Croatica Chemica Acta, Vol. 97 No. 3, 2024.
Izvorni znanstveni članak
https://doi.org/10.5562/cca4120
Preparation of a Promising MXene Loaded NiCo2O4 Complementary Nanocomposite for Supercapacitor Electrodes
Yanhua Li
; School of Metallurgy and Energy, North China University of Science and Technology, Tangshan, Hebei, 063210, China
Kuo Zhang
; School of Metallurgy and Energy, North China University of Science and Technology, Tangshan, Hebei, 063210, China
Dongjia Wang
; School of Metallurgy and Energy, North China University of Science and Technology, Tangshan, Hebei, 063210, China
Qun Li
; School of Metallurgy and Energy, North China University of Science and Technology, Tangshan, Hebei, 063210, China
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Shuhuan Wang
; School of Metallurgy and Energy, North China University of Science and Technology, Tangshan, Hebei, 063210, China
*
* Dopisni autor.
Sažetak
The insufficient specific capacitance of MXene limits its application in supercapacitors. To solve the problem, MXene/NiCo2O4 composite was designed via the in-situ growth of NiCo2O4 nanowires on MXene nanosheets. The introduction of NiCo2O4 nanowires composed of nanoparticles was conducive to the intercalation of MXene nanosheets and the ion permeation inside the electrode, which will enhance the electrochemical performance. As a result, the specific capacitance of the composite was greatly improved originated from reactions of M-O/M-O-OH (M = Co, Ni) and the unique hierarchical structure. The MXene/NiCo2O4 nanocomposite presented a higher specific capacitance of 1012 F g–1 at 0.5 A g–1 and 827.69 F g–1 at 1 A g–1 than MXene (8.7 F g–1 at 0.5 A g–1). The specific capacitance of MXene/NiCo2O4 was retained as high as 84.1 % with 696 F g–1 at 2 A g–1, which demonstrates the high rate performance. More importantly, the capacitance retention rate could be kept with 83.3 % over 1000 cycles, indicating MXene/NiCo2O4 has a great potential to be applied in supercapacitors. The work provides a feasible strategy for the creation and application of the high-performance composite electrode.
Ključne riječi
nanocomposites; energy storage and conversion; supercapacitor; excellent electrochemical performance
Hrčak ID:
323371
URI
Datum izdavanja:
10.12.2024.
Posjeta: 218 *