Promises of engineering Rh-based nanostructures for advanced electrocatalysis

Noble metal Rh has been emerged as a potential candidate for energy-related electrocatalytic reactions due to its appropriate adsorption strength with key intermediates and strong resistance in harsh reaction conditions. Although Rh possesses a series of exceptional physiochemical properties, its electrocatalytic performance still can't meet the high requirements for industrial application. To this end, enormous efforts have been devoted to enabling the electrocatalytic performance of Rh to approach to the industrial standard. In this review, we discuss the latest research advances of Rh-based nanostructures for electrocatalytic energy conversion. We first provide an overview of the factors governing the electrocatalytic performance of Rh and Rh-based electrocatalysts, followed by highlighting four efficient strategies to significantly improve the electrocatalytic performance of Rh-based nanostructures, including atomic size design, composition optimization, morphology design, and surface/interface engineering. Finally, the challenges and future perspectives of Rh-based nanocatalysts are also presented to provide valuable insights for promoting the electrocatalytic performance for Rh-based electrocatalysts toward energy-conversion-related electrocatalytic reactions.