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Synthesis of Mesoporous Co3O4/NiCo2O4 Nanorods and Their Electrochemical Study

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Mesoporous Co3O4/NiCo2O4 nanorods were obtained by a hydrothermal reaction with the assistance of Ni foam and subsequent annealing treatment. The characterization of this composition by X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, energy dispersive spectra and Brunauer-Emmett-Teller analysis revealed that the nanorods consisted of Co3O4 and NiCo2O4 phase, exhibiting high porosity and rich crystal defects. The electrochemical data showed a specific capacitance of 1173 mF cm−2 and 606 mF cm−2 at 2 mV s−1 and 1 mA cm−2, respectively. Its cycling performance was 83.9% at 3 mA cm−2 after 4000 cycles. Furthermore, the asymmetric supercapacitor Co3O4/NiCo2O4//AC delivered an energy density of 11.7 W h kg−1 and power density of 760 W kg−1.
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Keywords: Co3O4/NiCo2O4 Nanorods; Mesoporous; Supercapacitor

Document Type: Research Article

Affiliations: 1: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China 2: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, P. R. China 3: College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, P. R. China 4: College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China

Publication date: January 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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