Reconstructed Monolithic RuNi Heterostructure Enables Hydrogen Production from Alkaline Seawater at Industrial Current Density.

ABSTRACT: Industrial-scale hydrogen production requires electrocatalysts capable of simultaneously delivering high activity, long-term durability, and seawater compatibility. In this work, a monolithic RuNiO_x catalyst directly grown on Ni foam is reported, which evolves into the Ru/NiO heterostructure during operation. The reconstructed electrocatalyst presents excellent catalytic performance with a mass activity of 0.47 A mg^-1 _Ru at an overpotential of 50 mV, twice that of the benchmarked Pt/C (0.21 A mg^-1 _Pt) and remarkable durability of over 350 h at 1 A cm^-2 without noticeable degradation. Even in harsh alkaline seawater, the electrode maintains stable operation for 100 h at both 100 and 500 mA cm^-2, and functions relia

SUBMITTER: Luo H 

PROVIDER: S-EPMC12752561 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature