Electrochemical Performance of SnO2/ Graphite Nanocomposites as Anode Material for Lithium-Ion Batteries

SnO2/ graphite nanocomposites with different SnO2 contents were successfully prepared by a co-precipitation method.The nanocomposites, used as the anode material for lithium-ion batteries（ LIBs）,were characterized by X-ray diffraction（ XRD）,thermogravimetric analysis（ TGA）, and transmission electron...

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Published in东华大学学报（英文版） Vol. 32; no. 3; pp. 379 - 383
Main Author 白雪君 王彪 程旭 江建明
Format Journal Article
LanguageEnglish
Published College of Material Science and Engineering, Donghua University, Shanghai 201620, China%College of Material Science and Engineering, Donghua University, Shanghai 201620, China 30.06.2015
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
Subjects
tin oxide
lithium-ion batteries (LIBs)
anode material
graphite
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ISSN1672-5220

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Summary:SnO2/ graphite nanocomposites with different SnO2 contents were successfully prepared by a co-precipitation method.The nanocomposites, used as the anode material for lithium-ion batteries（ LIBs）,were characterized by X-ray diffraction（ XRD）,thermogravimetric analysis（ TGA）, and transmission electron microscopy（ TEM）. The SnO2 particles had the average size of about 15 nm and their distribution on graphite matrix much depended on the contents of SnO2 in the nanocomposites. The galvanostatic charge-discharge cycles were used to investigate the effects of SnO2 contents on the electrochemical performance of these composites. The results show that the initial specific capacities increase with the SnO2 contents. However,the cyclic stabilities are determined by the distribution of SnO2 particles in composites. For55% by weight SnO2/ graphite composites, the initial specific capacity is 740 m Ah g- 1and 70% of the initial specific capacity（ 518 m Ah·g- 1） can still be retained after 50 charge-discharge cycles.
Bibliography:31-1920/N
BAI Xue-jun , WANG Biao , CHENG Xu , JIANG Jian-ming （ College of Material Science and Engineering, Donghua University, Shanghai 201620, China 2 State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China）
tin oxide; graphite; anode material; lithium-ion batteries（LIBs ）
SnO2/ graphite nanocomposites with different SnO2 contents were successfully prepared by a co-precipitation method.The nanocomposites, used as the anode material for lithium-ion batteries（ LIBs）,were characterized by X-ray diffraction（ XRD）,thermogravimetric analysis（ TGA）, and transmission electron microscopy（ TEM）. The SnO2 particles had the average size of about 15 nm and their distribution on graphite matrix much depended on the contents of SnO2 in the nanocomposites. The galvanostatic charge-discharge cycles were used to investigate the effects of SnO2 contents on the electrochemical performance of these composites. The results show that the initial specific capacities increase with the SnO2 contents. However,the cyclic stabilities are determined by the distribution of SnO2 particles in composites. For55% by weight SnO2/ graphite composites, the initial specific capacity is 740 m Ah g- 1and 70% of the initial specific capacity（ 518 m Ah·g- 1） can still be retained after 50 charge-discharge cycles.
ISSN:1672-5220