Hierarchical Hollow Co9S8 Microspheres: Solvothermal Synthesis, Magnetic, Electrochemical, and Electrocatalytic Properties

被引：182

作者：

Zhou, Yu-Xue ^{[1
,3
]}

Yao, Hong-Bin ^{[1
]}

Wang, Yi ^{[2
]}

Liu, Hui-Li ^{[1
]}

Gao, Min-Rui ^{[1
]}

Shen, Pei-Kang ^{[2
]}

Yu, Shu-Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei Natl Lab Phys Sci Microscale, Div Nanomat & Chem,Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China

[2] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[3] Yangzhou Univ, Sch Phys Sci & Technol, Yangzhou 225009, Jiangsu, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2010年 / 16卷 / 39期

基金：

中国国家自然科学基金;

关键词：

cobalt; electrochemistry; hierarchical structures; magnetic properties; solvothermal synthesis; sulfur; COBALT SULFIDE; HYDROTHERMAL SYNTHESIS; TEMPERATURE SYNTHESIS; GENERALIZED SYNTHESIS; ELECTRONIC-PROPERTIES; TIO2; NANOSPHERES; TITANIA SPHERES; INTERIOR SPACE; ANODE MATERIAL; PHOSPHATE;

D O I：

10.1002/chem.200903263

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple solvothermal route in a binary solution of triethylenetetramine (TETA) and deionized water (DIW) has been used to synthesize hierarchical hollow Co9S8 microspheres with high surface area (80.38 rn(2)g(-1)). An appropriate volume ratio of TETA:DIW has been found to be essential for the formation of hollow Co9S8 microspheres. The magnetic study indicated that the Co9S8 hollow microspheres are paramagnetic at high temperature and antiferromagnetic at low temperature. The oxygen reduction reaction experiments demonstrated that the onset potential of the Co9S8 sample is 0.88 V, which is comparable to the value predicted for Co9S8 (0.74 V) from the theoretical simulation. The discharge capability of Co9S8 hollow microspheres as cathode materials for lithium ion batteries and their electrocatalytic activity for the oxygen reduction reaction (ORR) have been studied.

引用

页码：12000 / 12007

页数：8

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