| 不同气氛下裂解含苯环聚硅氧烷制备锂离子电池Si-O-C复合负极材料的电池性能研究 |
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| 引用本文： | 刘相,谢凯,郑春满,王军. 不同气氛下裂解含苯环聚硅氧烷制备锂离子电池Si-O-C复合负极材料的电池性能研究[J]. 物理学报, 2011, 60(11): 118202-118202. DOI: 10.7498/aps.60.118202 |
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| 作者姓名： | 刘相 谢凯 郑春满 王军 |
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| 作者单位： | 1. 国防科技大学航天与材料工程学院材料科学与应用化学系,长沙 410073;2. 国防科技大学新型陶瓷纤维及复合材料国防科技重点实,长沙 410073 |
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| 基金项目： | 国家自然科学基金(批准号:10975043),河北省自然科学基金(批准号: 2010000185)和河北省教育厅重点项目(批准号:ZD2010140)资助的课题. |
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| 摘 要： | 在惰性气氛Ar和还原性气氛H2中通过高温裂解含苯环的聚硅氧烷分别制备了硅氧碳化物Si-O-C复合负极材料,并且采用了元素分析element analysis、广角粉末X射线衍射XRD、傅里叶激光拉曼光谱Raman等手段表征了二者组成和结构的差别.实验发现,在H2气氛中裂解制备的Si-O-C复合负极含有较高的可逆、较低的不可逆容量,而且可逆容量随温度的增加而增长.其中H2气氛中1000 ℃情况下制备的Si-O-C复合负极的可逆容量622 mAh/g,首次库仑效率59%.Si-O-C复合负极的不可逆容量与氧的含量相关,可逆容量可能与碳含量及碳结构,以及SiOC中硅的结构相关.在H2气氛中制备的Si-O-C负极材料是一种潜在的锂离子电池的负极材料.关键词：硅氧碳化物负极材料锂离子电池
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| 关 键 词： | 硅氧碳化物 负极材料 锂离子电池 |
| 收稿时间： | 2010-12-07 |
Electrochemical property of Si-O-C composite anode materials prepared by pyrolyzing polysiloxane containing phenyl under different atmospheres |
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| Liu Xiang,Xie Kai,Zheng Chun-Man and Wang Jun. Electrochemical property of Si-O-C composite anode materials prepared by pyrolyzing polysiloxane containing phenyl under different atmospheres[J]. Acta Physica Sinica, 2011, 60(11): 118202-118202. DOI: 10.7498/aps.60.118202 |
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| Authors: | Liu Xiang Xie Kai Zheng Chun-Man Wang Jun |
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| Affiliation: | College of Physics Science and Technology, Hebei University, Baoding 071002, China;College of Physics Science and Technology, Hebei University, Baoding 071002, China;College of Physics Science and Technology, Hebei University, Baoding 071002, China;College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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| Abstract: | Silicon Oxycarbide (Si-O-C) composite anode materials are prepared by pyrolysis of polysiloxane containing phenyl under argon and hydrogen atmospheres,separately.They are characterized by element analysis,wide-angle powder X-ray diffraction,Raman spectroscopy for comparison with each other.It is found that the silicon oxycarbide composite anode pyrolyzed under a hydrogen atmosphere demonstrates lower irreversible capacity and larger reversible capacity which increases with temperature rising.The one pyrolyz... |
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| Keywords: | coupled system superlattice pattern the ratio of wave number numerical simulation |
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