Lattice-constant engineering of RuO2 via Gd incorporation for for active and stable water splitting

Key Points

• The aim is to enhance RuO2's catalytic activity and stability for water splitting by incorporating Gd to modify its lattice structure.
• Lattice constants of RuO2 were tuned through Gd doping.
• Performance of Gd doped RuO2 catalysts was evaluated in PEMWE (Proton Exchange Membrane Water Electrolysis).
• Measurements were made to assess overpotential and durability of the catalysts.
• Gd0.08Ru0.92O2 exhibited significantly lower overpotential compared to non-doped RuO2.
• The catalyst demonstrated excellent durability over extended use, indicating high stability during water splitting.
• Optimization of Ru-O covalency contributed to improved catalytic performance.