Highly ordered mesoporous cobalt oxide nanostructures: synthesis, characterisation, magnetic properties, and applications for electrochemical energy devices

Authors

Guoxiu Wang, University of Technology SydneyFollow
Hao Liu, University of WollongongFollow
Josip Horvat, University of WollongongFollow
Bei Wang, University of Technology SydneyFollow
Shizhang Qiao, Univ Queensland, ARC Ctr Excellence
Jinsoo Park, Gyeongsang National University, KoreaFollow
HyoJun Ahn, Gyeongsang National University Republic of Korea

RIS ID

33992

Publication Details

Wang, G., Ahn, H., Park, J., Liu, H., Qiao, S., Horvat, J. and Wang, B. (2010). Highly ordered mesoporous cobalt oxide nanostructures: synthesis, characterisation, magnetic properties, and applications for electrochemical energy devices. Chemistry - A European Journal, 16 (36), 11020-11027.

Abstract

Highly ordered mesoporous Co₃O₄ nanostructures were prepared using KIT-6 and SBA-15 silica as hard templates. The structures were confirmed by small angle X-ray diffraction, high resolution transmission electron microscopy, and N₂ adsorption–desorption isotherm analysis. Both KIT-6 cubic and SBA-15 hexagonal mesoporous Co₃O₄ samples exhibited a low Néel temperature and bulk antiferromagnetic coupling due to geometric confinement of antiferromagnetic order within the nanoparticles. Mesoporous Co₃O₄ electrode materials have demonstrated the high lithium storage capacity of more than 1200 mAh g⁻¹ with an excellent cycle life. They also exhibited a high specific capacitance of 370 F g⁻¹ as electrodes in supercapacitors.