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	水热法合成高功率锂离子二次电池用球形Li_4Ti_5O_12负极材料; Hydrothermal Synthesis of Spherical Li4Ti5O12 as Anode Material for High Power Lithium-Ion Secondary Battery
	闫慧 ; 张欢 ; 张鼎 ; 朱智 ; 其鲁
	2011
关键词	水热法合成 球形 电化学性能 锂离子二次电池 Li4Ti5O12 Hydrothermal synthesis Spherical Li4Ti5O12 Electrochemical performance Lithium-ion secondary battery
英文摘要	以球形TiO2和LiOH溶液为反应物,通过水热法合成了尖晶石型Li4Ti5O12,并使用X射线衍射(XRD)、傅里叶变换红外(FTIR)光谱、扫描电镜(SEM)和激光粒度分布(PSD)对其结构、形貌和电化学性能进行了表征.结果表明:通过该法得到的产品颗粒大小均匀,粒度分布狭窄,结构与标准Li4Ti5O12谱图一致.实验选定温度下所得的Li4Ti5O12均表现出良好的电化学性能.其中,800°C热处理所得样品的电化学性能最好,室温下,以35mA·g-1的电流密度进行充放电,其可逆容量达到162mAh·g-1,同时这种材料也表现出良好的倍率性能,即使在720mA·g-1的电流密度条件下进行充放电,...; Pure spinel-type lithium titanate, Li4Ti5O12, was successfully fabricated by a facile hydrothermal route using anatase TiO2 and LiOH solution as raw materials. The obtained samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and laser particle size distribution (PSD) analysis. The results showed that a spherical well-crystallized Li4Ti5O12 oxide was obtained at a calcination temperature of 800 degrees C. The optimal Li4Ti5O12 also has excellent electrochemical performance, which reached 162 mAh.g(-1) at a current density of 35 mA.g(-1) and a good rate capability with a capacity reached 124 mAh.g(-1) even at a current density of 720 mA.g(-1).; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 2; 09; 2118-2122; 27
语种	中文
出处	知网 ; 万方 ; SCI
出版者	物理化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/79617]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	闫慧,张欢,张鼎,等. 水热法合成高功率锂离子二次电池用球形Li_4Ti_5O_12负极材料, Hydrothermal Synthesis of Spherical Li4Ti5O12 as Anode Material for High Power Lithium-Ion Secondary Battery. 2011-01-01.

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