CN110289395B - Paste for cathode of zinc-nickel battery and preparation method thereof - Google Patents
Paste for cathode of zinc-nickel battery and preparation method thereof Download PDFInfo
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- CN110289395B CN110289395B CN201910586299.6A CN201910586299A CN110289395B CN 110289395 B CN110289395 B CN 110289395B CN 201910586299 A CN201910586299 A CN 201910586299A CN 110289395 B CN110289395 B CN 110289395B
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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
- H01M4/26—Processes of manufacture
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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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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Abstract
The invention discloses paste for a zinc-nickel battery cathode and a preparation method thereof, belongs to the technical field of zinc-nickel battery preparation processes, and solves the problems that the paste prepared by neutralization in the prior art is low in viscosity, is only suitable for preparing a pole piece by a paddle pulling method, and causes the prepared pole piece to be thin, low in living matter quantity, short in service life and poor in consistency. The preparation method comprises the following steps: mixing and stirring the negative electrode powder and the additive uniformly to obtain raw material powder; uniformly mixing and stirring the raw material powder and the polytetrafluoroethylene emulsion to obtain mixed powder, wherein the revolution speed is 20-50 rad/min, the rotation speed is 3000-5000 rad/min, and the revolution and rotation time is 10-20 min; mixing the mixed powder with a paste medium, and uniformly stirring to obtain a paste body; the paste comprises 77-85% of negative electrode powder, 5-10% of additive, 1-5% of polytetrafluoroethylene and 8-17% of paste mixing medium in percentage by mass. The invention can be used for paste of the cathode of the zinc-nickel battery and the preparation thereof.
Description
Technical Field
The invention relates to a zinc-nickel battery preparation process, in particular to paste for a zinc-nickel battery cathode and a preparation method thereof.
Background
The new energy automobile is an environment-friendly travel tool, the zinc-nickel power battery is one of the core components of the electric automobile, the consumption is large, the design requirement is reasonable, and the production process requirement is strict. In the production process of the zinc-nickel battery, the kneading paste is used as a key process of the battery process, and the quality of the kneading paste directly influences the performance of the battery, particularly the service life of the battery and the initial performance of the battery.
In the prior art, the traditional negative electrode and paste mainly adopt methods of water system and paste, organic medium and paste and the like, and the paste prepared by the method has small viscosity, is basically in a paste shape, has certain fluidity, cannot be transferred well, and has the defects of incomplete discharging of the paste in each batch and paste, thus influencing the consistency of the following batches and pastes.
In addition, the paste in the form of slurry is only suitable for preparing pole pieces by a paddle pulling method, and only thinner pole pieces can be prepared under the actual paddle pulling process, so that the consistency of the pole pieces is poor, and the thickness of the pole pieces cannot be ensured, thereby affecting the consistency and the service life of the battery. And the paddle pulling process is only suitable for the production of the winding battery, and the laminated battery has larger hidden trouble.
Disclosure of Invention
In view of the above analysis, the invention aims to provide a paste for a zinc-nickel battery negative electrode and a preparation method thereof, and solves the problems that the paste prepared by neutralization in the prior art has low viscosity, is only suitable for preparing a pole piece by a paddle pulling method, and causes the prepared pole piece to be thin, low in living matter amount, short in service life and poor in consistency.
The purpose of the invention is mainly realized by the following technical scheme:
the invention provides a preparation method of paste for preparing a cathode of a zinc-nickel battery, which comprises the following steps:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain raw material powder;
step 2: uniformly mixing and stirring the raw material powder and the polytetrafluoroethylene emulsion to obtain mixed powder, wherein the revolution speed is 20-50 rad/min, the rotation speed is 3000-5000 rad/min, and the revolution and rotation time is 10-20 min;
and step 3: mixing and stirring the mixed powder and the paste medium uniformly to obtain paste for preparing the cathode of the zinc-nickel battery; the paste comprises the following components in percentage by mass: 77-85% of negative electrode powder, 5-10% of additive, 1-5% of polytetrafluoroethylene and 8-17% of paste mixing medium.
In one possible design, in the step 1, the revolution speed of stirring is 10-20 rad/min; the rotation speed is 1000-2000 rad/min, and the revolution and rotation time is 5-15 min.
In one possible design, in step 2, a polytetrafluoroethylene emulsion is added to the mixed raw materials.
In one possible design, in step 3, the cream mix media is added to the mixed powder.
In one possible design, the cream mixing medium is alcohol, acetone, water, a mixed liquid of alcohol and water, or a mixed liquid of alcohol and acetone.
In one possible design, the paste mixing medium is alcohol, acetone or a mixed liquid of alcohol and acetone, and the volume ratio of the alcohol to the acetone is 9-11: 11-9, in the step 3, the revolution speed of stirring is 40-50 rad/min, the rotation speed is 4000-5000 rad/min, the rotation time is 5-10 min, and the revolution time is 10-20 min.
In one possible design, the paste mixing medium is water or mixed liquid of alcohol and water, and the volume ratio of the alcohol to the water is 9-11: 11-9, in the step 3, the stirring revolution speed is 40-50 rad/min, the rotation speed is 1000-2000 rad/min, the rotation time is 5-10 min, and the revolution time is 10-20 min.
The application also provides a paste for preparing the cathode of the zinc-nickel battery, which is prepared by adopting the preparation method, and the paste comprises 77-85% of cathode powder, 5-10% of additive, 1-5% of polytetrafluoroethylene and 8-17% of paste mixing medium in percentage by mass.
In one possible design, the paste is in a dough shape, and the penetration degree is 35-45.
In one possible design, the additive comprises calcium hydroxide, a conductive agent and sodium carboxymethyl cellulose, and the mass ratio of the calcium hydroxide to the conductive agent to the sodium carboxymethyl cellulose is (100-150): (50-100): (1-5).
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
a) the invention provides a method for preparing paste for preparing a zinc-nickel battery cathode, which is characterized in that the proportion and the mixing process of paste raw materials (cathode powder, additive, polytetrafluoroethylene emulsion and paste medium) are set, PTFE emulsion (polytetrafluoroethylene) is used for fiberizing in advance, the cathode material is uniformly dispersed, the apparent density of the paste is improved, the production of the later section is convenient, then, the revolution speed and the rotation speed of stirring are increased, the fiberization degree of the paste is increased, the prepared paste is in a dough shape similar to a dough shape and suitable for transportation and transfer, the fiberization degree and the apparent density of the paste are improved, the using amount of a binder can be reduced, the using amount of PTFE is reduced, the specific energy of the battery is increased, the using amount of the paste mixing medium is reduced, the recovery pressure of the paste mixing medium in the production process is reduced, and the cost is reduced, the prepared paste is energy-saving and environment-friendly, and meanwhile, the prepared paste is high in cohesiveness, the adhesive in the material can play a binding role to the maximum extent, and the connecting force of the paste and the connecting force of the paste and the current collector are greatly improved, so that the cycle life of the battery is prolonged.
b) The preparation method of the paste for preparing the cathode of the zinc-nickel battery provided by the invention uses the existing mature equipment, has simple process and strong operability, does not volatilize dust in the production process, is green and environment-friendly, and is energy-saving and economical.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.
Detailed Description
The preferred embodiments of the present invention are described in detail below.
The application provides a preparation method of paste for preparing a cathode of a zinc-nickel battery, which comprises the following steps:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain raw material powder;
step 2: uniformly mixing and stirring raw material powder and polytetrafluoroethylene emulsion (PTFE emulsion) to obtain mixed powder, wherein the revolution speed is 20-50 rad/min, the rotation speed is 3000-5000 rad/min, and the revolution and rotation time is 10-20 min, wherein polytetrafluoroethylene emulsion polymerization is also called dispersion polymerization, and the obtained tetrafluoroethylene emulsion is PTFE aqueous dispersion with the solid content of about 60%, for example, 55-65%;
and step 3: mixing and stirring the mixed powder and the paste medium uniformly to obtain paste for preparing the cathode of the zinc-nickel battery; the paste comprises 77-85% of negative electrode powder, 5-10% of additive, 1-5% of polytetrafluoroethylene and 8-17% of paste mixing medium in percentage by mass.
Compared with the prior art, the preparation method of the paste for preparing the cathode of the zinc-nickel battery, which is provided by the application, is characterized in that the proportion and the mixing process of paste raw materials (cathode powder, additive, polytetrafluoroethylene emulsion and paste medium) are set, the PTFE emulsion (polytetrafluoroethylene) is used for fiberizing in advance, the cathode material is uniformly dispersed, the apparent density of the paste is improved, the production of the later section is facilitated, then, the fiberization degree of the paste is increased by increasing the revolution speed and the rotation speed of stirring, the prepared paste is in a dough shape similar to a dough shape and suitable for transportation and transfer, the fiberization degree and the apparent density of the paste are improved, the using amount of a binder can be reduced, the using amount of PTFE is reduced, the specific energy of the battery is increased, the using amount of the paste medium is reduced, and the recovery pressure of the paste medium in the production process is reduced, the cost is reduced, the energy is saved, the environment is protected, meanwhile, the prepared paste is strong in cohesiveness, the adhesive in the material can play a binding role to the maximum extent, the connecting force of the paste and the connecting force of the paste and the current collector are greatly improved, and therefore the cycle life of the battery is prolonged.
It should be noted that, since the degree of fibrosis of the paste is the industry term of the zinc-nickel battery, there is no quantitative numerical representation at present, and since the penetration degree of the asphalt industry is similar to the degree of fibrosis, the penetration depth of the standard vertically penetrating into the paste sample at 25 ℃ and 5 seconds under a load of 100 g is defined as the penetration degree, which is 1/10 mm. The penetration of the paste prepared by the method is quantitatively analyzed at 25 ℃, the penetration is 35-45, and the penetration of the paste in the prior art is 55-60, so that the penetration and the fibrosis of the paste can be effectively increased, and the strength of the paste can be improved.
In addition, the equipment used in the preparation method is the existing mature equipment, the process is simple, the operability is strong, no dust is volatilized in the production process, and the preparation method is green, environment-friendly, energy-saving and economical.
In order to uniformly mix the negative electrode powder and the additive, in the step 1, the revolution speed of stirring is 10-20 rad/min; the rotation speed is 1000-2000 rad/min, and the revolution and rotation time is 5-15 min; the paste mixing rotation speed is mainly to mix solid powder (cathode material and additive) uniformly, and the low-speed rotation can disperse the agglomerated additive to realize the uniformity of the powder.
In order to improve the mixing uniformity of the mixed raw materials and the polytetrafluoroethylene emulsion, the polytetrafluoroethylene emulsion can be added into the mixed raw materials, because the addition amount of the polytetrafluoroethylene emulsion is small, the polytetrafluoroethylene emulsion is gradually and slowly added into the mixed raw materials, the contact between the polytetrafluoroethylene and the raw materials can be increased, the bonding effect of the polytetrafluoroethylene emulsion is fully exerted, and the uniform mixing is facilitated.
Similarly, in order to improve the mixing uniformity of the mixed powder and the paste medium, the paste medium can be added into the mixed powder, because although a certain amount of polytetrafluoroethylene emulsion is added into the mixed powder obtained in the step 2, the mixed powder can still maintain the powder state due to the small addition amount of the polytetrafluoroethylene emulsion, only the humidity is high, the paste medium is gradually and slowly added into the mixed powder, the paste medium can gradually contact with the mixed powder, and the paste medium is further fiberized under the stirring action, so that the paste in a lump shape is obtained. It should be noted that, if the mixed powder is added into the paste mixing medium, the part of the mixed powder added first cannot be further fiberized due to the low system viscosity, and the part of the mixed powder added later cannot be fully contacted with the paste mixing medium, so that a dough-like paste cannot be obtained.
Specifically, the paste mixing medium may be selected from alcohol, water and/or acetone, wherein the alcohol may be anhydrous alcohol, the volume fraction of the alcohol is 99% or more, the paste mixing medium may be selected from the group consisting of alcohol, acetone and a mixture of alcohol and acetone, the volume ratio of alcohol to acetone is 9-11: 11-9; from the viewpoint of cost, the paste mixing medium can be a paste mixing medium containing water, such as water or a mixed solution of alcohol and water, wherein the volume ratio of the alcohol to the water is 9-11: 11 to 9.
Specifically, in step 3, when alcohol or acetone is used as the paste mixing medium, the alcohol can rapidly fibrillate the polytetrafluoroethylene after the alcohol is added, so that the polytetrafluoroethylene expands and then wraps the solid mixed powder. In the step 3, the revolution speed of stirring is 40-50 rad/min, the rotation speed is 4000-5000 rad/min, the rotation time is 5-10 min, and the revolution time is 10-20 min, because the purpose of high-speed revolution is that revolution is a stirring effect, the uniformity of the whole paste and paste can be ensured, the paste and the paste can be agglomerated with each other, the paste can better enter subsequent paste sheet production equipment after the material is agglomerated, and the transportation and the storage are easier after the material is agglomerated. The purpose of high-speed rotation is as follows: the polytetrafluoroethylene is fiberized again by high-speed shearing, and simultaneously the polytetrafluoroethylene can be in better and faster contact with paste media under the regulation of high-speed shearing, so that the paste is more uniform, and the use amount of alcohol and the like and the paste media is reduced. The autorotation is high-speed shearing, and the time is too long, which can cause the network fracture of the formed polytetrafluoroethylene and reduce the fibrosis and the strength of the paste.
When other liquid (such as water, alcohol and water or alcohol and acetone) is used as the paste mixing medium, the revolution speed of stirring is 40-50 rad/min, the rotation speed is 1000-2000 rad/min, the rotation time is 5-10 min, and the revolution time is 10-20 min.
The paste for preparing the cathode of the zinc-nickel battery is prepared by the preparation method, and comprises 77-85% of cathode powder, 5-10% of additive, 1-5% of polytetrafluoroethylene and 8-17% of paste mixing medium by mass, and the penetration degree is 35-45.
Compared with the prior art, the beneficial effects of the paste for preparing the cathode of the zinc-nickel battery provided by the invention are basically the same as those of the preparation method, and are not repeated herein.
The additive comprises the following components in percentage by mass, specifically, the additive comprises calcium hydroxide, a conductive agent and sodium carboxymethyl cellulose, wherein the mass ratio of the calcium hydroxide to the conductive agent to the sodium carboxymethyl cellulose is (100-150): (50-100): (1-5). The paste body can be added with polytetrafluoroethylene emulsion in the preparation process, and contains a small amount of water, so that the sodium carboxymethyl cellulose can be promoted to exert the bonding effect.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.
Example one
In this embodiment, the paste includes, by mass, 80% of negative electrode powder, 7% of an additive, 3% of PTFE, and 10% of alcohol.
The paste is prepared by the following method:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain a mixed raw material, wherein the stirring revolution speed is 15 rad/min; the autorotation speed is 2000 rad/min; the revolution and rotation time of the paste mixer is 10 min;
step 2: and (2) adding the PTFE emulsion into the mixed raw material obtained in the step (1), and uniformly mixing and stirring to obtain mixed powder, wherein the stirring revolution speed is 30rad/min, the rotation speed is 3000rad/min, and the stirring time is 15 min.
And step 3: and (3) adding alcohol into the mixture obtained in the step (2), mixing and stirring uniformly, wherein the stirring revolution speed is 50rad/min, the rotation speed is 4000rad/min, the rotation time is 5min, and the revolution time is 15min, so that the paste for preparing the cathode of the zinc-nickel battery is obtained, and the penetration of the paste is 42.
Example two
In this embodiment, the paste includes, by mass, 77% of negative electrode powder, 10% of an additive, 5% of PTFE, and 8% of a paste mixing medium, where the paste mixing medium is water and alcohol, and the volume ratio of the water to the alcohol is 1: 1.
the paste is prepared by the following method:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain a mixed raw material, wherein the stirring revolution speed is 10 rad/min; the autorotation speed is 1500 rad/min; the revolution and rotation time of the paste mixer is 15 min;
step 2: and (2) adding the PTFE emulsion into the mixed raw material obtained in the step (1), and uniformly mixing and stirring to obtain mixed powder, wherein the stirring revolution speed is 20rad/min, the rotation speed is 4000rad/min, and the stirring time is 20 min.
And step 3: and (3) adding alcohol and water into the mixture obtained in the step (2), mixing and stirring uniformly, wherein the stirring revolution speed is 40rad/min, the rotation speed is 1500rad/min, the rotation time is 5min, and the revolution time is 10min, so that the paste for preparing the cathode of the zinc-nickel battery is obtained, and the penetration degree of the paste is 39.
EXAMPLE III
In this embodiment, the paste includes, by mass, 85% of a negative electrode powder, 5% of an additive, 1% of PTFE, and 9% of acetone.
The paste is prepared by the following method:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain a mixed raw material, wherein the stirring revolution speed is 20 rad/min; the autorotation speed is 2000 rad/min; the revolution and rotation time of the paste mixer is 5 min;
step 2: and (2) adding the PTFE emulsion into the mixed raw material obtained in the step (1), and uniformly mixing and stirring to obtain mixed powder, wherein the stirring revolution speed is 35rad/min, the rotation speed is 5000rad/min, and the stirring time is 15 min.
And step 3: and (3) adding acetone into the mixture obtained in the step (2), mixing and stirring uniformly, wherein the stirring revolution speed is 50rad/min, the rotation speed is 5000rad/min, the rotation time is 10min, and the revolution time is 20min, so as to obtain the paste for preparing the cathode of the zinc-nickel battery, and the penetration of the paste is 45.
Example four
In this embodiment, the paste includes, by mass, 77% of negative electrode powder, 5% of an additive, 1% of PTFE, and 17% of a paste mixing medium, where the paste mixing medium is acetone and alcohol, and the volume ratio of the two is 1: 1.
the paste is prepared by the following method:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain a mixed raw material, wherein the stirring revolution speed is 20 rad/min; the autorotation speed is 1000 rad/min; the revolution and rotation time of the paste mixer is 10 min;
step 2: and (2) adding the PTFE emulsion into the mixed raw material obtained in the step (1), and uniformly mixing and stirring to obtain mixed powder, wherein the stirring revolution speed is 45rad/min, the rotation speed is 4000rad/min, and the stirring time is 10 min.
And step 3: and (3) adding acetone into the mixture obtained in the step (2), mixing and stirring uniformly, wherein the stirring revolution speed is 40rad/min, the rotation speed is 4000rad/min, the rotation time is 10min, and the revolution time is 10min, so as to obtain the paste for preparing the cathode of the zinc-nickel battery, and the penetration of the paste is 36.
EXAMPLE five
In this embodiment, the paste includes, by mass, 80% of a negative electrode powder, 6% of an additive, 2% of PTFE, and 12% of a paste mixing medium, where the paste mixing medium is water.
The paste is prepared by the following method:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain a mixed raw material, wherein the stirring revolution speed is 10 rad/min; the autorotation speed is 1500 rad/min; the revolution and rotation time of the paste mixer is 15 min;
step 2: and (2) adding the PTFE emulsion into the mixed raw material obtained in the step (1), and uniformly mixing and stirring to obtain mixed powder, wherein the stirring revolution speed is 20rad/min, the rotation speed is 4000rad/min, and the stirring time is 20 min.
And step 3: and (3) adding water into the mixture obtained in the step (2), mixing and stirring uniformly, wherein the stirring revolution speed is 50rad/min, the rotation speed is 2000rad/min, the rotation time is 10min, and the revolution time is 20min, so that the paste for preparing the cathode of the zinc-nickel battery is obtained, and the penetration of the paste is 40.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (7)
1. A preparation method of paste for preparing a cathode of a zinc-nickel battery is characterized by comprising the following steps:
step 1: mixing and stirring the negative electrode powder and the additive uniformly to obtain raw material powder;
step 2: uniformly mixing and stirring the raw material powder and the polytetrafluoroethylene emulsion to obtain mixed powder, wherein the stirring revolution speed is 20-50 rad/min, the stirring rotation speed is 3000-5000 rad/min, and the revolution and rotation time is 10-20 min;
and step 3: mixing and stirring the mixed powder and the paste medium uniformly to obtain paste for preparing the cathode of the zinc-nickel battery; the paste comprises the following components in percentage by mass: 80-85% of negative electrode powder, 5-7% of additive, 1-3% of polytetrafluoroethylene and 9-10% of paste mixing medium;
the penetration degree of the paste for preparing the cathode of the zinc-nickel battery is 42-45;
the paste mixing medium is alcohol or mixed liquid of alcohol and acetone, the paste mixing medium does not contain water, and the volume ratio of the alcohol to the acetone is (9-11): 11-9, in the step 3, the stirring revolution speed is 40-50 rad/min, the rotation speed is 4000-5000 rad/min, the rotation time is 5-10 min, and the revolution time is 10-20 min;
the paste is in a dough shape;
the additive comprises calcium hydroxide, a conductive agent and sodium carboxymethyl cellulose, wherein the mass ratio of the calcium hydroxide to the conductive agent to the sodium carboxymethyl cellulose is (100-150): (50-100): (1-5).
2. The method for preparing the paste for preparing the negative electrode of the zinc-nickel battery as claimed in claim 1, wherein in the step 1, the revolution speed of stirring is 10-20 rad/min; the rotation speed is 1000-2000 rad/min, and the revolution and rotation time is 5-15 min.
3. The method for preparing a paste for a negative electrode of a zinc-nickel battery according to claim 1, wherein in the step 2, polytetrafluoroethylene emulsion is added to the mixed raw materials.
4. The method for preparing the paste for preparing the negative electrode of the zinc-nickel battery as claimed in claim 1, wherein in the step 3, a paste mixing medium is added to the mixed powder.
5. Paste for the production of a negative electrode for a zinc-nickel battery, characterized by being produced by the production method according to any one of claims 1 to 4.
6. The paste for preparing a negative electrode of a zinc-nickel battery as claimed in claim 5, wherein the paste is in the form of a dough.
7. The paste for preparing the cathode of the zinc-nickel battery as claimed in claim 5 or 6, wherein the additive comprises calcium hydroxide, a conductive agent and sodium carboxymethyl cellulose, and the mass ratio of the calcium hydroxide to the conductive agent to the sodium carboxymethyl cellulose is (100-150): (50-100): (1-5).
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| CN101202339A (en) * | 2006-12-15 | 2008-06-18 | 中国电子科技集团公司第十八研究所 | Method for preparation of pull pulp type flexibility zinc electrode |
| CN102024994A (en) * | 2010-11-30 | 2011-04-20 | 辽宁九夷三普电池有限公司 | Nickel-zinc secondary battery and preparation method thereof |
| CN109524625A (en) * | 2018-10-25 | 2019-03-26 | 超威电源有限公司 | A kind of cathode mixing paste method |
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| CN102044669B (en) * | 2010-12-01 | 2012-10-03 | 中南大学 | Zinc cathode active substance of zinc-nickel secondary battery and preparation method and application method thereof |
| CN106654211A (en) * | 2016-12-22 | 2017-05-10 | 深圳拓邦股份有限公司 | Slurry for lithium-ion battery and preparation method of slurry |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202339A (en) * | 2006-12-15 | 2008-06-18 | 中国电子科技集团公司第十八研究所 | Method for preparation of pull pulp type flexibility zinc electrode |
| CN102024994A (en) * | 2010-11-30 | 2011-04-20 | 辽宁九夷三普电池有限公司 | Nickel-zinc secondary battery and preparation method thereof |
| CN109524625A (en) * | 2018-10-25 | 2019-03-26 | 超威电源有限公司 | A kind of cathode mixing paste method |
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