Abstract
AbstractAprotic lithium‐oxygen (Li‐O2) batteries represent a promising next‐generation energy storage system due to their extremely high theoretical specific capacity compared with all known batteries. Their practical realization is impeded, however, by the sluggish kinetics for the most part, resulting in high overpotential and poor cycling performance. Due to the high catalytic activity and favorable stability of Co‐based transition metal oxides, they are regarded as the most likely candidate catalysts, facilitating researchers to solve the sluggish kinetics issue. Herein, this review first presents recent advanced design strategies for Co‐based transition metal oxides in Li‐O2 batteries. Then, the fundamental insights related to the catalytic processes of Co‐based transition metal oxides in traditional and novel Li‐O2 electrochemistry systems are summarized. Finally, we conclude with the current limitations and future development directions of Co‐based transition metal oxides, which will contribute to the rational design of catalysts and the practical applications of Li‐O2 batteries. image
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