CN114628688A - 一种复合铜材料的制备工艺 - Google Patents

一种复合铜材料的制备工艺 Download PDF

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CN114628688A
CN114628688A CN202210407644.7A CN202210407644A CN114628688A CN 114628688 A CN114628688 A CN 114628688A CN 202210407644 A CN202210407644 A CN 202210407644A CN 114628688 A CN114628688 A CN 114628688A
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copper
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吕清水
林腾光
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Jiangxi Guangteng Weina Material Co ltd
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Abstract

本发明涉及非金属材料复铜工艺领域，尤其涉及一种复合铜材料的制备工艺，包括以下具体步骤：S1、在磁控溅射卷绕镀膜机内，将非金属原基膜缠绕在放卷轴和收卷轴上；S2、对镀膜机抽真空再通入氩气；S3、驱动放卷轴和收卷轴同步旋转，并依次开镍靶a和镍靶b、开铜靶a和铜靶b、开铜靶c和铜靶d、开铜靶e和铜靶f、开铜靶g和铜靶h以及开铜靶i和铜靶j，得到非金属膜A；S4、将非金属膜A输送至电镀液中进行电镀处理，在非金属膜A端面生成加厚铜层，得到非金属复合铜材料B。本发明采用非金属原基膜制得的非金属复合铜材料B能避免金属首饰引起的活性物质脱落，能提升电池循环寿命，且能简单电池的自重。

Description

一种复合铜材料的制备工艺
技术领域
本发明涉及非金属材料复铜工艺领域，尤其涉及一种复合铜材料的制备工艺。
背景技术
传统锂离子电池负极集流体是铜箔，随着锂电技术的发展，锂离子电池的安全、轻量化和柔性化成为人们的追求；复合铜材料是传统铜箔克重的1/2，同样重量更轻。PET、PP和BOPP材料本身具有柔软性，复合铜材料后根据柔韧性可折弯和卷绕，对锂电池安全性提升，复合铜材料作为负极的集流体就像一个保险，针刺后针刺位点迅速断开，从而保证了电池的安全，复合铜材料的成本更低大大降低锂电池的生产成本。但是传统铜箔由于制备技术的局限，目前铜箔最薄可量产到6μm，且53.58克/平方米，对于铜箔的生产再变薄、变轻很难实现。
发明内容
本发明目的是针对背景技术中存在的问题，提出一种复合铜材料的制备工艺。
本发明提供的技术方案为一种复合铜材料的制备工艺，包括以下具体步骤：
S1、在磁控溅射卷绕镀膜机内，将非金属原基膜缠绕在放卷轴上，再将非金属原基膜经过各个导辊收卷至收卷轴上；
S2、对磁控溅射卷绕镀膜机依次进行预抽、粗抽和高抽操作，直至真空设备内的真空度为1.2×10-2pa，再通入氩气直至真空度达到1.8～2.0×10-1pa；
S3、启动磁控溅射卷绕镀膜机；
驱动放卷轴和收卷轴同步旋转，并依次开镍靶a和镍靶b、开铜靶a和铜靶b、开铜靶c和铜靶d、开铜靶e和铜靶f、开铜靶g和铜靶h以及开铜靶i和铜靶j，在非金属原基膜的上下表面均镀有镍铜合金层，得到非金属膜A；
S4、将非金属膜A输送至电镀液中进行电镀处理，在非金属膜A端面生成加厚铜层，得到非金属复合铜材料B。
优选的，非金属原基膜包括PET膜、PP膜和BOPP膜。
优选的，非金属原基膜的厚度为2.5～4.5微米。
优选的，非金属膜A上的镍铜合金层包括依次镀有的金属镍层和金属铜层；金属镍层的厚度为4～6nm，金属铜层的厚度为29～31nm。
优选的，非金属复合铜材料B上的加厚铜层的厚度为1um。
优选的，电镀液的组分包括焦磷酸铜、焦磷酸钾、柠檬酸铵、柠檬酸、氨水和水；
其中，焦磷酸铜的浓度为40～60g/L；焦磷酸钾的浓度为180～200g/L、柠檬酸铵的浓度为10～15g/L、柠檬酸的浓度为40～50g/L以及氨水的浓度为10-20g/L。
本发明的上述技术方案具有如下有益的技术效果：
本发明采用非金属原基膜制得的非金属复合铜材料B不仅能降低其重量，还能减少金属铜的使用，同时能降低锂电池的自重，还能避免金属首饰引起的活性物质脱落，能提升电池循环寿命；制得的非金属复合铜材料B中含有非金属隔膜层可以大大提高电池的燃烧安全性，进一步提高电池的使用寿命。
具体实施方式
实施例1
本发明提出的一种复合铜材料的制备工艺，包括以下具体步骤：
S1、在磁控溅射卷绕镀膜机内，将非金属原基膜缠绕在放卷轴上，再将非金属原基膜经过各个导辊收卷至收卷轴上；其中，非金属原基膜包括PET膜、PP膜和BOPP膜；非金属原基膜的厚度为2.5～4.5微米；
S2、对磁控溅射卷绕镀膜机依次进行预抽、粗抽和高抽操作，直至真空设备内的真空度为1.2×10-2pa，再通入氩气直至真空度达到1.8～2.0×10-1pa；
S3、启动磁控溅射卷绕镀膜机；
驱动放卷轴和收卷轴同步旋转，并依次开镍靶a和镍靶b、开铜靶a和铜靶b、开铜靶c和铜靶d、开铜靶e和铜靶f、开铜靶g和铜靶h以及开铜靶i和铜靶j，在非金属原基膜的上下表面均镀有镍铜合金层，得到非金属膜A；非金属膜A上的镍铜合金层包括依次镀有的金属镍层和金属铜层；非金属膜A每单面上的金属镍层的厚度为4～6nm，金属铜层的厚度为29～31nm；金属镍层连接非金属原基膜端面；金属铜层连接金属镍层；
磁控溅射卷绕镀膜机中的镍靶a和镍靶b对称分布、铜靶a和铜靶b对称分布、铜靶c和铜靶d对称分布、铜靶e和铜靶f对称分布、铜靶g和铜靶h对称分布以及铜靶i和铜靶j对称分布，使用时，非金属原基膜从镍靶a和镍靶b之间、铜靶a和铜靶b之间、铜靶c和铜靶d之间、铜靶e和铜靶f之间、铜靶g和铜靶h之间及铜靶i和铜靶j之间之间穿过，进而在非金属原基膜的上下端面镀一层镍铜合金层；
进一步的，工作状态下，镍靶a的电流为8～15A、镍靶b的电流为8～15A、铜靶a的电流为12～15A、铜靶b的电流为12～15A、铜靶c的电流为12～15A、铜靶d的电流为12～15A、铜靶e的电流为12～15A、铜靶f的电流为12～15A、铜靶g的电流为10～13A、铜靶h的电流为10～13A、铜靶i的电流为7～10A和铜靶j的电流为7～10A；
S4、将非金属膜A输送至电镀液中进行电镀处理，在非金属膜A端面生成加厚铜层，得到非金属复合铜材料B；非金属复合铜材料B上的加厚铜层的厚度为1um。
实施例二
本发明提出的一种复合铜材料的制备工艺，相较于实施例一，本实施例中电镀液的组分包括焦磷酸铜、焦磷酸钾、柠檬酸铵、柠檬酸、氨水和水；
其中，焦磷酸铜的浓度为40～60g/L；焦磷酸钾的浓度为180～200g/L、柠檬酸铵的浓度为10～15g/L、柠檬酸的浓度为40～50g/L以及氨水的浓度为10-20g/L。
实验例
采用本发明提供的复合铜材料的制备工艺制备以下样品并进行实际测重；
选用厚度为2.5um的非金属原基膜进行实验，采用本发明的工艺在非金属原基膜上生成厚度为0.033～0.037um镍铜合金层和厚度为1um的加厚铜层，得到总厚度为3.533～3.537um的非金属复合铜材料B；
经测量，实验组1中的非金属原基膜每平方米的重量为6.41g；制得的非金属复合铜材料B每平方米的重量为24.5037～24.8686g；
采用非金属原基膜制得的非金属复合铜材料B不仅能降低其重量，还能减少金属铜的使用，同时能降低锂电池的自重，还能避免金属首饰引起的活性物质脱落，能提升电池循环寿命。
上面对发明的实施方式作了详细说明，但是发明并不限于此，在所属技术领域的技术人员所具备的知识范围内，在不脱离发明宗旨的前提下还可以作出各种变化。

Claims (6)

1.一种复合铜材料的制备工艺，其特征在于，包括以下具体步骤：
S1、在磁控溅射卷绕镀膜机内，将非金属原基膜缠绕在放卷轴上，再将非金属原基膜经过各个导辊收卷至收卷轴上；
S2、对磁控溅射卷绕镀膜机依次进行预抽、粗抽和高抽操作，直至真空设备内的真空度为1.2×10-2pa，再通入氩气直至真空度达到1.8～2.0×10-1pa；
S3、启动磁控溅射卷绕镀膜机；
驱动放卷轴和收卷轴同步旋转，并依次开镍靶a和镍靶b、开铜靶a和铜靶b、开铜靶c和铜靶d、开铜靶e和铜靶f、开铜靶g和铜靶h以及开铜靶i和铜靶j，在非金属原基膜的上下表面均镀有镍铜合金层，得到非金属膜A；
S4、将非金属膜A输送至电镀液中进行电镀处理，在非金属膜A端面生成加厚铜层，得到非金属复合铜材料B。
2.根据权利要求1所述的一种复合铜材料的制备工艺，其特征在于，非金属原基膜包括PET膜、PP膜和BOPP膜。
3.根据权利要求1所述的一种复合铜材料的制备工艺，其特征在于，非金属原基膜的厚度为2.5～4.5微米。
4.根据权利要求1所述的一种复合铜材料的制备工艺，其特征在于，非金属膜A上的镍铜合金层包括依次镀有的金属镍层和金属铜层；金属镍层的厚度为4～6nm，金属铜层的厚度为29～31nm。
5.根据权利要求1所述的一种复合铜材料的制备工艺，其特征在于，非金属复合铜材料B上的加厚铜层的厚度为1um。
6.根据权利要求1所述的一种复合铜材料的制备工艺，其特征在于，电镀液的组分包括焦磷酸铜、焦磷酸钾、柠檬酸铵、柠檬酸、氨水和水；
其中，焦磷酸铜的浓度为40～60g/L；焦磷酸钾的浓度为180～200g/L、柠檬酸铵的浓度为10～15g/L、柠檬酸的浓度为40～50g/L以及氨水的浓度为10-20g/L。
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