CN107706423A - The additive of anode sizing agent and the anode sizing agent using the additive - Google Patents

The additive of anode sizing agent and the anode sizing agent using the additive Download PDF

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Publication number
CN107706423A
CN107706423A CN201710601726.4A CN201710601726A CN107706423A CN 107706423 A CN107706423 A CN 107706423A CN 201710601726 A CN201710601726 A CN 201710601726A CN 107706423 A CN107706423 A CN 107706423A
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graphene
multilayer chip
diamond
additive
layer
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许驩鑫
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Kunshan State Is New Energy Power Battery Co Ltd
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Kunshan State Is New Energy Power Battery Co Ltd
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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
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Anode sizing agent the invention discloses a kind of additive of anode sizing agent and using the additive, include each component of following weight percentage：Multi-layer graphene is 10 15%, the safe slurry of macromolecule is 10 15%, PVDF is 45 50%, SP is 10 15% and KS 6 is 10 15%, and the weight ratio of multi-layer graphene and the safe slurry of macromolecule is 1:1；The weight of amino resins and disilicon trioxide ratio is 3.5 4.5 in high molecule size:1；Multi-layer graphene includes multilayer chip graphene and diamond, and diamond is located between adjacent two layers of multilayer chip graphene, and the carbon atom of diamond and multilayer chip graphene corresponds.The additive of the present invention can improve the heat conductivility of material, in the case of internal short-circuit of battery, can form polymer film cladding Li+, block ion to pass through protection battery pack safety；The multi-layer graphene of addition, further improves heat-conduction effect, when occurring unexpected, quickly heat can shed battery, ensure cell safety.

Description

The additive of anode sizing agent and the anode sizing agent using the additive
Technical field
The present invention relates to anode sizing agent and its preparing technical field, more particularly to a kind of lithium ion battery anode sizing agent Additive and preparation method.
Background technology
Lithium ion battery：It is a kind of secondary cell (rechargeable battery), it relies primarily on lithium ion between a positive electrode and a negative electrode Movement carrys out work.In charge and discharge process, Li+Insertion and deintercalation are come and gone between two electrodes：During charging, Li+Taken off from positive pole It is embedding, negative pole is embedded in by electrolyte, negative pole is in rich lithium state；It is then opposite during electric discharge.Battery, which typically uses, contains elemental lithium Material is the representative of modern high performance battery as electrode.
At present, Study on Li-ion batteries is increasingly extensive, and the lithium ion battery as secondary green battery is shown than other Battery has the advantages of incomparable, and voltage platform is high, pollution-free, high-energy-density, small volume and in light weight etc..Current lithium ion Battery is mainly used in low discharging current, but due to the development of electric automobile etc., the performance of lithium ion battery is proposed higher It is required that.
By taking electric automobile as an example, consumer is exactly speed to an important evaluation index of electric automobile, and speed wants high Words, the power of battery is bigger, and the electric current of battery is big, and heat production is more, and the positive pole material of the lithium ion battery of prior art Material is generally ternary and LiFePO4, electric current is big, more than heat production in the case of, it is impossible to heat is shed in time, it is hidden to there is safety Suffer from, or even explode, cause personal injury, it is extremely dangerous.
Therefore the lithium ion battery material with high magnification heavy-current discharge performance is urgently studied, to adapt to the need in market Will.
The content of the invention
The present invention solves the technical problem of the additive for providing a kind of nominal price slurry and using the additive just Pole slurry, the additive can improve the heat conductivility of material, in the case of internal short-circuit of battery, can form polymer film Coat Li+, block ion to pass through protection battery pack safety；Meanwhile the multi-layer graphene of addition, further improve heat transfer effect Should, when occurring unexpected, quickly heat can be shed battery, ensure cell safety.
In order to solve the above technical problems, one aspect of the present invention is：A kind of addition of anode sizing agent is provided Agent, including the safe slurry of multi-layer graphene, macromolecule, PVDF, SP and KS-6, the weight percentage of each component are as follows：It is described Multi-layer graphene is 10-15%, the safe slurry of the macromolecule is 10-15%, the PVDF is 45-50%, the SP is 10- The 15% and KS-6 is 10-15%, and the weight ratio of the multi-layer graphene and the safe slurry of the macromolecule is 1:1；
The high molecule size includes amino resins and disilicon trioxide, and the amino resins and the disilicon trioxide Weight ratio be 3.5-4.5:1；
The multi-layer graphene includes multilayer chip graphene and diamond, and the diamond is located at multilayer chip graphene Adjacent two layers between, the carbon atom of the diamond and the multilayer chip graphene corresponds；
The weight ratio of the multilayer chip graphene and the diamond is 4-6:1；
The multilayer chip graphene is 6-8 lamellar graphenes, and every layer of thickness of the multilayer chip graphene is 0.2-0.5nm；The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.2-0.4nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.7-1.6nm.
Further say, the weight ratio of the multilayer chip graphene and the diamond is 4:1；
The number of plies of the multilayer chip graphene is 8 layers, and every layer of thickness of the multilayer chip graphene is 0.5nm； The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.3nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.9nm.
Further say, the multi-layer graphene is prepared in accordance with the following steps：
Step 1: multilayer chip graphene is prepared using chemical deposition：With cathode-ray on silica substrate surface One layer of nickel metal layer is deposited, the thickness of the nickel metal layer is 200-400nm；
Step 2: be passed through in the tube furnace of 950-1150 DEG C of temperature methane, hydrogen and ammonia composition gaseous mixture and Common graphite powder, and room temperature is cooled within 100ms rapidly, obtain multilayer chip graphene, multilayer chip stone described herein The number of plies of black alkene is 3-12 layers；
Step 3: more than 100,000 grades under cleanliness factor environment, by separating 6-8 with molecular knife after electron microscope observation Lamellar graphene；
Step 4: the 6-8 lamellars graphene that step 3 separates is mixed in proportion with diamond, in vacuum 100- Under 200Pa, 600-800 DEG C of high temperature, 34-38h is stirred, is got product.
Present invention also offers a kind of anode sizing agent of the additive using the anode sizing agent, including the additive, Also include solvent and major ingredient, the solvent is NMP, and the major ingredient is LiFePO4 or ternary, the LiFePO4 and described three The particle diameter of member is all 2-3 μm (D50)；
The weight ratio of the additive, the solvent and the major ingredient is 90-92：9-14：120-140.
Present invention also offers a kind of preparation method of described anode sizing agent, carry out in accordance with the following steps：
Step a, solvent, major ingredient, the safe slurry of macromolecule and PVDF are proportionally added into agitator, be evacuated to- 0.08~-0.09MPa, keep stirring 3.5-4.5h in the case of vacuum, it is cmpletely dissolved, produce mixture；
Step b, SP, KS-6 and multi-layer graphene are proportionally added into the mixture described in step a, be evacuated to- 0.08~-0.09MPa, keep stirring 2-4h in the case of vacuum, reach 8000~12000mPas to viscosity, produce institute State anode sizing agent.
The beneficial effects of the invention are as follows：
The present invention battery anode slurry additive, including the safe slurry of multi-layer graphene, macromolecule, PVDF, SP and KS-6, the thermal conductivity of battery can be improved, solve the problems, such as that battery has risk in high current and even exploded, greatly improve lithium The security of ion battery；
More preferably, multi-layer graphene and high polymer material, and high polymer material bag are added on the basis of original NMP Amino resins and disilicon trioxide are included, coordinates NMP, can be very good to be combined with positive electrode in coating process；And add High polymer material, in the case of internal short-circuit of battery, can be formed polymer film cladding Li+, ion is blocked by protecting Protect battery pack safety；
Wherein, multi-layer graphene is the new material doped with diamond, is had through research flake graphite alkene between same layer good Good conduction and heat conductivility, but at present it is difficult to solve the transmission of the heat and electronics between mutual lamella, multilayer of the invention Diamond is added in grapheme material, and diamond is Spherical Carbon, and mutual piece is served as during being combined with flake graphite alkene Bridge between layer so that turned between the adjacent layer of multi-layer graphene, greatly increase the thermal conductivity performance of battery； In hot environment, due to good heat conductivity, battery can be made faster can to transmit heat balance at work, also may be used To transfer heat to battery container faster outwards to dissipate, reduce internal temperature of battery and tend towards stability, meanwhile, well Electric conductivity can effectively reduce the internal resistance of battery, battery is reduced temperature rise at work；Improve the safety of battery Property；
Meanwhile multi-layer graphene is added, during stirring and coating, mixed with high polymer material, improve material Heat conductivility, when occurring unexpected, quickly heat can be shed battery, ensure cell safety.
Above description of the invention is only the general introduction of technical solution of the present invention, in order to better understand the skill of the present invention Art means, and being practiced according to the content of specification, with presently preferred embodiments of the present invention and coordinate accompanying drawing specifically below It is bright as after.
Brief description of the drawings
Fig. 1 is the structural representation of the multi-layer graphene of the present invention；
Fig. 2 is the action principle figure of the present invention；
Each several part mark is as follows in accompanying drawing：
Multi-layer graphene 100, multilayer chip graphene 101, carbon atom 102, diamond 103；
Normal battery operation 10, internal short-circuit of battery 20；
Positive pole 1, lithium ion 2, high polymer particle 3 and polymer film 4.
Embodiment
Illustrate the embodiment of the present invention below by way of particular specific embodiment, those skilled in the art can be by this Content disclosed in specification understands advantages of the present invention and effect easily.The present invention can also other different modes give Implement, i.e. without departing substantially under the scope of disclosed, different modification and change can be given.
A kind of additive of anode sizing agent, as shown in figure 1, including multi-layer graphene 100, the safe slurry of macromolecule, PVDF (Kynoar), SP (ultra-fine carbon dust) and KS-6 (electrically conductive graphite), the weight percentage of each component are as follows：The multilayer stone Black alkene is 10-15%, the safe slurry of the macromolecule is 10-15%, the PVDF is 45-50%, the SP be 10-15% and The KS-6 is 10-15%, and the weight ratio of the multi-layer graphene and the safe slurry of the macromolecule is 1:1；
The high molecule size includes amino resins and disilicon trioxide, and the amino resins and the disilicon trioxide Weight ratio be 3.5-4.5:1；
The multi-layer graphene 100 includes multilayer chip graphene 101 and diamond 103, and the diamond is located at multilayer Between adjacent two layers of flake graphite alkene, the carbon atom 102 of the diamond and the multilayer chip graphene corresponds；
The weight ratio of the multilayer chip graphene and the diamond is 3.3-5:1；
The multilayer chip graphene is 6-8 lamellar graphenes, and every layer of thickness of the multilayer chip graphene is 0.2-0.5nm；The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.2-0.4nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.7-1.6nm.
A kind of anode sizing agent of additive using the anode sizing agent, including the additive, in addition to solvent and master Material, the solvent are NMP, and the major ingredient is LiFePO4 or ternary, and the particle diameter of the LiFePO4 and the ternary is all 2-3 μm(D50)；
The weight ratio of the additive, the solvent and the major ingredient is 90-92：9-14：120-140.
Embodiment 1：A kind of additive of anode sizing agent, the weight percentage of each component are as follows:The multi-layer graphene For 10%, the safe slurry of the macromolecule be 10%, the PVDF is 50%, the SP is 15% and the KS-6 is 15%；
The weight of the amino resins and disilicon trioxide ratio is 3.5:1；
The weight ratio of the multilayer chip graphene and the diamond is 4:1；
The number of plies of the multilayer chip graphene is 8 layers, and every layer of thickness of the multilayer chip graphene is 0.5nm； The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.3nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.9nm.
Embodiment 2：A kind of additive of anode sizing agent, the weight percentage of each component are as follows:The multi-layer graphene For 15%, the safe slurry of the macromolecule be 15%, the PVDF is 50%, the SP is 10% and the KS-6 is 10%；
The weight of the amino resins and disilicon trioxide ratio is 4.5:1；
The weight ratio of the multilayer chip graphene and the diamond is 3.3:1；
The number of plies of the multilayer chip graphene is 6 layers, and every layer of thickness of the multilayer chip graphene is 0.4nm； The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.2nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.7nm.
Embodiment 3：A kind of additive of anode sizing agent, the weight percentage of each component are as follows:The multi-layer graphene For 12%, the safe slurry of the macromolecule be 12%, the PVDF is 48%, the SP is 15% and the KS-6 is 13%；
The weight of the amino resins and disilicon trioxide ratio is 3.8:1；
The weight ratio of the multilayer chip graphene and the diamond is 5:1；
The number of plies of the multilayer chip graphene is 7 layers, and every layer of thickness of the multilayer chip graphene is 0.2nm； The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.4nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 1.6nm.
Embodiment 4：A kind of additive of anode sizing agent, the weight percentage of each component are as follows:The multi-layer graphene For 14%, the safe slurry of the macromolecule be 14%, the PVDF is 45%, the SP is 13% and the KS-6 is 14%；
The weight of the amino resins and disilicon trioxide ratio is 4.0:1；
The weight ratio of the multilayer chip graphene and the diamond is 3.8:1；
The number of plies of the multilayer chip graphene is 6 layers, and every layer of thickness of the multilayer chip graphene is 0.3nm； The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.25nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 1.0nm.
Embodiment 5：A kind of additive of anode sizing agent, the weight percentage of each component are as follows:The multi-layer graphene For 13%, the safe slurry of the macromolecule be 13%, the PVDF is 47%, the SP is 12% and the KS-6 is 15%；
The weight of the amino resins and disilicon trioxide ratio is 4.2:1；
The weight ratio of the multilayer chip graphene and the diamond is 6:1；
The number of plies of the multilayer chip graphene is 8 layers, and every layer of thickness of the multilayer chip graphene is 0.35nm； The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.35nm；
The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 1.2nm.
Embodiment 6：A kind of anode sizing agent of additive using the anode sizing agent, including following weight percentage Component：The weight ratio of the additive, the NMP and the LiFePO4 is 90：14：120.
The LiFePO4 and the particle diameter of the ternary are all 2 μm (D50).
Embodiment 7：A kind of anode sizing agent of additive using the anode sizing agent, including following weight percentage Component：The weight ratio of the additive, the NMP and the LiFePO4 is 92：9：140.
The LiFePO4 and the particle diameter of the ternary are all 3 μm (D50).
Embodiment 8：A kind of anode sizing agent of additive using the anode sizing agent, including following weight percentage Component：The weight ratio of the additive, the NMP and the ternary is 91：12：130.
The LiFePO4 and the particle diameter of the ternary are all 2.5 μm (D50)；
Embodiments of the invention 1 are carried out in accordance with the following steps to the preparation method of the multi-layer graphene described in embodiment 5：
Step 1: multilayer chip graphene is prepared using chemical deposition：With cathode-ray on silica substrate surface One layer of nickel metal layer is deposited, the thickness of the nickel metal layer is 200-400nm；
Step 2: be passed through in the tube furnace of 950-1150 DEG C of temperature methane, hydrogen and ammonia composition gaseous mixture and Common graphite powder, and room temperature is cooled within 100ms rapidly, obtain multilayer chip graphene, multilayer chip stone described herein The number of plies of black alkene is 3-12 layers；
Step 3: more than 100,000 grades under cleanliness factor environment, by separating 6-8 with molecular knife after electron microscope observation Lamellar graphene；
Step 4: the 6-8 lamellars graphene that step 3 separates is mixed in proportion with diamond, in vacuum 100- Under 200Pa, 600-800 DEG C of high temperature, 34-38h is stirred, is got product.
Embodiments of the invention 6 are carried out in accordance with the following steps to the preparation method of the anode sizing agent described in embodiment 8：
Step a, solvent, major ingredient, the safe slurry of macromolecule and PVDF are proportionally added into agitator, be evacuated to- 0.08~-0.09MPa, keep stirring 3.5-4.5h in the case of vacuum, it is cmpletely dissolved, produce mixture；
Step b, SP, KS-6 and multi-layer graphene are proportionally added into the mixture described in step a, be evacuated to- 0.08~-0.09MPa, keep stirring 2-4h in the case of vacuum, reach 8000~12000mPas to viscosity, produce institute State anode sizing agent.
Working process and principle of the invention are as follows：
Multi-layer graphene and high polymer material are added on the basis of original NMP, and high polymer material includes amino tree Fat and disilicon trioxide, coordinate NMP, can be very good to be combined with positive pole in coating process；And the high polymer material of addition, In normal battery operation 10, when not short-circuit, in positive pole 1 and in Li+The surface of (lithium ion 2) forms high polymer particle 3, in battery In the case of internal short-circuit 20, polymer film 4 can be formed and coat Li+, ion is blocked by the way that protection battery pack is safe, such as Shown in Fig. 2.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure that bright specification and accompanying drawing content are made, or other related technical areas are directly or indirectly used in, similarly It is included within the scope of the present invention.

Claims (5)

  1. A kind of 1. additive of anode sizing agent, it is characterised in that：Including multi-layer graphene, the safe slurry of macromolecule, PVDF, SP and KS-6, the weight percentage of each component are as follows：The multi-layer graphene is 10-15%, the safe slurry of the macromolecule is 10- 15%th, the PVDF is 45-50%, the SP is 10-15% and the KS-6 is 10-15%, and the multi-layer graphene and The weight ratio of the safe slurry of macromolecule is 1:1；
    The high molecule size includes amino resins and disilicon trioxide, and the weight of the amino resins and the disilicon trioxide It is 3.5-4.5 to measure ratio:1；
    The multi-layer graphene includes multilayer chip graphene and diamond, and the diamond is located at the phase of multilayer chip graphene Between adjacent two layers, the carbon atom of the diamond and the multilayer chip graphene corresponds；
    The weight ratio of the multilayer chip graphene and the diamond is 4-6:1；
    The multilayer chip graphene is 6-8 lamellar graphenes, and every layer of thickness of the multilayer chip graphene is 0.2- 0.5nm；The interlamellar spacing of the adjacent two layers of the multilayer chip graphene is 0.2-0.4nm；
    The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.7-1.6nm.
  2. 2. the additive of anode sizing agent according to claim 1, it is characterised in that：
    The weight ratio of the multilayer chip graphene and the diamond is 4:1；
    The number of plies of the multilayer chip graphene is 8 layers, and every layer of thickness of the multilayer chip graphene is 0.5nm；It is described The interlamellar spacing of the adjacent two layers of multilayer chip graphene is 0.3nm；
    The diamond is Spherical Carbon, and the particle diameter of the Spherical Carbon is 0.9nm.
  3. 3. the additive of anode sizing agent according to claim 1, it is characterised in that：The multi-layer graphene is in accordance with the following steps Prepare：
    Step 1: multilayer chip graphene is prepared using chemical deposition：Deposited with cathode-ray on silica substrate surface One layer of nickel metal layer, the thickness of the nickel metal layer is 200-400nm；
    Step 2: methane, the gaseous mixture of hydrogen and ammonia composition and common are passed through in the tube furnace of 950-1150 DEG C of temperature Graphite powder, and room temperature is cooled within 100ms rapidly, obtain multilayer chip graphene, multilayer chip graphene described herein The number of plies be 3-12 layers；
    Step 3: more than 100,000 grades under cleanliness factor environment, by separating 6-8 synusia with molecular knife after electron microscope observation Shape graphene；
    Step 4: the 6-8 lamellars graphene that step 3 separates is mixed in proportion with diamond, vacuum 100-200Pa, Under 600-800 DEG C of high temperature, 34-38h is stirred, is got product.
  4. 4. a kind of usage right requires the anode sizing agent of the additive of 1 anode sizing agent, it is characterised in that：Including the addition Agent, in addition to solvent and major ingredient, the solvent are NMP, and the major ingredient is LiFePO4 or ternary, the LiFePO4 and described The particle diameter of ternary is all 2-3 μm (D50)；
    The weight ratio of the additive, the solvent and the major ingredient is 90-92：9-14：120-140.
  5. A kind of 5. preparation method of anode sizing agent according to claim 4, it is characterised in that：Carry out in accordance with the following steps：
    Step a, solvent, major ingredient, the safe slurry of macromolecule and PVDF are proportionally added into agitator, are evacuated to -0.08 ~-0.09MPa, keep stirring 3.5-4.5h in the case of vacuum, it is cmpletely dissolved, produce mixture；
    Step b, SP, KS-6 and multi-layer graphene are proportionally added into the mixture described in step a, it is evacuated to -0.08~- 0.09MPa, keep stirring 2-4h in the case of vacuum, reach 8000~12000mPas to viscosity, produce the positive pole slurry Material.
CN201710601726.4A 2017-07-21 2017-07-21 The additive of anode sizing agent and the anode sizing agent using the additive Pending CN107706423A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108520960A (en) * 2018-06-01 2018-09-11 江苏芯界新能源科技有限公司 A kind of additive of anode sizing agent and preparation method thereof
CN113193197A (en) * 2021-04-26 2021-07-30 河北师范大学 Preparation method of lithium iron phosphate additive for cathode material of commercial lithium battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108520960A (en) * 2018-06-01 2018-09-11 江苏芯界新能源科技有限公司 A kind of additive of anode sizing agent and preparation method thereof
CN113193197A (en) * 2021-04-26 2021-07-30 河北师范大学 Preparation method of lithium iron phosphate additive for cathode material of commercial lithium battery
CN113193197B (en) * 2021-04-26 2022-03-11 河北师范大学 Preparation method of lithium iron phosphate additive for cathode material of commercial lithium battery

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