Layer-dependent supercapacitance of graphene films grown by chemical vapor deposition on nickel foam

Wei Chen, Zhongli Fan, Gaofeng Zeng, Zhiping Lai

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

High-quality, large-area graphene films with few layers are synthesized on commercial nickel foams under optimal chemical vapor deposition conditions. The number of graphene layers is adjusted by varying the rate of the cooling process. It is found that the capacitive properties of graphene films are related to the number of graphene layers. Owing to the close attachment of graphene films on the nickel substrate and the low charge-transfer resistance, the specific capacitance of thinner graphene films is almost twice that of the thicker ones and remains stable up to 1000 cycles. These results illustrate the potential for developing high-performance graphene-based electrical energy storage devices. © 2012 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)251-256
Number of pages6
JournalJournal of Power Sources
Volume225
DOIs
StatePublished - Mar 2013

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering
  • Renewable Energy, Sustainability and the Environment

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