Novel nanoporous carbon derived from coal tar pitch/polyethylene glycol diacid blends as electrodes for ultracapacitors

Ramakrishnan Rajagopalan, Keith Perez, Henry Foley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nanoporous carbon materials with high surface area (1500 - 2000 m 2/g) and narrow pore size distribution ranging from 1 - 3 nm were synthesized using polyfurfuryl alcohol/polyethylene glycol diacid and coal tar pitch/polymer blends. Electrical double layer capacitance of synthesized carbon was measured using cyclic voltammetry. There is a strong correlation between the surface area of the carbon and the specific capacitance. Carbon that had surface area smaller than 1000 m2/g had specific capacitance less than 50 F/g while the carbons having surface area from 1000 - 1500 m 2/g showed specific capacitances in the order of 200 -250 F/g. It was shown that the mesoporosity and macroporosity in the parent carbon are critical for both activation and as well as the specific capacitance of the material. The use of these carbons in EDLCs was also demonstrated by fabricating a two-electrode ultracapacitor.

Original languageEnglish (US)
Title of host publicationMobile Energy
PublisherMaterials Research Society
Pages129-133
Number of pages5
ISBN (Print)9781604234213
DOIs
StatePublished - 2006
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 27 2006Dec 1 2006

Publication series

NameMaterials Research Society Symposium Proceedings
Volume973
ISSN (Print)0272-9172

Other

Other2006 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/27/0612/1/06

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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