负极材料Li_4Ti_5O_(12)合成中优化原料组成的研究

摘要以不同的钛源(锐钛矿型TiO2、金红石型TiO2和无定形TiO2)和不同的锂源(Li2CO3和LiOH.H2O),采用高温固相合成法合成Li4Ti5O12,并对Li4Ti5O12的合成工艺进行了优化。经试验发现,在900℃下以锐钛矿型TiO2和Li2CO3为原料合成的Li4Ti5O12具有良好的电化学性能,Li4Ti5O12材料在Li+嵌入和脱出的过程中,其晶型不发生变化。

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	穆雪梅
	唐致远

关键词： Li4Ti5O12 锂离子蓄电池负极材料合成电化学性能

Abstract： Li_4Ti_5O_(12) was prepared by solid-state method with different sources of titanium(anatase,rutile,amorphous) and lithium(Li_2CO_3,LiOH·H_2O),the preparation of Li_4Ti_5O_(12) was optimized and Li_4Ti_5O_(12) was characterized.The experimental results showed that Li_4Ti_5O_(12) synthesized with anatase and Li_2CO_3 at 900 ℃ had better performance of lithium intercalation,excellent cyclicity,stable voltage,and higher first discharge capacity.In addition,during the process of Li~+ intercalation and de-intercalation,the crystal form of Li_4Ti_5O_(12) doesn't change.

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Received 2009-03-15; published 2009-03-15

引用本文:

穆雪梅;唐致远;.负极材料Li_4Ti_5O_(12)合成中优化原料组成的研究[J]. 化学工业与工程, 2009,26(2): 99-102

MU Xue-mei,TANG Zhi-yuan.Optimization for Synthesizing Anode Material of Li_4Ti_5O_(12)[J]. Chemcial Industry and Engineering, 2009,26(2): 99-102

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