CN109234772A - A kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil - Google Patents
A kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil Download PDFInfo
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- CN109234772A CN109234772A CN201811048263.4A CN201811048263A CN109234772A CN 109234772 A CN109234772 A CN 109234772A CN 201811048263 A CN201811048263 A CN 201811048263A CN 109234772 A CN109234772 A CN 109234772A
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- Prior art keywords
- copper foil
- lithium ion
- chemical plating
- plating solution
- ion battery
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- General Chemical & Material Sciences (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention discloses a kind of Zn-Cr antioxygen chemical plating solution preparation method and the applications on lithium ion battery copper foil, its component and the content of each component are respectively zinc Zn100~1000ppm and chromium Cr500~2000ppm, preparation method is comprising steps of first soluble in water respectively in proportion by the soluble-salt of Zn and Cr, it is then added into the solution of phosphorus acid content 1%~5%, Zn, Cr concentration and pH value etc. required for adjusting, pH value are managed between 2~6；Application method of the invention, comprising the following steps: required temperature (15~60 DEG C) when adjustment production, in 1A/dm logical in anti-oxidant coating bath2~5A/dm2Electric current, back segment uses air knife and oven drying copper foil, copper foil surface made to have Zn, Cr coating, can effectively avoid copper foil and the problems in use in back segment, promote the service life and characteristic of product.
Description
Technical field
The present invention relates to a kind of anti-oxidation field more particularly to a kind of Zn-Cr antioxygen chemical plating solution preparation method and lithium from
Application on sub- battery copper foil.
Background technique
Requirement with the world to environmental protection is increasingly harsh, and motor vehicle exhaust emission environmental pollution is increasingly severe, each automobile
Manufacturer is in exploitation accumulator car without environment pollution, and to reduce environmental pollution, in electric car, providing power with lithium battery is
The heart of automobile, performance directly affect the traveling course continuation mileage of automobile, the driving safeties such as running of each instrument of automobile etc., therefore
To automobile dynamic lithium battery, material and components performance need to be assessed with caution, it is ensured that service performance, as important in lithium battery
Negative electrode material copper foil, anti-oxidation characteristics directly affect lithium battery in the product ear welding procedure of back segment, copper foil oxidation resistance
Difference, in product ear welding, negative electrode material copper foil surface easily blacks oxidation, and surface topography is poor, and conduction is not between battery plus-negative plate
It is good, the normal use of lithium battery is influenced, lithium battery is welded with ultrasonic bonding and laser welding, status one in back segment processing
As lithium battery using ultrasonic bonding to copper foil inoxidizability require it is lower, in order to make lithium battery can be in the different items of laser welding
It is carried out under part, can be carried out debugging for the inoxidizability of copper foil, with different formulations condition such as concentration, pH value and temperature, and production
Condition such as electric current etc. is respectively combined, and is tested and is assessed prior to laboratory room small-sized, then is amplified to production online production test assessment, simultaneously
It takes into account and produces online production stability and cost, institute's production sample, when emulating the more extreme welding condition such as temperature of client
Between assessed, it is comprehensive to grab the factory formula and working condition for being most suitable for welding condition.
Summary of the invention
Technical problem to be solved by the present invention lies in providing, a kind of formula is reasonable, manufacture craft science is perfect and practical
Antioxygen chemical plating solution production technology and its application method, i.e., a kind of Zn-Cr antioxygen chemical plating solution preparation method and in lithium-ion electric
Application on the copper foil of pond.
The technical problems to be solved by the invention are realized using following technical scheme:
A kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil, component and each component
Content be respectively zinc Zn100~1000ppm and chromium Cr500~2000ppm, preparation method comprising steps of
1) the ratio difference of Zn and Cr is soluble in water；
2) aqueous solution is added in the solution of phosphorus acid content 1%~5%, Zn and Cr concentration required for adjusting and pH
Value etc., pH value are managed between 2~6；
Application method of the invention, comprising the following steps:
1) temperature adjustment, adjustment required temperature (15~60 DEG C) when producing；
2) it is electroplated, in 1A/dm logical in anti-oxidant coating bath2~5A/dm2Electric current；
3) dry, so that copper foil surface is had Zn, Cr coating.
Further: the Zn and Cr is dissolved in the soluble-salt that water uses Zn and Cr.
Further: the drying is that copper foil is dried using air knife and baking oven.
Compared with prior art, the present invention can effectively avoid copper foil and the problems in use in back segment, promote the use of product
Service life and characteristic.
Specific embodiment
In order to which the technological means and creation characteristic that realize the present invention are easy to understand, the present invention is further explained below
It states.
Embodiment 1:
Specific step is as follows for a kind of Zn-Cr antioxygen chemical plating solution, production method and use:
1) soluble-salt for taking Zn and Cr, is dissolved in water；
2) aqueous solution of preparation is added in the solution of phosphorus acid content 1%~5%, adjustment solution concentration Zn:100~
200ppm and Cr:1000~1500ppm, makes pH value reach 4~5；
3) adjustment temperature is 40~50 DEG C；
4) by copper foil after anti-oxidant coating bath, with 1~2A/dm2Current density be electroplated 0.3~0.5s；
5) anti-oxidation characteristics of copper foil are directed to, under 160 DEG C of environment, 20min is put, confirms lithium ion battery copper foil surface
Oxidation states.
The Zn-Cr antioxygen chemical plating solution is shown in Table 1 to the anti-oxidation characteristics experimental result of lithium ion battery copper foil.
Embodiment two:
Specific step is as follows for a kind of Zn-Cr antioxygen chemical plating solution, production method and use:
1) soluble-salt for taking Zn and Cr, is dissolved in water；
2) aqueous solution of preparation is added in the solution of phosphorus acid content 1%~5%, adjusts solution concentration Zn:Zn:400
~800ppm and Cr:500~1000ppm, makes pH value reach 3~4；
3) adjustment temperature is 40~50 DEG C；
4) by copper foil after anti-oxidant coating bath, with 1~2A/dm2Current density be electroplated 0.1~0.3s；
5) anti-oxidation characteristics of copper foil are directed to, under 160 DEG C of environment, 20min is put, confirms lithium ion battery copper foil surface
Oxidation states.
The Zn-Cr antioxygen chemical plating solution is shown in Table 1 to the anti-oxidation characteristics experimental result of lithium ion battery copper foil.
Embodiment three:
Specific step is as follows for a kind of Zn-Cr antioxygen chemical plating solution, production method and use:
1) soluble-salt for taking Zn and Cr, is dissolved in water；
2) aqueous solution of preparation is added in the solution of phosphorus acid content 1%~5%, adjustment solution concentration Zn:1000~
2000ppm and Cr:100~200ppm, makes pH value reach 5~6；
3) adjustment temperature is 40~50 DEG C；
4) by copper foil after anti-oxidant coating bath, with 1~2A/dm2Current density be electroplated 0.5~1s；
5) anti-oxidation characteristics of copper foil are directed to, under 160 DEG C of environment, 20min is put, confirms lithium ion battery copper foil surface
Oxidation states.
The Zn-Cr antioxygen chemical plating solution is shown in Table 1 to the anti-oxidation characteristics experimental result of lithium ion battery copper foil.Table 1: each time
As a result:
Constituent analysis is carried out for lithium ion battery copper foil surface coating with inductively coupled plasma sub-ray spectrometer
| Number | Zn content | Cr content | Zn, Cr content ratio | Copper foil surface situation |
| Embodiment one | 40 | 50 | 4:5 | Oxidation |
| Embodiment two | 150 | 40 | 15:4 | Slight oxidation |
| Embodiment three | 180 | 30 | 6:1 | Non-oxidation |
It can be obtained by experimental data, the content of Zn is higher, and copper foil anti-oxidation characteristics are better, the content and plating of copper foil surface Cr
Relationship it is little.
It is demonstrated experimentally that the content of a kind of Zn-Cr antioxygen chemical plating solution, component and each component is respectively Zn and Cr, Zn element
The copper of ground can effectively be completely cut off in conjunction with the oxygen in air and water, ground is protected not to be damaged, in the chemically, the gold of zinc
Belong to activity command compared with work in copper sprinkle, also can first make self-sacrifice, further achieve the purpose that protect ground it is not oxidized fall, Cr element
Will form one layer of chromium thin film after electroplated, it has good heat resistance, and chrome layer has good chemical stability, with alkali and
Most acid do not react, and then protect ground, keep the stability of ground copper more preferable.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Object defines.
Claims (3)
1. a kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil, component and each component
Content is respectively zinc Zn100~1000ppm and chromium Cr500~2000ppm, preparation method comprising steps of
1) the ratio difference of Zn and Cr is soluble in water；
2) aqueous solution is added in the solution of phosphorus acid content 1%~5%, Zn and Cr concentration required for adjusting and pH value
Deng between pH value control 2~6；
Application method of the invention, comprising the following steps:
1) temperature adjustment, adjustment required temperature (15~60 DEG C) when producing；
2) it is electroplated, in 1A/dm logical in anti-oxidant coating bath2~5A/dm2Electric current；
3) dry, so that copper foil surface is had Zn, Cr coating.
2. according to right want 1 described in a kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil,
It is characterized by: the Zn and Cr are dissolved in the soluble-salt that water uses Zn and Cr.
3. according to right want 1 described in a kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil,
It is characterized by: the drying is that copper foil is dried using air knife and baking oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048263.4A CN109234772A (en) | 2018-09-10 | 2018-09-10 | A kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048263.4A CN109234772A (en) | 2018-09-10 | 2018-09-10 | A kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil |
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| CN109234772A true CN109234772A (en) | 2019-01-18 |
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| CN201811048263.4A Pending CN109234772A (en) | 2018-09-10 | 2018-09-10 | A kind of Zn-Cr antioxygen chemical plating solution preparation method and the application on lithium ion battery copper foil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101179A (en) * | 2019-12-30 | 2020-05-05 | 禹象铜箔(浙江)有限公司 | Electrodeposition treatment method of copper foil and composite copper foil material |
| CN114214704A (en) * | 2021-12-30 | 2022-03-22 | 铜陵市华创新材料有限公司 | Passivation process of ultrathin double-sided photo-lithium battery copper foil |
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| CN1962944A (en) * | 2006-11-28 | 2007-05-16 | 招远金宝电子有限公司 | Gray surface treatment process for electrolytic copper foil |
| CN101906630A (en) * | 2010-08-03 | 2010-12-08 | 山东金宝电子股份有限公司 | Black surface treatment process of electrolytic copper foil |
| CN103469267A (en) * | 2013-08-07 | 2013-12-25 | 江西铜业股份有限公司 | Process method for carrying out surface treatment on electrolysis copper foil, and cooper foil treated by using the same |
| CN104779367A (en) * | 2014-01-15 | 2015-07-15 | 金居开发铜箔股份有限公司 | Heat-resisting lithium battery copper foil and manufacturing method thereof |
| JP2015198020A (en) * | 2014-04-01 | 2015-11-09 | 古河電気工業株式会社 | Surface treatment copper foil for negative electrode, negative electrode and lithium ion secondary battery using the same |
| CN106757245A (en) * | 2016-11-16 | 2017-05-31 | 山东金宝电子股份有限公司 | A kind of process of surface treatment of melanism Copper Foil |
| CN106972175A (en) * | 2016-01-14 | 2017-07-21 | 长春石油化学股份有限公司 | Surface treatment copper foil |
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2018
- 2018-09-10 CN CN201811048263.4A patent/CN109234772A/en active Pending
Patent Citations (7)
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| CN1962944A (en) * | 2006-11-28 | 2007-05-16 | 招远金宝电子有限公司 | Gray surface treatment process for electrolytic copper foil |
| CN101906630A (en) * | 2010-08-03 | 2010-12-08 | 山东金宝电子股份有限公司 | Black surface treatment process of electrolytic copper foil |
| CN103469267A (en) * | 2013-08-07 | 2013-12-25 | 江西铜业股份有限公司 | Process method for carrying out surface treatment on electrolysis copper foil, and cooper foil treated by using the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101179A (en) * | 2019-12-30 | 2020-05-05 | 禹象铜箔(浙江)有限公司 | Electrodeposition treatment method of copper foil and composite copper foil material |
| CN111101179B (en) * | 2019-12-30 | 2022-03-15 | 禹象铜箔(浙江)有限公司 | Electrodeposition treatment method of copper foil and composite copper foil material |
| CN114214704A (en) * | 2021-12-30 | 2022-03-22 | 铜陵市华创新材料有限公司 | Passivation process of ultrathin double-sided photo-lithium battery copper foil |
| CN114214704B (en) * | 2021-12-30 | 2023-09-12 | 江西华创新材有限公司 | Passivation process of ultrathin double-sided photo-lithium electric copper foil |
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