4.6 Article

Graphene quantum dots-carbon nanotube hybrid arrays for supercapacitors

Journal

NANOTECHNOLOGY
Volume 24, Issue 19, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/24/19/195401

Keywords

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Funding

  1. NSFC [21004006, 21173023, 21174019, 51161120361]
  2. SRF for ROCS, SEM [20100732002]
  3. Research Foundation for the Doctoral Program of Higher Education of China [20101101120036]
  4. National Basic Research Program of China [2011CB013000]
  5. 111 Project [B07012]
  6. Program for the New Century Excellent Talents in University [NCET-10-0047]

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Graphene quantum dots (GQDs) have been successfully deposited onto aligned carbon nanotubes (CNTs) by a benign electrochemical method and the capacitive properties of the as-formed GQD/CNT hybrid arrays were evaluated in symmetrical supercapacitors. It was found that supercapacitors fabricated from GQD/CNT hybrid arrays exhibited a high capacitance of 44 mF cm(-2), representing a more than 200% improvement over that of bare CNT electrodes.

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