Synthesis of core–shell NaBH4@M (M = Co, Cu, Fe, Ni, Sn) nanoparticles leading to various morphologies and hydrogen storage properties

Abstract

Core–shell nanoparticles of sodium borohydride (NaBH₄) coated with various metals have been successfully synthesised. The morphologies varied from spherical to cubic with a range of particle size distributions depending on the metal used. All core–shell structures show hydrogen storage reversibility with faster kinetics for NaBH₄@Fe and NaBH₄@Ni as compared to NaBH₄@Cu.