Cobalt disulfide nano-pine-tree array as a platinum alternative electrocatalyst for hydrogen evolution reaction

Abstract

The synthesis of a one-dimensional (1D) array of cobalt disulfide (CoS2) integrated on carbon fiber paper (CFP) was used to prepare an efficient CoS2 electrocatalyst for the hydrogen evolution reaction (HER). The combination of benefits from the unique nano-pine-tree morphology of CoS2 and interwoven carbon network in the CFP offers high electrocatalytic activity and durability, which make this newly nanostructured catalyst suitable as an alternative to platinum (Pt). We also demonstrated the generalization of this synthesis approach to various metal disulfide arrays, which make it of interest in nanoarchitecture.