CN103107308A - Cathode sheet and lithium ion power battery and preparation method thereof - Google Patents
Cathode sheet and lithium ion power battery and preparation method thereof Download PDFInfo
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- CN103107308A CN103107308A CN2011103603295A CN201110360329A CN103107308A CN 103107308 A CN103107308 A CN 103107308A CN 2011103603295 A CN2011103603295 A CN 2011103603295A CN 201110360329 A CN201110360329 A CN 201110360329A CN 103107308 A CN103107308 A CN 103107308A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 6
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 46
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 37
- 150000002576 ketones Chemical class 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims description 39
- -1 conductive black Substances 0.000 claims description 37
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 33
- 239000002904 solvent Substances 0.000 claims description 33
- 239000007773 negative electrode material Substances 0.000 claims description 30
- 239000003792 electrolyte Substances 0.000 claims description 23
- 239000012528 membrane Substances 0.000 claims description 23
- 239000002033 PVDF binder Substances 0.000 claims description 22
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000007774 positive electrode material Substances 0.000 claims description 14
- 238000004513 sizing Methods 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 10
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 10
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 claims description 10
- 238000003475 lamination Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 235000015110 jellies Nutrition 0.000 abstract description 6
- 239000008274 jelly Substances 0.000 abstract description 6
- 239000006257 cathode slurry Substances 0.000 abstract description 4
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 15
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 10
- 238000007639 printing Methods 0.000 description 9
- 239000005030 aluminium foil Substances 0.000 description 8
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 5
- 229910013872 LiPF Inorganic materials 0.000 description 5
- 101150058243 Lipf gene Proteins 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 5
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 229910003002 lithium salt Inorganic materials 0.000 description 5
- 159000000002 lithium salts Chemical class 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
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- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a lithium ion power battery and a cathode sheet thereof as well as a preparation method of the lithium ion power battery. A certain proportion of ketone organic solvent is added to cathode slurry, and thus the problem that lithium titanate cathode slurry is in jelly form is effectively solved and the cathode slurry is smoothly coated: 1, the feasibility of coating a lithium titanate cathode sheet is greatly improved; and 2, the coating efficiency of the lithium titanate cathode sheet is greatly improved.
Description
Technical field
The present invention relates to the battery material field, particularly a kind of negative plate and lithium-ion-power cell and preparation method thereof.
Background technology
Lithium titanate battery is had an optimistic view of by industry day by day as a kind of emerging automobile power cell and energy-storage battery, and vast potential for future development is arranged.It is good that lithium titanate battery has a low temperature performance, can realize the superior functions such as large multiplying power fast charging and discharging.Lithium titanate battery has the excellent properties that has extended cycle life simultaneously.Therefore lithium titanate battery certainly will become a selection of electrokinetic cell and energy-storage battery as the revolutionary character innovation of lithium battery industry.
The lithium titanate lithium rechargeable battery generally includes positive plate, lithium titanate anode sheet, is interval in the barrier film between positive plate and lithium titanate anode sheet, and electrolyte.Wherein, positive plate comprises plus plate current-collecting body and the anodal diaphragm that is attached on plus plate current-collecting body, and the lithium titanate anode sheet comprises negative current collector and the lithium titanate anode diaphragm that is attached on negative current collector; Barrier film is interval between positive plate and negative plate, plays the electronics iris action, and prevents positive plate and negative plate short circuit.Electrolyte is absorbed by positive plate, negative plate and barrier film, forms the lithium ion path.Lithium rechargeable battery is in when normal operation, and negative pole end and external circuit that the positive terminal of being drawn by plus plate current-collecting body and negative current collector are drawn form the electronics path, lithium ion formation ion path in electrolyte and both positive and negative polarity active material.Electronics path and ion path form the loop jointly, to reach the purpose of normal operation.The electrolyte of lithium ion battery and both positive and negative polarity active material are among airtight shell encirclement, produce unnecessary side reaction to prevent that extraneous steam from entering.
The lithium titanate anode diaphragm is coated with on collector by lithium titanate cathode size and makes.There is the difficult problem of disperseing of slurry in more existing lithium titanate power battery cathode slurry manufacturing technologies more.And lithium titanate cathode size easily forms the jelly shape, causes cathode size to be difficult to be coated with on the aluminium foil base material.Cause the loss of valuable lithium titanate cathode size.
Summary of the invention
The negative plate that the purpose of this invention is to provide a kind of electrokinetic cell, this negative plate have solved the jelly shape problem of lithium titanate cathode size in the prior art, have realized the smooth coating of lithium titanate cathode size.
Concrete technical scheme is as follows:
A kind of negative plate of electrokinetic cell, comprise negative current collector and the cathode membrane that is attached on negative current collector, described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent, described negative electrode active material is the lithium titanate nanometer powder, described solvent is the mixture of organic solvent of ketone and 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent, organic solvent of ketone and 1-METHYLPYRROLIDONE is 36: 2: 2: 1-30: 30-59.
Preferably, the weight ratio of described negative electrode active material, conductive black, binding agent, organic solvent of ketone and 1-METHYLPYRROLIDONE is 36: 2: 2: 11: 49.
Preferably, described organic solvent of ketone is selected from a kind of in acetone, butanone, cyclopentanone or cyclohexanone.
Preferably, described binding agent is polyvinylidene fluoride.
Another object of the present invention is to provide a kind of lithium-ion-power cell that comprises above-mentioned negative plate.
Concrete technical scheme is as follows:
A kind of lithium-ion-power cell comprises the positive plate, above-mentioned negative plate, barrier film, electrolyte and the housing that contains organic solvent of ketone that are arranged in housing.
Another object of the present invention is to provide the preparation method of above-mentioned lithium-ion-power cell.
Concrete technical scheme is as follows:
A kind of preparation method of above-mentioned lithium-ion-power cell comprises the steps:
(1) making of positive plate: positive active material, conductive black, binding agent and stirring solvent are mixed, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on plus plate current-collecting body, then 85-135 ℃ of oven dry, namely get positive plate;
(2) making of negative plate: negative electrode active material, conductive black, binding agent, organic solvent of ketone and 1-METHYLPYRROLIDONE are mixed, obtain cathode size to be applied, cathode size evenly is coated in forms cathode membrane on negative current collector, then 85-135 ℃ of oven dry, namely get negative plate;
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in housing, inject the electrolyte with its respective volume in the housing, namely get described lithium-ion-power cell after sealing.
Preferably, the weight ratio of described positive active material, conductive black, binding agent and solvent is 42: 2.5: 2.5: 53.
Advantage of the present invention is:
The present invention adds a certain proportion of organic solvent of ketone in cathode size, efficiently solve the jelly shape problem of lithium titanate cathode size, has realized the smooth coating of cathode size:
(1) feasibility of lithium titanate anode sheet coating has obtained very big improvement;
(2) the excellent rate of lithium titanate anode sheet coating has obtained very big improvement lifting.
Description of drawings
Fig. 1 is the structural representation of negative plate.
Description of reference numerals: 1, cathode membrane; 2, printing treatment layer; 3, collector (aluminium foil); 4, the collector after printing treatment; 5, negative plate.
Embodiment
The negative plate 5 that the embodiment of the present invention is used comprises the printing treatment layer 2 on negative current collector (aluminium foil) 3, collector tow sides, and is coated in the cathode membrane 1 (as shown in Figure 1) on printing treatment layer 2.
Below by specific embodiment, the present invention is further elaborated.
Embodiment 1
The described lithium-ion-power cell of the present embodiment, comprise the positive plate, negative plate, barrier film, electrolyte and the housing that are arranged in housing, positive plate comprises plus plate current-collecting body and the anodal diaphragm that is attached on plus plate current-collecting body, and negative plate comprises negative current collector and the cathode membrane that is attached on negative current collector; Described anodal diaphragm comprises positive active material, conductive black, binding agent and solvent, and described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent.
Described negative electrode active material is the lithium titanate nanometer powder, described solvent is the mixture of cyclohexanone and 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent, cyclohexanone and 1-METHYLPYRROLIDONE is 36: 2: 2: 11: 49.
The preparation method of lithium-ion-power cell is as follows:
(1) making of positive plate: with positive electrode active material lithium-nickel-cobalt manganese, conductive black, binding agent polyvinylidene fluoride (PVDF) and solvent 1-METHYLPYRROLIDONE (NMP) by weight 42: 2.5: 2.5: 53 ratio uniform stirring mixes, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on the aluminium foil plus plate current-collecting body of thick 20 microns, then 110 ℃ of oven dry, namely get positive plate;
(2) making of negative plate: with negative electrode active material lithium titanate nanometer powder, conductive black, binding agent polyvinylidene fluoride (PVDF), cyclohexanone and 1-METHYLPYRROLIDONE according to weight ratio 36: 2: 2: the ratio uniform stirring of 11: 49 mixes, obtain cathode size to be applied, cathode size evenly is coated on the collector 4 that the printing treatment of thick 20 microns crosses forms cathode membrane 1, then 100 ℃ of oven dry, namely get negative plate 5 (as shown in Figure 1);
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in composite aluminium plastic putamina body, (consisting of of electrolyte: concentration is the lithium hexafluoro phosphate (LiPF of 1mol/l to inject electrolyte with its respective volume in the housing
6) be lithium salts, the mixture of ethylene carbonate (EC), propene carbonate (PC) and dimethyl carbonate (DMC) is solvent, the weight ratio of EC, PC, DMC is 1: 1: 1), namely get the described lithium-ion-power cell of the present embodiment after sealing.The finished product electrokinetic cell is of a size of 232mm (L) x201mm (w) x8.5mm (H).
Embodiment 2
The described lithium-ion-power cell of the present embodiment, comprise the positive plate, negative plate, barrier film, electrolyte and the housing that are arranged in housing, positive plate comprises plus plate current-collecting body and the anodal diaphragm that is attached on plus plate current-collecting body, and negative plate comprises negative current collector and the cathode membrane that is attached on negative current collector; Described anodal diaphragm comprises positive active material, conductive black, binding agent and solvent, and described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent.
Described negative electrode active material is the lithium titanate nanometer powder, and described solvent is the mixture of acetone and 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent, acetone and 1-METHYLPYRROLIDONE is 36: 2: 2: 30: 30.
The preparation method of lithium-ion-power cell is as follows:
(1) making of positive plate: with positive electrode active material lithium-nickel-cobalt manganese, conductive black, binding agent polyvinylidene fluoride (PVDF) and solvent 1-METHYLPYRROLIDONE (NMP) by weight 42: 2.5: 2.5: 53 ratio uniform stirring mixes, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on the aluminium foil plus plate current-collecting body of thick 20 microns, then 110 ℃ of oven dry, namely get positive plate;
(2) making of negative plate: with negative electrode active material lithium titanate nanometer powder, conductive black, binding agent polyvinylidene fluoride (PVDF), acetone and 1-METHYLPYRROLIDONE according to weight ratio 36: 2: 2: the ratio uniform stirring of 30: 30 mixes, obtain cathode size to be applied, cathode size evenly is coated on the collector 4 that the printing treatment of thick 20 microns crosses forms cathode membrane 1, then 100 ℃ of oven dry, namely get negative plate 5;
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in composite aluminium plastic putamina body, (consisting of of electrolyte: concentration is the lithium hexafluoro phosphate (LiPF of 1mol/l to inject electrolyte with its respective volume in the housing
6) be lithium salts, the mixture of ethylene carbonate (EC), propene carbonate (PC) and dimethyl carbonate (DMC) is solvent, the weight ratio of EC, PC, DMC is 1: 1: 1), namely get the described lithium-ion-power cell of the present embodiment after sealing.The finished product electrokinetic cell is of a size of 232mm (L) x201mm (w) x8.5mm (H).
Embodiment 3
The described lithium-ion-power cell of the present embodiment, comprise the positive plate, negative plate, barrier film, electrolyte and the housing that are arranged in housing, positive plate comprises plus plate current-collecting body and the anodal diaphragm that is attached on plus plate current-collecting body, and negative plate comprises negative current collector and the cathode membrane that is attached on negative current collector; Described anodal diaphragm comprises positive active material, conductive black, binding agent and solvent, and described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent.
Described negative electrode active material is the lithium titanate nanometer powder, and described solvent is the mixture of butanone and 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent, butanone and 1-METHYLPYRROLIDONE is 36: 2: 2: 1: 59.
The preparation method of lithium-ion-power cell is as follows:
(1) making of positive plate: with positive electrode active material lithium-nickel-cobalt manganese, conductive black, binding agent polyvinylidene fluoride (PVDF) and solvent 1-METHYLPYRROLIDONE (NMP) by weight 42: 2.5: 2.5: 53 ratio uniform stirring mixes, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on the aluminium foil plus plate current-collecting body of thick 20 microns, then 110 ℃ of oven dry, namely get positive plate;
(2) making of negative plate: with negative electrode active material lithium titanate nanometer powder, conductive black, binding agent polyvinylidene fluoride (PVDF), butanone and 1-METHYLPYRROLIDONE according to weight ratio 36: 2: 2: the ratio uniform stirring of 1: 59 mixes, obtain cathode size to be applied, cathode size evenly is coated on the collector 4 that the printing treatment of thick 20 microns crosses forms cathode membrane 1, then 100 ℃ of oven dry, namely get negative plate 5;
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in composite aluminium plastic putamina body, (consisting of of electrolyte: concentration is the lithium hexafluoro phosphate (LiPF of 1mol/l to inject electrolyte with its respective volume in the housing
6) be lithium salts, the mixture of ethylene carbonate (EC), propene carbonate (PC) and dimethyl carbonate (DMC) is solvent, the weight ratio of EC, PC, DMC is 1: 1: 1), namely get the described lithium-ion-power cell of the present embodiment after sealing.The finished product electrokinetic cell is of a size of 232mm (L) x201mm (w) x8.5mm (H).
Embodiment 4
The described lithium-ion-power cell of the present embodiment, comprise the positive plate, negative plate, barrier film, electrolyte and the housing that are arranged in housing, positive plate comprises plus plate current-collecting body and the anodal diaphragm that is attached on plus plate current-collecting body, and negative plate comprises negative current collector and the cathode membrane that is attached on negative current collector; Described anodal diaphragm comprises positive active material, conductive black, binding agent and solvent, and described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent.
Described negative electrode active material is the lithium titanate nanometer powder, described solvent is the mixture of cyclopentanone and 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent, cyclopentanone and 1-METHYLPYRROLIDONE is 36: 2: 2: 15: 45.
The preparation method of lithium-ion-power cell is as follows:
(1) making of positive plate: with positive electrode active material lithium-nickel-cobalt manganese, conductive black, binding agent polyvinylidene fluoride (PVDF) and solvent 1-METHYLPYRROLIDONE (NMP) by weight 42: 2.5: 2.5: 53 ratio uniform stirring mixes, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on the aluminium foil plus plate current-collecting body of thick 20 microns, then 110 ℃ of oven dry, namely get positive plate;
(2) making of negative plate: with negative electrode active material lithium titanate nanometer powder, conductive black, binding agent polyvinylidene fluoride (PVDF), cyclopentanone and 1-METHYLPYRROLIDONE according to weight ratio 36: 2: 2: the ratio uniform stirring of 15: 45 mixes, obtain cathode size to be applied, cathode size evenly is coated on the collector 4 that the printing treatment of thick 20 microns crosses forms cathode membrane 1, then 100 ℃ of oven dry, namely get negative plate 5;
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in composite aluminium plastic putamina body, (consisting of of electrolyte: concentration is the lithium hexafluoro phosphate (LiPF of 1mol/l to inject electrolyte with its respective volume in the housing
6) be lithium salts, the mixture of ethylene carbonate (EC), propene carbonate (PC) and dimethyl carbonate (DMC) is solvent, the weight ratio of EC, PC, DMC is 1: 1: 1), namely get the described lithium-ion-power cell of the present embodiment after sealing.The finished product electrokinetic cell is of a size of 232mm (L) x201mm (w) x8.5mm (H).
Comparative Examples 1
The described lithium-ion-power cell of the present embodiment, comprise the positive plate, negative plate, barrier film, electrolyte and the housing that are arranged in housing, positive plate comprises plus plate current-collecting body and the anodal diaphragm that is attached on plus plate current-collecting body, and negative plate comprises negative current collector and the cathode membrane that is attached on negative current collector; Described anodal diaphragm comprises positive active material, conductive black, binding agent and solvent, and described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent.
Described negative electrode active material is the lithium titanate nanometer powder, and described solvent is 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent and 1-METHYLPYRROLIDONE is 36: 2: 2: 60.
The preparation method of lithium-ion-power cell is as follows:
(1) making of positive plate: with positive electrode active material lithium-nickel-cobalt manganese, conductive black, binding agent polyvinylidene fluoride (PVDF) and solvent 1-METHYLPYRROLIDONE (NMP) by weight 42: 2.5: 2.5: 53 ratio uniform stirring mixes, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on the aluminium foil plus plate current-collecting body of thick 20 microns, then 110 ℃ of oven dry, namely get positive plate.
(2) making of negative plate: with negative electrode active material lithium titanate nanometer powder, conductive black, binding agent polyvinylidene fluoride (PVDF) and 1-METHYLPYRROLIDONE according to weight ratio 36: 2: 2: 60 ratio uniform stirring mixes, obtain cathode size to be applied, cathode size evenly is coated on the collector that the printing treatment of thick 20 microns crosses forms cathode membrane, then 100 ℃ of oven dry, namely get negative plate.
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in composite aluminium plastic putamina body, (consisting of of electrolyte: concentration is the lithium hexafluoro phosphate (LiPF of 1mol/l to inject electrolyte with its respective volume in the housing
6) be lithium salts, the mixture of ethylene carbonate (EC), propene carbonate (PC) and dimethyl carbonate (DMC) is solvent, the weight ratio of EC, PC, DMC is 1: 1: 1), namely get the described lithium-ion-power cell of this Comparative Examples after sealing.The finished product electrokinetic cell is of a size of 232mm (L) x201mm (w) x8.5mm (H).
Embodiment 5: performance test
The performance test results sees Table 1:
Table 1 embodiment 1-3 and Comparative Examples 1 results of property are relatively
| Case | The cathode size outward appearance | The negative plate coating | Be coated with excellent rate |
| Embodiment 1 | Natural fluid | Feasible | By (95.0%) |
| Embodiment 2 | Natural fluid | Feasible | By (93.0%) |
| Embodiment 3 | Natural fluid | Feasible | By (80.0%) |
| Embodiment 4 | Natural fluid | Feasible | By (83.0%) |
| Comparative Examples 1 | The jelly shape | Infeasible | Not by (20.0%) |
Can find out from the performance test results of table 1: the present invention adds a certain proportion of organic solvent of ketone cathode size, efficiently solves the jelly shape problem of lithium titanate cathode size, has realized the smooth coating of cathode size.With respect to existing technology, lithium rechargeable battery of the present invention has the following advantages:
(1) feasibility of lithium titanate anode pole coating has obtained very big improvement;
(2) the excellent rate of lithium titanate anode pole coating has obtained very big improvement lifting.
Be more than for the illustrating of possible embodiments of the present invention, but this embodiment limits the scope of the claims of the present invention, allly do not break away from the equivalence that skill spirit of the present invention does and implement or change, all should be contained in the scope of the claims of the present invention.
Claims (7)
1. the negative plate of an electrokinetic cell, comprise negative current collector and the cathode membrane that is attached on negative current collector, described cathode membrane comprises negative electrode active material, conductive black, binding agent and solvent, it is characterized in that, described negative electrode active material is the lithium titanate nanometer powder, described solvent is the mixture of organic solvent of ketone and 1-METHYLPYRROLIDONE, and the weight ratio of described negative electrode active material, conductive black, binding agent, organic solvent of ketone and 1-METHYLPYRROLIDONE is 36: 2: 2: 1-30: 30-59.
2. negative plate according to claim 1, is characterized in that, the weight ratio of described negative electrode active material, conductive black, binding agent, organic solvent of ketone and 1-METHYLPYRROLIDONE is 36: 2: 2: 11: 49.
3. negative plate according to claim 1 and 2, is characterized in that, described organic solvent of ketone is selected from a kind of in acetone, butanone, cyclopentanone or cyclohexanone.
4. negative plate according to claim 1 and 2, is characterized in that, described binding agent is polyvinylidene fluoride.
5. a lithium-ion-power cell, is characterized in that, comprises the positive plate that is arranged in housing, as the described negative plate of claim 1-4 any one, barrier film, electrolyte and housing.
6. the preparation method of a lithium-ion-power cell as claimed in claim 5, is characterized in that, comprises the steps:
(1) making of positive plate: positive active material, conductive black, binding agent and stirring solvent are mixed, obtain anode sizing agent to be applied, anode sizing agent evenly is coated in forms anodal diaphragm on plus plate current-collecting body, then 85-135 ℃ of oven dry, namely get positive plate;
(2) making of negative plate: negative electrode active material, conductive black, binding agent, organic solvent of ketone and 1-METHYLPYRROLIDONE are mixed, obtain cathode size to be applied, cathode size evenly is coated in forms cathode membrane on negative current collector, then 85-135 ℃ of oven dry, namely get negative plate;
(3) with positive plate, negative plate by the mode of lamination or coiling and use barrier film both to keep apart and make battery, be encased in housing, inject the electrolyte with its respective volume in the housing, namely get described lithium-ion-power cell after sealing.
7. preparation method according to claim 6, is characterized in that, the weight ratio of described positive active material, conductive black, binding agent and solvent is 42: 2.5: 2.5: 53.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602071A (en) * | 2016-12-09 | 2017-04-26 | 中国电子新能源（武汉）研究院有限责任公司 | Positive electrode slurry for sodium ion battery and preparation method for positive electrode slurry |
| CN108428564A (en) * | 2017-02-14 | 2018-08-21 | 东莞东阳光科研发有限公司 | A kind of preparation method of lithium-ion capacitor negative plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855590A (en) * | 2005-04-27 | 2006-11-01 | 剩宜科技股份有限公司 | Lithium polymer batteries |
| CN101667635A (en) * | 2008-09-02 | 2010-03-10 | Tdk株式会社 | Electrode manufacturing method |
| US20100124705A1 (en) * | 2008-11-19 | 2010-05-20 | Tdk Corporation | Fiber-containing polymer film and method of manufacturing same, and electrochemical device and method of manufacturing same |
| CN101877407A (en) * | 2009-04-30 | 2010-11-03 | 比亚迪股份有限公司 | Cathode active material, preparation method thereof and battery |
-
2011
- 2011-11-14 CN CN201110360329.5A patent/CN103107308B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855590A (en) * | 2005-04-27 | 2006-11-01 | 剩宜科技股份有限公司 | Lithium polymer batteries |
| CN101667635A (en) * | 2008-09-02 | 2010-03-10 | Tdk株式会社 | Electrode manufacturing method |
| US20100124705A1 (en) * | 2008-11-19 | 2010-05-20 | Tdk Corporation | Fiber-containing polymer film and method of manufacturing same, and electrochemical device and method of manufacturing same |
| CN101877407A (en) * | 2009-04-30 | 2010-11-03 | 比亚迪股份有限公司 | Cathode active material, preparation method thereof and battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602071A (en) * | 2016-12-09 | 2017-04-26 | 中国电子新能源（武汉）研究院有限责任公司 | Positive electrode slurry for sodium ion battery and preparation method for positive electrode slurry |
| CN106602071B (en) * | 2016-12-09 | 2020-05-05 | 中国电子新能源（武汉）研究院有限责任公司 | Sodium ion battery positive electrode slurry and preparation method thereof |
| CN108428564A (en) * | 2017-02-14 | 2018-08-21 | 东莞东阳光科研发有限公司 | A kind of preparation method of lithium-ion capacitor negative plate |
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