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Journal article
Hierarchical Manganese-Doped Nickel–Cobalt Oxide Electrodes with Graphene for Use as High-Energy-Density Supercapacitors
Surfaces (Basel), Vol.8(3), 43
2025
Abstract
Thin films of manganese–nickel–cobalt oxide with graphene (G@MNCO) were deposited on copper foam using electrochemical deposition. NiCo2O4 is the main phase in these films. As the proportion of graphene in the precursor solution increases, the oxygen vacancies in the samples also increase. The microstructure of these samples evolves into hierarchical vertical flake structures. Cyclic voltammetry measurements conducted within the potential range of 0–1.2 V reveal that the electrode with the highest graphene content achieves the highest specific capacitance, approximately 475 F/g. Furthermore, it exhibits excellent cycling durability, maintaining 95.0% of its initial capacitance after 10,000 cycles. The superior electrochemical performance of the graphene-enhanced, manganese-doped nickel–cobalt oxide electrode is attributed to the synergistic contributions of the hierarchical G@MNCO structure, the three-dimensional Cu foam current collector, and the binder-free fabrication process. These features promote quicker electrolyte ion diffusion into the electrode material and ensure robust adhesion of the active materials to the current collector.
Details
- Title
- Hierarchical Manganese-Doped Nickel–Cobalt Oxide Electrodes with Graphene for Use as High-Energy-Density Supercapacitors
- Authors/Creators
- Kuan-Ching Lee - University of NottinghamGuan-Ting PanThomas Chung-Kuang Yang - National Taipei University of TechnologyPo-Cheng Shen - National Cheng Kung UniversityKuan Lun Pan - Industrial Technology Research InstituteTimm Joyce Tiong - University of Nottingham Malaysia CampusAleksandar N. Nikoloski - Murdoch University, Centre for Water, Energy and WasteChao-Ming Huang - Kun Shan University
- Publication Details
- Surfaces (Basel), Vol.8(3), 43
- Publisher
- MDPI
- Number of pages
- 15
- Identifiers
- 991005816848107891
- Copyright
- © 2025 by the authors.
- Murdoch Affiliation
- School of Engineering and Energy; Centre for Water, Energy and Waste
- Language
- English
- Resource Type
- Journal article
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