Semi-Crystalline Ruthenium Catalyst for Zero-Drag Hydrogen Production from Hybrid Alkaline Seawater Electrolysis.

ABSTRACT: Hydrazine-assisted hybrid alkaline seawater electrolysis offers a dual-functional platform for environmentally benign remediation of toxic hydrazine and energy-autonomous hydrogen generation. Addressing the critical need for simplified system integration, a single-metal bifunctional catalyst is developed by modulating electronic metal-support interactions (EMSI) to construct semi-crystalline Ru domains with metastable crystalline-amorphous interfaces. The optimized catalyst achieves ultralow overpotentials of 21.5 mV (hydrogen evolution) and 254 mV (hydrazine oxidation) at 10 mA cm⁻², alongside spontaneous hydrazine decomposition at open-circuit potential. This synergy enables near-zero energy input for electrolysis, evidenced by a steep polarization slope (1.235 A cm⁻²

SUBMITTER: Yang D 

PROVIDER: S-EPMC12462945 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature