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Yang C, Li W, Liu X, Song X, Li H, Tan L. Preparation of MoFs-Derived Cobalt Oxide/Carbon Nanotubes Composites for High-Performance Asymmetric Supercapacitor. Molecules 2023; 28:molecules28073177. [PMID: 37049940 PMCID: PMC10096143 DOI: 10.3390/molecules28073177] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023] Open
Abstract
Metal–organic frameworks (MOFs)-derived metallic oxide compounds exhibit a tunable structure and intriguing activity and have received intensive investigation in recent years. Herein, this work reports metal–organic frameworks (MOFs)-derived cobalt oxide/carbon nanotubes (MWCNTx@Co3O4) composites by calcining the MWCNTx@ZIF-67 precursor in one step. The morphology and structure of the composite were investigated by scanning electron microscope (SEM) and transmission electron microscope (TEM) characterization. The compositions and valence states of the compounds were characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Benefiting from the structurally stable MOFs-derived porous cobalt oxide frameworks and the homogeneous conductive carbon nanotubes, the synthesized MWCNTx@Co3O4 composites display a maximum specific capacitance of 206.89 F·g−1 at 1.0 A·g−1. In addition, the specific capacitance of the MWCNT3@Co3O4//activated carbon (AC) asymmetric capacitor reaches 50 F·g−1, and has an excellent electrochemical performance. These results suggest that the MWCNTx@Co3O4 composites can be a potential candidate for electrochemical energy storage devices.
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Affiliation(s)
- Caiqin Yang
- Institute of Carbon Neutrality, Zhejiang Wanli University, Ningbo 315100, China
- School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Weiwei Li
- Chilwee Power Co., Ltd., No. 18 Chengnan Road, Huaxi Industrial Zone, Changxing 313100, China
| | - Xiaowei Liu
- Chilwee Power Co., Ltd., No. 18 Chengnan Road, Huaxi Industrial Zone, Changxing 313100, China
| | - Xiumei Song
- Institute of Carbon Neutrality, Zhejiang Wanli University, Ningbo 315100, China
| | - Hongpeng Li
- College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China
| | - Lichao Tan
- Institute of Carbon Neutrality, Zhejiang Wanli University, Ningbo 315100, China
- School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China
- Chilwee Power Co., Ltd., No. 18 Chengnan Road, Huaxi Industrial Zone, Changxing 313100, China
- State Key Laboratory of Clean Energy Utilization, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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