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Start Over Author "Cheng, Kui" Journal electrochimica acta
39 results on '"Cheng, Kui"'

34. High-capacitance MnO2 nanoflakes on preformed C/TiO2 shell/core nanowire arrays for electrochemical energy storage.

Author

SainanYang, Cheng, Kui, Huang, Jichun, Ye, Ke, Xu, Yang, Cao, Dianxue, and Wang, Xingmei Zhang Guiling

Subjects
*ELECTRIC capacity, *MANGANESE oxides, *TITANIUM dioxide, *NANOWIRES, *ELECTROCHEMICAL analysis, *ENERGY storage
Abstract

Highlights: [•] MnO2/C/TiO2 shell/shell/core arrays electrode has been prepared by simple thermal reaction and electrodeposition method. [•] The unique shell/shell/core structure has easy access of electrolyte ions, large surface to volume and high electrochemical activity. [•] The MnO2/C/TiO2 shell/shell/core arrays exhibits high specific capacitance of 639 F g−1 at a charge/discharge current density of 1 A g−1. [ABSTRACT FROM AUTHOR]

Published
2014
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35. High performance of Au nanothorns supported on Ni foam substrate as the catalyst for NaBH4 electrooxidation.

Author

Yang, Fan, Cheng, Kui, Ye, Ke, Wei, Xiaopei, Xiao, Xue, Guo, Fen, Wang, Guiling, and Cao, Dianxue

Subjects
*GOLD nanoparticles, *NICKEL, *METAL foams, *SUBSTRATES (Materials science), *SODIUM compounds, *OXIDATION, *CATALYSIS
Abstract

Highlights: [•] Electrodeposition of Au nanothorns supported on Ni foam for NaBH4 oxidation is reported [•] The unique 3D electrode exhibits good catalytic performance for NaBH4 electrooxidation [•] The unique 3D electrode is consisted of thorn-like Au with the corrugated appearance. [Copyright &y& Elsevier]

Published
2014
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36. Three-dimensional porous Ni film electrodeposited on Ni foam: High performance and low-cost catalytic electrode for H2O2 electrooxidation in KOH solution.

Author

Yang, Fan, Cheng, Kui, Xue, Xiao, Yin, Jinling, Wang, Guiling, and Cao, Dianxue

Subjects
*NICKEL films, *ELECTROPLATING, *CATALYTIC activity, *ELECTRODES, *OXIDATION of water, *POTASSIUM hydroxide
Abstract

Highlights: [•] A 3D porous Ni film is electrodeposited on Ni foam via electrodeposition. [•] Ni/Ni-foam electrode shows high catalytic activity for H2O2 electrooxidation. [•] DPPFC with Ni/Ni foam anode and Pd/CFC cathode has been demonstrated. [ABSTRACT FROM AUTHOR]

Published
2013
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37. Pd nanofilm supported on C@TiO2 nanocone core/shell nanoarrays: A facile preparation of high performance electrocatalyst for H2O2 electroreduction in acid medium.

Author

Cheng, Kui, Yang, Fan, Zhang, Dongming, Yin, Jinling, Cao, Dianxue, and Wang, Guiling

Subjects
*PALLADIUM catalysts, *NANOFILMS, *TITANIUM dioxide, *STRUCTURAL shells, *ELECTROCATALYSTS, *HYDROGEN peroxide, *ELECTROLYTIC reduction, *SURFACE coatings, *CARBON
Abstract

Highlights: [•] Pd nanofilm supported on carbon coating TiO2 nanocone arrays (C@TiO2) is reported. [•] Pd NF-C@TiO2 electrode shows an open structure allowing the full utilization of Pd. [•] Pd NF-C@TiO2 electrode exhibits high catalytic activity for H2O2 reduction. [Copyright &y& Elsevier]

Published
2013
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38. Dendritic palladium decorated with gold by potential pulse electrodeposition: Enhanced electrocatalytic activity for H2O2 electroreduction and electrooxidation.

Author

Yang, Fan, Cheng, Kui, Wu, Tianhao, Zhang, Ying, Yin, Jinling, Wang, Guiling, and Cao, Dianxue

Subjects
*PALLADIUM, *GOLD, *ELECTROPLATING, *ELECTROLYTIC reduction, *OXIDATION, *ELECTRODES
Abstract

Highlights: [•] Dendritic Pd supported on CFC is decorated with Au via potential pulse technique. [•] Au@Pd/CFC electrode shows high catalytic activity for H2O2 reduction and oxidation. [•] DPPFC obtains a much higher performance based on the Au@Pd/CFC electrodes. [ABSTRACT FROM AUTHOR]

Published
2013
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39. Preparation of Co3O4 nanowires grown on nickel foam with superior electrochemical capacitance

Author

Huang, Jichun, Zhu, Jiangtao, Cheng, Kui, Xu, Yang, Cao, Dianxue, and Wang, Guiling

Subjects
*NICKEL, *METAL foams, *COBALT compounds, *SYNTHESIS of nanowires, *X-ray diffraction, *ELECTROCHEMICAL analysis, *NANOSTRUCTURES
Abstract

Abstract: Co3O4 nanowires have been successfully synthesized on nickel foam by a hydrothermal method. The morphology of Co3O4 is examined by scanning and transmission electron microscopy and the phase structure of Co3O4 nanowires is confirmed by X-ray diffraction. The electrochemical capacitance behavior of the Co3O4 nanowires electrode is investigated by cyclic voltammetry, galvanostatic charge/discharge test and electrochemical impedance spectroscopy in 6moldm−3 KOH solution. The results show that the Co3O4 nanowires have diameters of around 100nm and the lengths up to 1–2μm. The specific capacitance of Co3O4 nanowires is 1019.58Fg−1 at 3.38Ag−1 and 466.06Fg−1 at 33.80Ag−1. The capacitance loss is less than 5% after 1000 charge/discharge cycles at 3.38Ag−1 and with columbic efficiency higher than 98%. The enhancement of pseudocapacitive properties at a higher charging/discharging rate is due to the porous nanostructure and the high utilization of active material. [Copyright &y& Elsevier]

Published
2012
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