Asymmetric supercapacitors with high energy density and high specific capacitance based on Ni-Co-Mn multiphase metal structure MOF
| Autor: | Senyang Song, Boyuan Zhang, Xiaoyan Ma, Lewen Zheng, Wenyue Li |
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| Rok vydání: | 2021 |
| Předmět: |
Supercapacitor
Materials science Nanostructure General Chemical Engineering General Engineering General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Capacitance Hydrothermal circulation Energy storage 0104 chemical sciences Chemical engineering General Materials Science Metal-organic framework 0210 nano-technology Power density |
| Zdroj: | Ionics. |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-021-04056-3 |
| Popis: | Design and construction of multiphase nanostructures of metal organic frameworks (MOF) has recently been considered an effective method for the preparation of synergistic and excellent performance supercapacitor materials. Herein, Ni-Co-Mn-based metal organic frameworks (Ni-Co-Mn MOF) are prepared through an effortless one-step hydrothermal method, in which multiple metal nodes were evenly distributed between MOF nanostructure through ligands and formed a multiphase nanostructure through synergy. The synthesized Ni-Co-Mn0.25 MOF exhibits a prominent specific capacitance of 1575 F g−1 at 1 A g−1, remarkable rate capability and cycling stability. Moreover, we constructed an asymmetrical supercapacitor, which performed an excellent energy density of 73.56 Wh kg−1 at a power density of 399 W kg−1 and great cycling stability with 81.64% of original capacitance after 5000 cycles. Ni-Co-Mn MOF is a promising hybrid electrode material for excellent performance supercapacitor as well as it provides a simple and economic way to fabricate supercapacitor composite materials. |
| Databáze: | OpenAIRE |
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