Facile synthesis and superior anodic performance of ultrafine SnO2-containing nanocomposites
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作者:
Liu, Hongpeng
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E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaE China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Liu, Hongpeng
[1
]
Long, Donghui
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E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaE China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Long, Donghui
[1
]
Liu, Xiaojun
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E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaE China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Liu, Xiaojun
[1
]
Qiao, Wenming
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E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaE China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Qiao, Wenming
[1
]
Zhan, Liang
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E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaE China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Zhan, Liang
[1
]
Ling, Licheng
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E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R ChinaE China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Ling, Licheng
[1
]
机构:
[1] E China Univ Chem Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
Ultrafine SnO2-containing nanocomposites were synthesized from glucose/SnCl2 acid solution under hydrothermal environment. The content of SnO2 in the nanocomposites could be adjusted by changing the mass ratio of SnCl2 to glucose in the initial solution. The crystalline structure and morphology of the as-synthesized nanocomposites have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The results revealed that the nanocomposites were composed of highly dispersing SnO2 nanoparticles with the sizes of only a few nanometers (3-5 nm). Electrochemical tests demonstrated that the electrochemical performances were strongly dependent on the content of SnO2 in the nanocomposites. The nanocomposites containing 75 wt.% SnO2 exhibited an outstanding reversible capacity of(310 mAh/g and high capacity retention after 200 cycles. The extraordinary performance should originate from the very small size of SnO2 nanoparticles and carbon precursor matrix derived from glucose which can confer the ability to accommodate the volume changes and prevent the agglomeration of Sn particles during charge/discharge process. (C) 2009 Elsevier Ltd. All rights reserved.
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Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South KoreaSeoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Han, SJ
Jang, BC
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Jang, BC
Kim, T
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Kim, T
Oh, SM
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Oh, SM
Hyeon, T
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
机构:
Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South KoreaSeoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Han, SJ
Jang, BC
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Jang, BC
Kim, T
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Kim, T
Oh, SM
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea
Oh, SM
Hyeon, T
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机构:Seoul Natl Univ, Natl Creat Res Initiat Ctr Oxide Nanocrystalline, Seoul 151744, South Korea