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In Situ Formation of Nitrogen‐Rich Solid Electrolyte Interphase and Simultaneous Regulating Solvation Structures for Advanced Zn Metal Batteries.
- Source :
-
Angewandte Chemie International Edition . 12/23/2022, Vol. 61 Issue 52, p1-11. 11p. - Publication Year :
- 2022
-
Abstract
- Zn metal as one of promising anode materials for aqueous batteries suffers from notorious dendrite growth, serious Zn corrosion and hydrogen evolution. Here, a bifunctional electrolyte additive, N‐methyl pyrrolidone (NMP), is developed to improve the electrochemical performance of Zn anode. NMP not only alters the solvation structure of Zn2+, but also in situ produces a dense N‐rich solid‐electrolyte‐interphase layer on Zn foils. This layer protects Zn foils from corrosive electrolytes and benefits the uniform plating/stripping of Zn. Hence, the asymmetrical cells with NMP in the electrolyte retain a high coulombic efficiency of 99.8 % over 1000 cycles. The symmetric cells survive ≈200 h for 10 mAh cm−2 at a high Zn utilization of 85.6 %. The full cells of Zn||MnO2 show an impressive cumulative capacity even with lean electrolyte (E/C ratio=10 μL mAh−1), limited Zn supply (N/P ratio=2.3) and high areal capacity (5.0 mAh cm−2). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 61
- Issue :
- 52
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 160783688
- Full Text :
- https://doi.org/10.1002/anie.202212839