CN107742723A - A kind of preparation method of military super-low-temperature lithium-ion cell - Google Patents
A kind of preparation method of military super-low-temperature lithium-ion cell Download PDFInfo
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- CN107742723A CN107742723A CN201710767200.3A CN201710767200A CN107742723A CN 107742723 A CN107742723 A CN 107742723A CN 201710767200 A CN201710767200 A CN 201710767200A CN 107742723 A CN107742723 A CN 107742723A
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- lithium
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- H01M10/052—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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
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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
-
- 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
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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
-
- 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
Abstract
The invention discloses a kind of military super-low-temperature lithium-ion cell preparation method：High power cobalt acid lithium, CNT slurries, carbon black, polyvinylidene fluoride and N-methyl pyrrolidones are mixedly configured into slurry according to a certain percentage, by slurry coated in above aluminium foil, by roll-in, cutting, film-making, complete the making of positive plate；Raw material is mixedly configured into slurry according to a certain percentage, by slurry coated in above copper foil, the making of negative plate is completed by above-mentioned steps；The process before lithium ion battery liquid injection is completed by winding, encapsulation again, a kind of ultralow temperature battery of core note after baking is special to use electrolyte, and then an envelope, ageing, chemical conversion, two envelopes and partial volume, complete the making of capacity type super-low-temperature lithium-ion cell.It is an advantage of the invention that：Battery can be in 40 degree of ultra-low temperature surroundings underneath with the battery capacity that 0.2C is released under 40 degree of environment has reached more than the 80% of 25 degree of capacity released of normal temperature, and ultralow temperature performance is especially excellent.
Description
Technical field
The present invention relates to a kind of preparation method of battery, specially a kind of making side of military super-low-temperature lithium-ion cell
Method.
Background technology
At present, lithium ion battery is due to high with voltage, energy density per unit volume and mass-energy density metric density it is high, it is pollution-free,
The advantages that can recycling, has been widely used for mobile phone, notebook, digital camera, portable power source, tablet personal computer, it is electronic from
The field such as driving and electric automobile, it is the preferred energy supplier of current digital products, while is also that instead of oil and is used in
The new energy scheme of automobile.
But lithium ion battery uses cycle life and security performance there is also the defects of itself under battery high-temperature environment
It is obvious to reduce, discharge capacity of the cell reduction more obvious than normal temperature environment under cryogenic conditions, particularly in ultralow temperature（- 40 degree）Under environment
Not the drawbacks of battery capacity is not put not come out substantially, and battery can not use.
The content of the invention
It is an object of the invention to provide a kind of preparation method of military super-low-temperature lithium-ion cell, this method has reached electricity
The capacity that pond is released under -40 degree environment has reached more than the 80% of 25 degree of capacity released of normal temperature, and cryogenic property is especially excellent
It is different.
The present invention is achieved like this, a kind of preparation method of military super-low-temperature lithium-ion cell, it is characterized in that method
Step is：
（1）High power cobalt acid lithium, CNT slurries, carbon black, polyvinylidene fluoride and N-methyl pyrrolidones are mixed according to a certain percentage
Conjunction is configured to slurry, by slurry coated in above aluminium foil, by roll-in, cutting, film-making, completes the making of positive plate；
（2）Graphite, carbon black, CMC, the rubber of fourth third and pure water are mixedly configured into slurry according to a certain percentage,
By slurry coated in above copper foil, by roll-in, cutting, film-making, the making of negative plate is completed；
（3）Then the process before lithium ion battery liquid injection is completed by winding, encapsulation, the core after baking injects a kind of ultralow temperature
Battery is special to use electrolyte, and then an envelope, ageing, chemical conversion, two envelopes and partial volume, complete the making of super-low-temperature lithium-ion cell.
Step of the present invention（1）The high voltage cobalt acid lithium D10 granularities that middle positive pole uses are in 3.4um;D50 granularities exist
6.1um;For D90 granularities in 10.2um, specific surface area is 0.52m2/g;Tap density 2.38g/cm3.This cobalt acid lithium granularity is small,
Specific surface area is big, and the hole of this cobalt acid lithium surface Lithium-ion embeding is shallow, while hole number is more, therefore lithium ion enters during electric discharge
It is fast to enter the speed of positive pole, is exactly that can support big multiplying power discharging in terms of being embodied in cell discharge performance.
Step of the present invention（1）Middle positive pole with the addition of CNT slurries, and CNT parameters are as follows：Caliber 10-20nm pipe ranges 5-12
μm specific surface area 200-260m2/ g Impurity Fe contents：≤300ppm.This CNT can form good conductive network, hair
Effective electric action is waved, effectively reduces the internal resistance of cell, improves the high-rate discharge ability of battery.
Step of the present invention（1）Middle high power cobalt acid lithium：CNT slurries：Carbon black：The optimal proportion of polyvinylidene fluoride
For：95.9:20：2:2.1.
Step of the present invention（3）A kind of middle ultralow temperature battery is special to use electrolyte, and specific electrolyte solute is hexafluoro phosphorus
Sour lithium, solvent composition are ethylene carbonate, diethyl carbonate and ethyl acrylate, and solvent volume ratio is 3:2:5, wherein propylene
Acetoacetic ester fusing point has reached -72 degree, therefore electrolyte good fluidity under ultra-low temperature surroundings, viscosity are low.
Step of the present invention（3）In an envelope, ageing, chemical conversion, two envelopes and partial volume be specially：Forvacuum oozes electrolyte
Thoroughly fully, then the envelope of vacuum one makes inside battery completely isolated with the external world, and battery standing is melted into for 48 hours, and battery is formed
Even SEI films, battery and then the envelope of vacuum two extract unnecessary gas out, and battery performance is detected by partial volume.
It is an advantage of the invention that：Battery can be used under the ultra-low temperature surroundings of -40 degree, and high power cobalt is used by positive pole
Sour lithium, while the special CNT slurries of low temperature are added, while according to high power cobalt acid lithium：CNT slurries：Carbon black：Gather inclined difluoro second
The optimal proportion of alkene is：95.9:20：2:2.1 complete anode formula, while develop the special lithium ion battery electrolysis of ultralow temperature
Liquid, reach the 80% of 25 degree of capacity released of normal temperature so as to reach the battery capacity that 0.2C is released under -40 degree environment
More than, cryogenic property is especially excellent.
Embodiment
A kind of preparation method of military super-low-temperature lithium-ion cell, it is characterized in that method and step is：
（1）High power cobalt acid lithium, CNT slurries, carbon black, polyvinylidene fluoride and N-methyl pyrrolidones are mixed according to a certain percentage
Conjunction is configured to slurry, by slurry coated in above aluminium foil, by roll-in, cutting, film-making, completes the making of positive plate；
（2）Graphite, carbon black, CMC, the rubber of fourth third and pure water are mixedly configured into slurry according to a certain percentage,
By slurry coated in above copper foil, by roll-in, cutting, film-making, the making of negative plate is completed；
（3）Then the process before lithium ion battery liquid injection is completed by winding, encapsulation, the core after baking injects a kind of ultralow temperature
Battery is special to use electrolyte, and then forvacuum makes electrolyte permeability abundant, and then the envelope of vacuum one makes inside battery complete with the external world
Full isolation, battery standing are melted into for 48 hours, and battery forms uniform SEI films, and it is unnecessary that battery and then the envelope of vacuum two are extracted out
Gas, battery performance is detected by partial volume, thus completes the making of super-low-temperature lithium-ion cell.
Step of the present invention（1）The high voltage cobalt acid lithium D10 granularities that middle positive pole uses are in 3.4um;D50 granularities exist
6.1um;For D90 granularities in 10.2um, specific surface area is 0.52m2/g;Tap density 2.38g/cm3.This cobalt acid lithium granularity is small,
Specific surface area is big, and the hole of this cobalt acid lithium surface Lithium-ion embeding is shallow, while hole number is more, therefore lithium ion enters during electric discharge
It is fast to enter the speed of positive pole, is exactly that can support big multiplying power discharging in terms of being embodied in cell discharge performance.
Step of the present invention（1）Middle positive pole with the addition of CNT slurries, and CNT parameters are as follows：Caliber 10-20nm pipe ranges 5-12
μm specific surface area 200-260m2/ g Impurity Fe contents：≤300ppm.This CNT can form good conductive network, hair
Effective electric action is waved, effectively reduces the internal resistance of cell, improves the high-rate discharge ability of battery.
Step of the present invention（1）Middle high power cobalt acid lithium：CNT slurries：Carbon black：The optimal proportion of polyvinylidene fluoride
For：95.9:20：2:2.1.
Step of the present invention（3）A kind of middle ultralow temperature battery is special to use electrolyte, and specific electrolyte solute is hexafluoro phosphorus
Sour lithium, solvent composition are ethylene carbonate, diethyl carbonate and ethyl acrylate, and solvent volume ratio is 3:2:5, wherein propylene
Acetoacetic ester fusing point has reached -72 degree, therefore electrolyte good fluidity under ultra-low temperature surroundings, viscosity are low.
Claims (6)
- A kind of 1. preparation method of military super-low-temperature lithium-ion cell, it is characterized in that method and step is：（1）High power cobalt acid lithium, CNT slurries, carbon black, polyvinylidene fluoride and N-methyl pyrrolidones are mixed according to a certain percentage Conjunction is configured to slurry, by slurry coated in above aluminium foil, by roll-in, cutting, film-making, completes the making of positive plate；（2）Graphite, carbon black, CMC, the rubber of fourth third and pure water are mixedly configured into slurry according to a certain percentage, By slurry coated in above copper foil, by roll-in, cutting, film-making, the making of negative plate is completed；（3）Then the process before lithium ion battery liquid injection is completed by winding, encapsulation, the core after baking injects a kind of ultralow temperature Battery is special to use electrolyte, and then an envelope, ageing, chemical conversion, two envelopes and partial volume, complete the making of super-low-temperature lithium-ion cell.
- A kind of 2. preparation method of military super-low-temperature lithium-ion cell according to claim 1, it is characterised in that：The step Suddenly（1）The high power cobalt acid lithium D10 granularities that middle positive pole uses are in 3.4um;D50 granularities are in 6.1um;D90 granularities in 10.2um, Specific surface area is 0.52m2/g;Tap density 2.38g/cm3.
- A kind of 3. preparation method of military super-low-temperature lithium-ion cell according to claim 1, it is characterised in that：The step Suddenly（1）Middle positive pole with the addition of CNT slurries, and CNT parameters are as follows：5-12 μm of specific surface area 200- of caliber 10-20nm pipe ranges 260m2/ g Impurity Fe contents：≤300ppm.
- A kind of 4. preparation method of military super-low-temperature lithium-ion cell according to claim 1, it is characterised in that：The step Suddenly（1）Middle high power cobalt acid lithium：CNT slurries：Carbon black：The optimal proportion of polyvinylidene fluoride is：95.9:20：2:2.1.
- A kind of 5. preparation method of military super-low-temperature lithium-ion cell according to claim 1, it is characterised in that：The step Suddenly（3）A kind of middle ultralow temperature battery is special to use electrolyte, and specific electrolyte solute is lithium hexafluoro phosphate, and solvent composition is ethylene Alkene ester, diethyl carbonate and ethyl acrylate, solvent volume ratio are 3:2:5, wherein ethyl acrylate fusing point has reached -72 Degree.
- A kind of 6. preparation method of military super-low-temperature lithium-ion cell according to claim 1, it is characterised in that：One envelope, Ageing, chemical conversion, two envelopes and partial volume are specially：Forvacuum makes electrolyte permeability abundant, then the envelope of vacuum one make inside battery with Extraneous completely isolated, battery standing is melted into for 48 hours, and battery forms uniform SEI films, and battery and then the envelope of vacuum two are extracted out Unnecessary gas, battery performance is detected by partial volume.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598556A (en) * | 2018-05-21 | 2018-09-28 | 重庆市紫建电子有限公司 | A kind of high temperature modification polymer Li-ion battery and preparation method thereof |
| CN109256589A (en) * | 2018-09-20 | 2019-01-22 | 山东天瀚新能源科技有限公司 | A kind of ultralow temperature rate lithium ion battery |
| CN109309233A (en) * | 2018-09-30 | 2019-02-05 | 东莞市三臻科技发展有限公司 | A kind of preparation process of extended-life lithium ion battery |
| CN109360977A (en) * | 2018-12-05 | 2019-02-19 | 江西赛特新能源科技有限公司 | A kind of preparation method of resistance to ultralow temperature cylindrical lithium ion battery |
| CN110890595A (en) * | 2019-11-18 | 2020-03-17 | 淮北市锂动芯新能源科技有限公司 | Preparation method of ultralow-temperature lithium ion battery for electronic cigarette |
| CN113517435A (en) * | 2021-06-07 | 2021-10-19 | 江苏劲鹿新能源科技有限公司 | Low-temperature lithium battery formula and sheet-making process |
| CN113517436A (en) * | 2021-06-07 | 2021-10-19 | 江苏劲鹿新能源科技有限公司 | Continuous-rate lithium battery formula and sheet-making process thereof |
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| CN105703012A (en) * | 2016-01-25 | 2016-06-22 | 张博 | Preparation method of graphene quick rechargeable battery |
| CN106785058A (en) * | 2016-12-07 | 2017-05-31 | 深圳市朗泰沣电子有限公司 | A kind of preparation method of high-energy-density long-life ferric phosphate lithium cell |
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| CN102148405A (en) * | 2011-03-07 | 2011-08-10 | 重庆永通信息工程实业有限公司 | Method for manufacturing low-temperature lithium-ion battery |
| CN105703012A (en) * | 2016-01-25 | 2016-06-22 | 张博 | Preparation method of graphene quick rechargeable battery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598556A (en) * | 2018-05-21 | 2018-09-28 | 重庆市紫建电子有限公司 | A kind of high temperature modification polymer Li-ion battery and preparation method thereof |
| CN108598556B (en) * | 2018-05-21 | 2021-08-06 | 重庆市紫建电子股份有限公司 | High-temperature polymer lithium ion battery and preparation method thereof |
| CN109256589A (en) * | 2018-09-20 | 2019-01-22 | 山东天瀚新能源科技有限公司 | A kind of ultralow temperature rate lithium ion battery |
| CN109309233A (en) * | 2018-09-30 | 2019-02-05 | 东莞市三臻科技发展有限公司 | A kind of preparation process of extended-life lithium ion battery |
| CN109360977A (en) * | 2018-12-05 | 2019-02-19 | 江西赛特新能源科技有限公司 | A kind of preparation method of resistance to ultralow temperature cylindrical lithium ion battery |
| CN110890595A (en) * | 2019-11-18 | 2020-03-17 | 淮北市锂动芯新能源科技有限公司 | Preparation method of ultralow-temperature lithium ion battery for electronic cigarette |
| CN113517435A (en) * | 2021-06-07 | 2021-10-19 | 江苏劲鹿新能源科技有限公司 | Low-temperature lithium battery formula and sheet-making process |
| CN113517436A (en) * | 2021-06-07 | 2021-10-19 | 江苏劲鹿新能源科技有限公司 | Continuous-rate lithium battery formula and sheet-making process thereof |
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Application publication date: 20180227 |