Enhanced charge storage of ultrathin polythiophene films within porous nanostructures

Siamak Nejati, Thomas E. Minford, Yuriy Y. Smolin, Kenneth K.S. Lau

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

In a single step polymerization and coating, oxidative chemical vapor deposition (oCVD) has been used to synthesize unsubstituted polythiophene. Coatings have been conformally coated within porous nanostructures of anodized aluminum oxide, titanium dioxide, and activated carbon. Significant enhancement in charge capacity has been found with ultrathin polythiophene coatings that preserve the surface area and pore space of the nanostructures. Pseudocapacitors consisting of ultrathin polythiophene coated within activated carbon yielded increases of 50 and 250% in specific and volumetric capacitance compared with bare activated carbon. Devices were stable up to the 5000 cycles tested with only a 10% decrease in capacitance.

Original languageEnglish (US)
Pages (from-to)5413-5422
Number of pages10
JournalACS Nano
Volume8
Issue number6
DOIs
StatePublished - Jun 24 2014
Externally publishedYes

Keywords

  • activated carbon
  • nanostructured electrode
  • oxidative chemical vapor deposition (oCVD)
  • polythiophene
  • pseudocapacitor

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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