Effects of carbon sources on electrochemical performance of Li4Ti5O12/C composite anode materials

Li 4 Ti 5 O 12 /C composite materials were synthesized by two-step solid state reaction method with glucose, sucrose, and starch as carbon sources, respectively. The effects of carbon sources on the structure, morphology, and electrochemical performance of Li 4 Ti 5 O 12 /C composite materials were...

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Bibliographic Details
Published inJournal of Central South University of Technology. Science & technology of mining and metallurgy Vol. 17; no. 6; pp. 1207 - 1210
Main Authors Liu, Ping, Zhang, Zhi-an, Li, Jie, Lai, Yan-qing
Format Journal Article
LanguageEnglish
Published Heidelberg Central South University 01.12.2010
Subjects
Engineering
Metallic Materials
Ti
carbon
anode material
lithium-ion battery
Li
O
electrochemical performance
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ISSN1005-9784
1993-0666
DOI10.1007/s11771-010-0620-3

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Summary:Li 4 Ti 5 O 12 /C composite materials were synthesized by two-step solid state reaction method with glucose, sucrose, and starch as carbon sources, respectively. The effects of carbon sources on the structure, morphology, and electrochemical performance of Li 4 Ti 5 O 12 /C composite materials were investigated by SEM, XRD and electrochemical tests. The results indicate that carbon sources have almost no effect on the structure of Li 4 Ti 5 O 12 /C composite materials. The initial discharge capacities of the Li 4 Ti 5 O 12 /C composite materials are slightly lower than those of as-synthesized Li 4 Ti 5 O 12 . However, Li 4 Ti 5 O 12 /C composite materials show better electrochemical rate performance than the as-synthesized Li 4 Ti 5 O 12 . The capacity retention (79%) of the Li 4 Ti 5 O 12 /C composite materials with starch as carbon source, is higher than that of Li 4 Ti 5 O 12 /C composite materials with glucose and sucrose as carbon source at current rate of 2.0 C .
ISSN:1005-9784
1993-0666
DOI:10.1007/s11771-010-0620-3