Abstract
The conversion of wood-based fiberboard materials into crack-free, monolithic, porous hard carbons is of significant interest due to their ability to perform in a multifunctional capacity. Three varieties of carbonized medium-density fiberboard (c-MDF) were studied for electrical, mechanical, and structural properties. X-ray diffraction data suggested that the volume fraction of large turbostratic crystallites increased with carbonization temperature (Tcarb). The volume fraction of large turbostratic crystallites had a positive correlation with elastic modulus and electrical conductivity. The c-MDF materials were approximately isotropic with respect to elastic modulus and exhibited increasing stiffness with increasing Tcarb (up to 4.5 GPa). Between 600 and 1400 °C, the electrical resistivity of c-MDF varied by seven orders of magnitude. The electrical resistivity of the hard carbon material in c-MDF 1400 °C was found to be within about an order of magnitude of polycrystalline graphite.
Original language | English |
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Pages (from-to) | 1321-1330 |
Number of pages | 10 |
Journal | Carbon |
Volume | 40 |
Issue number | 8 |
DOIs | |
State | Published - Jul 2002 |
Externally published | Yes |
Funding
Financial support for this research came, in part, from a Johns Hopkins Applied Physics Laboratory Graduate Fellowship.
Funders | Funder number |
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Johns Hopkins University Applied Physics Laboratory |
Keywords
- A. Char, Porous carbon
- B. Pyrolysis
- D. Electrical (electronic) properties, Mechanical properties