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http://hdl.handle.net/10397/105993
Title: | A cobalt-based metal-organic framework nanosheet as the electrode for High-performance asymmetric supercapacitor | Authors: | Liu, Q Guo, Z Wang, C Guo, S Xu, Z Hu, C Liu, Y Wang, Y He, J Wong, WY |
Issue Date: | 23-Jun-2023 | Source: | Advanced science, 23 June 2023, v. 10, no. 18, 2207545 | Abstract: | Inspired by the significant advantages of the bottom-up synthesis whose structures and functionalities can be customized by the selection of molecular components, a 2D metal-organic framework (MOF) nanosheet Co-BTB-LB has been synthesized by a liquid–liquid interface-assisted method. The as-prepared Co-BTB-LB is identified by scanning electron microscopy/energy dispersive spectroscopy (SEM/EDX) and X-ray photoelectron spectroscopy (XPS), and the sheet-like structure is verified by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and atomic force microscopy (AFM). Co-BTB-LB electrode exhibits an excellent capacity of 4969.3 F g−1 at 1 A g−1 and good cycling stability with 75% capacity retention after 1000 cycles. The asymmetric supercapacitor device with Co-BTB-LB as the positive electrode shows a maximum energy density of 150.2 Wh kg−1 at a power density of 1619.2 W kg−1 and good cycling stability with a capacitance retention of 97.1% after 10000 cycles. This represents a state-of-the-art performance reported for asymmetric supercapacitor device using electroactive bottom-up metal-complex nanosheet, which will clearly lead to a significant expansion of the applicability of this type of 2D nanomaterials. | Keywords: | 2D material Bottom-up method Electrochemistry MOF nanosheet Supercapacitor |
Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA | Journal: | Advanced science | EISSN: | 2198-3844 | DOI: | 10.1002/advs.202207545 | Rights: | © 2023 The Authors. Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. The following publication Q. Liu, Z. Guo, C. Wang, S. Guo, Z. Xu, C. Hu, Y. Liu, Y. Wang, J. He, W.-Y. Wong, A Cobalt-Based Metal-Organic Framework Nanosheet as the Electrode for High-Performance Asymmetric Supercapacitor. Adv. Sci. 2023, 10(18), 2207545 is available at https://doi.org/10.1002/advs.202207545. |
Appears in Collections: | Journal/Magazine Article |
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