摘要：锂离子电池（LIB）在我们的日常生活中得到了广泛的应用，这全都归功于它具有长期循环使用寿命、以及较高的容量。为满足快速增长的大规模应用的市场需求中，新型负极材料的设计与制备已经成为LIB研究领域中最热门的话题之一。本实验将利用TiO2合成Li4Ti5O12，探讨它的合成条件。62179

本文以LiOH·H2O和TiO2为原料，采用水热法合成Li4Ti5O12。通过XRD、SEM、电化学分析等测试方法，分析了样品的形貌和性能。得到的结果显示，在水热反应180℃、12h，热处理800℃、5h，添加碳源并酸洗的情况下，得到的样品性能较好。

毕业论文关键词：锂离子电池；水热法；酸洗

Study on the synthesis of Li4Ti5O12 by titanium dioxide

Abstract：Lithium ion battery (LIB) has been widely used in our daily life, thanks to its long cycle life and high capacity. In order to meet the rapid growth of the large-scale application of market demand, the design and preparation of new cathode materials has become one of the most popular topics in the field of LIB research. In this paper, we will use titanium dioxide to synthesize Li4Ti5O12, and discuss its synthesis conditions.

In the article,LiOH·H2O and TiO2 were used as raw materials, and Li4Ti5O12  was synthesized by hydrothermal method. The morphology and properties of the samples were analyzed by XRD, SEM, electrochemical analysis and other test methods. The obtained results show that the performance of the samples obtained in the case of hydrothermal reaction 180℃, 12h, heat treatment 800℃, 5h, adding carbon source and acid cleaning, the obtained results show that the obtained results are satisfactory.

Keywords: lithium-ion batteries; Hydrothermal method；Pickling 

目录1 绪论 1

1.1研究背景 1

1.2 研究目的 2

1.3 锂离子电池概述 3

1.3.1 锂离子电池的结构及工作原理 3

1.3.2 锂离子电池特点 5

1.4 锂离子电池负极材料概述 6

1.4.1 嵌入型负极材料 6

1.4.2 合金化型负极材料 6

1.4.3 转化型负极材料 7

1.5 锂离子电池正极材料概述 8

1.6 合成方法 9

1.6.1 固相反应法 9

1.6.2 溶胶-凝胶法 10

1.6.3 水热离子交换法 11

1.6.4 其它方法 11

1.7 本文选题依据和主要研究内容 11

2 实验原料、仪器、研究方法 12

2.1 实验测试仪器 12

2.2 实验用仪器 13

2.3 实验用原料 13

2.4 Li4Ti5O12的制备 14

2.5 酸洗流程 14

3 性能测试 15

3.1 结构表征 15

3.2 电化学性能 15

3.3 三电极测试系统循环伏安测试 15

4 结果与讨论 15

4.1 样品电化学性能