Determination of transport and electrochemical kinetic parameters of bare and copper-coated LaNi{sub 4.27}Sn{sub 0.24} electrodes in alkaline solution

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1836545· OSTI ID:220862

Zheng, G; Popov, B N; White, R E ^[1]

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1. Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering

Electrochemical properties of bare and copper-coated LaNi{sub 4.27}Sn{sub 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{sub 4.27}Sn{sub 0.24} was estimated to be 6.75 {times} 10{sup {minus}11} cm{sup 2}/s.

• Sponsoring Organization: USDOE
• OSTI ID: 220862
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 3 Vol. 143; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ABSORPTION
COATINGS
COPPER
DESORPTION
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
HYDRIDES
HYDROGEN
LANTHANUM ALLOYS
NICKEL ALLOYS
PH VALUE
TIN ALLOYS