Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-23T02:48:55.870Z Has data issue: false hasContentIssue false
  • English
  • Français

ESR study of activated carbon fibers: preliminary results

Published online by Cambridge University Press:  03 March 2011

S.L. di Vittorio ,
A. Nakayama ,
T. Enoki ,
M.S. Dresselhaus ,
M. Endo  and
N. Shindo
S.L. di Vittorio
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
A. Nakayama
Affiliation:
Department of Chemistry, Tokyo Institute of Technology, Ookayama, Tokyo, Japan
T. Enoki
Affiliation:
Department of Chemistry, Tokyo Institute of Technology, Ookayama, Tokyo, Japan
M.S. Dresselhaus
Affiliation:
Department of Electrical Engineering and Computer Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
M. Endo
Affiliation:
Department of Electrical Engineering, Faculty of Engineering, Shinshu University, Nagano 380, Japan
N. Shindo
Affiliation:
Osaka Gas Company, Central Research Laboratory, Torishima, Konohana-ku, Osaka 554, Japan
Get access

Abstract

We have carried out Electron Spin Resonance (ESR) measurements on activated carbon fibers (ACF) with specific surface areas (SSA) of 3000 and 2000 m2/g. The ESR spectrum of ACF fibers in air is extremely broad (500 to 1000 Gauss), and the spin susceptibility decreases rapidly with decreasing specific surface area. Also measured was the ESR signal of the desorbed fibers in vacuum. As a result of desorption, the broad peak decreases slightly in intensity, and a narrow (≍65 Gauss at room temperature) peak appears. We report results on the temperature dependence of both peaks. The narrow peak is interpreted as due to spins associated with dangling bonds, whereas we attribute the broad peak to the conduction carrier spins which is broadened by the boundary scattering process (T1 contribution) and the dipolar broadening process (T2 contribution) associated with the dangling bond spins.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 9 , September 1993 , pp. 2282 - 2287
Copyright
Copyright © Materials Research Society 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Kuwabara, H., Suzuki, T., and Kaneko, K., J. Chem. Soc. Faraday Trans. 87, 1915 (1991).CrossRefGoogle Scholar
2Fryer, J. R., Carbon 19, 431 (1981).CrossRefGoogle Scholar
3Fung, A. and Dresselhaus, M. S., J. Mater. Res. 8, 1875 (1993).CrossRefGoogle Scholar
4Dresselhaus, M. S., Fung, A. W. P, Rao, A. M., di Vittorio, S. L., Kuriyama, K., Dresselhaus, G., and Endo, M., Carbon 30, 1065 (1992).CrossRefGoogle Scholar
5Huttepain, M. and Oberlin, A., Carbon 28, 103 (1990).CrossRefGoogle Scholar
6Bansal, R. P., Donnet, J-B., and Stoeckli, F., Active Carbon (Marcel Dekker, New York, 1988).Google Scholar
7Fung, A. W. P., Rao, A. M., Kuriyama, K., Dresselhaus, M. S., Dresselhaus, G., and Endo, M., in Abstracts of the 20th Biennial Conference on Carbon, Santa Barbara, CA, p. 296 (1991).Google Scholar
8Kuriyama, K. and Dresselhaus, M. S., J. Mater. Res. 6, 1040 (1991).CrossRefGoogle Scholar
9Mrozowski, S., J. Low Temp. Phys. 35, 231 (1979).CrossRefGoogle Scholar
10Wagoner, G., Phys. Rev. 118, 647 (1960).CrossRefGoogle Scholar
11Marshik, B., Apple, T., Meyer, D., Wagoner, G., and Woollam, J. A., in Extended Abstracts No. 8, Graphite Intercalation Compounds, edited by Dresselhaus, M. S., Dresselhaus, G., and Solin, S. A. (Materials Research Society, Pittsburgh, PA, 1986), p. 120.Google Scholar
12Shindo, N., Tai, K., and Matsumura, Y., Chem. Eng., January, 28 (1987).Google Scholar
13Tanahashi, I., Yoshida, A., and Nishino, A., J. Appl. Electrochem. 21, 28 (1991).CrossRefGoogle Scholar
14Mrozowski, S., Proceedings of the 5th Carbon Conference (Pergamon Press, New York, 1963), Vol. 2.Google Scholar
15Bright, A. A. and Singer, L. S., Carbon 17, 59 (1979).CrossRefGoogle Scholar
16Dyson, F. J., Phys. Rev. 98, 349 (1955).CrossRefGoogle Scholar
17Dresselhaus, M. S., Dresselhaus, G., Sugihara, K., Spain, I. L., and Goldberg, H. A., Graphite Fibers and Filaments, Springer Series in Materials Science (Springer-Verlag, Berlin, 1988), Vol. 5.CrossRefGoogle Scholar
18Elliott, R. J., Phys. Rev. 96, 266 (1954).CrossRefGoogle Scholar
19Yafet, Y., Solid State Physics, edited by Seitz, F. and Turnbull, D. (Academic Press, New York, 1963), Vol. 14.Google Scholar
20Sugihara, K., J. Phys. Soc. Jpn. 53, 393 (1984).CrossRefGoogle Scholar
21Nakayama, A., unpublished.Google Scholar
22Armstrong, J., Jackson, C., and Marsh, H., Carbon 2, 239 (1964).CrossRefGoogle Scholar
23Waller, Z., Z. Phys. 79, 370 (1932).CrossRefGoogle Scholar