Abstract
Hydrogen is an emerging alternative green fuel for global decarbonization with a high energy density and zero‐emission. Developing electrocatalysts with strong adhesion, active, and highly efficient that can be operated at high current densities is vital to producing green hydrogen at a large scale via electrocatalytic water splitting (EWS). The sputtering technique is an innovative and prospective alternative to fabricate electrodes for EWS due to its scalability, purity, strong adhesion, chemical‐, solvent‐, and waste‐free catalyst preparation. This review article provides an overview of recent electrocatalyst advances for EWS made by the sputtering technique, emphasizing its distinct advantages over other methods, such as hydrothermal synthesis and drop‐casting. We also provide the recent difficulties associated with the scale‐up issue and outlook to overcome those difficulties, as well as the future direction of the electrocatalysts to meet industrial needs.
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