skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Mass transfer and kinetic phenomena at the nickel hydroxide electrode

Abstract

Thin-film (10 to 40 nm thickness) nickel hydroxide intercalation electrodes were constructed using an electroprecipitation technique. Cyclic voltammetry, potentiostatic step, and galvanostatic discharge experiments were performed and interpreted in terms of a macroscopic model treating the simultaneous mass transfer, kinetic, and thermodynamic phenomena occurring within the cell. The side reaction, oxygen evolution, exhibited irreversible Tafel behavior, with a proton concentration-dependent exchange current density of 4.5 {times} 10{sup {minus}9} [(c{sub 0} {minus} c)/c{sub 0}] A/cm{sup 2} on pure nickel hydroxide films, and a constant exchange current density of 4.5 {times} 10{sup {minus}9} A/cm{sup 2} on cobalt hydroxide-containing nickel hydroxide films. The apparent anodic transfer coefficient for the oxygen reaction is 0.49 on pure nickel hydroxide films and 0.42 on cobalt hydroxide-containing nickel hydroxide films. The apparent anodic transfer coefficient for the oxygen reaction is 0.49 on pure nickel hydroxide films and 0.42 on cobalt hydroxide-containing nickel hydroxide films. The intercalation reaction is described with a Butler-Volmer-type expression with a large, proton concentration-dependent exchange current density of 9.5 {times} 10{sup {minus}2} [c(c{sub 0} {minus} c)]{sup 1/2} A/cm{sup 2}, and anodic and cathodic apparent transfer coefficients of 0.5 for both electrode types. Here c and c{sub 0} have units of mol/cm{sup 3}. Themore » proton diffusion coefficient in pure nickel hydroxide was found to depend on the proton concentration, with values ranging from 1.2 {times} 10{sup {minus}13} to 1.9 {times} 10{sup {minus}12} cm{sup 2}/s, with a concentration-averaged value of 3.417 {times} 10{sup {minus}13} cm{sup 2}/s. In cobalt hydroxide-containing nickel hydroxide, the values ranged from 2 {times} 10{sup {minus}13} to 1.9 {times} 10{sup {minus}12} cm{sup 2}/s, with a concentration-averaged value of 8.402 {times} 10{sup {minus}13} cm{sup 2}/s.« less

Authors:
;  [1]
  1. Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technologies Div.
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
289398
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 145; Journal Issue: 11; Other Information: PBD: Nov 1998
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; NICKEL HYDROXIDES; ELECTRODES; MASS TRANSFER; THERMODYNAMICS; CHEMICAL REACTION KINETICS; REDOX REACTIONS; COBALT HYDROXIDES

Citation Formats

Ta, K P, Newman, J, and Univ. of California, Berkeley, CA. Mass transfer and kinetic phenomena at the nickel hydroxide electrode. United States: N. p., 1998. Web. doi:10.1149/1.1838886.
Ta, K P, Newman, J, & Univ. of California, Berkeley, CA. Mass transfer and kinetic phenomena at the nickel hydroxide electrode. United States. https://doi.org/10.1149/1.1838886
Ta, K P, Newman, J, and Univ. of California, Berkeley, CA. 1998. "Mass transfer and kinetic phenomena at the nickel hydroxide electrode". United States. https://doi.org/10.1149/1.1838886.
@article{osti_289398,
title = {Mass transfer and kinetic phenomena at the nickel hydroxide electrode},
author = {Ta, K P and Newman, J and Univ. of California, Berkeley, CA},
abstractNote = {Thin-film (10 to 40 nm thickness) nickel hydroxide intercalation electrodes were constructed using an electroprecipitation technique. Cyclic voltammetry, potentiostatic step, and galvanostatic discharge experiments were performed and interpreted in terms of a macroscopic model treating the simultaneous mass transfer, kinetic, and thermodynamic phenomena occurring within the cell. The side reaction, oxygen evolution, exhibited irreversible Tafel behavior, with a proton concentration-dependent exchange current density of 4.5 {times} 10{sup {minus}9} [(c{sub 0} {minus} c)/c{sub 0}] A/cm{sup 2} on pure nickel hydroxide films, and a constant exchange current density of 4.5 {times} 10{sup {minus}9} A/cm{sup 2} on cobalt hydroxide-containing nickel hydroxide films. The apparent anodic transfer coefficient for the oxygen reaction is 0.49 on pure nickel hydroxide films and 0.42 on cobalt hydroxide-containing nickel hydroxide films. The apparent anodic transfer coefficient for the oxygen reaction is 0.49 on pure nickel hydroxide films and 0.42 on cobalt hydroxide-containing nickel hydroxide films. The intercalation reaction is described with a Butler-Volmer-type expression with a large, proton concentration-dependent exchange current density of 9.5 {times} 10{sup {minus}2} [c(c{sub 0} {minus} c)]{sup 1/2} A/cm{sup 2}, and anodic and cathodic apparent transfer coefficients of 0.5 for both electrode types. Here c and c{sub 0} have units of mol/cm{sup 3}. The proton diffusion coefficient in pure nickel hydroxide was found to depend on the proton concentration, with values ranging from 1.2 {times} 10{sup {minus}13} to 1.9 {times} 10{sup {minus}12} cm{sup 2}/s, with a concentration-averaged value of 3.417 {times} 10{sup {minus}13} cm{sup 2}/s. In cobalt hydroxide-containing nickel hydroxide, the values ranged from 2 {times} 10{sup {minus}13} to 1.9 {times} 10{sup {minus}12} cm{sup 2}/s, with a concentration-averaged value of 8.402 {times} 10{sup {minus}13} cm{sup 2}/s.},
doi = {10.1149/1.1838886},
url = {https://www.osti.gov/biblio/289398}, journal = {Journal of the Electrochemical Society},
number = 11,
volume = 145,
place = {United States},
year = {Sun Nov 01 00:00:00 EST 1998},
month = {Sun Nov 01 00:00:00 EST 1998}
}