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

fYear

1990

fDate

25-28 Jun 1990

Firstpage

17

Lastpage

21

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Sources Symposium, 1990., Proceedings of the 34th International

Conference_Location

Cherry Hill, NJ

Print_ISBN

0-87942-604-7

Type

conf

DOI

10.1109/IPSS.1990.145780

Filename

145780