期刊
CERAMICS INTERNATIONAL
卷 47, 期 6, 页码 8433-8440出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.11.208
关键词
Specific capacitance; Supercapacitor; Energy density
资金
- National Key Research and Development Program of China [2019YFB2004800]
- National Natural Science Foundation for China as National Major Scientific Instruments Development Project [61727806]
- National Science Foundation for Distinguished Young Scholars of China [61525107]
- Shanxi Postgraduate Innovation Project [2020BY099]
- Fund for key Laboratory of Equipment Pre-research [6142001190409]
A novel PANI-Co3O4 supercapacitor electrode was synthesized in this study, showing a specific capacitance of 3105.46 F g(-1) and good cycle stability. This composite material has great potential for application in high-performance energy storage devices.
In this work, a novel PANI-Co3O4 supercapacitor electrode used foamed nickel as substrate was synthesized by hydrothermal and in situ polymerized method. The PANI-Co3O4 was visualized by XRD, SEM, TEM and XPS, and its morphology showed that the Co3O4 nanorods were coated in PANI more uniformly. Electrochemical studies revealed that the specific capacitance of PANI-Co3O4 composite at 1 A g(-1) is 3105.46 F g(-1) (31.05 F cm(-2)), which is 14.7 times higher than that of Co3O4 alone. Additionally, the electric capacity maintained 74.81% of the original value after 3000 cycles, indicating satisfactory cycle stability. Moreover, the PANI-Co3O4//AC showed a high energy density of 58.84 W h kg(-1) at 0.16 kW kg(-1). This study not only points out the new way of PANI/semiconductor metal oxide composite, but also has a great potential for application in high-performance energy storage devices.
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