Self-supported CoP nanosheet arrays: a non-precious metal catalyst for efficient hydrogen generation from alkaline NaBH4 solution

Abstract

Hydrogen can be catalytically generated on a large scale by hydrolysis of NaBH₄. In this communication, we describe the development of cobalt phosphide nanosheet arrays on Ti mesh (CoP/Ti mesh) as a robust and highly active monolithic catalyst for the hydrolytic dehydrogenation of NaBH₄ in alkaline solutions. A hydrogen generation rate of 6100 mL_(H2) min⁻¹ g_(CoP)⁻¹ and an activation energy of 42.01 kJ mol⁻¹ were achieved under air-saturated atmospheric conditions, which are superior to those of most reported catalysts, with good durability and reusability.