Abstract
Scanning tunnelling microscopy (STM) has been used to study isotropic pitch-based carbon fibres before and after steam activation. The results show that the present carbon fibre precursor exhibits a particulate surface which is very favourable for the formation of activated carbon fibre. After activation, the carbon fibre surface becomes much more porous and rougher, and the mesopores are evidently present on the surface. Because the scale is down to atomic resolution, the STM observations offer direct evidence for the existence of micropores on the surface of the activated carbon fibres. In addition, the surface textures of both fibres are presented and discussed.
Original language | English |
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Pages (from-to) | 2950-2954 |
Number of pages | 5 |
Journal | Journal of Materials Science |
Volume | 28 |
Issue number | 11 |
DOIs | |
State | Published - Jan 1993 |
Externally published | Yes |