Synthesis and characterization of a nico2o4@nico2o4 hierarchical mesoporous nanoflake electrode for supercapacitor applicationsopen access
- Authors
- Chen, Xin; Li, Hui; Xu, Jianzhou; Jaber, Fadi; Musharavati, Farayi; Zalnezhad, Erfan; Bae, Sung Chul; Hui, Kwan San; Hui, Kwun Nam; Liu, Junxing
- Issue Date
- Jul-2020
- Publisher
- MDPI
- Keywords
- supercapacitors; electrodeposition; NiCo2O4; nanostructure
- Citation
- NANOMATERIALS, v.10, no.7, pp.1 - 13
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOMATERIALS
- Volume
- 10
- Number
- 7
- Start Page
- 1
- End Page
- 13
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145394
- DOI
- 10.3390/nano10071292
- ISSN
- 2079-4991
- Abstract
- In this study, we synthesized binder-free NiCo2O4@NiCo(2)O(4)nanostructured materials on nickel foam (NF) by combined hydrothermal and cyclic voltammetry deposition techniques followed by calcination at 350 degrees C to attain high-performance supercapacitors. The hierarchical porous NiCo2O4@NiCo(2)O(4)structure, facilitating faster mass transport, exhibited good cycling stability of 83.6% after 5000 cycles and outstanding specific capacitance of 1398.73 F g(-1)at the current density of 2 A center dot g(-1), signifying its potential for energy storage applications. A solid-state supercapacitor was fabricated with the NiCo2O4@NiCo(2)O(4)on NF as the positive electrode and the active carbon (AC) was deposited on NF as the negative electrode, delivering a high energy density of 46.46 Wh kg(-1)at the power density of 269.77 W kg(-1). This outstanding performance was attributed to its layered morphological characteristics. This study explored the potential application of cyclic voltammetry depositions in preparing binder-free NiCo2O4@NiCo(2)O(4)materials with more uniform architecture for energy storage, in contrast to the traditional galvanostatic deposition methods.
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