Enhanced ions and electrons transmission enables high-performance KxMnO@C cathode for hybrid supercapacitors
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 16516-16521 |
Journal / Publication | Ceramics International |
Volume | 48 |
Issue number | 12 |
Online published | 11 Mar 2022 |
Publication status | Published - 15 Jun 2022 |
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Abstract
Manganese oxides have been regarded as one of the most promising electrode materials for energy storage systems. Especially, they can be used as battery-type electrodes in hybrid supercapacitors to achieve high energy density and power density at the same time. In such an application, the redox reaction on the battery-type electrodes needs to speed up to match the fast charging-discharging process of the counter capacitive electrodes. Herein, we intercalated K+ ions into MnO2 to enlarge the interlayer space as channels for ion diffusion, and coated the particles with carbon layer to achieve fast charging/discharging ability. The obtained KxMnO@C particles delivered a high specific capacitance of 1039 F g−1 in 5 M LiTFSI aqueous electrolyte. Coupled with activated carbon anode, the hybrid supercapacitor showed outstanding energy and power density.
Research Area(s)
- Carbon coating, Hybrid capacitor, Manganese oxides
Citation Format(s)
Enhanced ions and electrons transmission enables high-performance KxMnO@C cathode for hybrid supercapacitors. / Chen, Lina; Zheng, Xiaowen; Hao, Chongyang et al.
In: Ceramics International, Vol. 48, No. 12, 15.06.2022, p. 16516-16521.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review