CN102492966A - Foam nickel with ultra-low surface density and high aperture ratio and manufacturing method thereof - Google Patents
Foam nickel with ultra-low surface density and high aperture ratio and manufacturing method thereof Download PDFInfo
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- CN102492966A CN102492966A CN2011104348250A CN201110434825A CN102492966A CN 102492966 A CN102492966 A CN 102492966A CN 2011104348250 A CN2011104348250 A CN 2011104348250A CN 201110434825 A CN201110434825 A CN 201110434825A CN 102492966 A CN102492966 A CN 102492966A
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Abstract
The invention relates to a manufacturing method for foam nickel and particularly discloses foam nickel with ultra-low surface density and high aperture ratio and the manufacturing method for the foam nickel. The manufacturing method for the foam nickel with ultra-low surface density and high aperture ratio comprises the processes of substrate conductive treatment, electro-deposition nickel plating and thermal treatment under a hydrogen atmosphere by using polyurethane foam as a substrate and is characterized by adding a polyurethane foam hole type combing process before substrate conductive treatment. The manufacturing method has the beneficial effects: as the hole type combing process is added before the conductive treatment of the polyurethane foam, the original structures of hole types of the foam are changed, the aperture ratio of the foam is increased, the difference between the lengthwise direction and the transverse direction is eliminated, the physical performances of the foam nickel manufactured by using the foam as the substrate are obviously improved while the surface density of the foam nickel is reduced, and the manufactured foam nickel is suitable for high-end products for promoting the performances of batteries and low-end products for reducing material cost, and can be used for manufacturing power batteries with high power capacity.
Description
(1) technical field
The present invention relates to a kind of making method of nickel foam, nickel foam of particularly a kind of ultralow area density, high opening rate and preparation method thereof.
(2) background technology
Regular foam nickel material (as: spongy foam nickel material) is as having porous metallic nickel web plate; It is a kind of material that is used for the manufacture batteries electrode; Its basic production technique mainly comprises: at first with the continuous conductionization of polyurethane foam; Next carries out galvanic deposit, and last thermal treatment is removed the continuous matrix of bubble and changed the crystalline structure of nickel.Wherein, the conductionization processing generally comprises electroless plating, coating conductive glue and vacuum and plates three kinds, and galvanic deposit is nickel plating in nickel salt, and thermal treatment high temperature under reducing atmosphere carries out.Regular foam nickel is as the collector of battery electrode and the carrier of active substance; During the manufacture batteries battery lead plate, utilize these spaces, plate active material is fully used; The augmenting response area; Reduce internal resistance, thereby improve battery performance, but the area density of the regular foam nickel of producing at present is all at 250 g/m
2More than, there is notable difference in vertical, horizontal, and percentage of open area is lower, and to improving the loading level of cell active materials, the quality of raising battery etc. has big difficulty, is difficult to adapt to the growth requirement of power cell.
(3) summary of the invention
The present invention provides a kind of area density, the ultralow area density that increases the continuous percentage of open area of bubble, nickel foam of high opening rate and preparation method thereof of reducing in order to remedy the deficiency of prior art.
The present invention realizes through following technical scheme:
The nickel foam of a kind of ultralow area density, high opening rate is characterized in that: said nickel foam area density is 150～200g/m
2, thickness is 1.0～1.6 mm.
The making method of the nickel foam of this ultralow area density, high opening rate; With the polyurethane foam silk floss as matrix; Comprise heat treatment process under the processing of matrix conductionization, electrodeposit nickel plating and the hydrogen atmosphere, it is characterized in that: the process that before the processing of matrix conductionization, increases the continuous pass combing of polyurethane foam.
The making method of the nickel foam of this ultralow area density, high opening rate is characterized in that: comprise the steps:
(ⅰ) the continuous pass combing of polyurethane foam: the polyurethane foam silk floss is carried out the pass combing, change the continuous pass structure of original bubble, eliminate the difference between the continuous vertical, horizontal of bubble;
(ⅱ) matrix conductionization processing: the polyurethane foam silk floss of pass combing purges the moisture of carrying secretly in the polyurethane foam silk floss, liquid, gas and impurity through the method for forvacuum; Utilize the method conduction processing of magnetic control vacuum sputtering at last, make the continuous matrix of conductionization polyurethane foam;
(ⅲ) electrodeposit nickel plating: polyurethane foam silk floss first certainty ratio through 5%～10% after the conductionization processing stretches, and carries out electroforming with the galvanic deposit mode then, forms the nickel foam of different facial density;
(ⅳ) thermal treatment under the hydrogen atmosphere: will still remain in the continuous skeleton of the inner polyurethane foam of nickel foam and burn its removing through naked light; Remove continuous resistates of the bubble that does not fully decompose as yet and the surperficial carbon distribution that retains of middle article through high temperature oxidation process then; Under atmosphere of hydrogen, reduce sintering at last; Improve its crystalline structure, obtain the nickel foam of ultralow area density, high opening rate.
The continuous pass combing of the middle polyurethane foam of step (ⅰ) comprises that oxidation dissolution, reduction, one-level cleaning, secondary clean, push drying, drying, reforming and accessory circulation, driving control system.
The galvanic deposit mode is the zonal mode of working continuously of serialization in the step (ⅲ).
The galvanic deposit tank liquor is sulfamate type or sulfate-type in the step (ⅲ), and its processing parameter is following:
(A) proportioning of sulfamate type plating bath and parameter:
Nickel sulfamic acid [Ni (NH
2SO
3)
24H
2O] 350～550g/L
Nickelous chloride (NiCl
26H
2O) 7～15g/L
Sodium Fluoride (NaF) 2～5g/L
Boric acid (H
3BO
3) 30～50g/L
PH value 3.0～3.5
40～50 ℃ of temperature
(B) proportioning of sulfate-type plating bath and parameter:
Single nickel salt (NiSO
47H
2O) 200～300g/L
Nickelous chloride (NiCl
26H
2O) 25～50g/L
Boric acid (H
3BO
3) 35～45g/L
PH value 4.0～4.5
40～55 ℃ of temperature.
The beneficial effect of nickel foam of the ultralow area density of the present invention, high opening rate and preparation method thereof is: the process that before the continuous conductionization processing of polyurethane foam, has increased the pass combing; Changed the continuous pass original structure of bubble; Increased the continuous percentage of open area of bubble; Eliminated the difference between the vertical, horizontal, the nickel foam of making as matrix when reducing area density, its each item physicals be improved significantly; The nickel foam of producing not only is applicable to high-end product lifting battery performance but also be applicable to that low-end product reduces material cost, can make the heavy body power cell.
(4) description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
The nickel foam process flow sheet of Fig. 1 ultralow area density, high opening rate for the present invention makes;
Fig. 2 makes the pass carding equipment structural representation of nickel foam for the present invention;
Fig. 3 is the process flow sheet of matrix conductionization of the present invention processing;
Fig. 4 is the process flow sheet of electrodeposit nickel plating of the present invention;
Fig. 5 is process of thermal treatment schema under the hydrogen atmosphere of the present invention.
Among the figure, 1 oxidation dissolution, 2 reduction, 3 one-levels are cleaned, and 4 secondarys clean, and 5 extruding are dry, 6 drying, reformings.
(5) embodiment
The nickel foam area density of this ultralow area density, high opening rate is 150～200g/m
2, thickness is 1.0～1.6 mm, can make the heavy body power cell.
The making method of the nickel foam of this ultralow area density, high opening rate; With the polyurethane foam silk floss as matrix; Comprise heat treatment process under the processing of matrix conductionization, electrodeposit nickel plating and the hydrogen atmosphere, it is characterized in that: the process that before the processing of matrix conductionization, increases the continuous pass combing of polyurethane foam.
The continuous pass combing of polyurethane foam: the polyurethane foam silk floss at first carries out the pass combing, changes original pass structure;
Matrix conductionization processing: form the continuous matrix of conductionization polyurethane foam through the magnetic control vacuum sputtering through the polyurethane foam of pass combing is continuous;
Electrodeposit nickel plating: the polyurethane foam silk floss through after the conductionization processing at first carries out orientation stretching, carries out electroforming with the galvanic deposit mode then, forms the nickel foam midbody of ultralow area density;
Thermal treatment under the hydrogen atmosphere: the continuous skeleton of polyurethane foam is disposed through naked light incendiary method; Remove continuous resistates of still undecomposed polyurethane foam and the surperficial carbon distribution that possibly retain of middle article through further oxide treatment; Under atmosphere of hydrogen, reduce sintering then, obtain the nickel foam of ultralow area density, high opening rate.
As shown in Figure 1, the making method of the nickel foam of this ultralow area density, high opening rate mainly comprises the steps:
(ⅰ) the continuous pass combing of polyurethane foam: at first will steep silk floss and carry out the pass combing, and change the continuous pass structure of original bubble, and eliminate the difference between the continuous vertical, horizontal of bubble.The pass combing comprises oxidation dissolution 1, reductase 12, one-level cleaning 3, secondary cleaning 4, extruding drying 5, drying, reforming 6 and accessory circulation, driving control system.Pass carding equipment synoptic diagram is as shown in Figure 2;
The pass carding equipment comprises oxidation dissolution groove, reducing bath, one-level rinse bath, secondary rinse bath, extruding stem drying system and the drying shaping device that from left to right connects successively; Oxidation dissolution groove left side is provided with unwinding rack; The drying shaping device right side is provided with rolling-up mechanism; Oxidation dissolution groove and reducing bath below are respectively equipped with reservoir and recycle pump, and one-level rinse bath below is provided with the pre-treatment transmission system; Be separately installed with the multistage axis of guide in oxidation dissolution groove, reducing bath, one-level rinse bath and the secondary rinse bath; Between oxidation dissolution groove and the reducing bath, between reducing bath and the one-level rinse bath, between one-level rinse bath and the secondary rinse bath, be respectively equipped with extrusion roll between secondary rinse bath and the extruding stem drying system, extrusion roll is provided with adjustable forcing screw.
Oxidation dissolution groove and reducing bath are processed by PP or PVC material, and at one of which end feed liquor, the other end leaves riser, so that keep level stability; Oxidation dissolution groove and reducing bath below are placed with reservoir respectively and are equipped with recycle pump, are used for control of oxidation dissolution solution and reducing solution liquid level and solution and add.One-level rinse bath and secondary rinse bath are processed by PP or PVC material.Axis of guide material is acid-alkali-corrosive-resisting, antioxidant material; Axis of guide diameter is 100mm～200mm; Be inlaid with bearing respectively on the front and back inwall of oxidation dissolution groove, reducing bath, one-level rinse bath and secondary rinse bath, the two end supports of the axis of guide is rotated flexibly on bearing; Resistance is little, rotates with the polyurethane foam silk floss.
The pre-treatment transmission system is made up of the extrusion roll that plays extruding, gearing simultaneously, sprocket wheel, variable-frequency motor and driving chain etc.Be provided with extrusion roll between oxidation dissolution groove and the reducing bath, extrusion roll mainly plays extracts oxidation dissolution solution, prevents that too much oxidation dissolution solution from bringing reducing bath into, causes the effect that reducing solution lost efficacy and quickens.Between reducing bath and the one-level rinse bath, between one-level rinse bath and the secondary rinse bath, be respectively equipped with extrusion roll between secondary rinse bath and the extruding stem drying system, extrusion roll all plays similar effect.
The extruding stem drying system is made up of 3～8 grade stainless steel pair rollers; Be preferably 4～6 grades, the stainless steel pair roller comprises left and right two rollers, and roller diameter is 100～200mm; Adjust the gap between two rollers; The polyurethane foam silk floss passes through step by step, and wherein the branch that absorbs water press dry gradually, reaches back drying, reforming requirement.
Drying shaping device is temperature automatically controlled far infrared baking oven, and its type of drive is the guipure transmission, and the polyurethane foam silk floss is positioned over and passes through the far infrared baking oven on the guipure, reaches the purpose of drying, reforming.
The far infrared oven temperature is 40～90 ℃, is preferably 60～80 ℃; The speed of pre-treatment transmission system is 10～150m/h, is preferably 50～120m/h.
Use the continuous pass carding process of polyurethane foam of this pass carding equipment, adopt following steps:
(a) open the recycle pump and the recycle pump of reducing bath of oxidation dissolution groove, make oxidation dissolution solution and the interior reducing solution of reducing bath in the oxidation dissolution groove reach the processing liquid level of processing requirement after, flow out via riser; Open the far infrared baking oven, begin heating; When the far infrared baking oven reaches 40～90 ℃; Open the pre-treatment transmission system; The polyurethane foam that is placed on the unwinding rack is continuous, and first axis of guide below lays out in the oxidation dissolution groove, and second axis of guide top of warp is around below the 3rd axis of guide again; By that analogy, be serpentine and walk around the axis of guide in the oxidation dissolution groove;
(b) the polyurethane foam silk floss comes out to extrusion roll from the oxidation dissolution groove; Get into reducing bath through extrusion roll; Adjust adjustable forcing screw, extrusion roll can be extracted the polyurethane foam silk floss, polyurethane foam continuous during through reducing bath around the axle mode with the serpentine of oxidation dissolution groove around the axle mode;
(c) the polyurethane foam silk floss comes out through reducing bath, gets into one-level rinse bath, secondary rinse bath successively, cleans around the axle mode with identical serpentine, gets into the extruding stem drying system subsequently;
(d) the polyurethane foam silk floss passes through in the middle of the multistage stainless steel pair roller, and the moisture in the polyurethane foam silk floss is pushed out, and after multistage extruding, the micro-moisture that contains in the polyurethane foam silk floss is dried setting through the far infrared baking oven again;
(e) the polyurethane foam silk floss through extruding arrives the far infrared baking oven again, and drying, reforming is accomplished a whole set of pass carding process after the guipure transmission arrives the rolling-up mechanism rolling.
Oxidation dissolution solution is that potassium permanganate solution, potassium bichromate solution, sulphuric acid soln, salpeter solution or other have one or more the mixing solutions in the material of oxidisability; The mixing solutions of preferred potassium permanganate solution and sulphuric acid soln; Wherein the concentration of potassium permanganate solution can be 2～100g/L; Be preferably 2～20g/L, more preferably 3～15g/L; The concentration of sulphuric acid soln can be 2～80ml/L, is preferably 3～25ml/L, more preferably 4～18ml/L.
Reducing solution comprises sulphuric acid soln, comprises that also sodium oxalate solution, hydrogen peroxide solution or other have one or more the mixing solutions in the material of reductibility.
The concentration of sulphuric acid soln can be 1～90ml/L, is preferably 8～30ml/L; The concentration of sodium oxalate solution can be 1～80g/L, is preferably 3～20g/L; The concentration of hydrogen peroxide solution can be 5～100ml/L, is preferably 10～40ml/L.
(ⅱ) matrix conductionization processing: the bubble silk floss of pass combing purges the moisture of carrying secretly in the polyurethane foam silk floss, other liquid, gas and impurity through the method for forvacuum; Utilize the method conduction processing of magnetic control vacuum sputtering at last, make the continuous matrix of conductionization polyurethane foam.Matrix conductionization treatment process process is as shown in Figure 3;
(ⅲ) electrodeposit nickel plating: polyurethane foam silk floss first certainty ratio through 5%～10% after the conductionization processing stretches, and carries out electroforming with the galvanic deposit mode then, forms the nickel foam of different facial density, and the galvanic deposit mode is the zonal mode of working continuously of serialization.The electrodeposition technology flow process is as shown in Figure 4;
1. power supply: adopt the HF switch electroplating power supply;
2. area density controller: with the homogeneity of area density controller controlled on-line area density;
3. electroplate liquid: electronickelling mainly contains compositions such as single nickel salt, nickelous chloride, boric acid, increases auxiliary material to strengthen the smooth finish of product, improves hardness;
4. galvanic deposit: in electrodeposition process, adopt electrodeposition apparatus, make ultralow area density nickel foam be able to continuous automatic production, accomplish the work in-process of ultralow area density nickel foam again through clean, air-dry etc.
Galvanic deposit tank liquor of the present invention mainly adopts sulfamate type or sulfate-type, and its processing parameter is following:
(A) proportioning of sulfamate type plating bath and parameter:
Nickel sulfamic acid [Ni (NH
2SO
3)
24H
2O] 350～550g/L
Nickelous chloride (NiCl
26H
2O) 7～15g/L
Sodium Fluoride (NaF) 2～5g/L
Boric acid (H
3BO
3) 30～50g/L
PH value 3.0～3.5
40～50 ℃ of temperature
(B) proportioning of sulfate-type plating bath and parameter:
Single nickel salt (NiSO
47H
2O) 200～300g/L
Nickelous chloride (NiCl
26H
2O) 25～50g/L
Boric acid (H
3BO
3) 35～45g/L
PH value 4.0～4.5
40～55 ℃ of temperature.
(ⅳ) thermal treatment under the hydrogen atmosphere: will still remain in the continuous skeleton of the inner polyurethane foam of nickel foam and burn its removing through naked light; Remove continuous resistates of the bubble that does not fully decompose as yet and the surperficial carbon distribution that possibly retain of middle article through high temperature oxidation process then; Under atmosphere of hydrogen, reduce sintering at last; Improve its crystalline structure, obtain the nickel foam of ultralow area density, high opening rate.Heat treatment process is as shown in Figure 5 under the hydrogen atmosphere.
Can better understand the present invention through following embodiment:
Embodiment 1:
Get continuous polyurethane foam continuous (thickness 1.6mm, width 1000mm) two each 50m of volume; One volume identification is I, and another volume is designated II through the pass combing; I, II are carried out the processing of vacuum sputtering conductionization with same process; Magnetic control vacuum sputtering processing parameter: control sputter energy 6～13kw, the continuous sputter of speed 0.3～8 m/min, the sputter vacuum tightness (0.3～3.0) * 10 of guaranteeing the minimum
-2Pa, vacuum tightness when charging into the argon gas sputter (1～4) * 10
-1Pa puts into regular foam nickel with electrolyzer with I, II then, and galvanic deposit under the same process condition deposits 280 g/m
2Stop galvanic deposit, I, II are heat-treated under the same conditions again, its processing parameter is: 600～650 ℃ of oxidizing temperatures, and residence time 15min, 800～1000 ℃ of reduction temperatures, residence time 40min decomposes airshed 25 m
3/ h.I is a regular foam nickel, and II is the nickel foam of the ultralow area density of the present invention, high opening rate.
Get nickel foam II and the regular foam nickel I that the invention described above obtains and do the physicochemical property test, the result is as shown in table 1.
Table 1
| Performance | I | Ⅱ |
| Thickness (mm) | 1.6 | 1.6 |
| PPI | 95 | 120 |
| Area density (g/m 2） | 280 | 280 |
| Longitudinal tensile strength (N/cm 2） | 80 | 100 |
| Transverse tensile strength (N/cm 2） | 60 | 100 |
| Snappiness (inferior) | 6 | 7 |
| Nickel (%) | 99.6 | 99.6 |
| Iron (ppm) | 75 | 75 |
| Copper (ppm) | 8 | 8 |
| Manganese (ppm) | 42 | 42 |
| Sulphur (ppm) | 28 | 28 |
| Carbon (ppm) | 85 | 85 |
Snappiness test in the table 1 is to use stainless steel bar coiling nickel foam one circle of diameter as 25mm, does not ftracture to once, opens and reels, and repeats above-mentioned action, the number of times of till cracking, being reeled, down together.
Can find out from table 1; Adopt made of the present invention nickel foam; When its area density was identical with regular foam nickel, nickel foam, especially transverse tensile strength that its mechanical property (tensile strength, flexibility) obviously is superior to the prior art making were far longer than regular foam nickel.
Embodiment 2:
It is said to press embodiment 1, and the galvanic deposit area density that only changes the II volume is 150g/m
2, other processing condition are constant.Get nickel foam II and the regular foam nickel I that the invention described above obtains and do the physicochemical property test, the result is as shown in table 2.
Table 2
| Performance | I | Ⅱ |
| Thickness (mm) | 1.6 | 1.6 |
| PPI | 95 | 120 |
| Area density (g/m 2） | 280 | 150 |
| Longitudinal tensile strength (N/cm 2） | 80 | 85 |
| Transverse tensile strength (N/cm 2） | 60 | 85 |
| Snappiness (inferior) | 6 | 7 |
| Nickel (%) | 99.6 | 99.6 |
| Iron (ppm) | 75 | 75 |
| Copper (ppm) | 8 | 8 |
| Manganese (ppm) | 42 | 42 |
| Sulphur (ppm) | 28 | 28 |
| Carbon (ppm) | 85 | 85 |
Can find out from table 2, adopt the nickel foam of made of the present invention, during well below regular foam nickel, its physical strength still is superior to regular foam nickel in its area density.
Embodiment 3:
It is said to press embodiment 1, and changing the continuous thickness of II volume polyurethane foam is 1mm, and the galvanic deposit area density is 150g/m
2, other processing condition are constant.Get nickel foam II and the regular foam nickel I that the invention described above obtains and do the physicochemical property test, the result is as shown in table 3.
Table 3
| Performance | I | Ⅱ |
| Thickness (mm) | 1.6 | 1.0 |
| PPI | 95 | 140 |
| Area density (g/m 2） | 280 | 150 |
| Longitudinal tensile strength (N/cm 2） | 80 | 90 |
| Transverse tensile strength (N/cm 2） | 60 | 90 |
| Snappiness (inferior) | 6 | 8 |
| Nickel (%) | 99.6 | 99.6 |
| Iron (ppm) | 75 | 75 |
| Copper (ppm) | 8 | 8 |
| Manganese (ppm) | 42 | 42 |
| Sulphur (ppm) | 28 | 28 |
| Carbon (ppm) | 85 | 85 |
Can find out from table 3, adopt the nickel foam of made of the present invention, when its area density and thickness all were lower than regular foam nickel, its physical strength also will be got well than regular foam nickel.
The foregoing description and performance test comparison shows that, the nickel foam that the present invention makes, and its mechanical property is higher than regular foam nickel far away, and especially transverse tensile strength significantly improves, and has eliminated horizontal, the difference longitudinally of nickel foam, has reduced cost.
Claims (6)
1. the nickel foam of a ultralow area density, high opening rate, it is characterized in that: said nickel foam area density is 150～200g/m
2, thickness is 1.0～1.6 mm.
2. the making method of the nickel foam of the described ultralow area density of claim 1, high opening rate; With the polyurethane foam silk floss as matrix; Comprise heat treatment process under the processing of matrix conductionization, electrodeposit nickel plating and the hydrogen atmosphere, it is characterized in that: the process that before the processing of matrix conductionization, increases the continuous pass combing of polyurethane foam.
3. the making method of the nickel foam of ultralow area density according to claim 2, high opening rate is characterized in that: comprise the steps:
(ⅰ) the continuous pass combing of polyurethane foam: the polyurethane foam silk floss is carried out the pass combing, change the continuous pass structure of original bubble, eliminate the difference between the continuous vertical, horizontal of bubble;
(ⅱ) matrix conductionization processing: the polyurethane foam silk floss of pass combing purges the moisture of carrying secretly in the polyurethane foam silk floss, liquid, gas and impurity through the method for forvacuum; Utilize the method conduction processing of magnetic control vacuum sputtering at last, make the continuous matrix of conductionization polyurethane foam;
(ⅲ) electrodeposit nickel plating: polyurethane foam silk floss first certainty ratio through 5%～10% after the conductionization processing stretches, and carries out electroforming with the galvanic deposit mode then, forms the nickel foam of different facial density;
(ⅳ) thermal treatment under the hydrogen atmosphere: will still remain in the continuous skeleton of the inner polyurethane foam of nickel foam and burn its removing through naked light; Remove continuous resistates of the bubble that does not fully decompose as yet and the surperficial carbon distribution that retains of middle article through high temperature oxidation process then; Under atmosphere of hydrogen, reduce sintering at last; Improve its crystalline structure, obtain the nickel foam of ultralow area density, high opening rate.
4. the making method of the nickel foam of ultralow area density according to claim 3, high opening rate is characterized in that: the continuous pass combing of polyurethane foam comprises that oxidation dissolution (1), reduction (2), one-level are cleaned (3), secondary cleans (4), extruding dry (5), drying, reforming (6) and accessory circulation, driving control system in the step (ⅰ).
5. the making method of the nickel foam of ultralow area density according to claim 3, high opening rate is characterized in that: the galvanic deposit mode is the zonal mode of working continuously of serialization in the step (ⅲ).
6. the making method of the nickel foam of ultralow area density according to claim 3, high opening rate is characterized in that: the galvanic deposit tank liquor is sulfamate type or sulfate-type in the step (ⅲ), and its processing parameter is following:
(A) proportioning of sulfamate type plating bath and parameter:
Nickel sulfamic acid [Ni (NH
2SO
3)
24H
2O] 350～550g/L
Nickelous chloride (NiCl
26H
2O) 7～15g/L
Sodium Fluoride (NaF) 2～5g/L
Boric acid (H
3BO
3) 30～50g/L
PH value 3.0～3.5
40～50 ℃ of temperature
(B) proportioning of sulfate-type plating bath and parameter:
Single nickel salt (NiSO
47H
2O) 200～300g/L
Nickelous chloride (NiCl
26H
2O) 25～50g/L
Boric acid (H
3BO
3) 35～45g/L
PH value 4.0～4.5
40～55 ℃ of temperature.
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| CN103741173A (en) * | 2013-12-30 | 2014-04-23 | 菏泽天宇科技开发有限责任公司 | High-consistency foam nickel preparation equipment and preparation method |
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| CN104210090A (en) * | 2014-09-09 | 2014-12-17 | 常德力元新材料有限责任公司 | Processing process of polyester sponge used for preparing power battery foam nickel materials |
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