Pore structure analysis of activated carbon fiber by microdomain-based model

Nanako Shiratori, Kyung Jin Lee, Jin Miyawaki, Seong Hwa Hong, Isao Mochida, Bai An, Kiyoshi Yokogawa, Jyongsik Jang, Seong Ho Yoon

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

The pore structures of commercial pitch and PAN-based activated carbon fibers (ACFs) were investigated. The pore size and pore size distribution of pitch-based ACFs were measured by nitrogen adsorption isotherms and 129Xe NMR spectroscopy and compared with each other. Scanning tunneling microscopy showed that the ACFs were composed of spherical microdomain units the size of a few nanometers. The activation mechanism of ACFs was considered and explained by novel hypothesis; the concept of microdomain structure of ACFs was considered and explained to overcome limitation of the conventional fractal hypothesis. Whereas micropores were generated on each microdomain, the origin of mesopores was interdomain pores, resulting from the microdomain hypothesis.

Original languageEnglish
Pages (from-to)7631-7637
Number of pages7
JournalLangmuir
Volume25
Issue number13
DOIs
Publication statusPublished - Jul 7 2009

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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