Inter‐Doping ZrO 2 ‐5.5RuO 2 Heterostructures for Enhanced Efficiency and Stability in Acidic Oxygen Evolution
Abstract
ABSTRACT Acid water electrolysis represents a crucial technology for the sustainable production of hydrogen. However, acidic media and high oxidation potential can lead to oxidative dissolution of catalysts (e.g., RuO 2 → soluble RuO 4 ), resulting in a rapid loss of active sites. Here, we present an inter‐doping strategy for the construction of zirconium‐ruthenium oxide heterostructure (ZrO 2 ‐xRuO 2 ) through metal–organic framework confined effect and fused salt mixing method. Specifically, ZrO 2 ‐5.5RuO 2 achieves an ultralow overpotential of 137 mV at 10 mA cm −2 , setting a new benchmark for oxygen evolution catalysts under acidic conditions. Its mass activity (337.5 A g Ru −1 ) at 250 mV overpotential is 32.3 times that of commercial RuO 2 . The catalyst also demonstrates long‐term stability for 655 h, far superior to commercial RuO 2 (
Fields of Study & Subjects
Electrocatalysts for Energy Conversion
Advancements in Solid Oxide Fuel Cells
CO2 Reduction Techniques and Catalysts
Publication details
- Journal / source
- Advanced Materials
- Publisher
- Wiley
- Volume
- 38
- Issue
- 12
- Pages
- e22946–e22946
- Publication date
- 15 January 2026
- Language
- EN