Modification strategies on nickel-based electrocatalysts for energy-efficient anodic reactions

Electrocatalytic chemical oxidation (ECO) is an energy-efficient anodic reaction alternative to the oxygen evolution reaction (OER). ECO lowers the reaction potential and yields higher-value fine chemicals at the anode. The catalyst material plays a crucial role in influencing and determining ECO performance. Enhancing catalyst performance encompasses aspects such as activity, stability, selectivity and cost. Nickel-based electrocatalysts have garnered significant attention for their exceptional performance and widespread use in ECO applications. By modifying nickel-based electrocatalysts, the formation of NiOOH active centers can be encouraged. Strategies such as adjusting size and morphology, doping, introducing defects and constructing heterojunctions are advantageous for enhancing performance. Given the rapid advancements in related research fields, it is imperative to comprehend the mechanisms of nickel-based electrocatalysts in ECO and develop innovative catalysts. This article provides an overview of the modification strategies of nickel-based electrocatalysts, as well as their applications and mechanisms in ECO.