(288f) Aldehydes Oxidation-Assisted H2 Production at High Current Densities Promoted By a Cooperative Catalyst

Designing highly active electrocatalysts for industry-scale hydrogen production at ampere-level current densities under low overpotentials is still a crucial challenge. Meanwhile, high cost and complex process of technology hinder the large-scale application. Given this, two ways, the decrease of feedstock cost and the production of high value-added byproducts, are potential and practical. Herein, an unique multicomponent nanorods electrocatalyst consisting of minute amount of precious metals and binary alloy nanoparticles anchored on an inorganic metal matrix (Ru-NiMo/NF) for efficient hydrogen evolution reaction (HER) is reported, which delivers a current density of 1000 mA cm^−2 at ultralow overpotentials of 162 and 179 mV with iR compensation in the alkaline and simulated seawater electrolyte, respectively. Besides, it exhibits a low potential of 1.718 V at 200 mA cm^−2 for the electrooxidation of 5-hydroxymethylfurfural (HMF), and an optimal 2,5-Furandicarboxylic acid (FDCA) selectivity of over 90%, which significantly improves the efficiency of hydrogen production. This study provides a promising avenue for the safe, efficient and scalable production of high-purity hydrogen.