CN108807845A - A kind of button full battery and preparation method thereof of metatitanic acid pole piece and graphite pole piece composition - Google Patents
A kind of button full battery and preparation method thereof of metatitanic acid pole piece and graphite pole piece composition Download PDFInfo
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- CN108807845A CN108807845A CN201810878961.0A CN201810878961A CN108807845A CN 108807845 A CN108807845 A CN 108807845A CN 201810878961 A CN201810878961 A CN 201810878961A CN 108807845 A CN108807845 A CN 108807845A
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
- H01M10/0427—Button cells
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses the button full batteries and preparation method thereof that a kind of metatitanic acid pole piece and graphite pole piece form.The preparation method of the button full battery includes：The metatitanic acid pole piece and graphite pole piece of preparation prepare metal lithium sheet；Using graphite pole piece as anode pole piece, metal lithium sheet is assembled into button full battery one, then part discharge treatment as cathode pole piece in glove box；It dismantles the button full battery one after discharge treatment to obtain lithium intercalated graphite pole piece, then using lithium intercalated graphite pole piece as cathode pole piece, using metatitanic acid pole piece as anode pole piece, button full battery two is assembled into glove box；Button full battery two is stood into finished product.The present invention to graphite pole piece by carrying out lithium ion insertion, to obtain the button full battery using metatitanic acid pole piece as anode pole piece, using graphite pole piece as cathode pole piece, and the security and stability of the button full battery is good, rapid charging performance is excellent, have extended cycle life, high temperature resistance is good.
Description
Technical field
The button formed the present invention relates to battery technology field more particularly to a kind of metatitanic acid pole piece and graphite pole piece is entirely electric
Pond and preparation method thereof.
Background technology
For lithium titanate battery in charge and discharge, lithium ion insertion will not cause the variation of lithium titanate crystalline structure with deintercalation, because
This has little effect the structure of lithium titanate material.Just because of this, lithium titanate is also referred to as " zero strain material ".Lithium titanate electricity
Compared with the ferric phosphate lithium cell of current " trickle charge is at most at most used 2 years using 5 years, fast charge ", advantage is very prominent in pond.According to
Test data measures, common batteries service life cycle average out to 3000 times, and the complete charge and discharge cycles number of lithium titanate battery
Up to 30,000 times or more, after using 10 years as power battery, energy-storage battery may can also be used as again with 20 years.Titanium at present
Sour lithium is used as the negative material of battery；It, can only be with the electricity containing lithium since lithium titanate itself can not provide lithium source
Pole material is arranged in pairs or groups, so can not directly make battery between metatitanic acid pole piece and graphite.However, the present invention proposes one kind
The button full battery and preparation method thereof of metatitanic acid pole piece and graphite pole piece composition.
Invention content
To solve the above-mentioned problems, the present invention provide a kind of metatitanic acid pole piece and graphite pole piece composition button full battery and
Preparation method, the present invention to graphite pole piece by carrying out lithium ion insertion, to obtain using metatitanic acid pole piece as positive pole
Piece, the button full battery using graphite pole piece as cathode pole piece, the security and stability of the button full battery is good, rapid charging performance is excellent
It is different, have extended cycle life, high temperature resistance it is good.
In order to achieve the above purpose, technical scheme is as follows：
Present invention aims at a kind of preparation method for the button full battery for providing metatitanic acid pole piece and graphite pole piece composition,
Step is：
(1) metatitanic acid pole piece and graphite pole piece, are then dried in vacuo by the metatitanic acid pole piece and graphite pole piece prepared,
Prepare metal lithium sheet；
(2) using graphite pole piece as anode pole piece, it is complete to be assembled into button as cathode pole piece in glove box for metal lithium sheet
Then button full battery one is placed in test cabinet by battery one, with 12~14h of test software discharge treatment；
(3) the button full battery one after discharge treatment is put into glove box, dismantles button full battery one and obtains lithium intercalated graphite
Pole piece, using metatitanic acid pole piece as anode pole piece, is assembled into then using lithium intercalated graphite pole piece as cathode pole piece in glove box
Button full battery two.
(4) button full battery two is stood into 2h~obtain button full battery finished product for 24 hours.
Further, in the step (1) metatitanic acid pole piece preparation process：By lithium titanate, conductive agent, binder solution
By (80~83):(8~10):(7~12) weight ratio is added in beaker, and additional NMP obtains mixed solution, the addition of NMP
For lithium titanate, conductive agent and binder gross mass 5%~10%；Beaker is put into high speed dispersor, with 1500~
5~10min of rotating speed high speed rotation of 2000r/min；The mixed solution of mixing is uniformly coated on copper foil with automatic coating machine；
The copper foil coated is put into baking oven, 60~80min is toasted at a temperature of 80~100 DEG C；By the pole piece electromotive roller after drying
Press carries out roll-in, and roll-in to compacted density is 1.1~1.3g/cm3；The good pole piece of roll-in is obtained into diameter with punching machine punch
For the metatitanic acid pole piece of 10~12mm.
Further, in the step (1) graphite pole piece preparation process：By graphite, conductive agent, binder by (92~
95):(1.5~2.5):(2.5~6.5) weight ratio is in beaker, additional NMP mixed solutions, the addition of NMP be graphite,
The 10%~20% of conductive agent and binder gross mass；Beaker is put into high speed dispersor, with turning for 1500~2000r/min
Fast 5~10min of high speed rotation；The mixed solution of mixing is uniformly coated on copper foil with automatic coating machine；The copper foil that will be coated
It is put into baking oven, 60~80min is toasted at a temperature of 80~100 DEG C；Pole piece electricity consumption transmission roller press after drying is subjected to roll-in,
Roll-in to compacted density is 1.45-1.65g/cm3；The good pole piece of roll-in is obtained a diameter of 12~14mm's with punching machine punch
Graphite pole piece.
Further, the conductive agent is SP；The binder is the nmp solution of PVDF, mass fraction 5%.
Further, in the step (1)：Metatitanic acid pole piece is dried in vacuo 8h~48h, graphite pole at 80~100 DEG C
Piece is in 110~130 DEG C of vacuum 8h~48h.
Further, in the step (1)：The graphite pole piece capacity is 1~2 times of metatitanic acid pole piece capacity；It is described
Metal lithium sheet is smooth by polishing rod polishing surface, and non-oxidation layer.
Further, in the step (2) button full battery one preparation process：Negative electrode casing is placed in glove box and is put down
On platform, stainless steel gasket is then placed in negative electrode casing, metal lithium sheet is placed in stainless steel gasket, is added dropwise in metal lithium sheet
Then electrolyte places diaphragm on metal lithium sheet electrolyte, and ensure that position fully soaks among diaphragm, is added dropwise on diaphragm
Electrolyte places graphite pole piece on the electrolyte on diaphragm, stainless steel gasket is placed on graphite pole piece, finally puts anode
Shell is sealed to obtain button full battery one with electronic sealing machine.
Further, in the step (4) button full battery two preparation process：Button full battery one is dismantled, glue is used
Head tweezers take out graphite pole piece as lithium intercalated graphite pole piece；Negative electrode casing is placed in glove box on platform, then in negative electrode casing
Middle placement stainless steel gasket places lithium intercalated graphite pole piece in stainless steel gasket, electrolyte is added dropwise in lithium intercalated graphite pole piece, then
Diaphragm is placed on lithium intercalated graphite pole piece electrolyte, and ensures that position fully soaks among diaphragm, is added dropwise electrolyte on diaphragm,
Metatitanic acid pole piece is placed on electrolyte on diaphragm, stainless steel gasket is placed in metatitanic acid pole piece, finally puts anode cover, is used
Electronic sealing machine is sealed to obtain button full battery two.
Further, in the glove box water and oxygen content≤0.1ppm.
Another object of the present invention is to provide the button full batteries that a kind of above-mentioned metatitanic acid pole piece and graphite pole piece form
Preparation method made from button full battery.
The beneficial effects of the invention are as follows：First button full battery is made in graphite pole piece and metal lithium sheet by the present invention, and with
Graphite pole piece is cathode, is anode with metal lithium sheet, then carries out discharge treatment to the button full battery so that metal lithium sheet carries
Lithium intercalated graphite pole piece is obtained for lithium ion, while by lithium ion insertion graphite pole piece；Then by lithium intercalated graphite pole piece and lithium titanate
Button full battery is made in pole piece, and lithium intercalated graphite pole piece provides lithium ion for metatitanic acid pole piece, to obtain obtaining with metatitanic acid
Button full battery of the pole piece as anode pole piece, using graphite pole piece as cathode pole piece, and the safety of button full battery is steady
It is qualitative it is good, rapid charging performance is excellent, have extended cycle life, high temperature resistance is good.
Specific implementation mode
Firstly, it is necessary to explanation, will illustrate the features and advantages of the invention etc. by way of example below, however
What all descriptions were intended merely to illustrate, and should not be construed as forming any restrictions to the present invention.
To avoid repeating, first by involved in embodiment related raw material technical parameter or production method be described collectively, implement
It is repeated no more in example：
The conductive agent is SP；The binder is the nmp solution of PVDF, mass fraction 5%.
The graphite pole piece capacity is 1~2 times of metatitanic acid pole piece capacity；The metal lithium sheet is polished surface by polishing rod
It is smooth, and non-oxidation layer.
Content≤0.1ppm of water and oxygen in the glove box.
The embodiment just provided below by this is come the button to metatitanic acid pole piece of the present invention and graphite pole piece composition
Formula full battery and preparation method thereof illustrates.
Embodiment 1
The preparation method of button full battery described in the present embodiment includes the following steps：
It is prepared by metatitanic acid pole piece：Lithium titanate, conductive agent, binder solution are pressed 80:10:Beaker is added in 10 weight ratio
In, additional NMP obtains 5g mixed solutions, the addition of NMP be lithium titanate, conductive agent and binder gross mass 5%~10%；
Beaker is put into high speed dispersor, with the rotating speed high speed rotation 8min of 2000r/min；The mixed solution of mixing is applied with automatic
Cloth machine is uniformly coated on copper foil；The copper foil coated is put into baking oven, 60min is toasted at a temperature of 90 DEG C；After drying
Pole piece electricity consumption transmission roller press carries out roll-in, and roll-in to compacted density is 1.1g/cm3；By the good pole piece punching machine punch of roll-in
The metatitanic acid pole piece of a diameter of 10mm is obtained, metatitanic acid pole piece is dried in vacuo for 24 hours at 80 DEG C.
It is prepared by graphite pole piece：Graphite, conductive agent, binder are pressed 93:2:In beaker, additional NMP is obtained 5 weight ratio
5g mixed solutions, the addition of NMP be graphite, conductive agent and binder gross mass 15%；Beaker is put into high speed dispersor
In, with the rotating speed high speed rotation 10min of 2000r/min；The mixed solution of mixing is uniformly coated in copper foil with automatic coating machine
On；The copper foil coated is put into baking oven, 60min is toasted at a temperature of 90 DEG C；By the pole piece electricity consumption transmission roller press after drying into
Row roll-in, roll-in to compacted density are 1.53g/cm3；The good pole piece of roll-in is obtained into the stone of a diameter of 12mm with punching machine punch
Graphite pole piece is dried in vacuo for 24 hours by black pole piece at 120 DEG C.
Negative electrode casing is placed in glove box on platform, stainless steel gasket is then placed in negative electrode casing, in stainless steel pad
On piece places metal lithium sheet, and electrolyte is added dropwise in metal lithium sheet, diaphragm is then placed on metal lithium sheet electrolyte, and ensure
Position fully soaks among diaphragm, and electrolyte is added dropwise on diaphragm, graphite pole piece is placed on the electrolyte on diaphragm, in graphite
Stainless steel gasket is placed on pole piece, finally puts anode cover, is sealed to obtain button full battery one with electronic sealing machine, then will
Button full battery one is placed in test cabinet, with test software discharge treatment 12h.
Button full battery one is dismantled, rubber head tweezers is used to take out graphite pole piece as lithium intercalated graphite pole piece；Negative electrode casing is put
It sets in glove box on platform, stainless steel gasket is then placed in negative electrode casing, lithium intercalated graphite pole is placed in stainless steel gasket
Piece is added dropwise electrolyte in lithium intercalated graphite pole piece, then places diaphragm on lithium intercalated graphite pole piece electrolyte, and ensure among diaphragm
Position fully soaks, and electrolyte is added dropwise on diaphragm, metatitanic acid pole piece is placed on the electrolyte on diaphragm, in metatitanic acid pole piece
Upper placement stainless steel gasket, finally puts anode cover, is carried out sealing to obtain button full battery two, button full battery two with electronic sealing machine
It stands 2h and obtains button full battery finished product.
Constant current charge-discharge test carried out to obtained button full battery finished product, 0.5C discharge capacities 148.3mAh/g, 1C are put
Capacitance 144.7mAh/g, 3C discharge capacity 140.1mAh/g, battery high rate performance are good.
Embodiment 2
The preparation method of button full battery described in the present embodiment includes the following steps：
It is prepared by metatitanic acid pole piece：Lithium titanate, conductive agent, binder solution are pressed 83:7:10 weight ratio are added in beaker,
Additional NMP obtains 6g mixed solutions, the addition of NMP be lithium titanate, conductive agent and binder gross mass 10%；Beaker is put
Enter in high speed dispersor, with the rotating speed high speed rotation 10min of 2000r/min；The mixed solution automatic coating machine of mixing is equal
Even is coated on copper foil；The copper foil coated is put into baking oven, 70min is toasted at a temperature of 100 DEG C；Pole piece after drying is used
Electronic roll squeezer carries out roll-in, and roll-in to compacted density is 1.2g/cm3；The good pole piece of roll-in is obtained directly with punching machine punch
Diameter is the metatitanic acid pole piece of 11mm, and metatitanic acid pole piece is dried in vacuo 36h at 100 DEG C.
It is prepared by graphite pole piece：Graphite, conductive agent, binder are pressed 95:2:In beaker, additional NMP is obtained 3 weight ratio
6g mixed solutions, the addition of NMP be graphite, conductive agent and binder gross mass 18%；Beaker is put into high speed dispersor
In, with the rotating speed high speed rotation 10min of 2000r/min；The mixed solution of mixing is uniformly coated in copper foil with automatic coating machine
On；The copper foil coated is put into baking oven, 80min is toasted at a temperature of 90 DEG C；By the pole piece electricity consumption transmission roller press after drying into
Row roll-in, roll-in to compacted density are 1.65g/cm3；The good pole piece of roll-in is obtained into the stone of a diameter of 13mm with punching machine punch
Graphite pole piece is dried in vacuo 36h at 130 DEG C by black pole piece.
Negative electrode casing is placed in glove box on platform, stainless steel gasket is then placed in negative electrode casing, in stainless steel pad
On piece places metal lithium sheet, and electrolyte is added dropwise in metal lithium sheet, diaphragm is then placed on metal lithium sheet electrolyte, and ensure
Position fully soaks among diaphragm, and electrolyte is added dropwise on diaphragm, graphite pole piece is placed on the electrolyte on diaphragm, in graphite
Stainless steel gasket is placed on pole piece, finally puts anode cover, is sealed to obtain button full battery one with electronic sealing machine, then will
Button full battery one is placed in test cabinet, with test software discharge treatment 14h.
Button full battery one is dismantled, rubber head tweezers is used to take out graphite pole piece as lithium intercalated graphite pole piece；Negative electrode casing is put
It sets in glove box on platform, stainless steel gasket is then placed in negative electrode casing, lithium intercalated graphite pole is placed in stainless steel gasket
Piece is added dropwise electrolyte in lithium intercalated graphite pole piece, then places diaphragm on lithium intercalated graphite pole piece electrolyte, and ensure among diaphragm
Position fully soaks, and electrolyte is added dropwise on diaphragm, metatitanic acid pole piece is placed on the electrolyte on diaphragm, in metatitanic acid pole piece
Upper placement stainless steel gasket, finally puts anode cover, is sealed to obtain button full battery two with electronic sealing machine, and button is entirely electric
Pond two stands and obtains button full battery finished product for 24 hours.
Constant current charge-discharge test carried out to obtained button full battery finished product, 0.5C discharge capacities 149.2mAh/g, 1C are put
Capacitance 145.2mAh/g, 3C discharge capacity 140.8mAh/g, battery high rate performance are good.
Embodiment 3
The preparation method of button full battery described in the present embodiment includes the following steps：
It is prepared by metatitanic acid pole piece：Lithium titanate, conductive agent, binder solution are pressed 82:8:Beaker is added in 10 weight ratio
In, additional NMP obtains 5g mixed solutions, the addition of NMP be lithium titanate, conductive agent and binder gross mass 8%；By beaker
It is put into high speed dispersor, with the rotating speed high speed rotation 10min of 1500r/min；By the mixed solution automatic coating machine of mixing
Uniformly it is coated on copper foil；The copper foil coated is put into baking oven, 80min is toasted at a temperature of 80 DEG C；By the pole piece after drying
Electricity consumption transmission roller press carries out roll-in, and roll-in to compacted density is 1.3g/cm3；The good pole piece of roll-in is obtained with punching machine punch
Metatitanic acid pole piece is dried in vacuo 48h by the metatitanic acid pole piece of a diameter of 12mm at 100 DEG C.
It is prepared by graphite pole piece：Graphite, conductive agent, binder are pressed 92:1.5:6.5 weight ratio are in beaker, additional NMP
Obtain 5g mixed solutions, the addition of NMP be graphite, conductive agent and binder gross mass 18%；Beaker is put into high speed point
It dissipates in machine, with the rotating speed high speed rotation 10min of 1500r/min；The mixed solution of mixing is uniformly coated in automatic coating machine
On copper foil；The copper foil coated is put into baking oven, 80min is toasted at a temperature of 100 DEG C；By the electronic roll-in of the pole piece after drying
Machine carries out roll-in, and roll-in to compacted density is 1.65g/cm3；The good pole piece of roll-in is obtained into a diameter of 14mm with punching machine punch
Graphite pole piece, graphite pole piece is dried in vacuo 48h at 130 DEG C.
Negative electrode casing is placed in glove box on platform, stainless steel gasket is then placed in negative electrode casing, in stainless steel pad
On piece places metal lithium sheet, and electrolyte is added dropwise in metal lithium sheet, diaphragm is then placed on metal lithium sheet electrolyte, and ensure
Position fully soaks among diaphragm, and electrolyte is added dropwise on diaphragm, graphite pole piece is placed on the electrolyte on diaphragm, in graphite
Stainless steel gasket is placed on pole piece, finally puts anode cover, is sealed to obtain button full battery one with electronic sealing machine, then will
Button full battery one is placed in test cabinet, with test software discharge treatment 14h.
Button full battery one is dismantled, rubber head tweezers is used to take out graphite pole piece as lithium intercalated graphite pole piece；Negative electrode casing is put
It sets in glove box on platform, stainless steel gasket is then placed in negative electrode casing, lithium intercalated graphite pole is placed in stainless steel gasket
Piece is added dropwise electrolyte in lithium intercalated graphite pole piece, then places diaphragm on lithium intercalated graphite pole piece electrolyte, and ensure among diaphragm
Position fully soaks, and electrolyte is added dropwise on diaphragm, metatitanic acid pole piece is placed on the electrolyte on diaphragm, in metatitanic acid pole piece
Upper placement stainless steel gasket, finally puts anode cover, is sealed to obtain button full battery two with electronic sealing machine, and button is entirely electric
Pond two stands and obtains button full battery finished product for 24 hours.
Constant current charge-discharge test carried out to obtained button full battery finished product, 0.5C discharge capacities 150.1mAh/g, 1C are put
Capacitance 145.8mAh/g, 3C discharge capacity 142.0mAh/g, battery high rate performance are good.
Claims (10)
1. the preparation method of a kind of metatitanic acid pole piece and the button full battery of graphite pole piece composition, it is characterised in that：
(1) metatitanic acid pole piece and graphite pole piece, are then dried in vacuo by the metatitanic acid pole piece and graphite pole piece prepared, prepare
Metal lithium sheet；
(2) using graphite pole piece as anode pole piece, metal lithium sheet is assembled into button full battery as cathode pole piece in glove box
One, then button full battery one is placed in test cabinet, with 12~14h of test software discharge treatment；
(3) the button full battery one after discharge treatment is put into glove box, dismantles button full battery one and obtains lithium intercalated graphite pole piece,
Then using lithium intercalated graphite pole piece as cathode pole piece, using metatitanic acid pole piece as anode pole piece, button is assembled into glove box
Full battery two.
(4) button full battery two is stood into 2h~obtain button full battery finished product for 24 hours.
2. the preparation method of metatitanic acid pole piece according to claim 1 and the button full battery of graphite pole piece composition, special
Sign is, the preparation process of metatitanic acid pole piece in the step (1)：By lithium titanate, conductive agent, binder solution by (80~
83):(8~10):(7~12) weight ratio is added in beaker, and additional NMP obtains mixed solution, and the addition of NMP is metatitanic acid
The 5%~10% of lithium, conductive agent and binder gross mass；Beaker is put into high speed dispersor, with 1500~2000r/min's
5~10min of rotating speed high speed rotation；The mixed solution of mixing is uniformly coated on copper foil with automatic coating machine；The copper that will be coated
Foil is put into baking oven, and 60~80min is toasted at a temperature of 80~100 DEG C；Pole piece electricity consumption transmission roller press after drying is subjected to roller
Pressure, roll-in to compacted density are 1.1~1.3g/cm3；The good pole piece of roll-in is obtained into a diameter of 10~12mm with punching machine punch
Metatitanic acid pole piece.
3. the preparation method of metatitanic acid pole piece according to claim 1 and the button full battery of graphite pole piece composition, special
Sign is, the preparation process of graphite pole piece in the step (1)：Graphite, conductive agent, binder are pressed into (92~95):(1.5~
2.5):(2.5~6.5) weight ratio is in beaker, additional NMP mixed solutions, and the addition of NMP is graphite, conductive agent and glues
Tie the 10%~20% of agent gross mass；Beaker is put into high speed dispersor, with the rotating speed high speed rotation of 1500~2000r/min
5~10min；The mixed solution of mixing is uniformly coated on copper foil with automatic coating machine；The copper foil coated is put into baking oven,
60~80min is toasted at a temperature of 80~100 DEG C；Pole piece electricity consumption transmission roller press after drying is subjected to roll-in, roll-in to compacting
Density is 1.45-1.65g/cm3；The good pole piece of roll-in is obtained into the graphite pole piece of a diameter of 12~14mm with punching machine punch.
4. the preparation method of the button full battery of metatitanic acid pole piece and graphite pole piece composition according to claim 2 and 3,
It is characterized in that：The conductive agent is SP；The binder is the nmp solution of PVDF, mass fraction 5%.
5. the preparation method of metatitanic acid pole piece according to claim 1 and the button full battery of graphite pole piece composition, special
Sign is, in the step (1)：Metatitanic acid pole piece is dried in vacuo 8h~48h at 80~100 DEG C, graphite pole piece 110~
130 DEG C of vacuum 8h~48h.
6. the preparation method of metatitanic acid pole piece according to claim 1 and the button full battery of graphite pole piece composition, special
Sign is, in the step (1)：The graphite pole piece capacity is 1~2 times of metatitanic acid pole piece capacity；The metal lithium sheet by
Polishing rod polishing surface is smooth, and non-oxidation layer.
7. the preparation method of metatitanic acid pole piece according to claim 1 and the button full battery of graphite pole piece composition, special
Sign is, the preparation process of step (2) the button full battery one：Negative electrode casing is placed in glove box on platform, is then existed
Stainless steel gasket is placed in negative electrode casing, metal lithium sheet is placed in stainless steel gasket, electrolyte is added dropwise in metal lithium sheet, then
Place diaphragm on metal lithium sheet electrolyte, and ensure that position fully soaks among diaphragm, electrolyte is added dropwise on diaphragm, every
Graphite pole piece is placed on electrolyte on film, stainless steel gasket is placed on graphite pole piece, finally puts anode cover, with electronic sealing
Machine is sealed to obtain button full battery one.
8. the preparation method of metatitanic acid pole piece according to claim 1 and the button full battery of graphite pole piece composition, special
Sign is, the preparation process of step (4) the button full battery two：Button full battery one is dismantled, stone is taken out with rubber head tweezers
Black pole piece is as lithium intercalated graphite pole piece；Negative electrode casing is placed in glove box on platform, stainless steel is then placed in negative electrode casing
Gasket places lithium intercalated graphite pole piece in stainless steel gasket, electrolyte is added dropwise in lithium intercalated graphite pole piece, then in lithium intercalated graphite pole
Diaphragm is placed on piece electrolyte, and ensures that position fully soaks among diaphragm, is added dropwise electrolyte, the electricity on diaphragm on diaphragm
Solve liquid on place metatitanic acid pole piece, stainless steel gasket is placed in metatitanic acid pole piece, finally puts anode cover, with electronic sealing machine into
Row sealing obtains button full battery two.
9. the preparation method of the button full battery of metatitanic acid pole piece and graphite pole piece composition according to claim 1,8 and 9,
It is characterized in that：Content≤0.1ppm of water and oxygen in the glove box.
10. a kind of preparation method of the button full battery of metatitanic acid pole piece and graphite pole piece composition as described in claim 1~9
Button full battery obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810878961.0A CN108807845B (en) | 2018-08-03 | 2018-08-03 | Button type full cell composed of lithium titanate pole piece and graphite pole piece and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810878961.0A CN108807845B (en) | 2018-08-03 | 2018-08-03 | Button type full cell composed of lithium titanate pole piece and graphite pole piece and preparation method thereof |
Publications (2)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110797582A (en) * | 2019-09-27 | 2020-02-14 | 双登集团股份有限公司 | Preparation method of novel lithium titanate positive electrode battery |
| CN114361378A (en) * | 2021-12-14 | 2022-04-15 | 宁德厦钨新能源材料有限公司 | Electrochemical performance detection method of ternary material |
| CN114613614A (en) * | 2022-04-11 | 2022-06-10 | 浙江浙能技术研究院有限公司 | All-solid-state lithium ion capacitor and preparation method thereof |
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| CN105845894A (en) * | 2016-05-04 | 2016-08-10 | 合肥国轩高科动力能源有限公司 | Pre-lithiation method and device for negative pole pieces of lithium-ion battery |
| CN106532107A (en) * | 2016-12-21 | 2017-03-22 | 上海杉杉科技有限公司 | Lithium-ion button-type total battery used in experiments and manufacturing method thereof |
| CN207651591U (en) * | 2018-01-15 | 2018-07-24 | 张汉军 | A kind of low pressure lithium ion battery |
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| CN104538194A (en) * | 2014-12-18 | 2015-04-22 | 天津大学 | Preparation method of lithium ion capacitor (LIC) adopting pre-lithiation hard carbon negative electrode |
| CN105845894A (en) * | 2016-05-04 | 2016-08-10 | 合肥国轩高科动力能源有限公司 | Pre-lithiation method and device for negative pole pieces of lithium-ion battery |
| CN106532107A (en) * | 2016-12-21 | 2017-03-22 | 上海杉杉科技有限公司 | Lithium-ion button-type total battery used in experiments and manufacturing method thereof |
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| CN110797582A (en) * | 2019-09-27 | 2020-02-14 | 双登集团股份有限公司 | Preparation method of novel lithium titanate positive electrode battery |
| CN114361378A (en) * | 2021-12-14 | 2022-04-15 | 宁德厦钨新能源材料有限公司 | Electrochemical performance detection method of ternary material |
| CN114361378B (en) * | 2021-12-14 | 2024-03-29 | 宁德厦钨新能源材料有限公司 | Electrochemical performance detection method for ternary material |
| CN114613614A (en) * | 2022-04-11 | 2022-06-10 | 浙江浙能技术研究院有限公司 | All-solid-state lithium ion capacitor and preparation method thereof |
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