Wang, Caiyun, Huang, Yao, Lu, Yunhao, Pan, Hongge, Xu, Bin, Sun, Wenping, Yan, Mi and Jiang, Yinzhu (2021) Reversible Magnesium Metal Anode Enabled by Cooperative Solvation/Surface Engineering in Carbonate Electrolytes. Nano-Micro Letters, 13 (1). p. 195. ISSN 2311-6706
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Abstract
Magnesium metal anode holds great potentials toward future high energy and safe rechargeable magnesium battery technology due to its divalent redox and dendrite-free nature. Electrolytes based on Lewis acid chemistry enable the reversible Mg plating/stripping, while they fail to match most cathode materials toward high-voltage magnesium batteries. Herein, reversible Mg plating/stripping is achieved in conventional carbonate electrolytes enabled by the cooperative solvation/surface engineering. Strongly electronegative Cl from the MgCl2 additive of electrolyte impairs the Mg…O = C interaction to reduce the Mg2+ desolvation barrier for accelerated redox kinetics, while the Mg2+-conducting polymer coating on the Mg surface ensures the facile Mg2+ migration and the effective isolation of electrolytes. As a result, reversible plating and stripping of Mg is demonstrated with a low overpotential of 0.7 V up to 2000 cycles. Moreover, benefitting from the wide electrochemical window of carbonate electrolytes, high-voltage (> 2.0 V) rechargeable magnesium batteries are achieved through assembling the electrode couple of Mg metal anode and Prussian blue-based cathodes. The present work provides a cooperative engineering strategy to promote the application of magnesium anode in carbonate electrolytes toward high energy rechargeable batteries.
| Item Type: | Article |
|---|---|
| Additional Information: | Funding information: This work was supported by National Key Research and Development Program (2019YFE0111200), the National Natural Science Foundation of China (51722105), Zhejiang Provincial Natural Science Foundation of China (LR18B030001) and the Fundamental Research Funds for the Central Universities and the Fundamental Research Funds for the Central Universities. |
| Uncontrolled Keywords: | Rechargeable magnesium batteries, Metal anode, Solvation effect, Passivation, Carbonate electrolytes |
| Subjects: | H800 Chemical, Process and Energy Engineering H900 Others in Engineering |
| Department: | Faculties > Engineering and Environment > Mechanical and Construction Engineering |
| Depositing User: | Rachel Branson |
| Date Deposited: | 18 Aug 2021 14:14 |
| Last Modified: | 11 Oct 2021 12:45 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/46938 |
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