstrate a self-supported Ni2 P nanostructure with nanorod arrays morphology, fabricated by directly growing metal-organic frameworks (MOFs) on the commercial nickel foam prior to phosphorization treatment, as an electrocatalyst for HER. This electrocatalyst exhibits remarkable electrocatalytic HER activity in an alkaline electrolyte, affording current densities of 10 and 100 mA cm −2 at the overpotentials of 120 and 168 mV, respectively, accompanied with a low Tafel slope of 37 mV dec −1 . Furthermore, this electrocatalyst shows a current density of 105 mA cm −2, and this current density can be retained for more than 20 h, suggesting its superior stability. This remarkable HER performance is believed a result of superiority for its structural integrality and mechanical stability. Highlights: MOFs-derived Ni2 P nanorod arrays are facilely constructed. Ni2 P NA/NF exhibits superior electrocatalytic activity towards HER with remarkable catalytic stability. The remarkable HER performance is believed a result of superiority for its structural integrality and mechanical stability.