Fe‐Doped CoP Nanoarray: A Monolithic Multifunctional Catalyst for Highly Efficient Hydrogen Generation

An Fe-doped CoP nanoarray behaves as a robust 3D monolithic multifunctional catalyst for electrolytic and hydrolytic hydrogen evolution with high activity. Its two-electrode electrolyzer needs a cell voltage of only 1.60 V for 10 mA cm⁻² water-splitting current. It also catalyzes effectively NaBH₄ hydrolysis with a low activation energy of ≈39.6 kJ mol⁻¹ and a hydrogen generation rate of 6.06 L min⁻¹ g⁻¹ .