Originall conductive nano-Co<sub>3</sub>O<sub>4</sub> investigated as electrode material for hybrid supercapacitors
TABERNA, Pierre-Louis.
Centre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
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Centre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
TABERNA, Pierre-Louis.
Centre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
< Reduce
Centre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
Language
en
Article de revue
This item was published in
Electrochemical and Solid-State Letters. 2011, vol. 14, n° 10, p. A139-A142
Electrochemical Society
English Abstract
Cobalt<sup> </sup>oxides have been extensively used as conductive additives for Ni-MH<sup> </sup>batteries. We report in this paper the performances of an<sup> </sup>original nanometric cobalt oxide, close to Co<sub>3</s ...Read more >
Cobalt<sup> </sup>oxides have been extensively used as conductive additives for Ni-MH<sup> </sup>batteries. We report in this paper the performances of an<sup> </sup>original nanometric cobalt oxide, close to Co<sub>3</sub>O<sub>4</sub>, as electrode material<sup> </sup>for hybrid supercapacitors. This spinel type phase contains hydrogen, lithium,<sup> </sup>cobalt vacancies, and especially Co<sup>4+</sup> ions within the structure, leading<sup> </sup>to a high electronic conductivity. Cyclic voltammetry and impedance spectroscopy<sup> </sup>measurements show interesting capacitance (320 F/g in 8M-KOH), as well<sup> </sup>as good electrochemical cycling with a small amount of carbon<sup> </sup>black (5%).Read less <
English Keywords
Cobalt compounds
Electrical conductivity
Electrochemical electrodes
Electrochemical impedance spectroscopy
Nanofabrication
Nanoparticles
Vacancies
Crystal
Voltammetry
Origin
Hal imported