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Jiao Z, Chen Y, Du M, Demir M, Yan F, Xia W, Zhang Y, Wang C, Gu M, Zhang X, Zou J. 3D hollow NiCo LDH nanocages anchored on 3D CoO sea urchin-like microspheres: A novel 3D/3D structure for hybrid supercapacitor electrodes. J Colloid Interface Sci 2023; 633:723-736. [PMID: 36508396 DOI: 10.1016/j.jcis.2022.11.131] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022]
Abstract
The research on the structure of advanced electrode materials is significant in the field of supercapacitors. Herein, for the first time, we propose a novel 3D/3D composite structure by a multi-step process, in which 3D hollow NiCo LDH nanocages are immobilized on 3D sea urchin-like CoO microspheres. Results show that the 3D CoO acts as an efficient and stable channel for ion diffusion, while the hollow NiCo LDH provides abundant redox-active sites. The calculated results based on density function theory (DFT) show that the CoO@NiCo LDH heterostructure has an enhanced density of states (DOS) near the Fermi level and strong adsorption capacity for OH-, indicating its excellent electrical conductivity and electrochemical reaction kinetics. As a result, the CoO@NiCo LDH electrode has an areal specific capacity of 4.71C cm-2 at a current density of 3 mA cm-2 (440.19C g-1 at 0.28 A g-1) and can still maintain 88.76 % of the initial capacitance after 5000 cycles. In addition, the assembled hybrid supercapacitor has an energy density of 5.59 mWh cm-3 at 39.54 mW cm-3.
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Affiliation(s)
- Zhichao Jiao
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Yuanqing Chen
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China.
| | - Miao Du
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Muslum Demir
- Department of Chemical Engineering, Osmaniye Korkut Ata University, Osmaniye 80000, Turkey
| | - Fuxue Yan
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Weimin Xia
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Ying Zhang
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Cheng Wang
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Mengmeng Gu
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Xiaoxuan Zhang
- School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
| | - Juntao Zou
- Engineering Research Center of Conducting Materials and Composite Technology, Ministry of Education, Xi'an University of Technology, Xi'an 710048, China; Shaanxi Province Key Laboratory of Electrical Materials and Infiltration Technology, Xi'an University of Technology, Xi'an 710048, China
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Fan J, Hu L, Qi Z, Wan T, Huang S, Zhang X, Han Z, Chu D. Electrodeposited cobalt sulfide on a vertical graphene nanocomposite for high-performance supercapacitors. NEW J CHEM 2021. [DOI: 10.1039/d1nj03777c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel cobalt sulfide/vertical graphene (CoS/VG) composite electrode was fabricated via a facile electrodeposition method for high-performance supercapacitor application.
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Affiliation(s)
- Jiajun Fan
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - Long Hu
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - Zhenjun Qi
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - Tao Wan
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - Shihao Huang
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - Xiao Zhang
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - Zhaojun Han
- School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
- CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW 2070, Australia
| | - Dewei Chu
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
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Rahman AU, Noreen H, Nawaz Z, Iqbal J, Rahman G, Yaseen M. Synthesis of graphene nanoplatelets/polythiophene as a high performance supercapacitor electrode material. NEW J CHEM 2021. [DOI: 10.1039/d1nj02865k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of a stable, efficient, inexpensive and high capacitance electrode material for supercapacitors is posing great challenges for researchers.
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Affiliation(s)
- Ata ur Rahman
- Institute of Chemical Sciences, University of Peshawar, 25120, Peshawar, KP, Pakistan
| | - Hamsa Noreen
- Institute of Chemical Sciences, University of Peshawar, 25120, Peshawar, KP, Pakistan
- Institute of Chemistry, University of Campinas, CEP 13083-970 Campinas, SP, Brazil
| | - Zeeshan Nawaz
- SABIC Technology & Innovation, Riyadh 11551, KSA, Saudi Arabia
| | - Javed Iqbal
- Department of Physics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Gul Rahman
- Institute of Chemical Sciences, University of Peshawar, 25120, Peshawar, KP, Pakistan
| | - Muhammad Yaseen
- Institute of Chemical Sciences, University of Peshawar, 25120, Peshawar, KP, Pakistan
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