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Article Abstract
Lithium carbon dioxide (Li-CO) batteries have recently attracted extensive attention since they offer a great approach to simultaneously realize CO capture and conversion. However, the sluggish kinetics and complex reaction mechanism at the cathodic side significantly hinder the improvement in the performance of Li-CO batteries. Therefore, highly-efficient electrocatalysts are required to solve the problems encountered in Li-CO batteries. Copper (Cu)-based nanomaterials, particularly those containing unique heterointerfaces, have been regarded as outstanding electrocatalysts for the aqueous CO reduction reaction but have scarcely been applied in Li-CO battery systems thus far. Thus, to explore advanced electrocatalysts for CO-related reactions in Li-CO batteries, herein, we primarily discuss the recent progress in Cu-based heterostructures and thoughtfully assess their potential electrocatalytic functionality towards Li-CO batteries. The structure and charge-discharge mechanism of Li-CO battery is first introduced and analyzed. Then, Cu-based heterostructures categorized by fascinating approaches are systematically reviewed and discussed. Subsequently, the currently reported Cu-based electrocatalysts for Li-CO batteries are summarized. Finally, the future challenges and development directions of Cu-based heterojunction electrocatalysts for Li-CO batteries are prospected.
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