Metal−Organic Precursors for Transition‐Metal‐Doped Ni₂P via Pyrolysis for Efficient Overall Water Splitting and Supercapacitance

The synthesis of solvent-less bare-surface nickel phosphides is desired, considering their superior electrocatalytic properties and straightforward synthetic protocols compared to analogues prepared from colloidal routes. Herein, we report the [Ni{S2P(OH)(4-CH3OC6H4)}2] (1), [Fe{S2P(OH)(4-CH3OC6H4)}3] (2) [Co{S2P(OC4H9)(4-CH3OC6H4)}3] (3) utilization form Ni2P, Fe-Ni2P Co-Ni2P in a pyrolysis method. This solvent-free protocol involved decomposition complex (1) composites with or presence triphenylphosphine (TPP) at 400 °C for one hour. without TPP formed sulfide. A plausible explanation this rare fabrication pristine doped Ni2P absence any solvent suggested. All transition metal improved HER performance 5% Fe having best performance, requiring 137 mV reach current density 10 mA/cm2. Similarly, OER un-doped was by all catalysts, where 10% Fe-doped showed 326 Transition doping also shown improve reaction kinetics, stability durability Ni2P.