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Keywords:

  • Co3O4;
  • hierarchical nanostructures;
  • twin-spheres;
  • supercapacitors;
  • multistep-splitting growth
Thumbnail image of graphical abstract

3D hierarchical Co3O4 twin-spheres and their electrochemical properties are reported by Feng Li, Dianzhen Jia, and co-workers on page 4052. A multistep splitting growth originating from 1D nanorods is proposed to understand the formation of the 3D nanoarchitectures. Supercapacitors fabricated with the 3D materials exhibit excellent performance in energy storage.