Dimension Engineering in Noble‐Metal‐Based Electrocatalysts for Water Splitting

Abstract Dimension engineering plays a critical role in determining the electrocatalytic performance of catalysts towards water electrolysis since it is highly sensitive to the surface and interface properties. Bearing these considerations into mind, intensive efforts have been devoted to the rational dimension design and engineering, and many advanced nanocatalysts with multidimensions have been successfully fabricated. Aiming to provide more guidance for the fabrication of highly efficient noble‐metal‐based electrocatalysts, this review has focused on the recent progress in dimension engineering of noble‐metal‐based electrocatalysts towards water splitting, including the advanced engineering strategies, the application of noble‐metal‐based electrocatalysts with distinctive geometric structure from 0D to 1D, 2D, 3D, and multidimensions. In addition, the perspective insights and challenges of the dimension engineering in the noble‐metal‐based electrocatalysts is also systematically discussed.