Graphene in Supercapacitor Applications

Wen Yang*, Mei Ni, Xin Ren, Yafen Tian, Ning Li, Yuefeng Su, Xiaoling Zhang

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

178 Citations (Scopus)

Abstract

The use of graphene-based materials for electrochemical double-layer capacitor (EDLCs) electrodes is reviewed. To establish a detailed understanding of the science and technology of graphene-based EDLCs, we summarize the key aspects of graphene-based materials, including specific surface area, pore size distribution, interlayer distance, heteroatom doping, surface functionalities, and conductivity. We also discuss the contribution of these physical-chemical properties to the capacitance and rate performance of graphene-based EDLCs. Although graphene is one of the most promising electrode materials for supercapacitors, many challenges still remain, particularly to establish a standardized measurement of capacitor performance, to reduce the price of graphene-based EDLC, to understand the mechanism of ion sorption on graphene, to study self-discharge mechanisms of graphene-based supercapacitors, to propose a new storage method for graphene-based EDLCs, etc. The full potential of graphene-based EDLCs as energy storage sources has not been fully developed, but as outlined in this review, the future looks very promising.

Original languageEnglish
Pages (from-to)416-428
Number of pages13
JournalCurrent Opinion in Colloid and Interface Science
Volume20
Issue number5-6
DOIs
Publication statusPublished - 1 Oct 2015

Keywords

  • Activated carbon
  • Edge
  • Electrochemical double-layer capacitor
  • Graphene-based materials
  • Heteroatom doped graphene
  • Interlayer distance
  • Supercapacitor
  • Surface area

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