Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 15, Issue 1, Pages 966-976Publisher
ESG
DOI: 10.20964/2020.01.55
Keywords
Co3O4; electrochemical; supercapacitors; energy density
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Funding
- School Foundation for North University of China [110246]
- Shanxi Science foundation of China [201801D221197]
- Shanxi Scholarship Council of China [2017-094]
- National Science Foundation of China [61501408]
- Shanxi '1311 project' Key Subject Construction [1331KSC]
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Herein, triangular prism shaped Co3O4 material was constructed by a facile route and used as a supercapacitor electrode. The Co3O4 material was fully characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and transmission electron microscope (TEM). Electrochemical characterization revealed that the Co3O4 material showed a high specific capacitance of 907.1 F g (-1) at a current density of 1A g(-1) and excellent cycle stability (with 86.5% of the initial specific capacitance remaining after 3000 cycles) at a current density of 10 A g(-1). Additionally, an energy density of 23.0 Wh/kg with a power density of 0.26 kW/kg was obtained over the Co3O4.
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