Title :
Fundamental studies on the metal chloride cathodes in sodium batteries
Author :
Ratnakumar, B.V. ; Attia, A. ; Halpert, G.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The authors report studies of the passivation of the NiCl2 electrode during reduction, its effect on the electrochemical rate kinetics for the reduction, and its dependence on the state of charge of the electrode. NiCl2 exhibits passive behavior more readily at lower states of charge due to a decrease in the electrochemical area, resulting from NaCl deposited during reduction. The passive behavior is evident from the DC polarization curves as well as AC impedance plots at the same potentials, implying a correlation between them. The results of the studies are presented in detail
Keywords :
electrochemical electrodes; nickel compounds; passivation; polarisation; reduction (chemical); secondary cells; sodium; testing; AC impedance plots; DC polarization curves; Na-NiCl2; NiCl2; charge; electrochemical rate kinetics; electrode; passivation; passive behavior; reduction; secondary cells; testing; Batteries; Cathodes; Electrodes; Kinetic theory; Laboratories; Nickel; Passivation; Propulsion; Temperature; Voltage;
Conference_Titel :
Power Sources Symposium, 1990., Proceedings of the 34th International
Conference_Location :
Cherry Hill, NJ
Print_ISBN :
0-87942-604-7
DOI :
10.1109/IPSS.1990.145780
