电解铜箔表面化学粗化改性工艺研究
毕业论文关键词： 电解铜箔；粗化；粘结剂；添加剂；结合力
The Study of the modification of electrochemical coarsening on the surface of the Electrolytic copper foil
Abstract: Copper foil is not only the carrier of the materials in Battery cathode, but also the collection and transfer of negative pole . In order to increase the combining power between the copper foil and the materials in battery cathode, we often use surface coarsening technology .Coarsening the surface on the copper foil by electroplating a zinc-nickel alloy. Xanthan gum and CMC are covered on the surface of the copper foil.Use multi-purpose instrument for friction and wear scratches morphology analysis.Combined with the ability to compare the values based on the size of Fz. The results show that the combining power between the copper foil’s surface and the binder is stronger than before and when the thickness is 100um,the combining power 5% CMC is the strongest;when the thickness is 200um,the combining power 1% CMC is the strongest;when the thickness is 300um,the combining power 1% XG is the strongest,which can prevent the negative from chalking off in the process of the charge-discharge cycle . All above ,the performance of the materials in lithium battery is more stable.
Key words: copper foil ;zinc-nickel alloy;coarsening;binder;combining power
目 录
1 引言 1
1.1 电解铜箔的概述 1
1.2 电解铜箔的发展模式与趋势 2
1.3 电解铜箔的表面处理发展 4
1.4 本课题主要研究内容 4
2 实验原理 6
2.1 扫描电子显微镜 6
2.1.1 扫描电子显微镜的原理 6
2.1.2 扫描电子显微镜的测量装置 6
2.2 粘结剂 6
2.2.1 黄原胶 6
2.2.2 羟甲基纤文素钠 7
2.3 湿膜制备器 7
2.3.1 湿膜制备器原理 7
2.3.2 湿膜制备器涂布步骤 7
2.4 多功能摩擦磨损仪 8
2.4.1 多功能摩擦磨损仪原理 8
2.5 划痕测试仪 8
2.5.1 划痕测试仪测量装置 8
3 实验内容 10
3.1 实验主要的仪器和试剂 10
3.1.1 实验材料 10
3.1.2 实验仪器 10
3.1.3 实验试剂 10
3.1.4 实验材料与装置 11
3.2 工艺流程 11
3.3 前处理 11
3.3.1 电化学除油处理 11
3.3.2 电解铜箔前处理操作步骤 13