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  5. Preparation and characterization of SnO2-Li4Ti5O12 composite by sol-gel technique

Preparation and characterization of SnO2-Li4Ti5O12 composite by sol-gel technique

来源 :第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg | 被引量 : 0次 | 上传用户：lyl478
【摘 要】
：
SnO2-Li4Ti5O12 was prepared by sol-gel method using tin tetrachloride, lithium acetate, tetrabutylorthotitanate and aqueous ammonia as starting materials.The composite was characterized by thermogravi
【作 者】
：
Lizhi Xiong Zeqiang He Zhoulan Yin Qiyuan Cheu 
【机 构】
：
School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083,P.R.
【出 处】
：
第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
【发表日期】
：
2009年4期
【关键词】
：
SnO2 Li4Ti5O12 composite sol-gel method lithium ion batteries 
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　　SnO2-Li4Ti5O12 was prepared by sol-gel method using tin tetrachloride, lithium acetate, tetrabutylorthotitanate and aqueous ammonia as starting materials.The composite was characterized by thermogravimertric (TG) analysis and differential thermal analysis (DTA), X-ray diffraction (XRD), infrared (IR) spectroscopy and transmission electron microscope(TEM) combined with electrochemical tests.Results show that SnO2-Li4Ti5O12 composite derived by sol-gel technique is a nanocomposite with core-shell structure,where the amorphous Li4Ti5O12 layer with 20-40nm in thickness is coated on the surface of SnO2 particles.
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