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- Title
Mn Cluster-Embedded N/F Co-Doped Carbon toward Mild Aqueous Supercapacitors.
- Authors
Zheng, Chen; Han, Xu; Sun, Fangfang; Zhang, Yue; Huang, Zihang; Ma, Tianyi
- 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−1 at 0.4 A g−1 and exceptional cycling stability (97.39% capacity retention even after 40,000 cycles at the scanning rate of 100 mV s−1) in a neutral 5 M LiCl electrolyte. Moreover, we assembled an asymmetric device pairing with a VOx anode (NCM-0.5//VOx), which delivered a durable life span of 95% capacity retention over 30,000 cycles and an impressive energy density of 77.9 Wh kg−1. This study provides inspiration for transition metal element doping engineering in high-energy storage equipment.
- Subjects
SUPERCAPACITORS; SUPERCAPACITOR electrodes; ENERGY storage equipment; DOPING agents (Chemistry); CARBON-based materials; ENERGY density; TRANSITION metals; MANGANESE; FULLERENES
- Publication
Materials (1996-1944), 2024, Vol 17, Issue 6, p1417
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma17061417