Multi-metallic electrocatalysts as emerging class of materials: opportunities and challenges in the synthesis, characterization, and applications. - Israr, Muhammad; Humayun, Muhammad; Suliman, Munzir H.; Abdinejad, Maryam; Rasheed, Tahir; Helal, Aasif; Khan, Iltaf; Bououdina, Mohamed; Wang, Chundong; Usman, Muhammad (Catalysis Reviews: Science & Engineering, 2025)