CN114864943A - Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof - Google Patents

Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof Download PDF

Info

Publication number
CN114864943A
CN114864943A CN202210544724.7A CN202210544724A CN114864943A CN 114864943 A CN114864943 A CN 114864943A CN 202210544724 A CN202210544724 A CN 202210544724A CN 114864943 A CN114864943 A CN 114864943A
Authority
CN
China
Prior art keywords
weight
iron phosphate
lithium iron
graphene
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210544724.7A
Other languages
Chinese (zh)
Inventor
王奉瑾
戴雪青
胡志坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Carbon Guide Technology Co.,Ltd.
Original Assignee
Zhongshan Sililai Equipment Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongshan Sililai Equipment Technology Co ltd filed Critical Zhongshan Sililai Equipment Technology Co ltd
Priority to CN202210544724.7A priority Critical patent/CN114864943A/en
Publication of CN114864943A publication Critical patent/CN114864943A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • 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
    • H01M2004/028—Positive 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

The application discloses lithium iron phosphate battery conductive paste using graphene and a preparation method thereof, wherein the conductive paste comprises: 0.003 to 0.005 part by weight of graphene, 0.7 to 0.8 part by weight of carbon nanotube, 2.5 to 3.5 parts by weight of polyvinylidene fluoride, 5.5 to 6.5 parts by weight of conductive carbon black, 98 to 100 parts by weight of N-methylpyrrolidone, and 0.021 to 0.024 part by weight of dispersant. The conductive slurry can improve the conductivity of the lithium iron phosphate positive electrode material, provides more lithium dissolving channels for the positive electrode material, reduces the internal resistance of the battery, brings about the change of better performance of the battery, generally speaking, the conductive slurry can reduce the internal resistance of the lithium iron phosphate battery ten times, and the energy density is improved by 15% -20%.

Description

Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof
Technical Field
The application relates to the technical field of lithium iron phosphate battery conductive paste, in particular to lithium iron phosphate battery conductive paste using graphene and a preparation method thereof.
Background
In recent years, with the development of scientific technology and the rising demand for new energy, lithium ion batteries have become a hot point of attention in the field related to new energy. At present, lithium ion batteries are mainly used for mobile electronic devices, and the application of the lithium ion batteries begins to develop into miniature electrical appliances with small volume and light weight, and also begins to develop into large electric devices, such as power batteries of new energy automobiles, so that higher requirements on the performance of the lithium ion batteries are provided. In the application aspect of new energy electric automobiles, the power lithium ion battery is required to have excellent performances such as high energy density, large charge and discharge power, long cycle service life and the like. However, the lithium ion battery has poor conductivity of the cathode material, which seriously affects the performance of the lithium ion battery, and therefore, it is necessary to improve the conductivity of the cathode material and improve the utilization efficiency of the cathode material by adding the conductive paste. Therefore, it is necessary to develop a conductive paste for a lithium ion battery positive electrode material with excellent performance.
Disclosure of Invention
The application provides a lithium iron phosphate battery conductive slurry using graphene and a preparation method thereof, which can improve the conductivity of a lithium iron phosphate positive electrode material.
The following technical scheme is adopted in the application:
the application provides an iron phosphate lithium battery conductive paste using graphene, which comprises: 0.003 to 0.005 part by weight of graphene, 0.7 to 0.8 part by weight of carbon nanotube, 2.5 to 3.5 parts by weight of polyvinylidene fluoride, 5.5 to 6.5 parts by weight of conductive carbon black, 98 to 100 parts by weight of N-methyl pyrrolidone and 0.021 to 0.024 part by weight of dispersant.
Further, graphene is 0.005 parts by weight.
Further, the carbon nanotube was 0.8 parts by weight.
Further, polyvinylidene fluoride was 3.5 parts by weight.
Further, the conductive carbon black was 5.5 parts by weight.
Further, N-methylpyrrolidone was 100 parts by weight.
Further, the weight of the dispersant was 3% of the weight of the carbon nanotubes.
The application also provides a preparation method of the lithium iron phosphate battery conductive paste, which comprises the following steps: dissolving polyvinylidene fluoride, conductive carbon black and graphene by using N-methylpyrrolidone to prepare a first solution. The carbon nanotubes are dissolved using N-methylpyrrolidone and a dispersant to prepare a second solution. And mixing the first solution and the second solution until the viscosity is 1450-1550mPa.s to prepare the conductive paste.
Further, a first solution was prepared using a 50% formula amount of N-methylpyrrolidone. A second solution was prepared using a 50% formula amount of N-methylpyrrolidone.
Further, the viscosity was 1500 mpa.s.
Compared with the prior art, the method has the following beneficial effects:
the conductive slurry can improve the conductivity of the lithium iron phosphate positive electrode material, provides more lithium dissolving channels for the positive electrode material, reduces the internal resistance of the battery, brings about the change of better performance of the battery, generally speaking, the conductive slurry can reduce the internal resistance of the lithium iron phosphate battery ten times, and the energy density is improved by 15% -20%.
Detailed Description
The technical method in the embodiments of the present application will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
An embodiment of the present application provides a lithium iron phosphate battery conductive paste using graphene, including: 0.003 to 0.005 part by weight (e.g., 0.003 part by weight, 0.004 part by weight, 0.005 part by weight), 0.7 to 0.8 part by weight (e.g., 0.7 part by weight, 0.75 part by weight, 0.8 part by weight) of a carbon nanotube, 2.5 to 3.5 parts by weight (e.g., 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight) of polyvinylidene fluoride, 5.5 to 6.5 parts by weight (e.g., 5.5 parts by weight, 6 parts by weight, 6.5 parts by weight) of a conductive carbon black, 98 to 100 parts by weight (e.g., 98 parts by weight, 99 parts by weight, 100 parts by weight) of N-methylpyrrolidone, 0.021 to 0.024 part by weight (e.0.021 part by weight, 0.022 part by weight, 0.024 part by weight) of a dispersant.
The graphene in the conductive slurry can improve the conductivity of the lithium iron phosphate positive electrode material, provide more lithium-dissolving channels for the positive electrode material, reduce the internal resistance of the battery, bring about better change of the performance of the battery, generally speaking, the internal resistance of the lithium iron phosphate battery can be reduced by ten times by using the graphene, and the energy density is improved by 15% -20%.
It is considered that graphene is used as a positive electrode material, and the graphene is completely coated on a lithium iron phosphate material, so that the lithium iron phosphate can be completely in surface contact with the graphene. Meanwhile, for a graphene material used in the battery, the sheet diameter should not be too large, and the coating of the lithium iron phosphate particles cannot be realized if the sheet diameter is too large, and meanwhile, the number of layers is good due to the single layer, and only the single-layer graphene can ensure enough flexibility, so that the coating can be just realized.
The positive electrode material uses graphene, the core lies in that the surface area of the used graphene is matched with the total surface area of lithium iron phosphate, and excessive graphene consumes additional lithium ions, which brings the disadvantages of low initial effect and insufficient total energy density.
In the use of the material, the particle size of lithium iron phosphate directly influences the use amount of graphene, the surface area of the lithium iron phosphate particles is S = pi x R, R is the diameter of the lithium iron phosphate particles, the volume of the lithium iron phosphate particles is V = (4/3) pi R ^3, the larger the particles are, the smaller the total surface area is, the total surface area of the lithium iron phosphate is inversely proportional to the third power of the particle diameter, and the use amount of the graphene is proportional to the total surface area of the lithium iron phosphate. According to the application, the addition amount of the graphene is 0.003-0.005 part by weight according to the difference of the sizes of the lithium iron phosphate particles.
In addition, the dispersant is specifically a carbon nanotube dispersant, such as JW-6, YY-502A.
Preferably, the graphene is 0.005 parts by weight. The carbon nanotubes were 0.8 parts by weight. 3.5 parts by weight of polyvinylidene fluoride. The conductive carbon black was 5.5 parts by weight. The weight of N-methyl pyrrolidone is 100 weight portions. The weight of the dispersant was 3% of the weight of the carbon nanotubes, that is, 0.024 part by weight.
The application also provides a preparation method of the lithium iron phosphate battery conductive paste, which comprises the following steps: dissolving polyvinylidene fluoride, conductive carbon black and graphene by using N-methyl pyrrolidone to prepare a first solution. The carbon nanotubes are dissolved using N-methylpyrrolidone and a dispersant to prepare a second solution. And mixing the first solution and the second solution until the viscosity is 1450-1550mPa.s to prepare the conductive paste.
Wherein a first solution is prepared using a 50% formula amount of N-methylpyrrolidone. A second solution was prepared using a 50% formula amount of N-methylpyrrolidone.
And mixing the first solution and the second solution, and fully stirring by using a homogenizer to finally reach viscosity of 1450-1550mPa. Preferably, the viscosity is 1500 mpa.s.
In addition, the conductive paste is stored in a low-temperature shading place. The storage temperature is not more than 20 ℃, the storage time is not more than three months, the viscosity is measured again before use, and if the viscosity does not reach the standard, the homogenizer is required to be used again for stirring.
The following are specific examples:
example 1
The formula is as follows:
according to 100g of each part by weight, 0.004 part by weight of graphene, 0.7 part by weight of carbon nano tube, 2.5 parts by weight of polyvinylidene fluoride, 6 parts by weight of conductive carbon black, 98 parts by weight of N-methyl pyrrolidone and 0.021 part by weight of dispersing agent.
The preparation process comprises the following steps:
a first solution was prepared by dissolving polyvinylidene fluoride, conductive carbon black and graphene with 50% formula amount of N-methyl pyrrolidone. The second solution was prepared by dissolving carbon nanotubes using 50% of the formula amount of N-methylpyrrolidone and dispersant. And mixing the first solution and the second solution, and then fully stirring by using a homogenizer to finally reach the viscosity of 1500mPa.s, thus obtaining the conductive slurry.
After the conductive paste of this example was mixed with 2.5 μm lithium iron phosphate, the energy density of the battery was 180 milliamp hour/gram.
Example 2
The formula is as follows:
the weight portions of the carbon nano-tube, the polyvinylidene fluoride, the conductive carbon black and the dispersant are 100g, 0.005 part by weight of graphene, 0.8 part by weight of carbon nano-tube, 3.5 parts by weight of polyvinylidene fluoride, 5.5 parts by weight of conductive carbon black, 100 parts by weight of N-methylpyrrolidone and 0.024 part by weight of dispersant.
The preparation process comprises the following steps:
a first solution was prepared by dissolving polyvinylidene fluoride, conductive carbon black and graphene with 50% formula amount of N-methyl pyrrolidone. The second solution was prepared by dissolving the carbon nanotubes using 50% of the formula amount of N-methylpyrrolidone and a dispersant. And mixing the first solution and the second solution, and then fully stirring by using a homogenizer to finally reach the viscosity of 1500mPa.s to obtain the conductive slurry.
When the conductive paste of this example was mixed with 3.6 μm lithium iron phosphate, the energy density of the battery was 193 milliamp hour/gram.
Example 3
The formula is as follows:
the weight portions of 100g of graphene, 0.003 weight portion of carbon nano tube, 3 weight portions of polyvinylidene fluoride, 6.5 weight portions of conductive carbon black, 99 weight portions of N-methyl pyrrolidone and 0.024 weight portion of dispersing agent.
The preparation process comprises the following steps:
a first solution was prepared by dissolving polyvinylidene fluoride, conductive carbon black and graphene with 50% formula amount of N-methyl pyrrolidone. The second solution was prepared by dissolving the carbon nanotubes using 50% of the formula amount of N-methylpyrrolidone and a dispersant. And mixing the first solution and the second solution, and then fully stirring by using a homogenizer to finally reach the viscosity of 1500mPa.s to obtain the conductive slurry.
When the conductive paste of this example was mixed with 1.7 μm lithium iron phosphate, the energy density of the battery was 174 milliamp hour/g.
The foregoing shows and describes the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are presented solely for purposes of illustrating the principles of the application, and that various changes and modifications may be made without departing from the spirit and scope of the application, which is defined by the appended claims, the specification, and equivalents thereof.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting the protection scope of the present application, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims (10)

1. A lithium iron phosphate battery conductive paste using graphene, comprising: 0.003 to 0.005 part by weight of graphene, 0.7 to 0.8 part by weight of carbon nanotube, 2.5 to 3.5 parts by weight of polyvinylidene fluoride, 5.5 to 6.5 parts by weight of conductive carbon black, 98 to 100 parts by weight of N-methyl pyrrolidone and 0.021 to 0.024 part by weight of dispersant.
2. The lithium iron phosphate battery conductive paste according to claim 1,
the graphene is 0.005 part by weight.
3. The lithium iron phosphate battery conductive paste according to claim 1,
the carbon nanotube is 0.8 parts by weight.
4. The lithium iron phosphate battery conductive paste according to claim 1,
the polyvinylidene fluoride content was 3.5 parts by weight.
5. The lithium iron phosphate battery conductive paste according to claim 1,
the conductive carbon black was 5.5 parts by weight.
6. The lithium iron phosphate battery conductive paste according to claim 1,
the weight portion of the N-methyl pyrrolidone is 100.
7. The lithium iron phosphate battery conductive paste according to claim 1,
the weight of the dispersant was 3% of the weight of the carbon nanotubes.
8. A method for preparing a lithium iron phosphate battery conductive paste according to any one of claims 1 to 7, characterized by comprising the steps of:
dissolving polyvinylidene fluoride, conductive carbon black and graphene by using N-methyl pyrrolidone to prepare a first solution;
dissolving the carbon nano tube by using the N-methyl pyrrolidone and the dispersing agent to prepare a second solution;
and mixing the first solution and the second solution until the viscosity is 1450-1550mPa.s to prepare the conductive paste.
9. The method according to claim 8,
preparing said first solution using said N-methylpyrrolidone in a formula amount of 50%;
the second solution was prepared using the N-methylpyrrolidone in a 50% formula amount.
10. The method according to claim 8,
the viscosity was 1500 mpa.s.
CN202210544724.7A 2022-05-19 2022-05-19 Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof Pending CN114864943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210544724.7A CN114864943A (en) 2022-05-19 2022-05-19 Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210544724.7A CN114864943A (en) 2022-05-19 2022-05-19 Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof

Publications (1)

Publication Number Publication Date
CN114864943A true CN114864943A (en) 2022-08-05

Family

ID=82638637

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210544724.7A Pending CN114864943A (en) 2022-05-19 2022-05-19 Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof

Country Status (1)

Country Link
CN (1) CN114864943A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406070A (en) * 2015-12-18 2016-03-16 山东精工电子科技有限公司 Preparation method of lithium ion battery positive pole size
CN107492661A (en) * 2017-08-17 2017-12-19 济宁利特纳米技术有限责任公司 A kind of graphene lithium electricity electrocondution slurry and preparation method thereof
CN109360990A (en) * 2018-12-03 2019-02-19 重庆市典盈新材料科技有限公司 A kind of LiFePO4 battery core positive conductive agent slurry and preparation method thereof
CN113036143A (en) * 2021-03-10 2021-06-25 哈尔滨万鑫石墨谷科技有限公司 Preparation method of graphene composite conductive slurry
CN113745516A (en) * 2021-08-25 2021-12-03 金川集团股份有限公司 Preparation method of graphene composite conductive slurry for lithium battery
CN114127982A (en) * 2019-10-04 2022-03-01 株式会社Lg新能源 Electrode and secondary battery including the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406070A (en) * 2015-12-18 2016-03-16 山东精工电子科技有限公司 Preparation method of lithium ion battery positive pole size
CN107492661A (en) * 2017-08-17 2017-12-19 济宁利特纳米技术有限责任公司 A kind of graphene lithium electricity electrocondution slurry and preparation method thereof
CN109360990A (en) * 2018-12-03 2019-02-19 重庆市典盈新材料科技有限公司 A kind of LiFePO4 battery core positive conductive agent slurry and preparation method thereof
CN114127982A (en) * 2019-10-04 2022-03-01 株式会社Lg新能源 Electrode and secondary battery including the same
CN113036143A (en) * 2021-03-10 2021-06-25 哈尔滨万鑫石墨谷科技有限公司 Preparation method of graphene composite conductive slurry
CN113745516A (en) * 2021-08-25 2021-12-03 金川集团股份有限公司 Preparation method of graphene composite conductive slurry for lithium battery

Similar Documents

Publication Publication Date Title
CN109921090B (en) Lithium ion all-solid-state full battery and preparation method thereof
TW201125183A (en) Lithium secondary battery
CN103208618B (en) Carbon in lithium ion battery sulphur composite positive pole and preparation method thereof
CN109659560B (en) Lithium cobalt phosphate cathode material for lithium ion battery and preparation method
Jiao et al. A novel polar copolymer design as a multi-functional binder for strong affinity of polysulfides in lithium-sulfur batteries
WO2021088354A1 (en) Core-shell nickel ferrite and preparation method therefor, nickel ferrite@c material, preparation method therefor, and use thereof
CN109449399B (en) Hollow hybrid microsphere for lithium ion battery negative electrode material and preparation method thereof
CN113659125B (en) Silicon-carbon composite material and preparation method thereof
CN112421006A (en) Preparation method of lithium ion battery anode material
CN112259724A (en) Composite positive electrode material, preparation method thereof, lithium battery positive electrode material and lithium battery
CN113644271B (en) Sodium supplement additive for negative electrode of sodium ion battery and negative electrode material
CN114843517A (en) Ternary cathode material conductive slurry using graphene and preparation method thereof
CN106784996A (en) A kind of high power density lithium ion battery
CN112435861B (en) Positive electrode of hybrid capacitor and preparation method and application thereof
CN105870401A (en) Application method of graphene as conductive agent to negative electrode slurry of lithium ion battery
CN112928240A (en) Lithium ion battery positive plate and preparation method thereof
CN112864387A (en) Negative electrode slurry and preparation method and application thereof
CN113921812B (en) Ultra-high power density sodium ion battery and preparation method thereof
WO2016202276A1 (en) Anode material and battery
CN114864943A (en) Lithium iron phosphate battery conductive slurry using graphene and preparation method thereof
CN114914448A (en) Lithium cobaltate cathode material conductive slurry using graphene and preparation method thereof
CN113161603A (en) Novel potassium ion battery and preparation method thereof
Ma et al. Low‐temperature performance optimization of LiFePO4‐based batteries
Wu et al. Flexible CNT/S-GO composite film without current collector for high-energy density lithium-sulfur batteries
CN108232130A (en) A kind of high specific energy negative electrode of lithium ion battery and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20231026

Address after: No. 4 Guanyong Village Section, Shilian Road, Shiji Town, Panyu District, Guangzhou City, Guangdong Province, 511400 (factory building)

Applicant after: Guangzhou Carbon Guide Technology Co.,Ltd.

Address before: 528437 industrial plant in zone B, second floor, No. 3 Shabian Road, Torch Development Zone, Zhongshan City, Guangdong Province

Applicant before: Zhongshan sililai Equipment Technology Co.,Ltd.