Modulation of RuO₂ Nanocrystals with Facile Annealing Method for Enhancing the Electrocatalytic Activity on Overall Water Splitting in Acid Solution.

ABSTRACT: RuO₂-based materials are considered an important kind of electrocatalysts on oxygen evolution reaction and water electrolysis, but the reported discrepancies of activities exist among RuO₂ electrocatalysts prepared via different processes. Herein, a highly efficient RuO₂ catalysts via a facile hydrolysis-annealing approach is reported for water electrolysis. The RuO₂ catalyst dealt with at 200 °C (RuO₂-200) performs the highest activities on both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in acid with overpotentials of 200 mV for OER and 66 mV for HER to reach a current density of 100 mA cm^-2 as well as stable operation for100 h. The high-resolution transmission electron microscopy (HRTEM) and X-ra

SUBMITTER: Song K 

PROVIDER: S-EPMC11884526 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature