锂离子电池负极材料氧化铁的制备及研究
毕业论文关键词 锂离子电池 负极材料 氧化铁 炭改性
Title Preparation and research of the iron oxide used as Lithium-ion battery cathode material
Abstract
Lithium-ion batteries are currently commercialized graphite-based cathode
material, but with the development of electric vehicles and other emerging areas, the
traditional graphite materials have not qualified for. Iron-based oxide nanomaterials
is a new negative electrode material, with low prices, abundant raw materials, simple
preparation, higher than the theoretical capacity, pollution, etc., which has great
potential value. This article used hydrothermal method to synthesize Fe3O4 active
substances and tested its electrochemical properties. We explored ways adout the
poor cycling and rate performance and problems that iron oxide has resulting from
poor electrical conductivity, low ion mobility, big volume change during lithium’s
insertion and disinsertion, and decided to improve that performances by using a
carbon-dope way.
Keywords Lithium-ion batteries anode material iron oxide carbon-dope
目 次
1 绪论 1
1.1 引言. 1
1.2 锂离子电池的简介. 1
1.2.1 锂离子电池的原理. 1
1.2.2 锂离子电池的发展. 2
1.2.3 锂离子电池的结构. 2
1.2.4 锂离子电池的特点. 3
1.2.5 锂离子电池的应用. 4
1.3 锂离子电池负极材料. 4
1.3.1 碳基负极材料. 5
1.3.2 非碳基负极材料. 6
2 实验部分 8
2.1 实验的药品与设备. 8
2.2 氧化铁负极材料的制备 11
2.3 电极的制备及电池的组装 11
2.4 材料的表征和电化学性能测试 12
3 结果与讨论 . 13
3.1 形貌分析 13
3.2 物相分析 14
3.3 氧化铁负极材料的电性能测试分析 14
结 论 20
致 谢 21
参 考 文 献 . 22
1 绪论
1.1 引言
锂离子电池在近几年来发展飞快，从不知不觉中进入人们的生活到现在我们的生活因
为它发生了巨大改变，人们已经越来越离不开它了。锂离子电池的出现到如今飞速发展绝不
是偶然。一方面，我们生活的地球污染越来越严重，传统的镍镉电池势必要淘汰，而新型的
环保绿色的锂离子电池登上了舞台。不仅如此锂离子电池具有体积小、质量轻、比能量高、
无记忆效应、循环次数多、安全性好、寿命长等诸多优点，使得其应用日益广泛，从最初的
小型便携式电子设备发展到如今的动力电池方向，从最初的电子设备民用方向发展到航空航
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