| TiO2 / SiO2核 / 壳结构复合粒子的组装及其电化学性能 |
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| 引用本文： | 钱东,程睿菁,卢周广,李波,王洪恩,黄可龙.TiO2 / SiO2核 / 壳结构复合粒子的组装及其电化学性能[J].无机化学学报,2007,23(2):305-309. |
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| 作者姓名： | 钱东 程睿菁 卢周广 李波 王洪恩 黄可龙 |
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| 作者单位： | 1. 中南大学化学化工学院,长沙,410083;中南大学粉末冶金国家重点实验室,长沙,410083
2. 中南大学化学化工学院,长沙,410083 |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家重点实验室基金 |
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| 摘 要： | TiO2 coated SiO2 materials as anode for lithium-ion batteries were synthesized via an in situ hydrolysis of tetraethyl orthosilicate under ultrasonic irradiation using nanometer-sized TiO2 colloids as precursors. The XRD patterns indicate that the as-prepared core/shell particles remain anatase after calcining below 800 ℃. TEM observation shows that the particle size of TiO2 / SiO2 composites is ca. 200 nm, and a homogeneous SiO2 layer is coated on the surfaces of TiO2 particles. FTIR spectra demonstrate that SiO2 could have been coated on the surfaces of TiO2 particles via a chemical bonding. In addition, the first specific charge and discharge capacities of the coated particle electrode were 66.4 mAh·g-1 and 90.7 mAh·g-1, respectively, which indicates that the TiO2 / SiO2 particles are more stable than the monodispersed TiO2. Meanwhile, the new material has good lithium intercalation-deintercalation performances.
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| 关 键 词： | 原位水解 TiO2 / SiO2 核/壳复合粒子 锂离子电池负极材料 |
| 文章编号： | 1001-4861（2007）02-0305-05 |
| 修稿时间： | 2006-08-10 |
TiO2 / SiO2 Core / Shell Structured Particles: Assembly and Electrochemical Characteristics |
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| QIAN Dong,CHENG Rui-Jing,LU Zhou-Guang,LI Bo,WANG Hong-En and HUANG Ke-Long.TiO2 / SiO2 Core / Shell Structured Particles: Assembly and Electrochemical Characteristics[J].Chinese Journal of Inorganic Chemistry,2007,23(2):305-309. |
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| Authors: | QIAN Dong CHENG Rui-Jing LU Zhou-Guang LI Bo WANG Hong-En and HUANG Ke-Long |
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| Institution: | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083;State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 and College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 |
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| Abstract: | |
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| Keywords: | in situ hydrolysis TiO2 / SiO2 core/shell composite particles anode materials for Li-ion battery |
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