乙醇调控铁腐蚀构筑RuOx/FeOOH电催化剂用于增 强析氢性能

RuOx is a promising electrocatalyst for the hydrogen evolution reaction (HER), but it suffers from competition between *OH and *H adsorption over-binding effect of H on surface. FeOOH features strong oxophilicity, making expectedly form RuOx/FeOOH composite to efficiently catalyze HER. Considering oxidability Ru3+, desirable design moderate environment with homogeneous structure accessible Ru sites. Herein, an ethanol-regulated corrosion strategy was developed in-situ grow iron foam. To avoid violent redox reaction, coordination hydroxyl groups in ethanol Ru3+ reduces postpones diffusion ions. The prepared catalyst exhibited low over-potential 67 mV at 50 mA cm−2 excellent water-splitting properties requiring 1.56 V 100 due optimized electron interaction FeOOH. According modulation mechanism groups, ethylene glycol, n-propanol, isopropanol, methanol are substitutable boost HER activity RuOx/FeOOH. This work proposes coordination-regulation approach preparing Ru-based catalysts enhanced performance by adjusting behaviors.