NDLI: Effect of heat treatment temperature on microstructure and electrochemical properties of hollow carbon spheres prepared in high-pressure argon

Content Provider	Springer Nature Link
Author	Liu, Boyang Zhou, Yun Jia, Dechang Zuo, Pengjian Shao, Yingfeng Zhang, Jingwei
Copyright Year	2011
Abstract	Heat treatment was carried out between 800 and 1200°C to investigate its effects on the microstructure and electrochemical properties of the hollow carbon spheres (HCSs) prepared in high-pressure argon. Samples were characterized by X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, high-resolution transmission electron microscopy and N$_{2}$ adsorption-desorption isotherms. The graphitization of the HCSs was improved with increase of heat treatment temperature. Mesopores of ca. 4 nm in diameter were created on the HCSs after the heat treatment. The results of electrochemical performance measurements for the HCSs as anode material for lithium ion batteries indicate that the discharge capacity of the HCSs is improved after heat treatment at 800°C compared with the as-prepared HCSs and have a maximum value of 357 mAh/g and still retains 303 mAh/g after 40 cycles. However, the discharge capacity of the HCSs decreases and the cycling performance is improved with the increase of heat treatment temperature.
Starting Page	1707
Ending Page	1714
Page Count	8
File Format	PDF
ISSN	02504707
Journal	Bulletin of Materials Science
Volume Number	34
Issue Number	7
e-ISSN	09737669
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-06-17
Publisher Institution	Indian Academy of Sciences
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hollow carbon spheres heat treatment gas pressure lithium ion battery Engineering Materials Science
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science

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