Journal of Applied Electrochemistry

, Volume 49, Issue 3, pp 305–314 | Cite as

Preparation and properties of Co3O4-doped TiO2 nanotube array electrodes

  • Xiaoliu Wang
  • Jianling ZhaoEmail author
  • Tiantian Xiao
  • Zhongwei Li
  • Xixin WangEmail author
Research Article
Part of the following topical collections:
  1. Capacitors
  2. Capacitors


Co3O4-doped TiO2 nanotube array electrodes were prepared by anodizing the Co–Ti alloys with different Co contents. Morphologies, elemental compositions, crystal structures, and electrochemical properties of the samples were characterized through scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and electrochemical workstation. The effects of Co content, annealing temperature and testing electrolyte on the electrochemical properties of the electrodes were studied. Results show that the areal capacitance values of TiO2 nanotube arrays were obviously improved by doping with Co3O4. The electrochemical properties of Co3O4-doped TiO2 nanotube array electrodes were best when the Co content in the alloys was 9%; the annealing temperature was 100 °C and the testing electrolyte was 0.5 M Na2SO4. The Co3O4-doped TiO2 nanotube array electrodes prepared under the optimal conditions had a high areal capacitance value of 937.9 µF cm−2 when the scan rate was 10 mV s−1 and the electrodes exhibited good rate and superior cycling performance.

Graphical abstract


Co–Ti alloys Anodization Co3O4 TiO2 nanotube arrays Electrochemical properties 



This work is supported by The National Natural Science Foundation of China (No. 51272064) and The Key Basic Research Programme of Hebei Province of China (No. 17964401D).


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringHebei University of TechnologyTianjinChina

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