Synergistic Atomic Environment Optimization of Nickel–Iron Dual Sites by Co Doping and Cr Vacancy for Electrocatalytic Oxygen Evolution - Hua-Jie Niu; Nian Ran; Wei Zhou; Weixuan An; Chuanxue Huang; Wenxing Chen; Min Zhou; Wen-Feng Lin; Jianjun Liu; Lin Guo (Journal of the American Chemical Society, 2025)