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4 results on '"Xiying Zhou"'

1. Facile synthesis of porous MnCo2O4.5 hierarchical architectures for high-rate supercapacitors

Author

Wenyao Li, Junqing Hu, Zhigang Chen, Rujia Zou, Guosheng Song, Kaibing Xu, Xiying Zhou, and Jianmao Yang

Subjects
Supercapacitor, Materials science, Oxide, Nanotechnology, General Chemistry, Condensed Matter Physics, Capacitance, Hydrothermal circulation, law.invention, chemistry.chemical_compound, chemistry, Transition metal, law, General Materials Science, Calcination, Porosity, Current density
Abstract

Porous urchin-like MnCo2O4.5 hierarchical architectures (~4–6 μm in diameter) synthesized by a facile hydrothermal route followed by a calcination process exhibited a specific capacitance of 151.2 F g−1 at 5 mV s−1, outstanding rate capability with 83.6% specific capacitance retention even when the current density is increased 50 times and excellent long-term cycle stability at progressively varied current densities and could be considered as a potential mixed transition metal oxide material for high-rate supercapacitors in some special applications that do not require a high capacitance.

Published
2014

2. Magnetic-field-assisted hydrothermal synthesis of 2 × 2 tunnels of MnO2 nanostructures with enhanced supercapacitor performance

Author

Xiying Zhou, Wenyao Li, Junqing Hu, and Jiajia Shao

Subjects
Supercapacitor, Electrode material, Nanostructure, Materials science, Electrode, Hydrothermal synthesis, General Materials Science, Nanotechnology, General Chemistry, Condensed Matter Physics, Capacitance, Cyclic stability, Magnetic field
Abstract

An effective magnetic-field-assisted hydrothermal synthesis was used to induce the growth of 2 × 2 tunnel MnO2 nanostructures for supercapacitor application. The as-fabricated electrode from the MnO2 nanostructures exhibited an enhanced specific capacitance of 306 F g−1 at 0.5 A g−1 and desirable cyclic stability, which considerably exceed the performance of MnO2 material prepared with and without a high magnetic field, making it a promising electrode material for supercapacitors.

Published
2014

3. Magnetic-field-assisted hydrothermal synthesis of 2 x 2 tunnels of MnO2 nanostructures with enhanced supercapacitor performance.

Author

Jiajia Shao, Wenyao Li, Xiying Zhou, and Junqing Hu

Subjects
MAGNETIC fields, CHEMICAL synthesis, MANGANESE oxides, NANOSTRUCTURES, SUPERCAPACITORS
Abstract

An effective magnetic-field-assisted hydrothermal synthesis was used to induce the growth of 2 x 2 tunnel MnO2 nanostructures for supercapacitor application. The as-fabricated electrode from the MnO2 nanostructures exhibited an enhanced specific capacitance of 306 F g-1 at 0.5 A g-1 and desirable cyclic stability, which considerably exceed the performance of MnO2 material prepared with and without a high magnetic field, making it a promising electrode material for supercapacitors. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
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4. Facile synthesis of porous MnCo2O4.5 hierarchical architectures for high-rate supercapacitors.

Author

Wenyao Li, Kaibing Xu, Guosheng Song, Xiying Zhou, Rujia Zou, Jianmao Yang, Zhigang Chen, and Junqing Hu

Subjects
CHEMICAL synthesis, MANGANESE compounds, SUPERCAPACITORS, TRANSITION metal catalysts, TRANSITION metals spectra, HYDROTHERMAL alteration, ELECTRIC capacity
Abstract

Porous urchin-like MnCo2O4.5 hierarchical architectures (~4-6 μm in diameter) synthesized by a facile hydrothermal route followed by a calcination process exhibited a specific capacitance of 151.2 F g-1 at 5 mV s-1, outstanding rate capability with 83.6% specific capacitance retention even when the current density is increased 50 times and excellent long-term cycle stability at progressively varied current densities and could be considered as a potential mixed transition metal oxide material for high-rate supercapacitors in some special applications that do not require a high capacitance. [ABSTRACT FROM AUTHOR]

Published
2014
Full Text
View/download PDF

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