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Peng C, Xue L, Zhao Z, Guo L, Zhang C, Wang A, Mao J, Dou S, Guo Z. Boosted Mg-CO 2 Batteries by Amine-Mediated CO 2 Capture Chemistry and Mg 2+ -Conducting Solid-electrolyte Interphases. Angew Chem Int Ed Engl 2024; 63:e202313264. [PMID: 37985401 DOI: 10.1002/anie.202313264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
Mg-CO2 battery has been considered as an ideal system for energy conversion and CO2 fixation. However, its practical application is significantly limited by the poor reversibility and sluggish kinetics of CO2 cathode and Mg anode. Here, a new amine mediated chemistry strategy is proposed to realize a highly reversible and high-rate Mg-CO2 battery in conventional electrolyte. Judiciously combined experimental characterization and theoretical computation unveiled that the introduced amine could simultaneously modify the reactant state of CO2 and Mg2+ to accelerate CO2 cathodic reactions on the thermodynamic-kinetic levels and facilitate the formation of Mg2+ -conductive solid-electrolyte interphase (SEI) to enable highly reversible Mg anode. As a result, the Mg-CO2 battery exhibits boosted stable cyclability (70 cycles, more than 400 h at 200 mA g-1 ) and high-rate capability (from 100 to 2000 mA g-1 with 1.5 V overpotential) even at -15 °C. This work opens a newly promising avenue for advanced metal-CO2 batteries.
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Affiliation(s)
- Chengxin Peng
- School of Materials and chemistry, Institute of Energy Materials Science, University of Shanghai Science and Technology, Shanghai, 200093, China
| | - Linlin Xue
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Zhengfei Zhao
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Longyuan Guo
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Chenyue Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Aoxuan Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Jianfeng Mao
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shixue Dou
- School of Materials and chemistry, Institute of Energy Materials Science, University of Shanghai Science and Technology, Shanghai, 200093, China
| | - Zaiping Guo
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
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