Published 1984
| Version v1
Miscellaneous
Influence of cobalt hydroxide addition on the properties of the nickel hydroxide electrode during charge/discharge cycles
Creators
- 1. Universidad Nacional de Tucuman (Argentina). Inst. de Quimica Fisica
- 2. Instituto de Investigaciones Fisicoquimicas Teoricas y Aplicadas, La Plata (Argentina)
Description
Voltametry and open circuit measurements of coprecipitated (nickel+cobalt) hydroxide electrodes, cobalt hydroxide+nickel hydroxide electrodes and nickel hydroxide+cobalt hydroxide electrodes in 0.1 M KOH at 250C were made. Coprecipitated electrodes exhibit an overpotential decrease for the Ni(II)/Ni(III) redox reactions and an overpotential increase for the oxygen evolution reaction. The behaviour of the different electrodes is interpreted in terms of a catalytic effect of the Co(II)/Co(III) reaction on the Ni(II)/Ni(III) reaction through hydroxide ions inserted into the metal hydroxide layer. (C.L.B.)
Abstract (Portuguese)
Foram feitas medidas voltametricas e de circuito aberto, de: eletrodos de hidroxido de (niquel+cobalto) coprecipitado, eletrodos de hidroxido de cobalto+hidroxido de niquel e eletrodos de hidroxido de niquel+hidroxido de cobalto, em 0,1M de KOH a 250C. Os eletrodos coprecipitados apresentam um decrescimo de potencial para as reacoes de oxirreducao Ni(II)/Ni(III) e um aumento de potencial para a reacao com evolucao de oxigenio. O comportamento dos diferentes eletrodos e interpretado em termos do efeito catalitico da reacao Co(II)/Co(III) sobre a reacao Ni(II)/Ni(III) atraves da insercao dos ions hidroxido na camada do hidroxido metalico. (C.L.B.)Additional details
Additional titles
- Original title (no language)
- Anais do 4. Simposio Brasileiro de Eletroquimica e Eletroanalitica.
Publishing Information
- Imprint Title
- Annals of the 4. Brazilian Symposium on Electrochemistry and Electroanalytics
- Imprint Pagination
- 611 p.
- Journal Page Range
- p. 143-148.
- Report number
- INIS-BR--175
Conference
- Title
- 4. Brazilian Symposium on Electrochemistry and Electroanalytics.
- Dates
- 15-18 Apr 1984.
- Place
- Sao Carlos, SP (Brazil).
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 15069405
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CATALYSIS; COBALT HYDROXIDES; COPRECIPITATION; DIAGRAMS; ELECTRODES; NICKEL HYDROXIDES; OXIDATION; REDUCTION; VOLTAMETRY
- Descriptors DEC
- CHEMICAL REACTIONS; COBALT COMPOUNDS; HYDROGEN COMPOUNDS; HYDROXIDES; INFORMATION; NICKEL COMPOUNDS; OXYGEN COMPOUNDS; PRECIPITATION; SEPARATION PROCESSES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- Imprint:Anais do 4. Simposio Brasileiro de Eletroquimica e Eletroanalitica.