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Keywords:

  • supercapacitor;
  • carbon nanocages;
  • large specific surface area;
  • high specific capacitance;
  • electrochemical stability
Thumbnail image of graphical abstract

Carbon nanocages that demonstrate high specific capacitance in a wide range of charging–discharging rates with high stability, superior to the most carbonaceous supercapacitor electrode materials to date, are presented by Xizhang Wang, Zheng Hu, and coworkers on page 347. The large specific surface area, good mesoporosity, and regular structure are responsible for the excellent performance.