Recent Advances in Electrodeposited Iridium and Ruthenium‐Based Electrocatalysts for Acidic Water Electrolysis

ABSTRACT The development of highly efficient and stable electrocatalysts with low precious metal loading for the acidic oxygen evolution reaction remains challenging in the hydrogen economy, particularly for iridium (Ir) and ruthenium (Ru)‐based catalysts. As a credible technology for the synthesis of functional materials, electrodeposition has attracted widespread attention, particularly due to its convenient and controllable characteristics. Recently, lots of researchers have been devoted to this hot research direction with plentiful achievements, nevertheless, a comprehensive review of this area is still missing. Hence, we summarize the latest advances in the synthesis of Ir and Ru‐based electrocatalysts through electrodeposition techniques discussing deposition mechanisms, the influence of deposition parameters on catalysts and common strategies for catalyst optimization. Furthermore, we conclude with the prospects and future challenges in electrodeposition for preparing highly efficient catalysts, providing new guidance for the design and synthesis of hydrogen production catalysts.