International Journal of Hydrogen Energy, Vol.24, No.10, 973-980, 1999
Impedance studies of nickel hydroxide microencapsulated by cobalt
Nickel hydroxide is used as an active material in pasted-type nickel hydroxide electrodes for rechargeable alkaline batteries. The electrochemical impedance spectroscopes of different nickel hydroxide electrodes were measured. The results were analyzed using a standard equivalent circuit model including a Warburg impedance term. The Nyquist plots were used to interpret the characteristics of the different electrodes. The nickel hydroxide electrode deposited by cobalt has shown lower charge transfer resistance and higher electronic and protonic conductivity.