Controllable growth of CNTs on graphene as high-performance electrode material for supercapacitors

Zhi Yu Yang, Yu Fei Zhao, Qing Qing Xiao, Yu Xia Zhang, Lin Jing, Yi Ming Yan*, Ke Ning Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

Design and synthesis of three-dimensional (3D) structured carbon materials are crucial for achieving high-performance supercapacitors (SC) for energy storage. Here, we report the preparation of 3D architectured GN-CNT hybrid as SC electrodes. Controllable growth of carbon nanotubes on graphene sheets was realized through a facile one-pot pyrolysis strategy. The length of the carbon nanotubes could be rationally tuned by adjusting the amount of precursors. Correspondingly, the resulted GN-CNT hybrid showed adjustable electrochemical performance as an SC electrode. Importantly, the GN-CNT exhibited a high specific surface area of 903 m2 g-1 and maximum specific capacitance of 413 F g-1 as SC electrodes at a scan rate of 5 mV s-1 in 6 M KOH aqueous solution. This work paves a feasible pathway to prepare carbon electrode materials with favorable 3D architecture and high performance, for use in energy storage and conversion.

Original languageEnglish
Pages (from-to)8497-8504
Number of pages8
JournalACS applied materials & interfaces
Volume6
Issue number11
DOIs
Publication statusPublished - 11 Jun 2014

Keywords

  • 3D architecture
  • carbon nanotube
  • controllable growth
  • graphene
  • one-pot strategy
  • supercapacitor

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