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
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.
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