CN1202015A - Negative electrode for nickel-hydrogen cell and method of preparing the same - Google Patents

Negative electrode for nickel-hydrogen cell and method of preparing the same Download PDF

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Publication number
CN1202015A
CN1202015A CN98107763A CN98107763A CN1202015A CN 1202015 A CN1202015 A CN 1202015A CN 98107763 A CN98107763 A CN 98107763A CN 98107763 A CN98107763 A CN 98107763A CN 1202015 A CN1202015 A CN 1202015A
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China
Prior art keywords
negative pole
hydrogen storage
storage metal
alloy
butadiene rubber
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CN98107763A
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Chinese (zh)
Inventor
催水石
孙荣培
黄佑铉
姜秉炫
张允汉
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Samsung SDI Co Ltd
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Samsung Electron Devices Co Ltd
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Publication of CN1202015A publication Critical patent/CN1202015A/en
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    • 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
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/242—Hydrogen storage electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/34—Gastight accumulators
    • H01M10/345—Gastight metal hydride accumulators
    • 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
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/26—Processes of manufacture
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/621—Binders
    • H01M4/622—Binders being polymers
    • 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
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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

Abstract

A minus pole which is used for nickel-hydrogen batteries comprises a current collector, active substance compound which is coated on the current collector and hydrophobic agent which is additionally coated on the active substance compound. The active substance compound comprises hydrogen storage metal alloy, shock absorption agent which contains nickel powder or carbon black, agent which is used to increase the viscosity and adhesive agent which is selected from acrylonitrile-bivinyl rubber, butadiene styrene rubber, butadiene rubber, acrylate-butadiene rubber, chlorobutadiene, acrylic latex and compound. The hydrophobic agent contains fluoro-resin.

Description

Be used for a kind of negative pole of nickel-hydrogen cell and preparation method thereof
The application is based upon on the basis of applying for 97-23440, and application 97-23440 files an application to korean industrial property office on June 5th, 1997, and its content is incorporated herein as a reference.
The present invention relates to a kind of negative pole that is used for nickel-hydrogen cell and preparation method thereof, more particularly, relate to a kind of negative pole of the nickel-hydrogen cell that is used to have high battery capacity.
At present the trend of development is to make portable electronics microminiaturization and lighting, for example in conjunction with video camera, audion system, collapsible personal computer and the cellular phone of VTR (video tape recorder).Therefore, need a kind ofly have the battery of improved performance characteristics as its energy.
In this class battery, the Ni-Cd battery has obtained extensive use in each field.Yet cadmium is harmful to environment.For fear of this defective, at present, using of the research of a kind of hydrogen storage metal alloy as the nickel-hydrogen cell of cathode active material.The hydrogen storage metal alloy is meant hydrogen is stored in MmNi 5In the type alloy and a kind of alloy (Mm is meant the Misch metal, promptly a kind of lucium) of preparing.The hydrogen storage metal alloy can under low pressure bear reversible hydrogen absorption and emit reaction.Can utilize prepared in various methods to use the nickel-hydrogen dattery of making negative pole of hydrogen storage metal alloy, comprise:
1) has the transduction agent of conductivity to prepare a kind of method of battery lead plate by sintering hydrogen storage metal alloy powder with a kind of;
2) the hydrogen storage metal alloy is injected or be loaded into a porous, electrically conductive plate, this conductive plate has three-dimensional structure, a kind of method of for example a kind of foam (foamed) nickel; And
3) use a kind of polymer adhesive with the hydrogen storage metal alloys adhesion in an a kind of method with preparation battery lead plate on the porous, electrically conductive plate of two-dimensional structure.
In said method, first method has a problem, and promptly in sintering step, therefore hydrogen storage metal alloy surperficial oxidized be difficult to absorb and emit hydrogen.Therefore the conductivity of electrode reduces, and the discharge voltage of battery descends, and the result has reduced battery capacity.Second method all has Ideal Characteristics in every respect.But in the method, because the large volume of battery lead plate has limited the quantity of negative electrode active material, so battery should be designed to have the baby battery capacity.In addition, the porous plate with three-dimensional structure costs an arm and a leg, and therefore needs higher producing cost.The third method has such advantage, promptly by effectively utilizing polar board surface, has improved the energy density of electrode.But it has a shortcoming, is difficult to that promptly negative electrode active material is adhered to one and has on the collector body thin plate of two-dimensional structure.
In these methods,, but still be considered to desirable negative pole preparation method though the third method has the above-mentioned problem of mentioning.By using a kind of adhesive to overcome the problems referred to above.As for adhesive, use be a kind of nonconducting polymer adhesive, polytetrafluoroethylene for example, polyvinyl alcohol and methylcellulose or the like.But the bonding strength of adhesive is so high not as expection.Therefore, must negative electrode active material be adhered on the collector body this nonconducting polymer adhesive of luxus consumption, therefore reduce the conductivity of battery, discharge voltage is descended.And the thickness that so excessively uses polymer adhesive to increase adhesive film makes the hydrogen storage metal alloy to the absorption of hydrogen with emit the difficulty that becomes.Therefore, when reducing reaction rate, hydrogen balance pressure raises, and the result is that inner pressure of battery raises the degeneration of quick charge and flash-over characteristic.
And under oxidation and hydrogen environment, when the charge and discharge cycle of nickel-hydrogen cell repeated, above-mentioned gas had promoted the oxidation of negative pole, and the result has reduced useful life, has reduced capacity.For this reason, in order to remove above-mentioned gas, negative pole is designed to have the capacity than positive maximum.By this way, the unnecessary capacity (being known as the charge and discharge reserves) of negative pole participates in absorbing and removing the gas that is generated, but does not participate in the charge and discharge process.
Simultaneously, hydrogen storage metal alloy and conductive agent are as the equal possess hydrophilic property of the main component of negative pole.The result is that water still is present in the composition of cathode active materials surface in the cell reaction process.Remaining water has disturbed the combination of hydrogen and oxygen in the negative pole, makes water form reaction rate and obviously reduces.Therefore, the amount of hydrogen and oxygen increases in the battery, voltage rise height in making.For impelling the decomposition reaction of oxygen in the negative pole, negative pole is handled making it have hydrophobicity, therefore increased the interface of negative pole, the absorption and the decomposition of gas appear on this interface.In this case, form three-phase (gas-liquid-solid) interface on the negative terminal surface, make negative pole be easier to adsorbed gas,, therefore reduced interior pressure its decomposition.
Usually, using polytetrafluoroethylene to handle negative pole as water-repelling agent makes it have hydrophobic property.But polytetrafluoroethylene is only given the surface portion hydrophobic property of negative pole.Therefore do not reach gratifying desirable hydrophobic property.
An object of the present invention is to provide a kind of negative pole that is used for nickel-hydrogen cell, this electrode is at composition of cathode active materials and have and show to have good bonding strength between the porous plate of two-dimensional structure.
Another object of the present invention provides a kind of negative pole that is used for nickel-hydrogen cell, can effectively prevent the cell degradation that the oxidation by the particulate phenomenon of negative electrode active material and surface thereof causes.
A further object of the invention just provides the method that a kind of preparation is used for the negative pole of nickel-hydrogen cell, and this method can be removed hydrogen and the oxygen that produces in the charge and discharge process effectively, and can reduce inner pressure of battery effectively.
For achieving the above object, the negative pole that is used for nickel-hydrogen cell includes a collector body, a kind ofly is coated on the active compound composition on the collector body and is coated on a kind of water-repelling agent on the active compound composition, and this water-repelling agent utilizes fluoro resin to make.Above-mentioned active compound composition comprises a kind of hydrogen storage metal alloy and a kind of shock absorber fluid.This shock absorber fluid is made up of nickel powder or carbon black.And this active compound composition comprises a kind of reagent and a kind of adhesive that is used to improve viscosity, and this adhesive can be selected from third rare nitrile-butadiene rubber; butadiene-styrene rubber; butadiene rubber, acrylic acid-butadiene rubber, chlorobutadiene, acrylic emulsion, or a kind of their mixture.
The negative pole preparation method comprises the following steps: a kind of composition of cathode active materials is coated on-collector body on; The collector body that this is coated immerses in the water-repelling agent, and this water-repelling agent is coated on the collector body that has been coated with.
According to the present invention, the negative pole that is used for nickel-hydrogen cell comprises, collector body, a kind of active compound composition and a kind of water-repelling agent.This active compound composition comprises a hydrogen storage metal alloy as active material, a kind of adhesive, a kind of reagent and a kind of reagent that is used to improve viscosity that is used for damping.Collector body is a porous, electrically conductive plate with two-dimensional structure preferably.When using this type of plate, make the energy density of electrode increase owing to effectively utilized polar board surface as collector body.
In this nickel-hydrogen cell, negative pole should be designed to have high-energy-density to obtain high battery performance feature.Therefore, the preferred porous, electrically conductive plate that uses with two-dimensional structure, as negative electrode collector, it has satisfied ideal conditions.In addition and since form in the negative pole discharge and recharge to stock and reduced hydrogen and oxygen internal pressure, this hydrogen is not absorbed by negative pole in charging, and this oxygen produces at positive pole in overcharging, so negative pole is designed to than just having bigger capacity.The part that is meant that capacity of negative plates is Duoed than positive electrode capacity is stocked in charge and discharge.This overcapacity partly do not form by one by live part and a precharge section.Live part is not called as charging deposit (charge reserve), and precharge section is known as discharge reserve (discharge reserve).
Yet as previously mentioned, when the two-dimensional structure plate was used as negative electrode collector, the bonding strength between active material and the negative electrode collector was very weak, therefore used a kind of adhesive to improve bonding strength.
For this purpose, adhesive preferably has following physical characteristic.At first, adhesive reply alkaline electrolyte solution reaches has stability at certain temperature range, and is easy to carry out chemistry and physical treatment.The second, because a large amount of adhesive that uses causes that inner pressure of battery raises and quick charge and discharge performance degradation, so even this adhesive should also can provide enough bonding strengths when using on a small quantity.The 3rd, it should provide enough pliabilities and elasticity, bears the physical impacts to a certain degree that imposes on the electrode, because when the electrode that will prepare inserted in the sealed cell, this electrode should be curved cylindric.At last, it can spread in the aqueous solution, because the kind electrode composition is coated on the collector body with pasty state.
Among the present invention, this adhesive as for having above-mentioned physical characteristic has used a kind of compound, is selected from: acrylonitrile-butadiene rubber, butadiene-styrene rubber, butadiene rubber, chlorobutadiene, acrylic emulsion or the like or its mixture.More preferably use a kind of compound, be selected from butadiene rubber, acrylate-butadiene rubber, chlorobutadiene, acrylic emulsion or a kind of their mixture.
The amount of the preferred adhesive that adds is the 0.2%-3.0% of hydrogen storage metal weight alloy.When consumption surpassed 3.0%, the conductivity of pole plate reduced, and discharge voltage descends.Above-mentioned situation is that the hydrogen storage metal alloy is difficult to absorb and emit hydrogen because the thickness of adhesive film becomes big.So hydrogen balance voltage rise height, and reaction rate reduces, the result is that inner pressure of battery becomes greatly.And, destroyed quick charge and discharge characteristic.On the contrary, when consumption less than 0.2% the time, the bonding strength of contact portion has just reduced between alloy and the collector body.
The hydrogen storage metal alloy is meant a kind of alloy, by hydrogen is stored in MmNi 5Prepare in the type alloy (Mm is meant the Misch metal, promptly a kind of lucium).At MmNi 5In the type alloy, generally use a kind of AB 5Type alloy (part Ni is by Co, and Mn and Al replace), the example is MmNi 3.55Al 0.3Mn 0.4Co 0.75Preferably on this hydrogen storage metal alloy, apply a kind of oxidation-resistant alloy.This oxidation-resistant alloy has prevented the oxidation at high temperature of hydrogen storage metal alloy.Oxidation-resistant alloy can be from CeO 2, Y 2O 3, Ca (OH) 2Or Yb 2O 3In select.The preferred amount of using is the 1-5% of hydrogen storage metal weight alloy.When consumption is higher than 5%, waste material, on the contrary, when consumption was lower than 1%, antioxidant can not play effect effectively.When applying oxidation-resistant alloy on the hydrogen storage metal alloy, the durability of hydrogen storage metal improves, and has prevented the cell degradation that the oxidation of particulate phenomenon in repeatedly battery-operated and hydrogen storage metal alloy surface causes.
Shock absorber fluid has relaxed the physics and the electrochemistry collision that impose on the hydrogen storage metal alloy as a kind of buffer.When using this collision moderator, avoided the particulate phenomenon that occurs on the hydrogen storage metal alloy with and with the separating of collector body.The particulate phenomenon is by the absorption of hydrogen and emits that the pucker ﹠ bloat of operation hydrogen storage metal alloy when repeatedly repeating causes with separating.As for the crusherbull zone agent, can use nickel powder, graphite powder, carbon black is ketjen black for example.Preferred nickel powder and the carbon black of using, these two kinds of material densities are low, can be used to prevent enlarging markedly of active compound composition viscosity.Among the present invention, nickel powder has the 1.3g/cm of being lower than 3Emit (tapping) density.When using nickel powder to do shock absorber fluid, the addition of preferred nickel powder is the heavy 3-5% of hydrogen storage metal alloy.And when using carbon black to make shock absorber fluid, preferred carbon black addition is the heavy 0.05-0.4% of hydrogen storage metal alloy.When consumption was lower than above-mentioned scope, shock absorber fluid did not have effect.On the contrary, when consumption is higher than above-mentioned scope, wasted material.
Viscosity intensifier can be from methylcellulose, selects in carboxymethyl cellulose or the hydroxypropyl methylcellulose.
Water-repelling agent is a kind of hydrophobic material that has.When water-repelling agent was coated on the negative pole, negative terminal surface had formed three-phase (gas-liquid-solid) interface, and gas is easy to be adsorbed on the negative pole so that negative pole absorbs and decomposition gas, and the result has reduced inner pressure of battery.
Fluoro resin with low surface tension can be used as water-repelling agent.Preferred water-repelling agent comprises that surface energy is fluoro resin, the amorphous fluoro resin of 10-20dyne/cm or is scattered in fluoro resin in the perfluocarbon solvent, and wherein perfluocarbon is selected from C 3F 8, C 4F 10, C 5F 12, C 5F 11NO, C 6F 14, C 7F 16, C 8F 18, CCl 2F 2, C 2F 3Cl 3, C 2Cl 3F 3Or C 2ClF 5More preferably a kind of fluoro resin, its preparation method are known FC722 amorphous fluoro resin (3M, Ltd., sell at Co preparation) to be dispersed in the perfluocarbon solvent of low surface tension (C for example 6F 14) as water-repelling agent.When collector body being dipped in fluoro resin with the coating water-repelling agent, formed layer of even fluoro resin film on the collector body, make inner pressure of battery significantly descend, and the side reaction that the dielectric water-repelling agent layer that forms owing to negative terminal surface causes has also reduced.
The preparation method who is used for the negative pole of nickel-hydrogen cell of the present invention will describe at this.
Adhesive is added in the hydrogen storage metal alloy, after this adds viscosity intensifier and shock absorber fluid and be used to prepare the composition of cathode active materials that is used for nickel-hydrogen cell in the hydrogen storage metal alloy.This composition is applied on the collector body, and the collector body after applying is immersed in the water-repelling agent, prepares the negative pole that is used for nickel-hydrogen cell thus.
Preferred use a kind of slurry (paste of mixture) that flowability that low viscosity becomes reconciled is beneficial to coating that has.Under this situation, because the proportion of hydrogen storage metal alloy is very big in the slurry, the flowability of slurry can be very high.Therefore, in coating procedure, slurry is easy to flow.For preventing this slurry flow phenomenon, must improve the viscosity of slurry.For this reason, used reagent and the low amounts of water that is used to increase viscosity in a large number.But when the viscosity of starching was high especially, mixture was difficult for disperseing, and when therefore needing slurry is carried out careful processing.Under the sort of situation, generate a large amount of bubbles, need remove these bubbles in addition.For stoping this high viscosity, use materials of low density (as carbon black) as shock absorber fluid, do not add any additional material.
With reference to the following example in the scope of the invention, the present invention is further explained in detail.
[embodiment 1]
The one butadiene-styrene rubber suspended substance that contains 48% butadiene-styrene rubber is added 100gMmNi 3.55Al 0.3Mn 0.4Co 0.75In the hydrogen storage metal alloy, make the butadiene-styrene rubber amount that is used for mixing should be 1g.Next, in this mixture, add the ketjenblack of 0.2g sanlose and 0.6g, prepare a composition of cathode active materials that is used for nickel-hydrogen cell.This composition is coated on the collector body, and the collector body after will applying then immerses the FC722 as water-repelling agent (3MCo., Ltd the produces) (C of 0.2% (weight ratio) 6F 14Solvent is known as 3MCo., the PF5060 that Ltd produces), to prepare a kind of negative pole that is used for nickel-hydrogen cell.This negative pole, a positive pole, a dividing plate and a kind of electrolyte all insert and obtain a battery with 4/5A size and 1800mAh capacity in the container.The Capacity Ratio of battery cathode/positive pole is 1.6.
[embodiment 2]
Except that make the adhesive battery preparation method such as embodiment 1 with acrylic emulsion.
[embodiment 3]
CeO with 3% weight 2Join in the pure hydrogen storage metal alloy, its vibration was prepared the hydrogen storage metal alloy in 24 hours with ball mill.In addition, the method for making of battery is all identical with embodiment 1.
[embodiment 4]
Except that doing the water-repelling agent with polytetrafluoroethylene, the preparation method of battery is all identical with embodiment 1.
[comparative example 1]
Except that using the 2g polytetrafluoroethylene as the adhesive, the method for making of battery is all identical with embodiment 1.
[comparative example 2]
Remove and not add ketjen black, and improved outside other amount of substance (except the alloy) by compensation ketjen, the preparation method of battery is all the same with embodiment 1.The utilance of the battery of preparing according to the foregoing description and comparative example, cycle period, interior pressure are all definite, the results are shown in down in the tabulation 1.
[table 1]
Utilance [%] Cycle life Interior [the kgf/cm that presses 2]
Embodiment 1 ????105 ????552 ????5
Embodiment 2 ????105 ????531 ????6
Embodiment 3 ????108 ????632 ????5
Embodiment 4 ????105 ????411 ????16
The comparative example 1 ????80 ????252 ????14
The comparative example 2 ????110 ????352 ????7
(utilance: the half-cell capacity of the negative pole hydrogen storage metal alloy of per unit weight is determined, and the value that obtains is thus compared with 270mAh/g, with the form appearance of percentage.
Cycle life: in 1C charge and discharge reaction, battery capacity is reduced to 90% o'clock cycle-index of initial capacity)
As mentioned above, when on having the two-dimensional structure conductive plate, applying composition of cathode active materials, can prepare and have highdensity negative pole.Have fusible adhesive by use, the hydrogen storage metal alloy is adhered on the conductive plate well, has improved cycle life.And the amount of this adhesive should few as far as possible battery that has high discharge voltage with preparation.Form three phase boundary at polar board surface and made the interior drops of battery.Therefore sealed cell effectively.
Though with reference to preferred embodiment, the present invention is described in detail, those of ordinary skills will recognize the various changes that the present invention is made and replace scope of the present invention and the spirit of the present invention that does not all break away from as describing in detail in the claims.

Claims (19)

1. negative pole that is used for nickel-hydrogen cell comprises:
A collector body; A kind of active compound composition that is coated on the collector body; With a kind of water-repelling agent that is coated on the active compound composition,
Wherein active compound composition comprises a hydrogen storage metal alloy; A kind of shock absorber fluid, this reagent contains nickel powder or carbon black; A kind of in order to improve the reagent of viscosity; With a kind of adhesive, be selected from acrylonitrile-butadiene rubber, butadiene-styrene rubber, butadiene rubber, acrylate-butadiene rubber, chlorobutadiene, acrylic emulsion and composition thereof; And wherein contain fluoro resin in the water-repelling agent.
2. the negative pole of claim 1, wherein the amount of adhesive is the 0.2-3% of hydrogen storage metal weight alloy.
3. the negative pole of claim 1, wherein adhesive is selected from butadiene rubber, acrylate-butadiene rubber, chlorobutadiene, acrylic emulsion and composition thereof.
4. the negative pole of claim 1, nickel powder density wherein is 1.3g/cm 3Below, and its amount is the 3-5% of hydrogen storage metal weight alloy.
5. the negative pole of claim 1, wherein the amount of carbon black is the 0.05-0.4% of the weight of hydrogen storage metal alloy.
6. the negative pole of claim 1 wherein applies the hydrogen storage metal alloy with oxidation-resistant alloy, and this oxidation-resistant alloy is selected from CeO 2, Y 2O 3, Ca (OH) 2And Yb 2O 3, its amount is the 1-5% of hydrogen storage metal weight alloy.
7. the negative pole of claim 1, the reagent that wherein improves viscosity is selected from methylcellulose, carboxymethyl cellulose and hydroxypropyl methylcellulose.
8. the negative pole of claim 1, wherein the fluoro resin surface energy is 10-20dyne/cm.
9. the negative pole of claim 1, wherein fluoro resin is an amorphous form.
10. the negative pole of claim 1, wherein fluoro resin is scattered in the perfluocarbon solvent.
11. the negative pole of claim 10, wherein perfluorocarbon is selected from C 3F 8, C 4F 10, C 5F 12, C 5F 11NO, C 6F 14, C 7F 16, C 8F 18, CCl 3F, CCl 2F 2, C 2F 3Cl 3, C 2Cl 3F 3And C 2ClF 5
12. the negative pole of claim 1, wherein collector body is the porous, electrically conductive plate of a two-dimensional structure.
13. a method is used to prepare the negative pole of nickel-hydrogen cell, comprises the steps:
One composition of cathode active materials is coated on the collector body, composition of cathode active materials comprises a hydrogen storage metal alloy, a kind of damping reagent, this reagent has nickel powder or carbon black, a kind of reagent and a kind of adhesive that improves viscosity, be selected from acrylonitrile butadiene rubber; butadiene-styrene rubber, butadiene rubber, acrylate-butadiene rubber; chlorobutadiene, acrylic emulsion and a kind of its mixture; Contain in the water-repelling agent of fluorine-based resin with the collector body immersion one after applying.
14. the method for claim 13, fluorine-based reagent surface energy wherein is 10-20dyne/cm.
15. the method for claim 13, wherein fluoro resin is an amorphous form.
16. the method for claim 13, wherein fluoro resin is scattered in the perfluocarbon.
17. the method for claim 16, wherein perfluocarbon is selected from C 3F 8, C 4F 10, C 5F 12, C 5F 11NO, C 6F 14, C 7F 16, C 8F 18, CCl 3F, CCl 2F 2, C 2F 3Cl 3, C 2Cl 3F 3And C 2ClF 5In.
18. the method for claim 13, wherein collector body is a kind of porous, electrically conductive plate with two-dimensional structure.
19. the method for claim 13 wherein applies the hydrogen storage metal alloy with oxidation-resistant alloy, this oxidation-resistant alloy is selected from CeO 2, Y 2O 3, Ca (OH) 2And Yb 2O 3, its amount is for being the 1-5% of hydrogen storage metal weight alloy.
CN98107763A 1997-06-05 1998-04-29 Negative electrode for nickel-hydrogen cell and method of preparing the same Pending CN1202015A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR23440/97 1997-06-05
KR1019970023440A KR19990000506A (en) 1997-06-05 1997-06-05 Anode active material composition for nickel-hydrogen battery and manufacturing method of anode for nickel-hydrogen battery using same

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Publication Number Publication Date
CN1202015A true CN1202015A (en) 1998-12-16

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CN101563742B (en) * 2006-10-23 2011-10-12 阿克逊动力国际公司 Negative electrode for hybrid energy storage device
CN103794798A (en) * 2014-01-27 2014-05-14 中南大学 Battery cathode slurry and preparation method of battery cathode slurry
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US20200020926A1 (en) * 2017-03-24 2020-01-16 Nissan Motor Co., Ltd. Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the same
US11664489B2 (en) * 2017-03-24 2023-05-30 Nissan Motor Co., Ltd. Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the same

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