Tailoring the components and morphology of discharge products towards highly rechargeable Li–CO/CO2 batteries

Abstract

A new non-aqueous Li–CO/CO₂ battery with the main discharge products being Li₂CO₃ and carbon is introduced for the first time. Our findings demonstrate that with the addition of CO, the components and morphology of the discharge products are skillfully tailored, becoming more uniform, with poorer crystallinity and better conductivity. Thanks to these features, the utilization of a cathode in the Li–CO/CO₂ battery system is increased and the discharge products are more easily decomposed. These positive effects caused by CO endow the Li–CO/CO₂ battery with enhanced electrochemical performances.