Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC01644H, Communication Cheng Huang, Jing Ni, Huan Liu, Mingyang Chu, Yao Zhang, Xiaohan Sun, Wenhui Fang, Changpeng Liu, Meiling Xiao, Wei Xing We report a low-temperature quenching strategy to modulate surface oxygen vacancies on RuO2 for acidic water oxidation. Benefiting from the introduction of oxygen vacancies, the Ru-O covalency is weakened and...