Determination of Transport and Electrochemical Kinetic Parameters of Bare and Copper-Coated LaNi_4.27Sn_0.24 Electrodes in Alkaline Solution

Author(s)

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

Document Type

Article

Subject Area(s)

Chemical Engineering

Abstract

Electrochemical properties of bare and copper-coated LaNi_4.27Sn_0.24 electrodes were investigated in alkaline solution. The exchange current density, polarization resistance, and equilibrium potential were determined as functions of the state of charge in the electrodes. The symmetry factors for bare and copper-coated electrodes were estimated to be 0.53 and 0.52, respectively. By using a constant current discharge technique, the hydrogen diffusion coefficient in bare and coated LaNi_4.27Sn_0.24 was estimated to be 6.75 × 10^–11 cm²/s.

Publication Info

Journal of the Electrochemical Society, 1996, pages 834-839.

Rights

© The Electrochemical Society, Inc. 1996. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in the Journal of the Electrochemical Society.

http://www.electrochem.org/

Publisher's link: http://dx.doi.org/10.1149/1.1836545

DOI: 10.1149/1.1836545