CN114361396A - Preparation method of new energy battery electrode - Google Patents
Preparation method of new energy battery electrode Download PDFInfo
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- CN114361396A CN114361396A CN202111575287.7A CN202111575287A CN114361396A CN 114361396 A CN114361396 A CN 114361396A CN 202111575287 A CN202111575287 A CN 202111575287A CN 114361396 A CN114361396 A CN 114361396A
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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
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- 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
The invention relates to the technical field of batteries and discloses a preparation method of a new energy battery electrode. According to the preparation method of the new energy battery electrode, the positive electrode active materials are respectively ternary lithium manganese acid lithium, lithium iron phosphate and titanium suboxide, the fact that the titanium suboxide and the lithium iron phosphate of the new energy material are utilized is more uniform and effective compared with the traditional battery, the use stability is good, the titanium suboxide with good hydrophilicity can be uniformly dispersed in slurry, the conductivity of the electrode slurry is improved by matching with the use of a conductive agent, the viscosity of the slurry is improved by an additive, the slurry precipitation is prevented, the negative electrode uses an inert metal as the electrode material, the stability is good, the active material, the additive, the conductive agent and a metal mesh can be bonded together by a binder, and the preparation of the electrode is convenient.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a preparation method of a new energy battery electrode.
Background
The battery is an energy source, and refers to a structure that a metal electrode converts chemical energy into electric energy in an electrolyte solution, the battery has a positive electrode and a negative electrode, the battery has various types and specifications, and can be selected according to the requirements of people in a targeted manner, the performance parameters of the battery mainly comprise electromotive force, capacity, specific energy and resistance, and the battery can obtain stable current with stable voltage to realize stable power supply for a certain time.
The electrode is one of the main components of the battery, the materials required for manufacturing the electrode are different according to the difference of the battery, the dispersibility of the electrode slurry of the lithium ion battery with the publication number of CN109802096A in the prior art is moderate, the pulping efficiency is improved, and the performance of the battery is improved.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a new energy battery electrode preparation method, which aims to solve the problems that materials are not explicitly indicated in the scheme provided in the background art, and comparative research on materials for electrode manufacturing is not carried out, so that a new energy battery electrode preparation method is provided.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the new energy battery electrode comprises a metal mesh, an active material, a conductive agent, a binder, an additive and a lead, wherein the active material comprises a positive active material and a negative active material, and the lead comprises a positive lead and a negative lead.
Preferably, the preparation method of the new energy battery electrode comprises the following steps:
s1: preparing a positive electrode material, and respectively pouring the positive electrode active material, the additive and the conductive agent into a reaction kettle to be stirred and mixed for 20 minutes;
s2: preparing a negative electrode material, and respectively pouring a negative electrode active material, an additive and a conductive agent into a reaction kettle to be stirred and mixed for 20 minutes;
s3: then uniformly coating the mixed anode slurry and cathode slurry auxiliary binder on a metal mesh respectively;
s4: then rolling and drying the uniformly coated metal mesh;
s5: cutting the diaphragm according to the specification of the battery;
s6: and finally, connecting a lead to finish the manufacture of the electrode.
Preferably, the positive electrode active material includes lithium manganate, nickel oxide, titanium oxide, lithium iron phosphate, and the like.
Preferably, the negative electrode active material includes platinum metal, graphite, and the like.
Preferably, the conductive agent includes graphene, carbon black, and the like.
Preferably, the metal mesh comprises a copper mesh, an aluminum mesh, and the like.
Preferably, the color state of the titanium suboxide is blue black powder, and the titanium suboxide has high activity and is environment-friendly and nontoxic.
Preferably, the chemical composition of the lithium iron phosphate does not contain a heavy metal.
Compared with the prior art, the invention has the beneficial effects that:
according to the preparation method of the new energy battery electrode, the positive active materials of the new energy battery are respectively ternary lithium manganese acid lithium, lithium iron phosphate and titanium suboxide, and the research is respectively carried out, so that the utilization of the titanium suboxide and the lithium iron phosphate of the new energy material is more uniform and effective compared with the preparation of the traditional battery, the use stability is good, the titanium suboxide with good hydrophilicity can be uniformly dispersed in slurry, the use of a conductive agent is matched, the conductivity of electrode slurry is improved, the viscosity of the slurry is improved by an additive, the precipitation of the slurry is prevented, the negative electrode uses an inert metal as an electrode material, the stability is good, the active material, the additive, the conductive agent and a metal mesh can be bonded together by a binder, and the preparation of the electrode is convenient.
Drawings
FIG. 1 is a schematic view of a preparation process of the present invention;
FIG. 2 is a comparative illustration of materials of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a preparation method of a new energy battery electrode comprises a metal mesh, an active material, a conductive agent, a binder, an additive and a lead, wherein the active material comprises a positive active material and a negative active material, and the lead comprises a positive lead and a negative lead.
Example 1:
the preparation method of the new energy battery electrode comprises the following steps:
s1: preparing a positive electrode material, respectively pouring a positive electrode active material, an additive and a conductive agent into a reaction kettle, stirring and mixing for 20 minutes, sequentially adding the positive electrode active material lithium manganate, a binder, the additive and a graphene conductive agent, fully mixing all the materials in the closed stirring kettle, wherein the lithium manganate is a lithium ion source of an electrode, so that a lithium source is increased for a battery, the conductive agent can improve the conductivity of a positive plate, compensate the electronic conductivity of the positive electrode active material, and improve the liquid absorption effect of the positive electrode on an electrolyte, the use content of the conductive agent needs to be paid attention to, excessive active ingredients are few, too low the conductivity is poor, the battery is easy to generate polarization, the added additive reduces the irreversible reaction, the viscosity of slurry is improved, and the precipitation of the slurry is prevented;
s2: preparing a negative electrode material, respectively pouring a negative electrode active material, an additive and a conductive agent into a reaction kettle, stirring and mixing for 20 minutes, sequentially adding a negative electrode active material metal platinum, a water-based binder, the additive and a graphene conductive agent, fully mixing the materials in the closed stirring kettle, wherein the metal platinum is an inert metal and has good stability, the conductive agent can improve the conductivity of a negative electrode plate, compensate the electronic conductivity of the negative electrode active material, improve the reaction utilization rate, and the added additive improves the viscosity of slurry and prevents the slurry from precipitating;
s3: then, the mixed anode slurry and cathode slurry auxiliary binder are respectively and uniformly coated on the metal mesh, and the active material, the additive, the conductive agent and the metal mesh are bonded together by using the adaptive binder aiming at different electrodes, so that the electrode is more stable;
s4: then, the metal mesh which is uniformly coated is rolled and dried, so that the electrode slice is more stable;
s5: cutting the diaphragm according to the specification of the battery, and manufacturing battery electrodes with different specifications in a targeted manner;
s6: finally, connecting a lead to complete the manufacture of the electrode, and connecting the anode lead and the cathode lead to ensure that the electrode can be normally used;
the positive active material comprises lithium manganate, nickel oxide, titanium suboxide, lithium iron phosphate and other materials, and various active materials, can be used for pertinently selecting and manufacturing battery electrodes with different characteristics, and has good utilization effect and various selectivity;
the negative active material comprises metal platinum, graphite and other materials, and is used for preparing a negative electrode;
the conductive agent comprises substances such as graphene, carbon black and the like, and improves the conductivity of the active material;
the metal mesh comprises copper mesh, aluminum mesh and the like and provides attachment points for the electrode slurry;
the color state of the titanium dioxide is blue black powder, the titanium dioxide has high activity and is environment-friendly and nontoxic, and the material is a new energy material and is more environment-friendly in use;
the chemical components of the lithium iron phosphate do not contain heavy metals, and the lithium iron phosphate is a green material, is suitable for the requirements of the modern society and is a new energy material.
In example 1, the electrode has a good utilization effect for the preparation process and the material used for the conventional battery electrode, but the material itself has poor stability, is easily decomposed to generate gas, and does not utilize the long-term stable use of the battery.
Example 2:
the preparation method of the new energy battery electrode comprises the following steps:
s1: preparing a positive electrode material, respectively pouring a positive electrode active material, an additive and a conductive agent into a reaction kettle, stirring and mixing for 20 minutes, sequentially adding the positive electrode active material titanium monoxide, a binder, the additive and a carbon black conductive agent, fully mixing all the materials in the closed stirring kettle, wherein the titanium monoxide is the positive electrode active material, has good stability and can be stably used, the carbon black has a large surface area, is reasonably matched with the titanium monoxide material with good hydrophilicity, can be uniformly dispersed, the use content of the conductive agent needs to be noticed, too much active ingredients are less, too low the conductivity is poor, a battery is easy to generate polarization, the added additive reduces irreversible reaction, the viscosity of slurry is improved, and the precipitation of the slurry is prevented;
s2: preparing a negative electrode material, pouring a negative electrode active material, an additive and a conductive agent into a reaction kettle respectively, stirring and mixing for 20 minutes, adding the negative electrode active material metal platinum, a water-based binder, the additive and a carbon black conductive agent in sequence, and fully mixing the materials in a closed stirring kettle, wherein the metal platinum is an inert metal and has good stability;
s3: then, the mixed anode slurry and cathode slurry auxiliary binder are respectively and uniformly coated on the metal mesh, and the active material, the additive, the conductive agent and the metal mesh are bonded together by using the adaptive binder aiming at different electrodes, so that the electrode is more stable;
s4: then, the metal mesh which is uniformly coated is rolled and dried, so that the electrode slice is more stable;
s5: cutting the diaphragm according to the specification of the battery, and manufacturing battery electrodes with different specifications in a targeted manner;
s6: finally, connecting a lead to complete the manufacture of the electrode, and connecting the anode lead and the cathode lead to ensure that the electrode can be normally used;
the positive active material comprises lithium manganate, nickel oxide, titanium suboxide, lithium iron phosphate and other materials, and various active materials, can be used for pertinently selecting and manufacturing battery electrodes with different characteristics, and has good utilization effect and various selectivity;
the negative active material comprises metal platinum, graphite and other materials, and is used for preparing a negative electrode;
the conductive agent comprises substances such as graphene, carbon black and the like, and improves the conductivity of the active material;
the metal mesh comprises copper mesh, aluminum mesh and the like and provides attachment points for the electrode slurry;
the color state of the titanium dioxide is blue black powder, the titanium dioxide has high activity and is environment-friendly and nontoxic, and the material is a new energy material and is more environment-friendly in use;
the chemical components of the lithium iron phosphate do not contain heavy metals, and the lithium iron phosphate is a green material, is suitable for the requirements of the modern society and is a new energy material.
In example 2, the positive electrode active material uses titanium suboxide as a positive electrode active material, the titanium suboxide is a new energy material, and has superconducting performance, and the material used as an electrode material has low carbon and environmental protection effects, and the titanium suboxide has good thermal stability and can be well dispersed in water and resin, so that when slurry is prepared, the active material can be uniformly dispersed, the conductive effect is improved, and the motor has long service life and good stability due to the properties of high stability and various good resistances.
Example 3:
the preparation method of the new energy battery electrode comprises the following steps:
s1: preparing a positive electrode material, respectively pouring a positive electrode active material, an additive and a conductive agent into a reaction kettle, stirring and mixing for 20 minutes, sequentially adding the positive electrode active material lithium iron phosphate, a binder, the additive and the graphene conductive agent, fully mixing the materials in the closed stirring kettle, wherein the lithium iron phosphate is a lithium ion source, the conductive agent can improve the conductivity of a positive plate and compensate the electronic conductivity of the positive electrode active material, the use content of the conductive agent needs to be paid attention to, the active ingredient is less when the conductive agent is excessive, the conductivity is poor when the conductive agent is too low, the battery is easy to generate polarization, the added additive reduces the irreversible reaction, improves the viscosity of slurry and prevents the precipitation of the slurry;
s2: preparing a negative electrode material, respectively pouring a negative electrode active material, an additive and a conductive agent into a reaction kettle, stirring and mixing for 20 minutes, sequentially adding a negative electrode active material metal platinum, a water-based binder, the additive and a graphene conductive agent, fully mixing the materials in the closed stirring kettle, wherein the metal platinum is an inert metal and has good stability, the conductive agent can improve the conductivity of a negative electrode plate, compensate the electronic conductivity of the negative electrode active material, improve the reaction utilization rate, and the added additive improves the viscosity of slurry and prevents the slurry from precipitating;
s3: then, the mixed anode slurry and cathode slurry auxiliary binder are respectively and uniformly coated on the metal mesh, and the active material, the additive, the conductive agent and the metal mesh are bonded together by using the adaptive binder aiming at different electrodes, so that the electrode is more stable;
s4: then, the metal mesh which is uniformly coated is rolled and dried, so that the electrode slice is more stable;
s5: cutting the diaphragm according to the specification of the battery, and manufacturing battery electrodes with different specifications in a targeted manner;
s6: finally, connecting a lead to complete the manufacture of the electrode, and connecting the anode lead and the cathode lead to ensure that the electrode can be normally used;
the positive active material comprises lithium manganate, nickel oxide, titanium suboxide, lithium iron phosphate and other materials, and various active materials, can be used for pertinently selecting and manufacturing battery electrodes with different characteristics, and has good utilization effect and various selectivity;
the negative active material comprises metal platinum, graphite and other materials, and is used for preparing a negative electrode;
the conductive agent comprises substances such as graphene, carbon black and the like, and improves the conductivity of the active material;
the metal mesh comprises copper mesh, aluminum mesh and the like and provides attachment points for the electrode slurry;
the color state of the titanium dioxide is blue black powder, the titanium dioxide has high activity and is environment-friendly and nontoxic, and the material is a new energy material and is more environment-friendly in use;
the chemical components of the lithium iron phosphate do not contain heavy metals, and the lithium iron phosphate is a green material, is suitable for the requirements of the modern society and is a new energy material.
In embodiment 3, the lithium iron phosphate active material who uses compares with traditional electrode material, and its cycle life is long, and the charge-discharge cycle is longer than ternary lithium cell, can not release gas when facing the circumstances such as acupuncture striking, and the security is better, and low in manufacturing cost does not contain heavy metal in the lithium iron phosphate battery, can not cause the pollution to the environment, is a green battery, accords with the demand of advocating in the present world.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. A preparation method of a new energy battery electrode is characterized by comprising the following steps: the new energy battery electrode comprises a metal mesh, an active material, a conductive agent, a binder, an additive and a lead, wherein the active material comprises a positive active material and a negative active material, and the lead comprises a positive lead and a negative lead; the preparation method of the new energy battery electrode comprises the following steps:
s1: preparing a positive electrode material: respectively pouring the positive active material, the additive and the conductive agent into a reaction kettle, and stirring and mixing for 20 minutes;
s2: preparing a negative electrode material: respectively pouring the negative electrode active material, the additive and the conductive agent into a reaction kettle, and stirring and mixing for 20 minutes;
s3: respectively and uniformly coating the mixed anode slurry and cathode slurry auxiliary binder on a metal mesh;
s4: rolling and drying the uniformly coated metal mesh;
s5: cutting the diaphragm according to the specification of the battery;
s6: and connecting a lead to finish the manufacture of the electrode.
2. The preparation method of the new energy battery electrode according to claim 1, characterized in that: the positive active material comprises lithium manganate, nickel oxide, titanium suboxide, lithium iron phosphate and the like.
3. The preparation method of the new energy battery electrode according to claim 1, characterized in that: the negative electrode active material includes platinum metal, graphite, and the like.
4. The preparation method of the new energy battery electrode according to claim 1, characterized in that: the conductive agent comprises graphene, carbon black and the like.
5. The preparation method of the new energy battery electrode according to claim 1, characterized in that: the metal mesh comprises a copper mesh, an aluminum mesh and the like.
6. The preparation method of the new energy battery electrode according to claim 2, characterized in that: the chemical components of the lithium iron phosphate do not contain heavy metals.
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