Effect of Substituents on the Electrochemical Reversible Discharge Capacity of Cobalt Hydroxide Electrodes

Effect of Substituents on the Electrochemical Reversible Discharge Capacity of Cobalt Hydroxide Electrodes

Thimmasandra Narayan Ramesh 

Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, India

Corresponding Author Email: 
22 June 2014
1 May 2015
30 June 2015
| Citation

Cobalt hydroxide, nickel hydroxide-cobalt hydroxide and zinc oxide-cobalt hydroxide biphasic mixtures were prepared by precipitation method. In spite of structural similarities exhibited by nickel hydroxide and cobalt hydroxide samples, former is a good electrode material and exchanges 1e-/Ni while latter does not show any reversibility. Presence of small amount of other metal ions such as nickel or zinc in the lattice of cobalt hydroxide or as a biphasic mixture of cobalt hydroxide-nickel hydroxide/cobalt hydroxide- zinc oxide, exchange up to 0.2 to 0.24e- exchange compared to pure cobalt hydroxide which shows 0.1 e- exchange.


cobalt hydroxide, biphasic mixture, electrochemical performance, discharge capacity

1. Introduction
2. Experimental
3. Results and Discussion

Author gratefully thank Tumkur University for support and facil-ities. TNR express his deepest gratitude to Prof. P Vishnu Kamath lab, Bangalore University for extending support and for providing lab facilities. TNR gratefully acknowledge Council of Scientific and Industrial Research (CSIR) (project ref: 01/(2741)/13/EMR-II dated 18-04-2013), New Delhi, for the finan-cial support.


[1] S.U. Falk, A.J. Salkind, “Alkaline storage batteries”, John Wiley & Sons, Inc., New York, (1969), p. 125.

[2] J. McBreen, in “Nickel hydroxide, Handbook of Battery Materi-als”, Ed., J. O. Besenhard, Wiley-VCH Verlag GmbH, Wein-heim, Germany, 1998, p. 135.

[3] A.F. Wells, “Structural Inorganic Chemistry” 4th ed. Oxford University Press, London, (1975), p. 142

[4] J. Ismail, M.F. Ahmed, P.V. Kamath, J. Power Sources, 36, 507 (1991).

[5] T.N. Ramesh, P.V. Kamath, C. Shivakumara, J. Electrochem. Soc., 152, 806 (2005)

[6] J. Bauer, D.H. Buss, H.J. Harms, O. Glemser J. Electrochem Soc., 137, 173 (1990).

[7] V. Pralong, A. Delahaye-Vidal, B. Beaudoin, J-B. Leriche, J-M. Tarascon J Electrochem. Soc., 147, 1306 (2000).

[8] R.S. Jayashree , P.V. Kamath, J. Electrochem Soc., 149, A761 (2002).

[9] X.Y. Wang, J. Yan, Y. S. Zhang, H.T. Yuan, D. Y. Song, J. Applied Electrochem., 28, 1377 (1998).

[10] T.N. Ramesh, P.V. Kamath, Electrochimica Acta, 53, 4721 (2008).