CN1563502A - Electrolytic copper foil in use for high accuracy lithium cell smaller than 12 micros and preparation method - Google Patents
Electrolytic copper foil in use for high accuracy lithium cell smaller than 12 micros and preparation method Download PDFInfo
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- CN1563502A CN1563502A CN 200410017205 CN200410017205A CN1563502A CN 1563502 A CN1563502 A CN 1563502A CN 200410017205 CN200410017205 CN 200410017205 CN 200410017205 A CN200410017205 A CN 200410017205A CN 1563502 A CN1563502 A CN 1563502A
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- electrolytic copper
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Abstract
This invention relates to an electrolytic copper foil and its preparation. The foil hair side roughness is less than or equal to 0.4mum. The preparation includes an electrolyte containing copper: 50-90g/l, acid;60-100g/l to be electrolysed under 35-55deg.C added with organic mixed additives including PEG(molecular weight:600), gentian violet and gentian blue, etc, the additive volume is 3-4unit/h. By adding this additive in the preparation of electrolytic copper foils, the hair side of the foil becomes smooth closing to the roughness of the plain.
Description
[technical field]
The present invention relates to electrolytic copper foil, particularly a kind of≤12 μ m high precision lithium celies electrolytic copper foil and preparation method thereof.
[background technology]
Development along with advanced information society; mobile telephone and notebook computer product are popularized rapidly, because people begin to pay attention to environment protection and energy saving, the development of Electric power car receives much attention; as the power supply of above product, lithium cell is the ideal energy.Because these electronic products develop to miniature, slim, capacious direction, so require also more and more higher to main raw material(s)-Copper Foil of making lithium cell, electrolytic copper foil originally can not satisfy its requirement, will develop the Copper Foil that is fit to the lithium cell production requirement, thickness develops roughness to low development to thin direction (≤12 μ m), and certain tensile strength and high unit elongation will be arranged.
In the prior art, in order to obtain the Copper Foil of low roughness and high-elongation, the processing condition of electrolytic solution are crucial, and electrolytic solution copper content, acid content, temperature have been selected certain scope, and situation is as follows:
Copper content: 50-90g/l;
Acid content: 60-100g/l;
Temperature: 35-55 ℃.
By testing adding additives such as gelatin or Mierocrystalline cellulose, the Copper Foil of production is tested, and the result is as follows:
| Title | Indicated weight g/m 2 | Actual measurement thickness μ m | Tensile strength kg/m 2 | Unit elongation % | Roughness Ra μ m | |
| The light face | Hair side | |||||
| Gelatin | ??85.42 | ????14 | ????28.32 | ??2.19 | ??0.35 | ????0.84 |
| Mierocrystalline cellulose | ??87.34 | ????13 | ????29.86 | ??2.26 | ??0.35 | ????0.81 |
As above known to the table, by adding additives such as gelatin or Mierocrystalline cellulose, electrolytic copper foil the hair side surfaceness near 0.8 μ m, but still a certain distance is arranged with light face surfaceness 0.35 μ m, and its tensile strength and unit elongation neither be the most desirable.
[summary of the invention]
The present invention mainly solves the bigger technical problem of hair side surfaceness of existing electrolytic copper foil, and the approaching lithium cell of a kind of hair side surfaceness and light face surfaceness electrolytic copper foil and preparation method thereof is provided.
For solving the problems of the technologies described above, the present invention is achieved in that
A kind of≤12 μ m high precision lithium cell electrolytic copper foils, it is characterized in that the hair side roughness≤0.40 μ m of this Copper Foil.
A kind of method for preparing above-mentioned electrolytic copper foil, comprise that copper content is that 50-90g/l, acid content are 60-100g/l electrolytic solution, carry out electrolysis under 35-55 ℃ condition, it is characterized in that adding organic blending additive in this electrolytic solution, the composition of this each unit of organic blending additive is:
Poly-dithiopropane sodium sulfonate 0.01-0.05g/l;
Polyoxyethylene glycol (molecular weight 600) 0.05-0.2g/l;
2-mercaptobenzoimidazole 0.3-0.8mg/l;
Ethylene thiourea 0.2-0.7mg/l;
Methyl violet 0.005-0.015mg/l;
Methylene blue 0.005-0.015mg/l;
The addition of this organic blending additive per hour is a 3-4 unit.
The preferred addition of this organic blending additive per hour is 4 units.
Additive that the present invention utilizes originally was mainly used in electroplating technology, in order to improve surface finish, by in the preparation method of electrolytic copper foil, adding this kind additive, make the hair side surfaceness of electrolytic copper foil be reduced to and the approaching level of light face surfaceness, help the application in the lithium cell manufacturing, improved the quality of lithium cell.
[embodiment]
A kind of≤12 μ m high precision lithium cell electrolytic copper foils, the hair side roughness of this Copper Foil≤0.40 μ m.The preparation method comprises that copper content is that 50-90g/l, acid content are 60-100g/l electrolytic solution, carries out electrolysis under 35-55 ℃ condition, adds organic blending additive in this electrolytic solution, and the composition of this each unit of organic blending additive is:
Poly-dithiopropane sodium sulfonate 0.01-0.05g/l;
Polyoxyethylene glycol (molecular weight 600) 0.05-0.2g/l;
2-mercaptobenzoimidazole 0.3-0.8mg/l;
Ethylene thiourea 0.2-0.7mg/l;
Methyl violet 0.005-0.015mg/l;
Methylene blue 0.005-0.015mg/l;
The addition of this organic blending additive per hour is a 3-4 unit.
Embodiment one:
The preparation method comprises that copper content is that 50g/l, acid content are 60g/l electrolytic solution, carries out electrolysis under 35 ℃ condition, adds organic blending additive in this electrolytic solution, and the composition of this each unit of organic blending additive is:
Poly-dithiopropane sodium sulfonate 0.01g/l;
Polyoxyethylene glycol (molecular weight 600) 0.05g/l;
2-mercaptobenzoimidazole 0.3mg/l;
Ethylene thiourea 0.2mg/l;
Methyl violet 0.005mg/l;
Methylene blue 0.005mg/l;
The addition of this organic blending additive per hour is 4 units.
Prepared electrolytic copper foil is through surveying, and the hair side surfaceness is 0.40 μ m, tensile strength 35.0kg/m
2, unit elongation 3.5%.
Embodiment two:
The preparation method comprises that copper content is that 90g/l, acid content are 100g/l electrolytic solution, carries out electrolysis under 55 ℃ condition, adds organic blending additive in this electrolytic solution, and the composition of this each unit of organic blending additive is:
Poly-dithiopropane sodium sulfonate 0.05g/l;
Poly-ethanol (molecular weight 600) 0.2g/l;
2-mercaptobenzoimidazole 0.8mg/l;
Ethylene thiourea 0.7mg/l;
Methyl violet 0.015mg/l;
Methylene blue 0.015mg/l;
The addition of this organic blending additive per hour is 4 units.
Prepared electrolytic copper foil is through surveying, and the hair side surfaceness is 0.33 μ m, tensile strength 36.8.0kg/m
2, unit elongation 3.8%.
Embodiment three:
The preparation method comprises that copper content is that 80g/l, acid content are 90g/l electrolytic solution, carries out electrolysis under 45 ℃ condition, adds organic blending additive in this electrolytic solution, and the composition of this each unit of organic blending additive is:
Poly-dithiopropane sodium sulfonate 0.05g/l;
Polyoxyethylene glycol (molecular weight 600) 0.1g/l;
2-mercaptobenzoimidazole 0.5mg/l;
Ethylene thiourea 0.5mg/l;
Methyl violet 0.01mg/l;
Methylene blue 0.01mg/l;
The addition of this organic blending additive per hour is 3 units.
Prepared electrolytic copper foil is through surveying, and the hair side surfaceness is 0.38 μ m, tensile strength 35.9kg/m
2, unit elongation 3.5%.
Claims (3)
1, a kind of≤12 μ m high precision lithium cell electrolytic copper foils is characterized in that the hair side roughness≤0.40 μ m of this Copper Foil.
2, a kind of method for preparing electrolytic copper foil as claimed in claim 1, comprise that copper content is that 50-90g/l, acid content are 60-100g/l electrolytic solution, under 35-55 ℃ condition, carry out electrolysis, it is characterized in that adding organic blending additive in this electrolytic solution, the composition of this each unit of organic blending additive is:
Poly-dithiopropane sodium sulfonate 0.01-0.05g/l;
Polyoxyethylene glycol (molecular weight 600) 0.05-0.2g/l;
2-mercaptobenzoimidazole 0.3-0.8mg/l;
Ethylene thiourea 0.2-0.7mg/l;
Methyl violet 0.005-0.015mg/l;
Methylene blue 0.005-0.015mg/l;
The addition of this organic blending additive per hour is a 3-4 unit.
3, according to claim 2≤12 μ m high precision lithium celies preparation method of electrolytic copper foil, it is characterized in that: the addition of this organic blending additive per hour is 4 units.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017205 CN1563502A (en) | 2004-03-25 | 2004-03-25 | Electrolytic copper foil in use for high accuracy lithium cell smaller than 12 micros and preparation method |
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|---|---|---|---|
| CN 200410017205 CN1563502A (en) | 2004-03-25 | 2004-03-25 | Electrolytic copper foil in use for high accuracy lithium cell smaller than 12 micros and preparation method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399604C (en) * | 2005-10-09 | 2008-07-02 | 北京中科天华科技发展有限公司 | Method for treating surface of copper foil of affluxion body in lithium ion batteries |
| CN102337566A (en) * | 2011-10-28 | 2012-02-01 | 广东嘉元科技股份有限公司 | Method for manufacturing ultrathin electrolytic copper foil for new energy resource power battery |
| CN101122035B (en) * | 2006-08-11 | 2012-06-20 | 财团法人工业技术研究院 | Method for manufacturing copper foil |
| CN102965699A (en) * | 2012-11-20 | 2013-03-13 | 山东金盛源铜业有限公司 | Method for producing 6-mu m ultra-thin electrolytic copper foil |
| CN103436929A (en) * | 2013-08-02 | 2013-12-11 | 东莞华威铜箔科技有限公司 | Additive for electrolytic copper foil, and preparation method and application of additive |
| CN103469260A (en) * | 2013-09-27 | 2013-12-25 | 昆山纯柏精密五金有限公司 | Acid copper plating method of hardware |
| CN105603501A (en) * | 2016-01-17 | 2016-05-25 | 莫镇威 | Electrolytic copper foil surface treatment additive, preparation method, treatment method and device |
| CN106350836A (en) * | 2016-08-29 | 2017-01-25 | 灵宝华鑫铜箔有限责任公司 | Additive for electrodeposited copper foil and production technology for preparing electrodeposited copper foil for double-shiny battery |
| CN110042444A (en) * | 2019-05-10 | 2019-07-23 | 九江德福科技股份有限公司 | A kind of additive formulations improving copper foil surface uniformity |
| CN111041530A (en) * | 2019-12-30 | 2020-04-21 | 中国科学院青海盐湖研究所 | High-tensile-strength copper foil and preparation method and system thereof |
-
2004
- 2004-03-25 CN CN 200410017205 patent/CN1563502A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399604C (en) * | 2005-10-09 | 2008-07-02 | 北京中科天华科技发展有限公司 | Method for treating surface of copper foil of affluxion body in lithium ion batteries |
| CN101122035B (en) * | 2006-08-11 | 2012-06-20 | 财团法人工业技术研究院 | Method for manufacturing copper foil |
| CN102337566A (en) * | 2011-10-28 | 2012-02-01 | 广东嘉元科技股份有限公司 | Method for manufacturing ultrathin electrolytic copper foil for new energy resource power battery |
| CN102965699B (en) * | 2012-11-20 | 2015-06-24 | 山东金盛源铜业有限公司 | Method for producing 6-mu m ultra-thin electrolytic copper foil |
| CN102965699A (en) * | 2012-11-20 | 2013-03-13 | 山东金盛源铜业有限公司 | Method for producing 6-mu m ultra-thin electrolytic copper foil |
| CN103436929A (en) * | 2013-08-02 | 2013-12-11 | 东莞华威铜箔科技有限公司 | Additive for electrolytic copper foil, and preparation method and application of additive |
| CN103436929B (en) * | 2013-08-02 | 2016-01-20 | 东莞华威铜箔科技有限公司 | Additive for electrolytic copper foil, preparation method and application thereof |
| CN103469260A (en) * | 2013-09-27 | 2013-12-25 | 昆山纯柏精密五金有限公司 | Acid copper plating method of hardware |
| CN105603501A (en) * | 2016-01-17 | 2016-05-25 | 莫镇威 | Electrolytic copper foil surface treatment additive, preparation method, treatment method and device |
| CN106350836A (en) * | 2016-08-29 | 2017-01-25 | 灵宝华鑫铜箔有限责任公司 | Additive for electrodeposited copper foil and production technology for preparing electrodeposited copper foil for double-shiny battery |
| CN110042444A (en) * | 2019-05-10 | 2019-07-23 | 九江德福科技股份有限公司 | A kind of additive formulations improving copper foil surface uniformity |
| CN110042444B (en) * | 2019-05-10 | 2022-03-08 | 九江德福科技股份有限公司 | Additive formula for improving surface uniformity of copper foil |
| CN111041530A (en) * | 2019-12-30 | 2020-04-21 | 中国科学院青海盐湖研究所 | High-tensile-strength copper foil and preparation method and system thereof |
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