Electrochemical Investigations of Bare and Pd-Coated LaNi_4.25Al_0.75 Electrodes in Alkaline Solution

Author(s)

G. Zheng, University of South Carolina - Columbia
Branko Popov, University of South Carolina - ColumbiaFollow
Ralph E. White, University of South Carolina - ColumbiaFollow

Document Type

Article

Abstract

Electrochemical investigations were carried out on electrodes made from both bare and Pd-coated LaNi4.25Al0.75 particles. Experimental results showed that the Pd-coating significantly decreases the electrode resistance and increases the electrode discharge capacity. The electrochemical impedance spectroscopy technique was used to determine various resistive components in the electrodes and electrolyte by fitting an equivalent circuit to the experimental data. The results indicated that an electrode made from the Pd-coated alloy has much less ohmic resistance (particle-to-particle contact resistance and current collector to electrode pellet contact resistance) compared to the electrodes made from bare alloy.

Publication Info

Published in Journal of Applied Electrochemistry, Volume 28, Issue 4, 1998, pages 381-385.

Copyright Springer, 1998.

Zheng, G., Popov, B. N., & White, R. E. (1 March 1998). Electrochemical Investigations of Bare and Pd-Coated LaNi_4.75Al_0.75 Electrodes in Alkaline Solution. Journal of Applied Electrochemistry, 28 (4). 381 – 385. http://dx.doi.org/10.1023/A:1003236321297

Rights

Copyright Springer, 1998.

Zheng, G., Popov, B. N., & White, R. E. (1 March 1998). Electrochemical Investigations of Bare and Pd-Coated LaNi_4.75Al_0.75 Electrodes in Alkaline Solution. Journal of Applied Electrochemistry, 28 (4). 381 – 385. http://dx.doi.org/10.1023/A:1003236321297