“…The Co‐based transition metal oxides indeed contribute to the achievement of superior performance in such aspects as higher discharge capacity, lower overpotential, longer cycle lifespan, better reversibility, faster kinetics, and so on. Li‐O 2 batteries have a long way to go, however, and each constituent of Li‐O 2 battery packs, including Li metal anode, electrolyte, cathode (i.e., solid catalyst), and additives (i.e., redox mediators), needs attention and more in‐depth study, which has been reviewed recently 119–122 . For catalysts, ORR and OER should be revisited in Li‐O 2 batteries rather than simply transferring knowledge gained from water splitting 123 …”