CN102299367A - Lithium titanate-lithium nickel cobalt manganate lithium ion battery and preparation method thereof - Google Patents
Lithium titanate-lithium nickel cobalt manganate lithium ion battery and preparation method thereof Download PDFInfo
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- CN102299367A CN102299367A CN2011102177286A CN201110217728A CN102299367A CN 102299367 A CN102299367 A CN 102299367A CN 2011102177286 A CN2011102177286 A CN 2011102177286A CN 201110217728 A CN201110217728 A CN 201110217728A CN 102299367 A CN102299367 A CN 102299367A
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- lithium
- ion battery
- lithium ion
- nickle cobalt
- lithium titanate
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 39
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 229910017052 cobalt Inorganic materials 0.000 title abstract 2
- 239000010941 cobalt Substances 0.000 title abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 239000006258 conductive agent Substances 0.000 claims abstract description 13
- OVAQODDUFGFVPR-UHFFFAOYSA-N lithium cobalt(2+) dioxido(dioxo)manganese Chemical compound [Li+].[Mn](=O)(=O)([O-])[O-].[Co+2] OVAQODDUFGFVPR-UHFFFAOYSA-N 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 15
- 239000005030 aluminium foil Substances 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 12
- 238000004513 sizing Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 5
- 239000002041 carbon nanotube Substances 0.000 claims description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000002904 solvent Substances 0.000 abstract description 8
- 239000010405 anode material Substances 0.000 abstract description 2
- 239000010406 cathode material Substances 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 abstract 2
- 229910002986 Li4Ti5O12 Inorganic materials 0.000 abstract 1
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 210000004027 cell Anatomy 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910013870 LiPF 6 Inorganic materials 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- ZPOLNCDBPYJDSE-UHFFFAOYSA-N 3-[4-[bis(2-chloroethyl)amino]phenyl]-2-formamidopropanoic acid Chemical compound O=CNC(C(=O)O)CC1=CC=C(N(CCCl)CCCl)C=C1 ZPOLNCDBPYJDSE-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000004040 pyrrolidinones Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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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 lithium titanate-lithium nickel cobalt manganate lithium ion battery. The anode material comprises 85-95 wt% of lithium nickel cobalt manganate, 1-10 wt% of water-based adhesive, and 3-10 wt% of conductive agent, and cathode material comprises 85-95 wt% of lithium titanate (Li4Ti5O12), 1-10 wt% of water-based adhesive, and 2-10 wt% of conductive agent. The lithium ion battery disclosed in the invention has a large capacity, excellent discharge rate, long circle life, high stability and safety performance, and can be applied in the field of hybrid electric vehicles, large energy storage system, home energy storage power station, soldier article with high performance requirement and the like. The invention also discloses a preparation method of the lithium ion battery, adopting water as the solvent, having the advantages of low cost, simple process, and no pollution. The method can be widely used.
Description
Technical field
The present invention relates to a kind of lithium-ion-power cell and preparation method thereof, be specifically related to a kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery and preparation method thereof.
Background technology
Lithium titanate anode material is a kind of novel ion secondary battery cathode material lithium.Embed or deviate from the process at lithium ion, crystal formation does not change, and therefore change in volume is called as " zero strain material " less than 1%, thereby can avoid in the charge and discharge cycles owing to the flexible back and forth of electrode material causes structural damage, the cycle performance and the useful life of improving electrode.Under 25 ℃, Li
4Ti
5O
12The chemical diffusion coefficient be 2 * 10
-8Cm
2/ s, far above carbon negative pole material, high diffusion coefficient makes that this negative material can fast charging and discharging.The lithium titanate material electromotive force is difficult for producing the lithium dendrite arm than the height of pure metal lithium, for the safety that ensures lithium battery provides the foundation, is considered to thoroughly to solve the fail safe of lithium battery.
But the relative current potential of lithium titanate (Vs.Li) 1.5v far above the relative current potential 0.1v of carbon negative pole, therefore will select the higher material of current potential as the anodal operating voltage that could improve battery, thereby improve the battery specific energy.The relative current potential of nickle cobalt lithium manganate is higher, good cycle, and the gram volume height is one of desirable positive electrode.
The powder of lithium titanate and nickle cobalt lithium manganate is thinner, and specific area is bigger, very easily suction, and the comparison difficulty that dewaters, therefore the batching that is main raw material(s) with these two kinds of materials is closed slurry and is all used NMP(n-formyl sarcolysine base pyrrolidones) as solvent.Adhesive then uses Kynoar (PVDF).The glue that raw material, conductive agent etc. and above-mentioned adhesive and solvent is good mixes by a certain percentage, after the process high-speed stirred is prepared into slurry, is applied to equably on the aluminium foil at painting process, through oven dry, rolls, cuts into electrode plates then.
NMP is organic solvent, and is volatile, and distributing has strong penetrating odor in air, and contaminated environment has certain adverse effect to people's health, must be reclaimed.The purchase of retracting device, installation have increased the cost that battery is made.And 95 ℃ of NMP flash-points, explosion limit 1.3%-9.5% must distribute in coater oven, air channel in time, otherwise security incident such as can blast, catch fire.NMP is an organic solvent, has certain corrosivity.And NMP-PVDF solution in manufacturing process, absorb water can influence the adhesiveness of PVDF, in the electrode manufacturing, need strictly to control moisture, thus the manufacture difficulty and the cost of increase.
Thereby, in the development process of lithium-ion-power cell, select a kind of suitable aqueous binder, use water as solvent, and dewater by special process strictness in preparation process, for solving the problems of the technologies described above, have great importance.
Summary of the invention
The object of the present invention is to provide a kind of negative pole is that primary raw material, positive pole are lithium-ion-power cell water prescription system of main raw material(s) and preparation method thereof with the nickle cobalt lithium manganate with the lithium titanate.The lithium-ion-power cell capacity for preparing with this prescription and preparation method is big, and rate charge-discharge is good, has extended cycle life stability and safety performance height, energy-conserving and environment-protective.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery, its positive electrode is made up of the nickle cobalt lithium manganate of 85 ~ 95% weight, the adhesive of 1 ~ 10% weight, the conductive agent of 3 ~ 10% weight; Its negative material is by the lithium titanate (Li of 85 ~ 95% weight
4Ti
5O
12), the conductive agent of the adhesive of 1 ~ 10% weight, 2 ~ 10% weight forms; Described adhesive is an aqueous binder.
Preferably, described aqueous binder is a polyether compound.
Preferably, described aqueous binder is at least a among 103 glue, 103A glue, 105 glue, the LA132.
Preferably, described conductive agent is at least a in SP, superconduction carbon black, electrically conductive graphite, the carbon nano-tube.
The preparation method of above-mentioned a kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery comprises the steps:
1) making of positive plate: press formula ratio and add positive electrode, be dissolved in water, stir, anode sizing agent, anode sizing agent is coated on the aluminium foil, under vacuum environment, 80-120 ℃ of baking be after 5-12 hour, roll-in, cuts into positive plate;
2) making of negative plate: press formula ratio and add negative material, be dissolved in water, stir, cathode size, cathode size is coated on the aluminium foil, under vacuum environment, 80-120 ℃ of baking be after 5-12 hour, roll-in, cuts into negative plate;
3) respectively with positive plate, negative plate under vacuum environment, 60 ~ 120 ℃ the baking 24 ~ 48 hours after, positive plate, barrier film, negative plate are laminated into electric core together, insert in the battery container, become the semi-finished product battery;
4) with the semi-finished product battery under vacuum environment, 60 ~ 100 ℃ the baking 48 ~ 96 hours after, fluid injection, change into, partial volume, obtain a kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery.
Preferably, the vacuum pressure of described vacuum environment is-0.08 ~-0.10 MPa.
The present invention has following beneficial effect:
(1) lithium ion power cell cathode of the present invention with the lithium titanate be primary raw material, anodal be main raw material(s) with the nickle cobalt lithium manganate, improved the charge-discharge performance of battery greatly, capacity is big, have extended cycle life stability and safety;
(2) the used adhesive of lithium-ion-power cell of the present invention is an aqueous binder, thereby can make water as solvent, and the processing cost of water is low, to zero environmental, greatly reduces the manufacture difficulty and the cost of battery, environmental protection and energy saving;
(3) preparation method of the present invention is by special baking process, and strictness dewaters, and has guaranteed the quality of battery;
(4) low, simple for process, the non-environmental-pollution of preparation method's cost of the present invention can be applicable on a large scale.
Description of drawings
Fig. 1 is the charge graph of the lithium-ion-power cell of the embodiment of the invention 1;
Fig. 2 is the discharge curve of the lithium-ion-power cell of the embodiment of the invention 1;
Fig. 3 is the charge graph of the lithium-ion-power cell of the embodiment of the invention 2;
Fig. 4 is the discharge curve of the lithium-ion-power cell of the embodiment of the invention 2;
Fig. 5 is the charge graph of the lithium-ion-power cell of the embodiment of the invention 3;
Fig. 6 is the discharge curve of the lithium-ion-power cell of the embodiment of the invention 3.
Embodiment
A kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery, its positive electrode is made up of the nickle cobalt lithium manganate of 85 ~ 95% weight, the adhesive of 1 ~ 10% weight, the conductive agent of 3 ~ 10% weight; Its negative material is by the lithium titanate (Li of 85 ~ 95% weight
4Ti
5O
12), the conductive agent of the adhesive of 1 ~ 10% weight, 2 ~ 10% weight forms; Described adhesive is an aqueous binder.
Preferably, described aqueous binder is a polyether compound.
Preferably, described aqueous binder is at least a among 103 glue, 103A glue, 105 glue, the LA132.Certainly, according to those skilled in the art's understanding scope, can also select other polyether compound aqueous binder for use.
Preferably, described conductive agent is at least a in SP, superconduction carbon black, electrically conductive graphite, the carbon nano-tube.Certainly, in those skilled in the art's understanding scope, can also select other conductive agent for use.
The preparation method of above-mentioned a kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery comprises the steps:
1) making of positive plate: press formula ratio and add positive electrode, be dissolved in water, stir, anode sizing agent, anode sizing agent is coated on the aluminium foil, under vacuum environment, 80-120 ℃ of baking be after 5-12 hour, roll-in, cuts into positive plate;
2) making of negative plate: press formula ratio and add negative material, be dissolved in water, stir, cathode size, cathode size is coated on the aluminium foil, under vacuum environment, 80-120 ℃ of baking be after 5-12 hour, roll-in, cuts into negative plate;
3) respectively with positive plate, negative plate under vacuum environment, 60 ~ 120 ℃ the baking 24 ~ 48 hours after, positive plate, barrier film, negative plate are laminated into electric core together, insert in the battery container, become the semi-finished product battery;
4) with the semi-finished product battery under vacuum environment, 60 ~ 100 ℃ the baking 48 ~ 96 hours after, fluid injection, change into, partial volume, obtain a kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery.
Preferably, the vacuum pressure of described vacuum environment is-0.08 ~-0.10 MPa.
The present invention is further illustrated below in conjunction with embodiment, but be not limited thereto.
Embodiment 1
A kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery comprise positive pole, negative pole, barrier film, electrolyte and shell.
Positive electrode is formed: 85% nickle cobalt lithium manganate, 5% 103 glue, 10% SP;
Negative material is formed: 85% lithium titanate, 5% LA132,10% SP;
Barrier film is: the single-layer septum of PP material;
Electrolyte is: 1.0mol/L LiPF
6Solution, solvent composition are EC:DMC:EMC=1:1:1;
Shell is a plastic casing.
Concrete preparation method is as follows:
1) making of positive plate: press formula ratio and add positive electrode, be dissolved in water, even with double star power mixer high-speed stirred, eliminate bubble, iron filings, anode sizing agent, anode sizing agent is uniformly coated on the aluminium foil through automatical feeding system, coating machine, under-0.09MPa, 100 ℃ of bakings roll-in, cut into positive plate after 10 hours;
2) making of negative plate: press formula ratio and add negative material, be dissolved in water, even with double star power mixer high-speed stirred, eliminate bubble, iron filings, cathode size, cathode size is uniformly coated on the aluminium foil through automatical feeding system, coating machine, under-0.09MPa, 100 ℃ of bakings roll-in, cut into negative plate after 10 hours;
3) respectively the 100 ℃ of bakings under-0.09MPa of positive plate, negative plate are laminated into electric core together with positive plate, barrier film, negative plate after 36 hours, insert in the plastic casing, become the semi-finished product battery;
4) with the semi-finished product battery in 80 ℃ of bakings under the-0.08MPa after 72 hours, fluid injection, change into, partial volume becomes the 150Ah battery.The charging and discharging curve of gained battery as shown in Figure 1 and Figure 2.
A kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery comprise positive pole, negative pole, barrier film, electrolyte and shell.
Positive electrode is formed: 90% nickle cobalt lithium manganate, 7% 103A glue, 3% superconduction carbon black;
Negative material is formed: 85% lithium titanate, 10% LA132,5% superconduction carbon black;
Barrier film is: the single-layer septum of PP material;
Electrolyte is: 1.0mol/L LiPF
6Solution, solvent composition are EC:DMC:EMC=1:1:1;
Shell is a plastic casing.
Concrete preparation method is as follows:
1) making of positive plate: press formula ratio and add positive electrode, be dissolved in water, even with double star power mixer high-speed stirred, eliminate bubble, iron filings, anode sizing agent, anode sizing agent is uniformly coated on the aluminium foil through automatical feeding system, coating machine, under-0.09MPa, 80 ℃ of bakings roll-in, cut into positive plate after 12 hours;
2) making of negative plate: press formula ratio and add negative material, be dissolved in water, even with double star power mixer high-speed stirred, eliminate bubble, iron filings, cathode size, cathode size is uniformly coated on the aluminium foil through automatical feeding system, coating machine, under-0.09MPa, 80 ℃ of bakings roll-in, cut into negative plate after 12 hours;
3) respectively the 80 ℃ of bakings under-0.08MPa of positive plate, negative plate are laminated into electric core together with positive plate, barrier film, negative plate after 48 hours, insert in the plastic casing, become the semi-finished product battery;
4) with the semi-finished product battery in 100 ℃ of bakings under the-0.08MPa after 48 hours, fluid injection, change into, partial volume becomes the 150Ah battery.The battery charging and discharging curve as shown in Figure 3, Figure 4.
Embodiment 3
A kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery comprise positive pole, negative pole, barrier film, electrolyte and shell.
Positive electrode is formed: 95% nickle cobalt lithium manganate, 1% 103 glue, 103A glue mixture, 4% carbon nano-tube;
Negative material is formed: 95% lithium titanate, 1% 103 glue, 4% carbon nano-tube;
Barrier film is: the single-layer septum of PP material;
Electrolyte is: 1.0mol/L LiPF
6Solution, solvent composition are EC:DMC:EMC=1:1:1;
Shell is a plastic casing.
Concrete preparation method is as follows:
1) making of positive plate: press formula ratio and add positive electrode, be dissolved in water, even with double star power mixer high-speed stirred, eliminate bubble, iron filings, anode sizing agent, anode sizing agent is uniformly coated on the aluminium foil through automatical feeding system, coating machine, under-0.08MPa, 120 ℃ of bakings roll-in, cut into positive plate after 8 hours;
2) making of negative plate: press formula ratio and add negative material, be dissolved in water, even with double star power mixer high-speed stirred, eliminate bubble, iron filings, cathode size, cathode size is uniformly coated on the aluminium foil through automatical feeding system, coating machine, under-0.08MPa, 120 ℃ of bakings roll-in, cut into negative plate after 8 hours;
3) respectively positive plate, negative plate together are laminated into electric core with positive plate, barrier film, negative plate in 60 ℃ of bakings under vacuum-0.10MPa after 48 hours, insert in the plastic casing, become the semi-finished product battery;
4) with the semi-finished product battery in 60 ℃ of bakings under vacuum-0.10MPa after 72 hours, fluid injection, change into, partial volume becomes the 150Ah battery.Battery charging and discharging curve such as Fig. 5, shown in Figure 6.
Claims (6)
1. lithium titanate and nickle cobalt lithium manganate system lithium ion battery, its positive electrode is made up of the nickle cobalt lithium manganate of 85 ~ 95% weight, the adhesive of 1 ~ 10% weight, the conductive agent of 3 ~ 10% weight; Its negative material is by the lithium titanate (Li of 85 ~ 95% weight
4Ti
5O
12), the conductive agent of the adhesive of 1 ~ 10% weight, 2 ~ 10% weight forms; Described adhesive is an aqueous binder.
2. a kind of lithium titanate according to claim 1 and nickle cobalt lithium manganate system lithium ion battery is characterized in that: described aqueous binder is a polyether compound.
3. a kind of lithium titanate according to claim 2 and nickle cobalt lithium manganate system lithium ion battery is characterized in that: described aqueous binder is at least a among 103 glue, 103A glue, 105 glue, the LA132.
4. a kind of lithium titanate according to claim 1 and nickle cobalt lithium manganate system lithium ion battery is characterized in that: described conductive agent is at least a in SP, superconduction carbon black, electrically conductive graphite, the carbon nano-tube.
5. the preparation method of described a kind of lithium titanate of claim 1 and nickle cobalt lithium manganate system lithium ion battery comprises the steps:
1) making of positive plate: press formula ratio and add positive electrode, be dissolved in water, stir, anode sizing agent, anode sizing agent is coated on the aluminium foil, under vacuum environment, 80-120 ℃ of baking be after 5-12 hour, roll-in, cuts into positive plate;
2) making of negative plate: press formula ratio and add negative material, be dissolved in water, stir, cathode size, cathode size is coated on the aluminium foil, under vacuum environment, 80-120 ℃ of baking be after 5-12 hour, roll-in, cuts into negative plate;
3) respectively with positive plate, negative plate under vacuum environment, 60 ~ 120 ℃ the baking 24 ~ 48 hours after, positive plate, barrier film, negative plate are laminated into electric core together, insert in the battery container, become the semi-finished product battery;
4) with the semi-finished product battery under vacuum environment, 60 ~ 100 ℃ the baking 48 ~ 96 hours after, fluid injection, change into, partial volume, obtain a kind of lithium titanate and nickle cobalt lithium manganate system lithium ion battery.
6. according to the preparation method of described a kind of lithium titanate of claim 5 and nickle cobalt lithium manganate system lithium ion battery, it is characterized in that: the vacuum pressure of described vacuum environment is-0.08 ~-0.10 MPa.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646813A (en) * | 2012-03-28 | 2012-08-22 | 重庆永通信息工程实业有限公司 | Manufacturing method of lithium titanate lithium ion battery |
| CN105322222A (en) * | 2014-07-31 | 2016-02-10 | 株式会社东芝 | Nonaqueous electrolyte battery and battery pack |
| CN105762353A (en) * | 2016-04-08 | 2016-07-13 | 远东福斯特新能源有限公司 | Lithium-ion battery with high-nickel ternary aqueous positive electrode and preparation method thereof |
| CN107910548A (en) * | 2017-05-09 | 2018-04-13 | 云南锡业集团（控股）有限责任公司 | A kind of accumulation energy type lithium titanate lithium ion battery and preparation method thereof |
| CN109378520A (en) * | 2018-11-13 | 2019-02-22 | 上海电气国轩新能源科技有限公司 | A kind of nickle cobalt lithium manganate and lithium titanate system battery and preparation method thereof |
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| CN109378520A (en) * | 2018-11-13 | 2019-02-22 | 上海电气国轩新能源科技有限公司 | A kind of nickle cobalt lithium manganate and lithium titanate system battery and preparation method thereof |
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