Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-26T10:00:17.109Z Has data issue: false hasContentIssue false
  • English
  • Français

Novel electrode materials for electrochemical capacitors: Part II. Material characterization of sol-gel-derived and electrodeposited manganese dioxide thin films

Published online by Cambridge University Press:  31 January 2011

Suh-Cem Pang  and
Marc A Anderson
Suh-Cem Pang
Affiliation:
Water Chemistry Program, University of Wisconsin–Madison, Madison, Wisconsin 53706
Marc A Anderson
Affiliation:
Water Chemistry Program, University of Wisconsin–Madison, Madison, Wisconsin 53706
Get access

Abstract

Material characterization of sol-gel-derived and electrodeposited MnO2 thin films showed that their microstructures are highly porous in nature. While sol-gel-derived films are nanoparticulate, electrodeposited films showed macropores of random and irregular platelike structures, comprising much denser surface layers and highly porous underlying layers. On the basis of calculated and theoretical density values of 1 and 4.99 g/cm3, respectively, the porosity of sol-gel-derived MnO2 films was determined to be as high as 80%, which is substantially higher than electrodeposited films at 67%. Apart from their higher specific capacitance, sol-gel-derived MnO2 films appeared to exhibit higher cycling stability and reversibility than electrodeposited MnO2 films. In the case of sol-gel films, thinner films appeared to exhibit higher cycling stability than thicker films. There was less alteration in surface morphology and microstructure, and the rate of loss in charge-storage capacity upon voltammetric cycling was not as significant for sol-gel MnO2 thin films

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 10 , October 2000 , pp. 2096 - 2106
Copyright
Copyright © Materials Research Society 2000

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

1. Pang, S-C., Anderson, M.A., and Chapman, T.W., J. Electrochem. Soc. 147, 444 (2000).Google Scholar
2. Pang, S-C. and Anderson, M.A., in New Materials for Batteries and Fuel Cells, edited by Doughty, D.H., Brack, H-P., Naor, K., and Nagan, L.F. (Mater. Res. Soc. Symp. Proc. 575, Warrendale, PA, 1999), pp. 415–422.Google Scholar
3. Desai, B.D., Fernandes, J.B., and Kamat Dalal, V.N., J. Power Sources 16, 1 (1985).CrossRefGoogle Scholar
4. Ruetschi, P. and Giovanoli, R., J. Electrochem. Soc. 135, 2663 (1988).CrossRefGoogle Scholar
5. Era, , Takehara, A., and Yoshizawa, S., Electrochim. Acta 12, 1199 (1967).CrossRefGoogle Scholar
6. Kozawa, A. and Powers, R.A., J. Electrochem. Soc. 113, 870 (1966).Google Scholar
7. Lee, C.H., Yeager, E., and Cahan, B.D., In Proceeding of the Manganese Dioxide Symposium, Vol. 1, edited by Kozawa, A. and Brodd, R.J. (I.C. Sample Office, OH, 1975), Paper 18, p. 349.Google Scholar
8. Zheng, J.P., Huang, J., and Jow, T.R., J. Electrochem. Soc. 144, 2026 (1997).CrossRefGoogle Scholar
9. Sarangapani, S., Tilak, B.V., and Chen, C.P., J. Electrochem. Soc. 143, 3791 (1996).CrossRefGoogle Scholar
10. Sarangapani, S., Lessner, P., Forchione, J., Griffith, A., and Laconti, A.B., J. Power Sources 29, 355 (1990).CrossRefGoogle Scholar
11. Zheng, J.P., Cygan, P.J., and Jow, T.R., J. Electrochem. Soc. 142, 2699 (1995).CrossRefGoogle Scholar
12. Zheng, J.P. and Jow, T.R., J. Electrochem. Soc. 142, L6 (1995).CrossRefGoogle Scholar
13. Liu, K.C. and Anderson, M.A., in Aqueous Chemistry and Geochemistry of Oxiclear, Oxyhydroxides, and Related Materials, edited by Voight, J.A., Wood, T.E., Bunker, B.C., Casey, W.H., and Crossey, L.H. (Mater. Res. Soc. Symp. Proc. 432, Pittsburgh, PA, 1996), pp. 221–229.Google Scholar
14. Mulvaney, Paul, Cooper, R., and Grieser, F., J. Phys. Chem. 94, 8339 (1990).CrossRefGoogle Scholar
15. Sostaric, J.Z., Mulvaney, P., and Grieser, F., J. Chem. Soc., Faraday Trans. 91, 2843 (1995).CrossRefGoogle Scholar
16. Tench, D. and Warren, L.F., J. Electrochem. Soc. 130, 869 (1983).CrossRefGoogle Scholar
17. Spricis, A.A., Slaidins, G.J., Abele, J.J., and Dzelme, J.R., Elecktrokhimiya 18, 399 (1982).Google Scholar
18. Ord, J.L. and Huang, Z.Q., J. Electrochem. Soc. 132, 1183 (1985).CrossRefGoogle Scholar
19. Wu, B.L., Linot, D., Vedel, J., and Yu, L.T., J. Electroanal. Chem. 420, 159 (1997).CrossRefGoogle Scholar
20. Lopez De Mishima, B.A., Ohtsuka, T., Konno, H., and Sato, N., Electrochim. Acta 36, 1485 (1991).CrossRefGoogle Scholar
21. Lopez De Mishima, B.A., Ohtsuka, T., Konno, H., and Sato, N., Electrochim. Acta 38, 341 (1993).CrossRefGoogle Scholar