CN101481811A - Additive for manufacturing ultrathin electrolytic copper foil - Google Patents
Additive for manufacturing ultrathin electrolytic copper foil Download PDFInfo
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- CN101481811A CN101481811A CNA2009100365936A CN200910036593A CN101481811A CN 101481811 A CN101481811 A CN 101481811A CN A2009100365936 A CNA2009100365936 A CN A2009100365936A CN 200910036593 A CN200910036593 A CN 200910036593A CN 101481811 A CN101481811 A CN 101481811A
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Abstract
The invention relates to an additive for manufacturing ultrathin electrolytic copper coil, which is characterized in that the additive is prepared by 300-800 milligram of acid amide, 20-40 milligram of casein, 5-10 milligram of tetrahydro-thiazoles sulfur copper, 5-10 milligram of polyethyleneglycol, and 40-50 milligram of gelatin which are added into per 10000 liter deionized water and well blended. The electrolytic copper coil with high performance ,which is manufactured by the additive and used in lithium ion batteries with high capacity, has basically consistent double sided structure, namely, double sided light copper coil; the thickness of the copper coil is thin; the actually measured thickness & is less than equal to 12micron; the crystal structure of the rough surface is uniform, smooth and compact; the metal density is close to the theoretical density of pure copper; the profile tolerance of the rough surface Rz is less than 2 micron; and the elongation is larger than 5%; the tensile strength is larger than 400N/mm2; the thickness extreme difference of the copper coil with the same mass area ratio is less than equal to 0.5 micron.
Description
Technical field
The present invention relates to a kind of additive that lithium ion battery need be used with ultrathin electrolytic copper foil of making.
Background technology
Make the additive that ultrathin electrolytic copper foil is used at present, the additive that mostly adopts gelatin, thiocarbamide etc. to form, the electrolytic copper foil product appearance quality and the interior quality of manufacturing differ greatly, and thickness evenness is poor, crystalline structure is thicker loose, and tensile strength is lower≤350N/mm
2, unit elongation is lower≤2%, and the volume capacity of the lithium ion battery that makes with the Copper Foil of this kind additive manufacturing is smaller, and the internal resistance of cell is bigger, has shortened the work-ing life of battery, easily breaks down in charge and discharge process.
Summary of the invention
Purpose of the present invention just provides a kind of additive that ultrathin electrolytic copper foil is used of making, and it is good to make the ultrathin electrolytic copper foil of manufacturing have a high-elongation, high-tensile, thickness evenness.
The present invention can realize in the following manner: make additive that ultrathin electrolytic copper foil uses and be by adding 300～800 milligrams of acid amides, 20～40 milligrams of casein food grade, 5～10 milligrams of thiazolidine sulphur copper, 5～10 milligrams of polyoxyethylene glycol, 40～50 milligrams of gelatin mixings in per 10000 liters of deionized waters and form.
Make additive that ultrathin electrolytic copper foil uses and also can be by adding 300～800 milligrams of acid amides, 20～40 milligrams of casein food grade, 5～10 milligrams of thiazolidine sulphur copper, 5～10 milligrams of polyoxyethylene glycol, 40～50 milligrams of gelatin, 100～200 milligrams of dithio-bis-propylene sulfonic acid sodium salts, 20～80 milligrams of villaumite mixings in per 10000 liters of deionized waters and form.Villaumite is top grade pure sodium chloride, Repone K or hydrochloric acid.
With the high capacity lithium ion battery high performance electrolytic copper foil that additive of the present invention is made, having the bilateral structure basically identical promptly is two-sided smooth Copper Foil, thin thickness, actual measurement Hou Du ﹠amp; ≤ 12 microns, the Copper Foil of same units area quality record thickness extreme difference≤0.5 micron, and evenly level and smooth fine and close, the density metal of hair side crystalline structure is near fine copper theoretical density, hair side profile tolerance Ra＜0.3 micron, hair side profile tolerance Rz＜2 microns, unit elongation〉5%, tensile strength 400N/mm
2With the carbon pulp material when bonding, became uneven appears in the carbon slurry that can avoid being coated on the Copper Foil, can obviously reduce the contact resistance between negative current collector and the negative material, significantly improve the volume capacity ratio of lithium ion battery, the negative current collector that makes has good cold-resistant hot expansibility, crosses to be difficult for producing fracture when discharging and recharging, can improve lithium ion battery charge and discharge cycles number of times greatly, prolong the work-ing life of lithium cell.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but it is not represented as unique embodiment of the present invention.
Embodiment one
The additive that the manufacturing ultrathin electrolytic copper foil is used is to be mixed and formed by 300 milligrams of acid amides of adding, 20 milligrams of casein food grade, 5 milligrams of thiazolidine sulphur copper, 5 milligrams of polyoxyethylene glycol, 40 milligrams of gelatin in 10000 liters of deionized waters.
Embodiment two
The additive that the manufacturing ultrathin electrolytic copper foil is used is to be mixed and formed by 800 milligrams of acid amides of adding, 40 milligrams of casein food grade, 10 milligrams of thiazolidine sulphur copper, 10 milligrams of polyoxyethylene glycol, 50 milligrams of gelatin in 10000 liters of deionized waters.
Embodiment three
The additive that the manufacturing ultrathin electrolytic copper foil is used also can be to be mixed and formed by 300 milligrams of acid amides of adding, 20 milligrams of casein food grade, 5 milligrams of thiazolidine sulphur copper, 5 milligrams of polyoxyethylene glycol, 40 milligrams of gelatin, 100 milligrams of dithio-bis-propylene sulfonic acid sodium salts, 20 milligrams of top grade pure sodium chlorides in 10000 liters of deionized waters.
Embodiment four
Make additive that ultrathin electrolytic copper foil uses and also can be by adding 800 milligrams of acid amides, 40 milligrams of casein food grade, 10 milligrams of thiazolidine sulphur copper, 10 milligrams of polyoxyethylene glycol, 50 milligrams of gelatin, 200 milligrams of dithio-bis-propylene sulfonic acid sodium salts, 80 milligrams of pure Repone K of top grade or hydrochloric acid mixing in 10000 liters of deionized waters and form.
When additive of the present invention is used to make ultrathin electrolytic copper foil, the copper sulfate electrolyte of content of copper ion 80～120g/L, sulfuric acid content 140～200g/L is heated to 45～55 ℃, and with of the strainer filtration of copper sulfate electrolyte process precision less than 1 micron, the distance of anode and cathode is 10～20mm, current density 5000～8000A/m
2, in process of production above-mentioned additive is added continuously in the copper-bath, under the galvanic effect of constant pressure and flow,, just can obtain ultrathin electrolytic copper foil at negative electrode by electrochemical reaction.
The ultrathin electrolytic copper foil that the present invention makes is after testing: weight per unit area is at 70～90g/m
2, unit elongation 5%, hair side profile tolerance Ra＜0.3 micron, hair side profile tolerance Rz＜2 microns, thickness is 8～12 microns, tensile strength 400N/mm
2, mass resistivity≤0.166 Ω .g/m
2, copper purity 〉=99.9%.
Claims (3)
1, a kind ofly makes the additive that ultrathin electrolytic copper foil is used, it is characterized in that additive is to form by adding 300～800 milligrams of acid amides, 20～40 milligrams of casein food grade, 5～10 milligrams of thiazolidine sulphur copper, 5～10 milligrams of polyoxyethylene glycol, 40～50 milligrams of gelatin mixings in per 10000 liters of deionized waters.
2, a kind ofly make the additive that ultrathin electrolytic copper foil is used, it is characterized in that additive is to form by adding 300～800 milligrams of acid amides, 20～40 milligrams of casein food grade, 5～10 milligrams of thiazolidine sulphur copper, 5～10 milligrams of polyoxyethylene glycol, 40～50 milligrams of gelatin, 100～200 milligrams of dithio-bis-propylene sulfonic acid sodium salts, 20～80 milligrams of villaumite mixings in per 10000 liters of deionized waters.
3, the additive used of manufacturing ultrathin electrolytic copper foil according to claim 2 is characterized in that described villaumite is top grade pure sodium chloride, Repone K or hydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100365936A CN101481811A (en) | 2009-01-12 | 2009-01-12 | Additive for manufacturing ultrathin electrolytic copper foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100365936A CN101481811A (en) | 2009-01-12 | 2009-01-12 | Additive for manufacturing ultrathin electrolytic copper foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101481811A true CN101481811A (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100365936A Pending CN101481811A (en) | 2009-01-12 | 2009-01-12 | Additive for manufacturing ultrathin electrolytic copper foil |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363891A (en) * | 2011-11-18 | 2012-02-29 | 山东金宝电子股份有限公司 | Double photoelectrolysis copper foil replacing rolled copper foil and used for production of flexible copper clad laminate, and production process of double photoelectrolysis copper foil |
| CN102418121A (en) * | 2011-12-20 | 2012-04-18 | 广东嘉元科技股份有限公司 | Additive for manufacturing ultrathin electrolytic copper foil |
| CN106987871A (en) * | 2017-03-12 | 2017-07-28 | 山东金盛源电子材料有限公司 | A kind of production method of three-dimensional porous electrolytic copper foil applied to gel polymer lithium ion battery |
| CN108560025A (en) * | 2018-06-14 | 2018-09-21 | 九江德福科技股份有限公司 | A kind of preparation method of electrolytic copper foil |
| CN108677222A (en) * | 2018-06-14 | 2018-10-19 | 九江德福科技股份有限公司 | A kind of electrolyte and production technology being used to prepare lithium electrolytic copper foil |
| CN111254464A (en) * | 2020-01-17 | 2020-06-09 | 广东嘉元科技股份有限公司 | Preparation method of ultrathin electrolytic copper foil for high-tensile-strength lithium ion battery |
| CN111607810A (en) * | 2020-07-14 | 2020-09-01 | 安徽铜冠铜箔集团股份有限公司 | Efficient production method of ultrathin electrolytic copper foil |
| CN113322497A (en) * | 2021-04-25 | 2021-08-31 | 浙江花园新能源有限公司 | Double-sided light ultrathin electrolytic copper foil for lithium battery and manufacturing method thereof |
-
2009
- 2009-01-12 CN CNA2009100365936A patent/CN101481811A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363891A (en) * | 2011-11-18 | 2012-02-29 | 山东金宝电子股份有限公司 | Double photoelectrolysis copper foil replacing rolled copper foil and used for production of flexible copper clad laminate, and production process of double photoelectrolysis copper foil |
| CN102418121A (en) * | 2011-12-20 | 2012-04-18 | 广东嘉元科技股份有限公司 | Additive for manufacturing ultrathin electrolytic copper foil |
| CN106987871A (en) * | 2017-03-12 | 2017-07-28 | 山东金盛源电子材料有限公司 | A kind of production method of three-dimensional porous electrolytic copper foil applied to gel polymer lithium ion battery |
| CN108560025A (en) * | 2018-06-14 | 2018-09-21 | 九江德福科技股份有限公司 | A kind of preparation method of electrolytic copper foil |
| CN108677222A (en) * | 2018-06-14 | 2018-10-19 | 九江德福科技股份有限公司 | A kind of electrolyte and production technology being used to prepare lithium electrolytic copper foil |
| CN108560025B (en) * | 2018-06-14 | 2020-01-21 | 九江德福科技股份有限公司 | Preparation method of electrolytic copper foil |
| CN111254464A (en) * | 2020-01-17 | 2020-06-09 | 广东嘉元科技股份有限公司 | Preparation method of ultrathin electrolytic copper foil for high-tensile-strength lithium ion battery |
| CN111607810A (en) * | 2020-07-14 | 2020-09-01 | 安徽铜冠铜箔集团股份有限公司 | Efficient production method of ultrathin electrolytic copper foil |
| CN113322497A (en) * | 2021-04-25 | 2021-08-31 | 浙江花园新能源有限公司 | Double-sided light ultrathin electrolytic copper foil for lithium battery and manufacturing method thereof |
| CN113322497B (en) * | 2021-04-25 | 2022-05-24 | 浙江花园新能源股份有限公司 | Double-sided light ultrathin electrolytic copper foil for lithium battery and manufacturing method thereof |
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Open date: 20090715 |