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CC BY V4.0, Open Access
Journal article
In-depth fine structure of carbon micropores with positron annihilation lifetime spectroscopy
Chemical Physics Letters, Vol.890, 142741
2026
Abstract
The detailed pore structure analysis of nanoporous carbons is essential for designing high-performance materials for clean-energy technologies. We used activated carbon fibres (ACFs) with average pore sizes of 0.8 and 1.3 nm. Using an ACF-polytetrafluoroethylene sample, the carbon-specific positron annihilation lifetime (CS-PAL) of the ACF was determined based on the lifetime versus ACF content relationship. Pore sizes determined by CS-PAL spectroscopy were smaller than those reported by Ar adsorption: ACFs of 0.8 and 1.3 nm were 0.4 and 0.2 nm, respectively, suggesting that the 0.8 nm-ACF exhibited single-layered graphitic islands within the pore and the 1.3 nm-ACF had plain pore walls.
Details
- Title
- In-depth fine structure of carbon micropores with positron annihilation lifetime spectroscopy
- Authors/Creators
- Kei KuboHayato OtsukaDaisuke SaekiAyumi Furuse - Shinshu UniversityTakuya HayashiPiotr Kowalczyk - Murdoch University, Centre for Water, Energy and WasteToshio SakaiKatsumi Kaneko - The University of Queensland
- Publication Details
- Chemical Physics Letters, Vol.890, 142741
- Publisher
- Elsevier B.V.
- Number of pages
- 7
- Identifiers
- 991005869906307891
- Copyright
- © 2026 The Authors.
- Murdoch Affiliation
- School of Mathematics, Statistics, Chemistry and Physics; Centre for Water, Energy and Waste
- Resource Type
- Journal article
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