title: Pore structure analysis of activated carbon fiber by microdomain-based model.
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.
authors.affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580, Japan.
authors.forename: Nanako
authors.initials: N
authors.lastname: Shiratori
authors.forename: Kyung Jin
authors.initials: KJ
authors.lastname: Lee
authors.forename: Jin
authors.initials: J
authors.lastname: Miyawaki
authors.forename: Seong-Hwa
authors.initials: SH
authors.lastname: Hong
authors.forename: Isao
authors.initials: I
authors.lastname: Mochida
authors.forename: Bai
authors.initials: B
authors.lastname: An
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yokogawa
authors.forename: Jyongsik
authors.initials: J
authors.lastname: Jang
authors.forename: Seong-Ho
authors.initials: SH
authors.lastname: Yoon