Enhancing Hydrogen Evolution by Optimizing the Hydrogen Adsorption on Titanium Monoxide Nanodot‐Decorated Cobalt Sulfide Nanosheets

• DOI: 10.1002/cphc.202100697
• Publication Date: 2021-12-09T08:53:43Z
• Authors: Binyu Zhang; Yang Zhou; Yang Cao; Xiaohong Wang; Kexi Zhang; Jinchun Tu; Lei Ding
• Keywords: Overpotential; Nanodot; Nanoclusters; Cobalt sulfide

Abstract Modulating the local electronic state of metal compounds through interfacial interaction has become a key method for manufacturing high‐performance hydrogen evolution reaction (HER) electrocatalysts. The electron‐rich active sites can promote adsorption hydrogen, which accelerates Volmer step and thereby enhances electrocatalytic performance HER. Here, we found that strong between TiO nanodots (TiO/Co−S) Co−S nanosheets could advantageously improve toward HER electrocatalyst. Meanwhile, XPS results showed modulating structure produces regions on Co. As result, overpotential TiO/Co−S nanocomposite at 10 mA cm −2 was 107 mV, Tafel slope 83.3 mV dec −1 . This study focused effect solid‐solid interface catalytic successfully improved activity transition materials in catalysis.