DOI: 10.1557/jmr.1992.1788. Structural characterization of heat-treated activated carbon fibers

Structural characterization of heat-treated activated carbon fibers

10.1557/jmr.1992.1788

Crossref journal-article

Springer Science and Business Media LLC

Journal of Materials Research (297)

Abstract

Raman scattering, x-ray diffraction, and BET measurements are used to study the effect of heat treatment on the microstructure of activated carbon fibers (ACFs) and to correlate the structural changes with the metal-insulator transition observed in the electronic transport properties of heat-treated ACFs. A sequence of events is identified, starting with desorption, followed by micropore collapse plus the stacking of basic structural units in the c-direction, and ending up with in-plane crystallization. The graphitization process closely resembles that depicted by Oberlin's model, except that the final material at high-temperature heat treatment remains turbostratic. Because the metal-insulator transition was observed to occur at heat-treatment temperature THT ≃ 1200 °C, which is well below the THT value (2000 °C) for in-plane crystallization, we conclude that this electronic transition is not due to in-plane ordering but rather to the collapse of the micropore structure in the ACFs. Raman scattering also provides strong evidence for the presence of local two-dimensional graphene structures, which is the basis for the transport phenomena observed in heat-treated ACFs.

Bibliography

Rao, A. M., Fung, A. W. P., Dresselhaus, M. S., & Endo, M. (1992). Structural characterization of heat-treated activated carbon fibers. Journal of Materials Research, 7(7), 1788â1794.

Authors 4

A.M. Rao (first)
A.W.P. Fung (additional)
M.S. Dresselhaus (additional)
M. Endo (additional)

References 21 Referenced 60

10.1016/0008-6223(90)90338-Y
10.1007/978-3-642-83379-3
10.1557/JMR.1992.0940
10.1016/0008-6223(84)90086-1
{'key': 'S0884291400017301_ref011', 'first-page': '241', 'volume': '54', 'author': 'Tanaka', 'year': '1987', 'journal-title': 'Fuel and Combustion'} / Fuel and Combustion by Tanaka (1987)
10.1063/1.1674108
10.1007/BF01103825
{'key': 'S0884291400017301_ref006', 'first-page': '296', 'volume-title': 'Extended Abstracts of the 20th Biennial Conference on Carbon,', 'author': 'Fung', 'year': '1991'} / Extended Abstracts of the 20th Biennial Conference on Carbon, by Fung (1991)
10.1016/0379-6779(89)90468-2
{'key': 'S0884291400017301_ref021', 'volume-title': 'Active Carbon: Manufacture, Properties and Applications', 'author': 'Smíšek', 'year': '1967'} / Active Carbon: Manufacture, Properties and Applications by Smíšek (1967)
10.1557/JMR.1991.0778
10.1557/JMR.1991.1040
{'key': 'S0884291400017301_ref003', 'first-page': '335', 'volume-title': 'Defects in Materials,', 'author': 'Fung', 'year': '1991'} / Defects in Materials, by Fung (1991)
{'key': 'S0884291400017301_ref005', 'first-page': '242', 'volume-title': 'Extended Abstracts of the 20th Biennial Conference on Carbon,', 'author': 'Rao', 'year': '1991'} / Extended Abstracts of the 20th Biennial Conference on Carbon, by Rao (1991)
{'key': 'S0884291400017301_ref007', 'first-page': '300', 'volume-title': 'Extended Abstracts of the 20th Biennial Conference on Carbon,', 'author': 'Kuriyama', 'year': '1991'} / Extended Abstracts of the 20th Biennial Conference on Carbon, by Kuriyama (1991)
10.1103/PhysRevB.26.5867
13. Vittorio S. L. di , Dresselhaus M. S. , Enoki T. , Endo M. , and Nakajima T. (unpublished).
10.1080/00018738100101367
10.1007/3540115137_2
10.1557/JMR.1989.0385
10.1107/S0021889887009427

Dates

Type	When
Created	17 years, 10 months ago (Sept. 27, 2007, 6:41 a.m.)
Deposited	4 years, 6 months ago (Feb. 24, 2021, 4:43 p.m.)
Indexed	6 days, 3 hours ago (Aug. 19, 2025, 6:57 a.m.)
Issued	33 years, 1 month ago (July 1, 1992)
Published	33 years, 1 month ago (July 1, 1992)
Published Online	14 years, 6 months ago (Jan. 31, 2011)
Published Print	33 years, 1 month ago (July 1, 1992)

Funders 0

None

BibTeX

@article{Rao_1992, title={Structural characterization of heat-treated activated carbon fibers}, volume={7}, ISSN={2044-5326}, url={http://dx.doi.org/10.1557/jmr.1992.1788}, DOI={10.1557/jmr.1992.1788}, number={7}, journal={Journal of Materials Research}, publisher={Springer Science and Business Media LLC}, author={Rao, A.M. and Fung, A.W.P. and Dresselhaus, M.S. and Endo, M.}, year={1992}, month=jul, pages={1788–1794} }

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