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ArticleTailoring the Discharge Reaction in Li-CO2 Batteries through Incorporation of CO2 Capture Chemistry
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The negative environmental impact of rising CO2 emissions has underscored the need for innovative approaches toward CO2 management, which are crucial not only for developing mitigation technologies to address sustainability challenges, but also for enhancing our scientific understanding of CO2 reactivity in different environments. This work presents the design and study of a novel chemistry for post-combustion CO2 capture and conversion. We show that adding a CO2 capture agent such as an alkyl amine into an organic, Li+-containing electrolyte yields a new redox-active species that can be directly reduced at a catalyst-free carbon electrode in a Li-CO2 battery with high discharge voltage and capacity. The central advance reported herein is the first-time coupling of CO2 capture chemistry to nonaqueous electrochemistry, which opens up new avenues for realizing electrochemical CO2 transformations with high selectivity.
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