Journal
RSC ADVANCES
Volume 3, Issue 43, Pages 20261-20266Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra42417k
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Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2011/21227-8]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
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The exceptional stability of FTO electrodes modified with Ni1-xCox(OH)(2) in the alpha polymorphic phase was assigned to Co(II) substitution in the Ni(II) reticule, decreasing the basal plane distances and the average grain size, as confirmed by careful analyses of their X-ray diffractograms and thermal behavior as a function of the cobalt content. That phenomenon can be assigned to thermodynamic rather than kinetic factors, reflected by much higher dehydration/dehydroxilation temperatures, as expected for the stabilization of the mixed alpha-phase hydroxides in detriment of the oxides, opening real perspectives for application of alpha-Ni1-xCox(OH)(2) in high efficiency batteries and devices.
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