Source abstract
Abstract
Abstract Metal–CO 2 batteries represent a promising priority for sustainable energy and the environment. However, CO 2 utilization in nonaqueous electrolytes mostly involves difficult CO 2 electrochemistry, leading to poor selectivity and limited cycle performance. Herein, an aqueous rechargeable Zn–CO 2 electrochemical cell that tunably produced CO fuel gas (90% Faradaic efficiency) during cell discharge (cathodic reaction: CO 2 + 2e − + 2H + → CO + H 2 O) and O 2 during cell charge at ≈2 V (cathodic reaction: H 2 O → 1/2O 2 + 2e − + 2H + ), mimicking the separate steps of CO 2 fixation and water oxidation during photosynthesis while exhibiting the advantages of high efficiency, tunable products, and operation independent of sunlight is proposed and realized. The cell achieves a remarkable energy efficiency of 68% with fuel generation, providing an alternative for the green, efficient, and safe utilization of CO 2 by metal–CO 2 batteries.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced battery technologies research · CO2 Reduction Techniques and Catalysts · Electrocatalysts for Energy Conversion
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Affiliations
CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences YangQiao West Road 155# Fuzhou 350002 P. R. China
University of Chinese Academy of Sciences Beijing 100049 P. R. China
Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Fujian Province · Chinese Academy of Sciences
References (27)
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