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Mn Cluster-Embedded N/F Co-Doped Carbon toward Mild Aqueous Supercapacitors.
- Source :
- Materials (1996-1944); Mar2024, Vol. 17 Issue 6, p1417, 13p
- Publication Year :
- 2024
-
Abstract
- Aqueous supercapacitors have occupied a significant position among various types of stationary energy storage equipment, while their widespread application is hindered by the relatively low energy density. Herein, N/F co-doped carbon materials activated by manganese clusters (NCM) are constructed by the straightforward experimental routine. Benefiting from the elevated conductivity structure at the microscopic level, the optimized NCM-0.5 electrodes exhibited a remarkable specific capacitance of 653 F g<superscript>−1</superscript> at 0.4 A g<superscript>−1</superscript> and exceptional cycling stability (97.39% capacity retention even after 40,000 cycles at the scanning rate of 100 mV s<superscript>−1</superscript>) in a neutral 5 M LiCl electrolyte. Moreover, we assembled an asymmetric device pairing with a VO<subscript>x</subscript> anode (NCM-0.5//VO<subscript>x</subscript>), which delivered a durable life span of 95% capacity retention over 30,000 cycles and an impressive energy density of 77.9 Wh kg<superscript>−1</superscript>. This study provides inspiration for transition metal element doping engineering in high-energy storage equipment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 17
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Materials (1996-1944)
- Publication Type :
- Academic Journal
- Accession number :
- 176367288
- Full Text :
- https://doi.org/10.3390/ma17061417