CN105624450A - Porous foam nickel cobalt material preparation method - Google Patents
Porous foam nickel cobalt material preparation method Download PDFInfo
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- CN105624450A CN105624450A CN201410576524.5A CN201410576524A CN105624450A CN 105624450 A CN105624450 A CN 105624450A CN 201410576524 A CN201410576524 A CN 201410576524A CN 105624450 A CN105624450 A CN 105624450A
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Abstract
The present invention provides a porous foam nickel cobalt material preparation method, which comprises electric conduction treatment of porous sponge substrate, electrodeposition of nickel, electrodeposition of cobalt, re-deposition of nickel, and heat treatment. According to the present invention, the process of the preparation method is simple; and the porous foam nickel cobalt alloy material prepared through the preparation method has the uniform crystal structure, effectively improves the problems of easy breaking and excessively high internal resistance during the application of the material in the electrode process, and can meet the requirements of the power type lithium ion battery.
Description
Technical field
The preparation method that the present invention relates to a kind of foam porous metal material, particularly to the preparation method of a kind of porous foam nickel cobalt material.
Background technology
Foam metal material, owing to having tridimensional network, has bigger specific surface area, is widely used as anode plate material. Existing anode current collector of lithium ion battery materials'use is all the smooth metal foil material of plane, because smooth planar materials specific surface area is relatively low, in electrode active material filling process, cause that loading is on the low side, the technical failures such as inserts comes off, badly influence normally manufacturing and the chemical property of battery of battery product.
Summary of the invention
It is desirable to provide the preparation method of a kind of high-performance, onboard power lithium ion cell positive baseplate material foamed nickel-cobalt alloy material.
The present invention is realized by below scheme:
The preparation method of a kind of porous foam nickel cobalt material, adopts following process:
Adopt conventional physical gas-phase deposite method at aperture 100-300um, thickness 1.0-3.0mm, the polyurethane cellular sponge surface deposition nickel of percent opening 50-80% carries out conductionization, mandruka matrix after conductive treatment is electroplated 50-200g/m2 nickel, 50-100g/m2 cobalt is electroplated again on the matrix after electric deposition nickel, then re-plating 50-100g/m2 nickel in the material matrix cover cobalt again, finally by 300-500 DEG C of high temperature incineration, remove sponge matrix, at 800-1200 DEG C, the gas shield of 30% hydrogen and 70% nitrogen carries out high temperature reduction process, obtain.
The technique of described plating cobalt is: cobaltous sulfate 150-200g/L, sodium citrate 10-20g/L, ammonium sulfate 5-10g/L, sodium chloride 10-20g/L, pH3.5-4.5, temperature 40-50 DEG C, electric current density 2.0-4.5A/dm2.
Compared with prior art, advantages of the present invention is embodied in:
1. the method for the present invention, technique is simple, it is easy to accomplish large-scale production.
2. use the foamed nickel-cobalt alloy material that the inventive method prepares, there is more uniform crystal structure, effectively enhance compactness and the intensity of foam interior hole connection structure, improve electric conductivity and the corrosion resistance of material, effectively improve foam nickel cobalt material for electrodes of lithium-ion batteries preparation process easily occurs the problem ruptured and internal resistance is excessive, more can meet the needs of onboard power lithium ion battery.
Accompanying drawing explanation
The electrochemical impedance detection comparison diagram of the battery that the foam nickel cobalt that Fig. 1 embodiment 1 method prepares and existing usual foam nickel make respectively.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but the invention is not limited in the statement of embodiment.
Embodiment 1
The preparation method of a kind of porous foam nickel cobalt material, adopts following process:
Adopt conventional physical gas-phase deposite method at aperture 100um, thickness 1.0mm, the polyurethane cellular sponge surface deposition nickel of percent opening 50% carries out conductionization, on the basis of common Watt Ni deposition technique, plated metal nickel 50g/m2, again at cobaltous sulfate 150g/L, sodium citrate 10g/L, ammonium sulfate 5g/L, sodium chloride 10g/L, pH3.5, temperature 40 DEG C, under the process conditions of electric current density 2.0A/dm2, substrate material surface in nickel plating electroplates cobalt 50g/m2, common watts nickel skill is adopted to answer nickel plating 50g/m2 again after having plated cobalt again, finally by 300 DEG C of high temperature incinerations of temperature, remove sponge matrix, at 800 DEG C, the gas shield of 30% hydrogen and 70% nitrogen carries out high temperature reduction, obtain porous foam nickel cobalt material.
By the porous foam nickel cobalt material prepared through embodiment 1 method and existing usual foam nickel, it is fabricated to lithium ion battery respectively and carries out the electrochemical impedance test of battery, test result is as shown in Figure 1, from figure it is evident that, through the lithium ion battery prepared by the foamed nickel-cobalt alloy material that embodiment 1 method prepares, there is broader impedance spectrum, the chemical internal resistance representing battery is lower, more can effectively promote the overall chemical property of battery.
Embodiment 2
The preparation method of a kind of porous foam nickel cobalt material, adopts following process:
Adopt conventional physical gas-phase deposite method at aperture 200um, thickness 2.0mm, the polyurethane cellular sponge surface deposition nickel of percent opening 70% carries out conductionization, on the basis of common Watt Ni deposition technique, plated metal nickel 100g/m2, again at cobaltous sulfate 180g/L, sodium citrate 15g/L, ammonium sulfate 8g/L, sodium chloride 15g/L, pH4.0, temperature 45 C, under the process conditions of electric current density 3.5A/dm2, substrate material surface in nickel plating electroplates cobalt 80g/m2, common watts nickel skill is adopted to answer nickel plating 80g/m2 again after having plated cobalt again, finally by 400 DEG C of high temperature incinerations of temperature, remove sponge matrix, at 1000 DEG C, the gas shield of 30% hydrogen and 70% nitrogen carries out high temperature reduction, obtain porous foam nickel cobalt material.
Embodiment 3
The preparation method of a kind of porous foam nickel cobalt material, adopts following process:
Adopt conventional physical gas-phase deposite method at aperture 300um, thickness 3.0mm, the polyurethane cellular sponge surface deposition nickel of percent opening 80% carries out conductionization, on the basis of common Watt Ni deposition technique, plated metal nickel 200g/m2, again at cobaltous sulfate 200g/L, sodium citrate 20g/L, ammonium sulfate 10g/L, sodium chloride 20g/L, pH4.5, temperature 50 C, under the process conditions of electric current density 4.5A/dm2, substrate material surface in nickel plating electroplates cobalt 100g/m2, common watts nickel skill is adopted to answer nickel plating 100g/m2 again after having plated cobalt again, finally by 500 DEG C of high temperature incinerations of temperature, remove sponge matrix, at 1200 DEG C, the gas shield of 30% hydrogen and 70% nitrogen carries out high temperature reduction, obtain porous foam nickel cobalt material.
Claims (2)
1. the preparation method of a porous foam nickel cobalt material, nickel heat treatment is deposited again including mandruka base material conduction chemical/electrodeposition electrodeposition of nickel cobalt, it is characterized in that, adopt conventional physical gas-phase deposite method at aperture 100-300um, thickness 1.0-3.0mm, the polyurethane cellular sponge surface deposition nickel of percent opening 50-80% carries out conductionization, mandruka matrix after conductive treatment is electroplated 50-200g/m2 nickel, 50-100g/m2 cobalt is electroplated again on the matrix after electric deposition nickel, then re-plating 50-100g/m2 nickel in the material matrix cover cobalt again, finally by 300-500 DEG C of high temperature incineration, remove sponge matrix, at 800-1200 DEG C, the gas shield of 30% hydrogen and 70% nitrogen carries out high temperature reduction process, obtain.
2. the preparation method of porous foam nickel cobalt material as claimed in claim 1, it is characterized in that, the technique of described plating cobalt is: cobaltous sulfate 150-200g/L, sodium citrate 10-20g/L, ammonium sulfate 5-10g/L, sodium chloride 10-20g/L, pH3.5-4.5, temperature 40-50 DEG C, electric current density 2.0-4.5A/dm2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410576524.5A CN105624450A (en) | 2014-10-26 | 2014-10-26 | Porous foam nickel cobalt material preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410576524.5A CN105624450A (en) | 2014-10-26 | 2014-10-26 | Porous foam nickel cobalt material preparation method |
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| CN105624450A true CN105624450A (en) | 2016-06-01 |
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| CN201410576524.5A Pending CN105624450A (en) | 2014-10-26 | 2014-10-26 | Porous foam nickel cobalt material preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086779A (en) * | 2016-06-06 | 2016-11-09 | 王华胜 | A kind of micro-or nano size circulation aperture cellular solid and preparation method thereof |
| CN109806664A (en) * | 2017-11-22 | 2019-05-28 | 辽宁法库陶瓷工程技术研究中心 | A kind of preparation method of resistance to 1000 DEG C of metallic high temperature filters |
| CN113328103A (en) * | 2021-05-13 | 2021-08-31 | 深圳先进储能材料国家工程研究中心有限公司 | Preparation method of base material for gas diffusion layer of fuel cell |
-
2014
- 2014-10-26 CN CN201410576524.5A patent/CN105624450A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086779A (en) * | 2016-06-06 | 2016-11-09 | 王华胜 | A kind of micro-or nano size circulation aperture cellular solid and preparation method thereof |
| CN109806664A (en) * | 2017-11-22 | 2019-05-28 | 辽宁法库陶瓷工程技术研究中心 | A kind of preparation method of resistance to 1000 DEG C of metallic high temperature filters |
| CN109806664B (en) * | 2017-11-22 | 2022-03-04 | 辽宁省轻工科学研究院有限公司 | Preparation method of 1000 ℃ resistant metal high-temperature filter |
| CN113328103A (en) * | 2021-05-13 | 2021-08-31 | 深圳先进储能材料国家工程研究中心有限公司 | Preparation method of base material for gas diffusion layer of fuel cell |
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Application publication date: 20160601 |