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Electrochemical behavior of α-cobalted nickel hydroxide electrodes

✍ Scribed by C. Faure; C. Delmas; P. Willmann

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
554 KB
Volume
36
Category
Article
ISSN
0378-7753

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✦ Synopsis

Cobalt substituted a-mchel hbdroxldes obtamed by prectpltatlon techmques have been used as posltlve electrodes of Nl-Cd battenes As these materials are mdefimtell stable m KOH solutron, the electrochemical cyclmg between (I and y phases allows up to I 3 e-per (NI + Co) atom to be reversibly exchanged at the C/5 rate Nevertheless, dunng long-range cyclmg, a slow evolution from the y/a couple to the ~(lll)l~(II) couple occurs It has been asslgned to a partial reduction of Co3' eons to Co" Ions at the end of the discharge process The evolution of the number of exchanged electrons (NE,?) versus the cobalt amount IS dscussed

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