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

被引：136

作者：

Wang, Guoxiu ^{[1
]}

Liu, Hao ^{[2
,3
]}

Horvat, Josip ^{[2
,3
]}

Wang, Bei ^{[1
]}

Qiao, Shizhang ^{[4
]}

Park, Jinsoo ^{[5
]}

Ahn, Hyojun ^{[5
]}

机构：

[1] Univ Technol Sydney, Dept Chem & Forens Sci, Sydney, NSW 2007, Australia

[2] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[3] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

[4] Univ Queensland, ARC Ctr Excellence Funct Nanomat, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

[5] Gyeongsang Natl Univ, Sch Mat Sci & Engn, Jinju 660701, Gyeongnam, South Korea

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2010年 / 16卷 / 36期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

cobalt; fuel cells; lithium ion battery; magnetic properties; mesoporous materials; supercapacitor; CO3O4; NANOTUBES; SURFACTANT; NANOWIRES; ELECTRODE; BETA-MNO2; DESIGN; SILICA;

D O I：

10.1002/chem.201000562

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 N-2 adsorption-desorption isotherm analysis. Both KIT-6 cubic and SBA-15 hexagonal mesoporous Co3O4 samples exhibited a low Neel 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 rnAhg(-1) with an excellent cycle life. They also exhibited a high specific capacitance of 370 Fg(-1) as electrodes in supercapacitors.

引用

页码：11020 / 11027

页数：8

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