Infrequent Cubane-Like Chromium Sulfide Cluster with σ-Donor Ligands with Efficient Electrocatalytic Property Toward Hydrogen Evolution Reaction.

The exploitation of efficient and economical electrocatalysts for hydrogen evolution reaction (HER) is of exceeding interest in renewable clean-energy technologies. Herein, the facile solvothermal reaction of S and chromic acetate in ethylenediamine (en) achieved a novel organic hybrid chromium sulfide [Cr(μ-S)(en)(SH)]·0.25HO (), which offers a new type of antiferromagnetic cubane-like chromium sulfide cluster with σ-donor en ligands. was utilized in combination with Ni nanoparticles and porous Ni foam (NF) to fabricate a Ni//NF electrode as an efficient cathodic catalyst, indicating excellent electrocatalytic property toward HER.