CN105047941A - 一种涂覆碳纳米管薄膜的铝/铜箔的制备方法 - Google Patents
一种涂覆碳纳米管薄膜的铝/铜箔的制备方法 Download PDFInfo
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000011889 copper foil Substances 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000002238 carbon nanotube film Substances 0.000 title claims abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 32
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 32
- 239000006185 dispersion Substances 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000011888 foil Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 7
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002270 dispersing agent Substances 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 3
- 238000007590 electrostatic spraying Methods 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 238000001132 ultrasonic dispersion Methods 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 abstract 2
- 239000013543 active substance Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000007610 electrostatic coating method Methods 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 238000001291 vacuum drying Methods 0.000 abstract 1
- 239000002033 PVDF binder Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
一种涂覆碳纳米管薄膜的铝/铜箔的制备方法,包括以下步骤:(1)以乙醇、N-甲基吡咯烷酮、丙酮或苯为液体溶剂,加入碳纳米管和分散剂超声分散,再按0.5-10%的重量百分比加入粘接剂,高速剪切分散,制得碳纳米管重量百分比为3-30%的碳纳米管分散液浆料;(2)采用静电喷涂或涂布机涂布的方法将碳纳米管分散液涂于铜箔/铝箔上;(3)真空烘干箱中100℃烘干。本发明的产品切片后可用于锂电正/负极做集流体,或超级电容器中的极片或集流体;可裁剪成需要的形状尺寸,制备方法简单易行;本发明能提高活性物质与集流体的粘附力,降低电池界面和内阻,在锂电池、超级电容器等领域有广大应用前景。
Description
技术领域
本发明属于复合材料制备技术领域,涉及静电喷涂等复合材料制备方法。
背景技术
利用功能涂层对电池导电基材进行表面处理是一项突破性的技术创新,覆碳铝箔/铜箔就是将分散好的纳米导电石墨和碳包覆粒,均匀、细腻地涂覆在铝箔/铜箔上。它能提供极佳的静态导电性能,收集活性物质的微电流,从而大幅度降低正/负极材料和集流之间的接触电阻,并能提高两者之间的附着能力,可减少粘结剂的使用量,进而使电池的整体性能产生显著的提升。而碳纳米管,是一种具有特殊结构(径向尺寸为纳米量级,轴向尺寸为微米量级、管子两端基本上都封口)的一维量子材料。可以被看成具有良好导电性能的一维量子导线。且其在锂电中作为活性物质时比容量可达2000mAh/g,是石墨的5倍。故碳纳米管被认为是有发展前景的涂碳铝箔/铜箔原料。
发明内容
本发明的目的是提出一种将碳纳米管涂覆于铝箔和铜箔的制备锂离子电池复合集流体的方法。
本发明是通过以下技术方案实现的。
本发明所述的一种涂覆碳纳米管的铝箔/铜箔的制备方法,包括以下步骤。
(1)以乙醇(或N-甲基吡咯烷酮、丙酮、苯)为液体溶剂,加入碳纳米管和分散剂超声分散,再按0.5-10%的重量百分比加入粘接剂(如聚偏氟乙烯、羧甲基纤维素)高速剪切分散,制得碳纳米管重量百分比为3-30%的碳纳米管分散液浆料。
(2)采用静电喷涂或涂布机涂布的方法将碳纳米管分散液涂于铜箔/铝箔上。
(3)真空烘干箱中100℃烘干。
本发明的产品切片后可用于锂电正/负极做集流体,或超级电容器中的极片或集流体。可裁剪成需要的形状尺寸,制备方法简单易行。本发明能提高活性物质与集流体的粘附力,降低电池界面和内阻。在锂电池、超级电容器等领域有广大应用前景。
具体实施方式
本发明将通过以下实施例作进一步说明。
以下实施例中碳纳米管(CNT)的来源是按中国专利ZL201210067937.1、ZL201210304345.7和ZL201310334834.1制备的。
实施例1。
(1)将20gCNT加入100ml乙醇中,充分润湿后加2g碳纳米管醇分散剂TNADIS超声分散1h,按1%的重量百分比加入接剂聚偏氟乙烯(PVDF),高速剪切分散,制得碳纳米管分散液浆料。
(2)采用涂布机涂布的方法将碳纳米管分散液涂于铜箔/铝箔,涂布厚度为1--100um。
(3)真空烘干箱中100℃烘干6h,取出切片即可用做锂离子电池集流体待用。
实施例2。
(1)将15gCNT加入NMP中,充分润湿后加2g碳纳米管醇分散剂TNADIS超声分散2h,按5%的重量百分比加入粘接剂PVDF,高速剪切分散,制得碳纳米管分散液浆料。
(2)采用静电喷涂方法将碳纳米管分散液喷涂于铜箔/铝箔,涂布厚度为10-100um。
(3)真空烘干箱中100℃烘干6h,取出切片即可用做锂离子电池集流体待用。
实施例3。
(1)将10gCNT加入丙酮中,充分润湿后加2g碳纳米管醇分散剂TNADIS超声分散3h,按10%的重量百分比加入粘接剂PVDF高速剪切分散,制得碳纳米管分散液浆料。
(2)采用静电喷涂方法将碳纳米管分散液喷涂于铜箔/铝箔上,涂布厚度为10-100um。
(3)真空烘干箱中100℃烘干6h,取出切片即可用做锂离子电池集流体。
Claims (1)
1.一种涂覆碳纳米管薄膜的铝/铜箔的制备方法,其特征是包括以下步骤:
(1)以乙醇、N-甲基吡咯烷酮、丙酮或苯为液体溶剂,加入碳纳米管和分散剂超声分散,再按0.5-10%的重量百分比加入粘接剂,高速剪切分散,制得碳纳米管重量百分比为3-30%的碳纳米管分散液浆料;
(2)采用静电喷涂或涂布机涂布的方法将碳纳米管分散液涂于铜箔/铝箔上;
(3)真空烘干箱中100℃烘干。
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Cited By (11)
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CN105869918A (zh) * | 2016-04-06 | 2016-08-17 | 清华大学 | 一种基于碳纳米材料的超级电容器及其制备方法 |
CN106252666A (zh) * | 2016-10-11 | 2016-12-21 | 合肥国轩高科动力能源有限公司 | 一种锂离子电池负极集流体的制备方法 |
CN106299552A (zh) * | 2016-10-19 | 2017-01-04 | 南昌大学 | 石墨化碳纳米管柔性膜锂空气电池的制备方法 |
CN106564878A (zh) * | 2016-11-07 | 2017-04-19 | 南昌大学 | 一种碳纳米管导热膜的制备方法 |
CN106784856A (zh) * | 2016-12-28 | 2017-05-31 | 成都迈德克科技有限公司 | 一种纳米碳纤维/金属箔双层复合材料及其制备方法 |
CN107681160A (zh) * | 2017-09-21 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | 一种涂炭铝箔的制备方法 |
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CN105869918A (zh) * | 2016-04-06 | 2016-08-17 | 清华大学 | 一种基于碳纳米材料的超级电容器及其制备方法 |
CN106252666A (zh) * | 2016-10-11 | 2016-12-21 | 合肥国轩高科动力能源有限公司 | 一种锂离子电池负极集流体的制备方法 |
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CN106564878A (zh) * | 2016-11-07 | 2017-04-19 | 南昌大学 | 一种碳纳米管导热膜的制备方法 |
CN106784856A (zh) * | 2016-12-28 | 2017-05-31 | 成都迈德克科技有限公司 | 一种纳米碳纤维/金属箔双层复合材料及其制备方法 |
CN107681160A (zh) * | 2017-09-21 | 2018-02-09 | 合肥国轩高科动力能源有限公司 | 一种涂炭铝箔的制备方法 |
CN107887568A (zh) * | 2017-10-23 | 2018-04-06 | 柔电(武汉)科技有限公司 | 一种导电集流体及其制备方法 |
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CN108493005A (zh) * | 2018-01-22 | 2018-09-04 | 江苏集盛星泰新能源科技有限公司 | 一种锂离子电容器的制备方法 |
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CN108666580A (zh) * | 2018-04-13 | 2018-10-16 | 北京卫蓝新能源科技有限公司 | 一种聚合物三维集流体、制备方法及应用 |
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