Graphene quantum dots-carbon nanotube hybrid arrays for supercapacitors

Yue Hu; Yang Zhao; Gewu Lu; Nan Chen; Zhipan Zhang; Hui Li; Huibo Shao; Liangti Qu

doi:10.1088/0957-4484/24/19/195401

Graphene quantum dots-carbon nanotube hybrid arrays for supercapacitors

Nanotechnology. 2013 May 17;24(19):195401. doi: 10.1088/0957-4484/24/19/195401. Epub 2013 Apr 12.

Authors

Yue Hu¹, Yang Zhao, Gewu Lu, Nan Chen, Zhipan Zhang, Hui Li, Huibo Shao, Liangti Qu

Affiliation

¹ Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijing, People's Republic of China.

PMID: 23579638
DOI: 10.1088/0957-4484/24/19/195401

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't