| 纯相Li_4Ti_5O_(12)负极材料的制备 |
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| 引用本文： | 唐定国,雷嘉,张玉良,张宇.纯相Li_4Ti_5O_(12)负极材料的制备[J].中南民族大学学报(自然科学版),2010,29(4). |
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| 作者姓名： | 唐定国 雷嘉 张玉良 张宇 |
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| 作者单位： | 中南民族大学化学与材料科学学院催化材料科学湖北省暨国家民委-教育部共建重点实验室; |
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| 基金项目： | 中南民族大学自然科学基金 |
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| 摘 要： | 通过高温固相法,选择不同的焙烧温度、焙烧时间、锂源过量比例(质量比)及研磨方式、焙烧程序等合成条件,研究了制备纯相Li_4Ti_5O_(12)的最适合条件.结果表明:多次研磨和1次焙烧有助于制备较纯产物,焙烧温度和焙烧时间对产物的纯度有一定影响,锂源过量比例对产物纯度影响较大.通过XRD分析,当锂源过量8%时,产物在2θ=20.5°处有杂峰(Li_2TiO_3),主峰(2θ=43.4°)略有分裂(LiTiO_2);当锂源过量5%时,产物基本为纯相Li_4Ti_5O_(12)杂峰消失.研究表明制备纯相Li_4Ti_5O_(12)最适合的实验条件为:锂源过量5%,焙烧温度800℃,焙烧时间12 h,反应物经过2次研磨,1次焙烧得到纯相Li_4Ti_5O_(12).
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| 关 键 词： | 纯相Li4Ti5O12 高温固相反应 实验条件 |
Synthesis of Pure-Phased Li4Ti5O12as Anode Material for Lithium Ion Battery through High-Temperature Solid State Routine |
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| Tang Dingguo,Lei Jia,Zhang Yuliang,Zhang Yu.Synthesis of Pure-Phased Li4Ti5O12as Anode Material for Lithium Ion Battery through High-Temperature Solid State Routine[J].Journal of South-Central Univ for,2010,29(4). |
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| Authors: | Tang Dingguo Lei Jia Zhang Yuliang Zhang Yu |
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| Institution: | Tang Dingguo,Lei Jia,Zhang Yuliang,Zhang Yu (Key Laboratory of Catalysis and Materials Science of the State Ethnic Affair Commission & Ministry of Education,Hubei Province,College of Chemistry and Material,South-Central University for Nationalities,Wuhan 430074,China) |
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| Abstract: | Li_4Ti_5O_(12) was prepared by a high temperature solid state routine with varied calcining temperature and time, excess lithium content, grinding method, and calcination process. The results show that several grinding processes and one-time calcining enhance the purity of the product; the calcining temperature and time have effects on the purity of the product of solid state reaction, and excess lithium content influence the purity of the product significantly. The impurity, (Li_2TiO_3),was observed near 2... |
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| Keywords: | pure-phased Li_4Ti_5O_(12) high temperature solid state routine experimental conditions |
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