In Situ Growth of Self-Supporting MOFs-Derived Ni2P on Hierarchical Doped Carbon for Efficient Overall Water Splitting

• DOI: 10.3390/catal12111319
• Publication Date: 2022-10-28T00:37:58Z
• Authors: Neng Chen; Sai Che; Hongchen Liu; Na Ta; Guohua Li; Fengjiang Chen; Guang Ma; Fan Yang; Yongfeng Li
• Keywords: Oxygen evolution; Carbon fibers

The in situ growth of metal organic framework (MOF) derivatives on the surface nickel foam is a novel type promising self-supporting electrode catalyst. In this paper, work reports for first time strategy Ni-MOF, where source purely provided by (NF) substrate without any external ions. MOF-derived Ni2P/NPC structure achieved subsequent phosphidation to yield Ni2P porous N, P-doped carbon (NPC) backbone. Such provides as-synthesized Ni2P/NPC/NF electrocatalyst an extremely low interfacial steric resistance. Moreover, unique three-dimensional hierarchical Ni2P/NPC/NF, providing massive active sites, short ion diffusion path, and high electrical conductivity. Directly applied as electrode, demonstrates excellent electrocatalytic performance towards both hydrogen evolution reaction (HER) oxygen (OER), with overpotentials only 58 mV 208 drive 10 mA cm−2, respectively, 1 M KOH. Furthermore, acting overall water splitting electrodes can generate current density cm−2 at ultralow cell voltage 1.53 V. This simple paves way construction transition metal-based electrocatalysts.