摘要：文章谈论的铜基正极材料相关锂电的研究。先前通过实验发现了Li2CuO2电化学性能不是很好。因此将Li2CuO2掺杂Ni、Al、Cr阳离子来获得性能较好的铜基正极材料。采取了纳米球磨、喷雾干燥以及高温煅烧等工艺得到铜基正极材料。利用X射线衍射物相组成与充电放电的循环检测等表征方法来表征相关材料的性能。本实验首先以掺杂了50%Ni的Li2CuO2为原料在780℃下高温煅烧后获得Li2Cu0。5Ni0。5O2。最后通过Al、Cr两种阳离子的掺杂进行三者之间相关性能的对比。通过了Ni掺杂之后的电池电化学性能有了非常高的进步。Li2Cu0。5Ni0。5O2首次充电比容量是170。23mAh/g，经过了25次充电放电循环后，Li2Cu0。5Ni0。5O2的充电比容量保持率为83。6%。72204

毕业论文关键词： Li2CuO2；纳米球磨；喷雾干燥；高温固相法；性能表征

The synthesis and electrochemical properties of the copper base material

Abstract: This paper designed the lithium ion batteries with synthesis and electrochemical properties of the copper anode material research。Previously,we found the electrochemical performance of Li2CuO2 is not very good by the experiments。so,in order to receive good performance of the copper anode material,the Li2CuO2 doped nickel,aluminum and chromium 。Adopted nano ball mill,spray drying and high temperature calcination process to get the copper anode material。Using the X-ray diffraction and charge and discharge cycle test to characterization of the electrochemical performance anout synthetic materials。First of all,this experiment use Li2CuO2 doped 50% nickel as the raw material to high temperature calcination in 780℃ to receive Li2Cu0。5Ni0。5O2。Finally,to contrast the electrochemical performance by doping two another cations。After the nickel doping,its electrochemical performance have a big improvement。 Li2Cu0。5Ni0。5O2 first charge and discharge specific capacity is 170。23 mAh/g。By the charge and discharge cycle of 25 times, Li2Cu0。5Ni0。5O2 charge and discharge specific capacity retention is 83。6%。

Keywords: Li2CuO2; nano-milling; spray drying; high-temperature solid-state reaction; performane characterization

目  录

1。 绪论 1

1。1 引言 1

1。2锂离子电池简介 1

1。2。1锂离子电池发展状况 1

1。2。2锂离子电池的组成及工作原理 2

1。3锂离子电池正极材料 3

1。4 锂离子电池正极材料Li2CuO2的研究 4

1。4。1锂离子电池发展状况 4

1。4。2锂离子电池发展状况 4

1。5 课题内容 5

1。5。1 课题研究目的与意义 5

1。5。2 课题探究内容 5

1。5。3 实验方案设计 6

2。 实验及表征 7

2。1 实验原料与仪器 7

2。1。1 实验药品与原材料 7

2。1。2 实验设备仪器 7

2。2 材料制备 8

2。3 正极材料的制备与电池组装 9

2。4 物理性能表征 9

2。4。1 粒度检测 9

2。4。2 X射线衍射分析