O2 plasma and cation tuned nickel phosphide nanosheets for highly efficient overall water splitting

Oxygen plasma treated vanadium-doped Ni2P nanosheets exhibit highly efficient electrocatalytic toward oxygen evolution and hydrogen evolution reactions with a low overpotentials of 257 and 108 mV at ±10 mA cm−2 alongside with small Tafel slopes of 43.5 and 72.3 mV dec−1, respectively.543