Premium
Highly Ordered Mesoporous Cobalt Oxide Nanostructures: Synthesis, Characterisation, Magnetic Properties, and Applications for Electrochemical Energy Devices
Author(s) -
Wang Guoxiu,
Liu Hao,
Horvat Josip,
Wang Bei,
Qiao Shizhang,
Park Jinsoo,
Ahn Hyojun
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201000562
Subject(s) - mesoporous material , materials science , cobalt oxide , supercapacitor , transmission electron microscopy , cobalt , nanoparticle , nanostructure , chemical engineering , nanotechnology , electrode , mesoporous organosilica , mesoporous silica , electrochemistry , chemistry , catalysis , biochemistry , engineering , metallurgy
Highly ordered mesoporous Co 3 O 4 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 N 2 adsorption–desorption isotherm analysis. Both KIT‐6 cubic and SBA‐15 hexagonal mesoporous Co 3 O 4 samples exhibited a low Néel temperature and bulk antiferromagnetic coupling due to geometric confinement of antiferromagnetic order within the nanoparticles. Mesoporous Co 3 O 4 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.