A Self‐Supported Electrode for the Alkaline HER Based on Electrodeposition of Platinum on Metal Fiber Felt

Abstract Electrocatalytic hydrogen evolution is an important topic in the preparation of low‐carbon green hydrogen energy sources. This paper reports an efficient electrocatalytic electrode using platinum on a stainless steel fiber felt (SSF) substrate by the electrodeposition method. The surface of SSF is loaded with electrodeposited Pt nanoparticles, which enhance the electrochemical properties of SSF. The overpotential η10 of the synthesized electrode for hydrogen evolution reaction (HER) in 1 M KOH is just 21 mV, indicating that it has excellent electrocatalytic performance. Long‐time durability tests showed good stability of the synthesized electrode. All these excellent properties indicate that the prepared self‐supported electrodes are promising for a new direction in industrial water electrolysis.