Abstract
Copper sulfide Cu2−xS is a model mineral for chalcogenides because of the existence of a non-stoichiometric compounds series in the range Cu2S - CuS in which properties change with x. For this reason, we have studied the influence of the mineral composition on the diffusion in this solid.
Electrochemical Impedance Spectroscopy (EIS) applied to Cu2-xS/cupric sulfate electrolyte was the main investigation technique. It enabled us to work at the equilibrium potential at which the composition is fixed and known. Changing the composition by electrochemically removing (or adding) a known amount of Cu, we were able to determine the chemical diffusion coefficient of copper in the composition range (from x=0 to 0.066). In this work, we present the results obtained in the chalcocite and djurleite phases. These results were compared to other values reported in the literature. From this systematic study we discuss various diffusion mechanisms. Our observations support that in chalcocite and djurleite Cu diffuses via a vacancy mechanism.
Similar content being viewed by others
5. References
M.D. Pritzker, R.H. Yoon, C. Basilio, et al., Can. Metall. Quart.24, 27 (1985).
J.A. Mielczarski, Rocz. Chem.59, 917 (1976).
J.O. Leppinen, C.I. Basilio, R.H. Yoon, Int. J. Miner. Process26, 259 (1989).
C.A. Young, C.I. Basilio, R.H. Yoon, Int. J. Miner. Process31, 265 (1991).
I. Persson, J. Coord. Chem.32, 261 (1994).
A.G. Stanley, in: Current topics in photovoltaics, Academic press (New York), Vol. 5 (1975).
W.D. Gill, R.H. Bube, J. Appl. Phys.41, 3731 (1970).
W. Arndt, G. Bilger, G.H. Hewig, et al., in: 2nd E.C. Photov. Solar Energy Conf. (K.V. Overstreaten, Ed.) Berlin, 1979, p. 826.
J. Vedel, P. Covache, D. Lincot, in: 4th E.C. Photov. Solar Energy Conf. (W.H. Bloss, Ed.) Stresa, 1981, p. 822.
J.B. Wagner Jr., in: Mass transport in oxides (J.B. Watchman Jr. and A.D. Franklin, Ed.) Special publication no. 296, 65 (1965).
C. Wagner, J. Chem. Phys.21, 1819 (1953).
J.B. Wagner Jr., C. Wagner, J. Chem. Phys.26, 1602 (1957).
J.C.W. Folmer, F. Jellinek, J. Less-Common Metal.76, 153 (1980).
J.C.W. Folmer, Thesis of the Rijksuniversiteit (1981).
J. Leloup, A. Ruaudel-Texier, A. Barraud, et al., Appl. Surf. Sci.68, 231 (1993).
S. Sanchez, S. Cassaignon, J. Vedel, et al., Electrochim. Acta41, 1331 (1996).
E. Hirahara, J. Phys. Soc. Jpn.6, 422 (1951).
T. Kamaigachi, J. Sci. Hirosh. Univer.A16, 325 (1952).
H. Luquet, F. Guastavino, J. Bougnot, et al., Mater. Res. Bull.7, 955–962 (1972).
R.W.I. Potter II, H.T. Evans Jr., J. Res. US Geol. Survey4, 205 (1976).
H.T. Evans Jr., Z. Krist.150, 299 (1979).
H.T. Evans Jr., Amer. Miner.66, 807 (1981).
N. Morimoto, K. Koto, Y. Shimazaki, Amer. Miner.54, 1256 (1969).
K. Koto, N. Morimoto, Acta Cryst.B26, 915 (1970).
N. Morimoto, K. Koto, Amer. Miner.55, 106 (1970).
R.W. Potter II, Geol. Soc. Amer. Bull.6, 915 (1974).
I. Oftedal, Z. Krist.83, 9 (1932).
H.T. Evans Jr., J.A. Konnert, Amer. Miner.61, 996 (1976).
Ohmasa, Miner. J. (Jap)8, 311 (1977).
H.J. Gotsis, A.C. Barnes, P. Strange, J. Phys.-Condens. Matter4, 10461 (1992).
N.W. Buerger, Econ. Geol.36, 19 (1941).
E.H. Roseboom Jr., Amer. Miner.47, 1181 (1962).
H.J. Mathieu, H. Rickert, Z. Phys. Chem. (Neue Folge)79, 315 (1972).
R.W. Potter II, Econ. Geol.72, 1524 (1977).
D.F.A. Koch, R.J. McIntyre, J. Electroanal. Chem.71, 285 (1976).
J.S. Hanson, D.W. Fuerstenau, in: Flotation of sulfide minerals (K.S.E. Forssberg, Ed.) Elsevier, 1991, p. 33–47.
H. Gomez-Meier, J. Vedel, R. Cordova, et al., J. Electroanal. Chem.388, 81 (1995).
L.H. Allen, E. Buhks, J. Appl. Phys.56, 327 (1984).
S. Cassaignon, Thesis of the University Pierre et Marie Curie (Paris VI) (1998).
S. Cassaignon, S. Sanchez, J. Vedel, et al., to be published.
E. Castel, Thesis of the University Pierre et Marie Curie (Paris VI)(1977).
H. Rickert, H.D. Wiemhöfer, Solid States Ionics11, 257 (1983).
H. Rickert, H.D. Wiemhöfer, Ber. Bunsenges. Phys. Chem.87, 236 (1983).
U. Tinter, H.D. Wiemhöfer, Solid State Ionics9&10, 1213 (1983).
T. Pauporté, J. Vedel, Solid State Ionics, in press, (1998).
C. Ho, I.D. Raistrick, R.A. Huggins, J. Electrochem. Soc.127, 343 (1980).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cassaignon, S., Pauporté, T., Guillemoles, J.F. et al. Copper diffusion in copper sulfide: a systematic study. Ionics 4, 364–371 (1998). https://doi.org/10.1007/BF02375879
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02375879