Dual-Modification Engineering of CoNi Alloy Realizing Robust Performance for Electrocatalytic Hydrogen Production

Anion modification and trace metal doping have been widely demonstrated to unique advantages in regulating both electrocatalytic activity the electronic structure of non-precious materials. Developing a simple practical preparation strategy is critical, but it still faces challenges. In this paper, novel type dual-modification approach put forward rationally design S, Pt-CoNi material, which can be grown directly on nickel foam (NF) one-step electrodeposition process. The multiple having plenty active sites, high conductivity, faster charge transfer endow optimized reaction kinetic for HER. prepared Pt-CoNi/NF catalyst displays excellent catalytic performance, low overpotential 116 mV at 50 mA cm−2 small Tafel slope 75 dec−1 are achieved. coupled Pt-CoNi/NF||FeOOH/NF electrolyzer delivers current density 100 potential 1.61 V as well superior stability under alkaline conditions. Our work experimentally confirms feasibility constructing dual-regulation via electrodeposition, also provides ideas controllable other high-performance electrodes electrocatalysis.