Composite non-noble system with bridging oxygen for catalyzing Tafel-type alkaline hydrogen evolution.

ABSTRACT: Using hydrogen as a fuel is an effective way to combat energy crisis and at the same time reduce greenhouse gas emission. Alkaline hydrogen evolution reaction (HER) is one important way to obtain green hydrogen, which however is energy intensive and is difficult to obtain high efficiencies even when using state-of-the-art noble metal catalysts. Here, we report a three-component catalytic system using only non-noble elements, consisting of cobalt oxide clusters and single molybdenum atoms supported on oxyanion-terminated two-dimensional MXene, which enabled the unusual generation of hydrogen by a kinetically fast Volmer-Tafel process in an alkaline electrolyte. The key feature of this catalyst is that the three components are connected by bridging oxygen, which serves to immediately adsorb

SUBMITTER: Chen Z 

PROVIDER: S-EPMC9910610 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature