Potential‐Cycling Synthesis of Single Platinum Atoms for Efficient Hydrogen Evolution in Neutral Media

• DOI: 10.1002/anie.201706921
• Publication Date: 2017-08-08T18:16:41Z
• Authors: Lihan Zhang; Lili Han; Haoxuan Liu; Xijun Liu; Jun Luo
• Keywords: 01 natural sciences; 7. Clean energy; Communications; 0104 chemical sciences

Abstract Single‐atom catalysts (SACs) have exhibited high activities for the hydrogen evolution reaction (HER) electrocatalysis in acidic or alkaline media, when they are used with binders on cathodes. However, to date, no SACs been reported HER neutral media. We demonstrate a potential‐cycling method synthesize catalyst comprising single Pt atoms CoP‐based nanotube arrays supported by Ni foam, termed PtSA‐NT‐NF. This binder‐free is centimeter‐scale and scalable. It directly as cathodes, whose performances at low current densities phosphate buffer solutions (pH 7.2) comparable better than, respectively, those of commercial Pt/C. The mass activity PtSA‐NT‐NF 4 times that Pt/C, its electrocatalytic stability also than work provides large‐scale production strategy SAC electrodes efficient