A Physically Grounded Descriptor Decoupling Intrinsic and External Contributions to CO 2 Electroreduction over Single-Atom Catalysts - Yuxiao Meng; Yu Cui; Linfeng Fan; Chunjin Ren; Haona Zhang; Xiuyun Zhang; Qiang Li; Chongyi Ling; Jinlan Wang (Journal of the American Chemical Society, 2026)