Strategies for synthesizing conductive spinel cobalt oxide nanoparticles for energy storage applications batteries and energy storage
Language
en
Article de revue
This item was published in
Journal of The Electrochemical Society. 2012, vol. 159, n° 12, p. A1934-A1940
Electrochemical Society
English Abstract
Co3O4 spinel type nanoparticles (5-10 nm) were synthesized by oxidizing precipitation in various basic solutions. The materials prepared in lithium-containing hydroxide solutions exhibit high electronic conductivity (higher ...Read more >
Co3O4 spinel type nanoparticles (5-10 nm) were synthesized by oxidizing precipitation in various basic solutions. The materials prepared in lithium-containing hydroxide solutions exhibit high electronic conductivity (higher than 10−2 S.cm−1 at room temperature), which can be increased (up to 3 S.cm−1) by electrochemical oxidation. This high conductivity is due to the presence of Co4+ ions in the octahedral framework of the spinel structure, which entails electronic delocalization. In addition to high conductivity, the obtained powder exhibits a high surface area (around 200 m2.g−1), which should be suitable for applications in electrodes: as conductive additive in the positive electrode of alkaline Ni-MH cells, or directly as electrode material in hybrid C/metal oxide supercapacitors.Read less <
Italian Keywords
Spinel
Cobalt oxide
Batteries
Origin
Hal imported