AApplied Catalysis B: Environmental3/23/2026Gradient tuning the covalency of Ru-O bonds by 4f-electron to unlock dual-site oxide path mechanism for acid-stable water oxidationJiaqi Wan·Yu Tong Liu·Wei Jiang·Jiabao Huang·Yi Xin·Chengsi Hu·Chongjing Liu·Rongyao Li·Guanxiong Wang·Luocai Yi·S.C. Chen·Li Song·Qingjun Chen·Fangren QianRead at Applied Catalysis B: EnvironmentalTagsElectrocatalysts for Energy ConversionRenewable Energy, Sustainability and the Environment