Highly Ordered Mesoporous Cobalt Oxide Nanostructures: Synthesis, Characterisation, Magnetic Properties, and Applications for Electrochemical Energy Devices | Zendy

Wang Guoxiu | Zendy; Liu Hao | Zendy; Horvat Josip | Zendy; Wang Bei | Zendy; Qiao Shizhang | Zendy; Park Jinsoo | Zendy; Ahn Hyojun | Zendy

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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.

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