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Facile Synthesis of $CoSe/Co_{3}O_{4}$-CNTs/NF Composite Electrode for High-Performance Asymmetric Supercapacitor
| Content Provider | MDPI |
|---|---|
| Author | Wang, Ying Zheng, Xiang Cao, Xianjun Yang, Chengtao Zhao, Qiang Zhang, Yongqi Xia, Xinhui |
| Copyright Year | 2022 |
| Description | Electrode materials are key factors for supercapacitors to endow them with excellent electrochemical properties. Here, a novel hybrid structure of a $CoSe/Co_{3}O_{4}$-CNTs binder free composite electrode on nickel foam was prepared via a facile flame method, followed by an electrodeposition process. Benefitting from the synergetic effects of the multicomponent (with low resistances of 1.542 Ω $cm^{2}$ and a moderate mesoporous size of 3.12 nm) and the enlarged specific surface area of the composite material (77.4 $m^{2}$ $g^{−1}$), the $CoSe/Co_{3}O_{4}$-CNTs composite electrode delivers a high specific capacitance of 2906 F $g^{−1}$ at 5 mV $s^{−1}$ with an excellent rate stability. The fabricated CoSe/Co3O4-CNTs/NF//AC ASC exhibits a high energy density of 43.4 Wh $kg^{−1}$ at 0.8 kW $kg^{−1}$ and a long cycle life (92.7% capacitance retention after 10,000 cycles). |
| Starting Page | 5841 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma15175841 |
| Journal | Materials |
| Issue Number | 17 |
| Volume Number | 15 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-24 |
| Access Restriction | Open |
| Subject Keyword | Materials Analytical Chemistry Electrochemistry Cose/co3o4-cnts Composite Electrode Flame Method Ultra-high Specific Capacitance Long Cycle Life Asymmetric Supercapacitor |
| Content Type | Text |
| Resource Type | Article |
