Facile synthesis of petal-like nanocrystalline Co3O4 film using direct high-temperature oxidation

  • Siru Ren
  • Yukun Guo
  • Longlong Ju
  • Han Xiao
  • Anmin HuEmail author
  • Ming Li


A novel petal-like cobalt oxide (PCO) structure has been fabricated by electrodeposition of the nanostructured Co film followed by elevated-temperature oxidation. The structure exhibits monodisperse petal-like cobalt oxide nanosheets and core–shell structure with oxide as shell and metal as core. The morphology was studied by changing the surface structure of the initial Co film and oxidation temperature, finding that the PCO could only be obtained by calcining the arched Co film at 500 °C. The growth mechanism is briefly discussed based on the Caberra–Mott theory. The electrochemical behaviour analysis indicates the prepared material’s potential as electrode materials in supercapacitors.



This work was sponsored by the National Natural Science Foundation of China (61176097) and (61376107). We thank the Instrumental Analysis Center of Shanghai Jiao Tong University, for the use of the SEM equipment.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Siru Ren
    • 1
  • Yukun Guo
    • 1
    • 2
  • Longlong Ju
    • 1
  • Han Xiao
    • 1
  • Anmin Hu
    • 1
    Email author
  • Ming Li
    • 1
  1. 1.State Key Laboratory of Metal Matrix Composites, School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China
  2. 2.Department of Materials Science and EngineeringNorthwestern UniversityEvanstonUSA

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