CN107394113A - Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery - Google Patents
Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery Download PDFInfo
- Publication number
- CN107394113A CN107394113A CN201710422029.2A CN201710422029A CN107394113A CN 107394113 A CN107394113 A CN 107394113A CN 201710422029 A CN201710422029 A CN 201710422029A CN 107394113 A CN107394113 A CN 107394113A
- Authority
- CN
- China
- Prior art keywords
- applies
- battery
- ion battery
- power lithium
- surface coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 42
- 239000011248 coating agent Substances 0.000 title abstract description 23
- 238000000576 coating method Methods 0.000 title abstract description 23
- 239000003792 electrolyte Substances 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 229910002706 AlOOH Inorganic materials 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 3
- 239000002002 slurry Substances 0.000 claims description 23
- 239000002033 PVDF binder Substances 0.000 claims description 21
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 21
- 238000010422 painting Methods 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000006258 conductive agent Substances 0.000 claims description 9
- 239000007774 positive electrode material Substances 0.000 claims description 8
- 229910052594 sapphire Inorganic materials 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 7
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 7
- 230000006872 improvement Effects 0.000 claims description 7
- 239000011883 electrode binding agent Substances 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 229910018632 Al0.05O2 Inorganic materials 0.000 claims description 2
- 229910013677 LiNixMnyCo1-x-yO2 Inorganic materials 0.000 claims description 2
- 229910013686 LiNixMnyCo1−x−yO2 Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 2
- 239000011149 active material Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000004048 modification Effects 0.000 abstract description 9
- 238000012986 modification Methods 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 239000006255 coating slurry Substances 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 12
- 238000004513 sizing Methods 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 238000001035 drying Methods 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- SJHAYVFVKRXMKG-UHFFFAOYSA-N 4-methyl-1,3,2-dioxathiolane 2-oxide Chemical compound CC1COS(=O)O1 SJHAYVFVKRXMKG-UHFFFAOYSA-N 0.000 description 10
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- 239000000654 additive Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 7
- 239000010439 graphite Substances 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- 229910003002 lithium salt Inorganic materials 0.000 description 6
- 159000000002 lithium salts Chemical class 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910013716 LiNi Inorganic materials 0.000 description 4
- 229910013872 LiPF Inorganic materials 0.000 description 4
- 101150058243 Lipf gene Proteins 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OXHNLMTVIGZXSG-UHFFFAOYSA-N 1-Methylpyrrole Chemical class CN1C=CC=C1 OXHNLMTVIGZXSG-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000001467 acupuncture Methods 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical group O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910020784 Co0.2O2 Inorganic materials 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- ANLVEXKNRYNLDH-UHFFFAOYSA-N 1,3-dioxonan-2-one Chemical compound O=C1OCCCCCCO1 ANLVEXKNRYNLDH-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- YBJCDTIWNDBNTM-UHFFFAOYSA-N 1-methylsulfonylethane Chemical compound CCS(C)(=O)=O YBJCDTIWNDBNTM-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical class O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229910007042 Li(CF3SO2)3 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 229910016483 Mn1/3Co1/3O2 Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- -1 ethylene carbonate Ester Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- ZTOMUSMDRMJOTH-UHFFFAOYSA-N glutaronitrile Chemical compound N#CCCCC#N ZTOMUSMDRMJOTH-UHFFFAOYSA-N 0.000 description 1
- 235000019580 granularity Nutrition 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000004040 pyrrolidinones Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
-
- 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
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a surface coating for improving the safety performance of a power lithium ion battery,The surface coating slurry has the composition of α -Al2O3Or AlOOH, the solid content of the surface coating slurry is 5-50%, the surface coating is coated on the surface of a positive plate, a negative plate or a diaphragm of the battery, and the thickness of the surface coating is about 1-15 mu m. After the surface coating modification technology is applied to the power battery, direct contact of positive and negative pole pieces of the battery is avoided, the internal resistance of the battery in a thermal runaway state is obviously increased due to the insulating property of the surface coating, and the thermal stability of the positive and negative pole pieces in the thermal runaway state of the battery is improved. Meanwhile, the application of the surface coating technology can improve the liquid retention capacity of the battery, inhibit the oxidation of the electrolyte and enhance the stability of the SEI film, thereby obviously improving the service life of the battery. The application of the surface coating technology in the invention can not only obviously improve the safety performance of the power battery, but also properly improve the cycle capacity of the power battery.
Description
Technical field
The invention belongs to technical field of lithium ion, is related to power lithium-ion battery, in particular, is related to using one
The table that kind improves power lithium-ion battery security performance applies, table applies application and power lithium-ion battery.
Background technology
Energy density, cycle performance and the security performance of power lithium-ion battery are always the exploitation of respective battery product
Emphasis.Therefore, how on the basis of cycle performance of battery and energy density is ensured, the security of electrokinetic cell is further optimized
It can be always the problem faced at present.In existing technologies, in order to improve the security performance of battery, often application contains in battery system
There is the feature electrolyte of flame-retardant additive or high impedance additive, fire retardation is on the one hand played to battery, on the other hand
Increase impedance and reduce the short circuit current of battery, so as to improve the security performance of battery.But the use meeting of feature electrolyte
The chemical property of battery is caused significantly to negatively affect, can especially increase the DC internal resistance (DCR) of battery, aggravate battery
Polarization phenomena, reduce the power-performance and energy density of battery.
The content of the invention
In view of analyzing above, it is an object of the invention to provide a kind of table for improving power lithium-ion battery security performance
Painting, table apply application and power lithium-ion battery, and one layer of aluminum oxide (α-Al is coated in positive pole or negative terminal surface2O3) or hydroxyl
The table of base aluminum oxide (AlOOH) ceramic coating applies technology, and the table painting technology that the present invention is taken can ensure that the energy content of battery is close
On the premise of degree and chemical property, further improve the security performance of battery.One layer of oxygen is applied in positive pole or negative terminal surface table
Change aluminium/aluminum oxyhydroxide nano-ceramic layer, play a part of increasing electrode slice sheet resistance and improve electrode slice heat endurance, from
And battery hot-spot or it is short-circuit when play safeguard protection and fire-retardant effect；Ceramic top coat is introduced on negative plate surface,
Destruction of the HF acid to SEI films can be slowed down, the introducing of top coat can increase the porosity of negative plate, improve the imbibition energy of battery
Power；Top coat is introduced on positive plate surface, oxidation of the electrolyte under high potential can be alleviated, improve the life-span of battery.
To realize the purpose of the present invention, the invention provides a kind of table for improving power lithium-ion battery security performance to apply,
Ceramic slurry is homogenized to form table painting slurry, table is then applied into positive plate or negative plate surface of the slurry coated in battery.
It can be top coat that the table, which applies, and the feature of the top coat includes table and applies paste composition, table painting slurry purity, table painting
Position, top coat thickness, table apply pole piece porosity, pole piece resistance.The composition that described table applies slurry is α-Al2O3Or
AlOOH。
Further, table applies paste composition α-Al2O3Or AlOOH purity is 95%~99.999%, tap density is
0.5~5g/cm3, the size of D50 granularities is 0.1~5 μm.
Further, when table applies slurry homogenate, used binding agent is polyvinylidene fluoride (PVDF), butadiene-styrene rubber
(SBR) combined with carboxymethyl cellulose (CMC), one kind in polyacrylate, the solid content that table applies slurry is 5%~50%.
Further, table applies positive plate or negative plate surface of the slurry coated in battery, and the thickness of top coat is 1~15
μm。
Further, the pole piece electrical conductivity that table applies pole piece is 0.10-0.30 Ω cm, and the porosity that table applies pole piece is 20%
~50%, the peel strength that table applies pole piece is 0.5~10N.
Correspondingly, present invention also offers a kind of using above-mentioned any improvement power lithium-ion battery security performance
The application that table applies, the composition that the table that described table applies applies slurry is α-Al2O3Or AlOOH, the table are applied coated in battery just
Pole piece or negative plate surface.
Correspondingly, present invention also offers using above-mentioned any improvement power lithium-ion battery security performance
The power lithium-ion battery that table applies, the lithium ion battery include positive plate, negative plate, barrier film, electrolyte；
The positive plate composition includes positive electrode and cathode metal collector, and the positive electrode includes positive conductive
Agent, positive electrode binder and positive electrode active materials, the mass ratio that the positive electrode active materials account for positive electrode are 92%-99%, institute
The positive conductive agent stated is one in acetylene black, CNT (CNT), graphene, conductive black, flaky graphite, carbon fiber
Kind or two or more combinations, described positive electrode binder are polyvinylidene fluoride (PVDF)；
The negative plate composition includes negative material and negative current collector, and the negative material includes cathode conductive agent, born
Pole binding agent and negative active core-shell material, it is 90%-97% that negative active core-shell material, which accounts for negative material mass ratio, the cathode conductive agent
For one or both of acetylene black, CNT (CNT), graphene, conductive black, flaky graphite, carbon fiber above
Combination, described negative electrode binder are that butadiene-styrene rubber (SBR) combines with carboxymethyl cellulose (CMC)；
The barrier film is in polyolefin micropore barrier diaphragm, nonwoven cloth diaphragm, PVDF gelatin membranes, ceramic diaphragm, fibre diaphragm
One kind；
The electrolyte includes electrolyte lithium salts, electrolyte solvent, film for additive, and the electrolyte lithium salts is LiPF6、
LiBF4、LiClO4、LiN(CF3SO2)2、Li(CF3SO2)3One or both of more than；The electrolyte solvent is ethylene carbonate
Ester (EC), propene carbonate (PC), butylene, dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate
(EMC), fluorinated ethylene carbonate (FEC), glutaronitrile (CLN), adiponitrile (ADN), the first and second sulfones (EMS), ethylenedioxy ethane, first
Combination more than one or both of epoxide ethyl-methyl sulfone (MEMS)；The film for additive is vinylene carbonate
(VC), the combination of one or both of propylene sulfite (PS).
Further, the positive electrode active materials are compound transition metal oxide, preferably lithium transition-metal oxide
LiNixMnyCo1-x-yO2(x=y=1/3 or x=0.5, y=0.3 or x=0.8, y=0.1) and LiNi0.85Mn0.10Al0.05O2In
One or more；The negative material is more than one or both of Delanium, native graphite, soft carbon, hard carbon.
Further, the thickness of the barrier film is 10-40 μm, porosity 25%-50%.
Relative to prior art, beneficial effect possessed by the present invention：
After applying technology modification battery positive/negative plate using table, battery will not be caused in battery normal use obvious negative
Face rings, and after negative terminal surface introduces ceramic top coat, can be chemically reacted with HF acid, reduces HF acid and SEI films are broken
It is bad, the liquid-keeping property of negative plate can be improved, improves the cycle life of battery；After ceramic top coat being introduced on positive plate surface,
Oxidation reaction of the electrolyte under high potential can be slowed down, reduce the generation of side reaction, improve the security of battery；Go out in battery
During existing runaway condition, the insulating properties of top coat can increase battery it is out of control when internal resistance, the direct of both positive and negative polarity pole piece can be avoided
Contact, it is obviously improved the security performance of battery.
Brief description of the drawings
Fig. 1 is that the normal temperature of the lithium ion battery prepared respectively according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3 follows
Ring curve map.
Fig. 2 is the charged shape of the lithium ion battery prepared respectively according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3
State-power.
Fig. 3 is the charged shape of the lithium ion battery prepared respectively according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3
State-DC internal resistance curve map.
Fig. 4 is the electrochemistry of the lithium ion battery prepared respectively according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3
High rate performance figure.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It is it should be appreciated that described herein
Specific embodiment only to explain the present invention, be not intended to limit the present invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
Embodiment 1：
(1) prepare table and apply slurry：By the α-Al of 30% mass ratio2O3, 4.0% mass ratio polyvinylidene fluoride (PVDF)
It is added separately in the 1-METHYLPYRROLIDONE (NMP) of 66% mass ratio, it is small that 2~6 is stirred under 1500~2000r/min of rotating speed
When be uniformly mixed into table apply slurry.
(2) anode sizing agent is prepared：By the LiNi of 98.25% mass ratio1/3Mn1/3Co1/3O2Positive electrode active materials, 0.6%
CNT (CNT) conductive agent, the polyvinylidene fluoride (PVDF) of 1.15% mass ratio of mass ratio are added separately to N- methyl
In pyrrolidones (NMP), stirred under rotating speed 2000r/min and be mixed into anode sizing agent.
(3) cathode size is prepared：By the Delanium of 76.56% mass ratio, the native graphite of 19.14% mass ratio, 1%
The butadiene-styrene rubber (SBR) of the conductive black of mass ratio, the carboxymethyl cellulose (CMC) of 1.5% mass ratio and 1.8% mass ratio point
It is not added in negative pole solvent deionized water, is stirred under rotating speed 2000r/min and be mixed into cathode size.
(4) anode pole piece is prepared：The anode sizing agent being prepared is coated uniformly on cathode metal afflux by coating machine
The two sides of body aluminium foil, one side surface density are 16.60mg/cm2, through drying, after roll-in, obtain anode pole piece.
(5) cathode pole piece is prepared：The cathode size being prepared is coated uniformly on negative metal afflux by coating machine
The two sides of body copper foil, one side surface density are 9.20mg/cm2, through drying, after roll-in, obtain cathode pole piece.
(6) prepare table and apply cathode pole piece：By volume on obtained cathode pole piece to coating generator terminal, obtained table painting slurry is led to
The surface that coating machine is uniformly coated in cathode pole piece is crossed, it is 4 μm that control table, which applies thickness, is obtained after drying negative after table applies
Pole piece.
(7) battery core is prepared：The positive and negative electrode pole piece prepared is stacked or is wound into battery core by the alternate mode of positive and negative electrode,
For wherein both positive and negative polarity with porosity 45%, thickness is that 16 μm of barrier film separates, and ensures that attached material area negative pole size is more than positive pole size；
Positive and negative electrode lug is by being welded and fixed；Battery core is put into battery container, electrolyte inlet is left on battery container；Battery core
24h, which is toasted, at 80 DEG C removes moisture.
(8) fluid injection is encapsulated：It is LiPF to inject 155g lithium salts into battery container from electrolyte inlet6, electrolyte solvent
For (EC), dimethyl carbonate (DMC) and diethyl carbonate (DEC) mixture, additive is the electricity of propylene sulfite (PS)
Liquid injection port is sealed after solution liquid.
(9) preliminary filling is melted into：Packaged battery is subjected to preliminary filling chemical conversion in succession using stepped charge and discharge system, first
By battery with 0.02C-0.1C electric currents be charged to 4.0V carry out preliminary filling, 45 DEG C ageing 72h after, using cold-hot pressure exclude caused by gas
Body；The system then completely discharged using full charge in 2.75V-4.20V voltage range using 0.5C-1C electric currents is entered to battery
Row chemical conversion.
Comparative example 1：
(1) anode sizing agent is prepared：By the LiNi of 98.25% mass ratio1/3Mn1/3Co1/3O2Positive electrode active materials, 0.6% matter
CNT (CNT) conductive agent, the polyvinylidene fluoride (PVDF) of 1.15% mass ratio of amount ratio are added separately to N- methyl pyrroles
In pyrrolidone (NMP), stirred under rotating speed 2000r/min and be mixed into anode sizing agent.
(2) cathode size is prepared：By the Delanium of 76.56% mass ratio, the native graphite of 19.14% mass ratio, 1%
The butadiene-styrene rubber (SBR) of the conductive black of mass ratio, the carboxymethyl cellulose (CMC) of 1.5% mass ratio and 1.8% mass ratio point
It is not added in negative pole solvent deionized water, is stirred under rotating speed 2000r/min and be mixed into cathode size.
(3) anode pole piece is prepared：The anode sizing agent being prepared is coated uniformly on cathode metal afflux by coating machine
The two sides of body aluminium foil, one side surface density are 16.60mg/cm2, through drying, after roll-in, obtain anode pole piece.
(4) cathode pole piece is prepared：The cathode size being prepared is coated uniformly on negative metal afflux by coating machine
The two sides of body copper foil, one side surface density are 9.20mg/cm2, through drying, after roll-in, obtain cathode pole piece.
(5) battery core is prepared：The positive and negative electrode pole piece prepared is stacked or is wound into battery core by the alternate mode of positive and negative electrode,
For wherein both positive and negative polarity with porosity 45%, thickness is that 16 μm of barrier film separates, and ensures that attached material area negative pole size is more than positive pole size；
Positive and negative electrode lug is by being welded and fixed；Battery core is put into battery container, electrolyte inlet is left on battery container；Battery core
24h, which is toasted, at 80 DEG C removes moisture.
(6) fluid injection is encapsulated：It is LiPF to inject 155g lithium salts into battery container from electrolyte inlet6, electrolyte solvent
For (EC), dimethyl carbonate (DMC) and diethyl carbonate (DEC) mixture, additive is the electricity of propylene sulfite (PS)
Liquid injection port is sealed after solution liquid.
(7) preliminary filling is melted into：Packaged battery is subjected to preliminary filling chemical conversion in succession using stepped charge and discharge system, first
By battery with 0.02C-0.1C electric currents be charged to 4.0V carry out preliminary filling, 45 DEG C ageing 72h after, using cold-hot pressure exclude caused by gas
Body；The system then completely discharged using full charge in 2.75V-4.20V voltage range using 0.5C-1C electric currents is entered to battery
Row chemical conversion.
Embodiment 2：
(1) prepare table and apply slurry：By the polyvinylidene fluoride (PVDF) of the AlOOH of 30% mass ratio, 5.0% mass ratio point
It is not added in the 1-METHYLPYRROLIDONE (NMP) of 60% mass ratio, is stirred 2~6 hours under 1500~2000r/min of rotating speed
It is uniformly mixed into table and applies slurry.
(2) anode sizing agent is prepared：By the LiNi of 98.25% mass ratio0.5Mn0.3Co0.2O2Positive electrode active materials, 0.6% matter
CNT (CNT) conductive agent, the polyvinylidene fluoride (PVDF) of 1.15% mass ratio of amount ratio are added separately to N- methyl pyrroles
In pyrrolidone (NMP), stirred under rotating speed 2000r/min and be mixed into anode sizing agent.
(3) cathode size is prepared：By the Delanium of 76.56% mass ratio, the native graphite of 19.14% mass ratio, 1%
The butadiene-styrene rubber (SBR) of the conductive black of mass ratio, the carboxymethyl cellulose (CMC) of 1.5% mass ratio and 1.8% mass ratio point
It is not added in negative pole solvent deionized water, is stirred under rotating speed 2000r/min and be mixed into cathode size.
(4) anode pole piece is prepared：The anode sizing agent being prepared is coated uniformly on cathode metal afflux by coating machine
The two sides of body aluminium foil, one side surface density are 16.60mg/cm2, through drying, after roll-in, obtain anode pole piece.
(5) cathode pole piece is prepared：The cathode size being prepared is coated uniformly on negative metal afflux by coating machine
The two sides of body copper foil, one side surface density are 9.20mg/cm2, through drying, after roll-in, obtain cathode pole piece.
(6) prepare table and apply cathode pole piece：By volume on obtained cathode pole piece to coating generator terminal, obtained table painting slurry is led to
The surface that coating machine is uniformly coated in cathode pole piece is crossed, it is 5 μm that control table, which applies thickness, is obtained after drying negative after table applies
Pole piece.
(7) battery core is prepared：The positive and negative electrode pole piece prepared is stacked or is wound into battery core by the alternate mode of positive and negative electrode,
For wherein both positive and negative polarity with porosity 45%, thickness is that 16 μm of barrier film separates, and ensures that attached material area negative pole size is more than positive pole size；
Positive and negative electrode lug is by being welded and fixed；Battery core is put into battery container, electrolyte inlet is left on battery container；Battery core
24h, which is toasted, at 80 DEG C removes moisture.
(8) fluid injection is encapsulated：It is LiPF to inject 155g lithium salts into battery container from electrolyte inlet6, electrolyte solvent
For (EC), dimethyl carbonate (DMC) and diethyl carbonate (DEC) mixture, additive is the electricity of propylene sulfite (PS)
Liquid injection port is sealed after solution liquid.
(9) preliminary filling is melted into：Packaged battery is subjected to preliminary filling chemical conversion in succession using stepped charge and discharge system, first
By battery with 0.02C-0.1C electric currents be charged to 4.0V carry out preliminary filling, 45 DEG C ageing 72h after, using cold-hot pressure exclude caused by gas
Body；The system then completely discharged using full charge in 2.75V-4.20V voltage range using 0.5C-1C electric currents is entered to battery
Row chemical conversion.
Embodiment 3：
(1) prepare table and apply slurry：By the α-Al of 30% mass ratio2O3, 5.0% mass ratio polyvinylidene fluoride (PVDF)
It is added separately in the 1-METHYLPYRROLIDONE (NMP) of 65% mass ratio, it is small that 2~6 is stirred under 1500~2000r/min of rotating speed
When be uniformly mixed into table apply slurry.
(2) anode sizing agent is prepared：By the LiNi of 98.25% mass ratio0.5Mn0.3Co0.2O2Positive electrode active materials, 0.6% matter
CNT (CNT) conductive agent, the polyvinylidene fluoride (PVDF) of 1.15% mass ratio of amount ratio are added separately to N- methyl pyrroles
In pyrrolidone (NMP), stirred under rotating speed 2000r/min and be mixed into anode sizing agent.
(3) cathode size is prepared：By the Delanium of 76.56% mass ratio, the native graphite of 19.14% mass ratio, 1%
The butadiene-styrene rubber (SBR) of the conductive black of mass ratio, the carboxymethyl cellulose (CMC) of 1.5% mass ratio and 1.8% mass ratio point
It is not added in negative pole solvent deionized water, is stirred under rotating speed 2000r/min and be mixed into cathode size.
(4) anode pole piece is prepared：The anode sizing agent being prepared is coated uniformly on cathode metal afflux by coating machine
The two sides of body aluminium foil, one side surface density are 16.60mg/cm2, through drying, after roll-in, obtain anode pole piece.
(5) prepare table and apply anode pole piece：By volume on obtained anode pole piece to coating generator terminal, obtained table painting slurry is led to
The surface that coating machine is uniformly coated in cathode pole piece is crossed, it is 3 μm that control table, which applies thickness, is obtained after drying negative after table applies
Pole piece.
(6) cathode pole piece is prepared：The cathode size being prepared is coated uniformly on negative metal afflux by coating machine
The two sides of body copper foil, one side surface density are 9.20mg/cm2, through drying, after roll-in, obtain cathode pole piece.
(7) battery core is prepared：The positive and negative electrode pole piece prepared is stacked or is wound into battery core by the alternate mode of positive and negative electrode,
For wherein both positive and negative polarity with porosity 45%, thickness is that 16 μm of barrier film separates, and ensures that attached material area negative pole size is more than positive pole size；
Positive and negative electrode lug is by being welded and fixed；Battery core is put into battery container, electrolyte inlet is left on battery container；Battery core
24h, which is toasted, at 80 DEG C removes moisture.
(8) fluid injection is encapsulated：It is LiPF to inject 155g lithium salts into battery container from electrolyte inlet6, electrolyte solvent
For (EC), dimethyl carbonate (DMC) and diethyl carbonate (DEC) mixture, additive is the electricity of propylene sulfite (PS)
Liquid injection port is sealed after solution liquid.
(9) preliminary filling is melted into：Packaged battery is subjected to preliminary filling chemical conversion in succession using stepped charge and discharge system, first
By battery with 0.02C-0.1C electric currents be charged to 4.0V carry out preliminary filling, 45 DEG C ageing 72h after, using cold-hot pressure exclude caused by gas
Body；The system then completely discharged using full charge in 2.75V-4.20V voltage range using 0.5C-1C electric currents is entered to battery
Row chemical conversion.
Here is the test result of lithium ion battery prepared by embodiment 1, comparative example 1, embodiment 2 and embodiment 3：
The 5mm safety of acupuncture test results of the power lithium-ion battery prepared in 1 different embodiments of table
It is the normal temperature of the lithium ion battery prepared according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3 as shown in Figure 1
Cycle performance curve map.Contrast is understood, the embodiment battery sample after application technology modification is applied than blank example system using table
The good cycling stability of standby battery sample, there is more excellent cycle performance.Because the pole piece liquid-keeping property after table painting
It is stronger, caused by the stability of the SEI films of battery in cyclic process is more excellent.It is according to embodiment 1, right as shown in Figures 2 and 3
State-of-charge-the power and state-of-charge-direct current of lithium ion battery prepared by ratio 1, embodiment 2 and embodiment 3
Curve map is hindered, contrast understands that the D.C. resistance of each embodiment and comparative example approaches, and the introducing of top coat is not to normal work electricity
The internal resistance of battery in the range of pressure adversely affects；Contrast each embodiment and the power-performance of comparative example battery is understood, implement
The power-performance of example 1,2 and 3 is better than comparative example, and the use of table painting technology improves the power characteristic of electrokinetic cell.As shown in Figure 4
For the high rate performance curve map of the lithium ion battery prepared according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3：Contrast can
Know, the high rate performance using the embodiment battery after table painting modification is similar with the high rate performance of blank battery sample, just
Behind pole or negative plate surface applications table painting technology, the high rate performance of battery is not caused significantly to influence.
Table 1 show the 5mm pins of the lithium ion battery prepared according to embodiment 1, comparative example 1, embodiment 2 and embodiment 3
Pierce the performance test results.Contrast understands that the embodiment battery of modification is applied using table can pass through lancing test, before and after acupuncture
Voltage and the surface temperature change of cell and unobvious；The comparative example battery for not applying technology using table fails to survey by acupuncture
Out-of-control phenomenon occurs for examination, battery.
In summary, after applying application technology modification lithium ion battery using table, the chemical property of power lithium-ion battery
Do not become negatively affected, the power-performance of battery and cycle life have obtained appropriate improvement after table painting modification.In addition, table applies skill
The application of art can significantly improve the security performance of power lithium-ion battery.
Described above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of table for improving power lithium-ion battery security performance applies, it is characterised in that：The table that described table applies applies slurry
Composition is α-Al2O3Or AlOOH, the table apply positive plate or negative plate surface coated in battery.
2. the table according to claim 1 for improving power lithium-ion battery security performance applies, it is characterised in that：The table applies
Paste composition α-Al2O3Or AlOOH purity is 95%~99.999%, the table applies paste composition α-Al2O3Or
AlOOH tap density is 0.5~5g/cm3, the table painting paste composition α-Al2O3Or AlOOH D50The size of granularity is
0.1~5 μm.
3. the table according to claim 1 for improving power lithium-ion battery security performance applies, it is characterised in that：The positive pole
Piece or negative plate surface top coat thickness are 1~15 μm.
4. the table according to claim 1 for improving power lithium-ion battery security performance applies, it is characterised in that：Table applies slurry
During homogenate, used binding agent is polyvinylidene fluoride (PVDF), butadiene-styrene rubber (SBR) and carboxymethyl cellulose (CMC) group
Close, one kind in polyacrylate.
5. the table according to claim 1 for improving power lithium-ion battery security performance applies, it is characterised in that：Table applies slurry
During homogenate, the solid content that described table applies slurry is 5%~50%.
6. the table according to claim 1 for improving power lithium-ion battery security performance applies, it is characterised in that：Table applies positive pole
The porosity of piece or negative plate is 20%~50%.
7. the table according to claim 1 for improving power lithium-ion battery security performance applies, it is characterised in that：Table applies positive pole
The peel strength of piece or negative plate is 0.5~10N.
8. a kind of table of improvement power lithium-ion battery security performance as any one of claim 1-7 applies application, its
It is characterised by：The composition that the table that the table applies applies slurry is α-Al2O3Or AlOOH, the table apply the positive plate coated in battery
Or negative plate surface.
9. a kind of table of improvement power lithium-ion battery security performance using as any one of claim 1-7 applies dynamic
Power lithium ion battery, it is characterised in that：The lithium ion battery includes positive plate, negative plate, barrier film, electrolyte；The positive pole
Piece composition includes positive electrode and cathode metal collector, and the positive electrode includes positive conductive agent, positive electrode binder and just
Pole active material.
10. the power lithium-ion battery according to right wants 9, it is characterised in that：Further, the positive electrode active materials are
Compound transition metal oxide, preferably lithium transition-metal oxide LiNixMnyCo1-x-yO2(x=y=1/3 or x=0.5, y=
0.3 or x=0.8, y=0.1) and LiNi0.85Mn0.10Al0.05O2One or both of more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422029.2A CN107394113A (en) | 2017-06-07 | 2017-06-07 | Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422029.2A CN107394113A (en) | 2017-06-07 | 2017-06-07 | Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107394113A true CN107394113A (en) | 2017-11-24 |
Family
ID=60332180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710422029.2A Pending CN107394113A (en) | 2017-06-07 | 2017-06-07 | Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107394113A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011077A (en) * | 2017-11-30 | 2018-05-08 | 北京国能电池科技有限公司 | boehmite positive plate, preparation method and lithium ion battery |
| CN109817982A (en) * | 2018-12-27 | 2019-05-28 | 中国电力科学研究院有限公司 | A kind of lithium ion cell positive plate and its modified technique reducing Li dendrite security risk |
| CN109841832A (en) * | 2017-11-29 | 2019-06-04 | 宁德时代新能源科技股份有限公司 | Positive plate and electrochemical cell |
| CN110085867A (en) * | 2019-06-05 | 2019-08-02 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of binder and preparation method thereof for lithium ion battery silicon-carbon cathode |
| JP2019153542A (en) * | 2018-03-06 | 2019-09-12 | トヨタ自動車株式会社 | Positive electrode, nonaqueous electrolyte secondary battery, and method for manufacturing positive electrode |
| JP2019186123A (en) * | 2018-04-13 | 2019-10-24 | トヨタ自動車株式会社 | Positive electrode, nonaqueous electrolyte secondary battery and method for manufacturing positive electrode |
| CN110484066A (en) * | 2019-08-15 | 2019-11-22 | 天津市捷威动力工业有限公司 | A kind of table applies slurry and its coating method |
| CN111009678A (en) * | 2019-12-31 | 2020-04-14 | 广东博龙能源科技有限公司 | Battery manufacturing process for improving battery safety |
| CN112068002A (en) * | 2020-09-21 | 2020-12-11 | 昆山宝创新能源科技有限公司 | Method for rapidly evaluating ceramic composite pole piece |
| KR20210030861A (en) * | 2019-09-10 | 2021-03-18 | 도요타지도샤가부시키가이샤 | Non-aqueous electrolyte secondary battery |
| CN112531174A (en) * | 2020-12-03 | 2021-03-19 | 珠海冠宇动力电池有限公司 | Positive pole piece and battery |
| CN112563496A (en) * | 2019-09-10 | 2021-03-26 | 丰田自动车株式会社 | Non-aqueous electrolyte secondary battery |
| CN112599859A (en) * | 2020-12-28 | 2021-04-02 | 长虹三杰新能源有限公司 | Preparation method of high-energy-density power battery |
| CN113193171A (en) * | 2021-05-06 | 2021-07-30 | 合肥国轩高科动力能源有限公司 | High-safety ternary lithium ion battery and preparation method thereof |
| CN115050926A (en) * | 2022-06-22 | 2022-09-13 | 多氟多新能源科技有限公司 | Preparation method of protective coating for positive and negative pole pieces of lithium ion battery water system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222787A (en) * | 2010-04-15 | 2011-10-19 | 深圳市比克电池有限公司 | Lithium ion battery electrode plate, battery and method for improving battery security |
| CN103050705A (en) * | 2013-01-06 | 2013-04-17 | 天津市捷威动力工业有限公司 | Lithium titanate coated cathode and lithium ion battery using cathode |
| CN103560250A (en) * | 2013-11-07 | 2014-02-05 | 天津市捷威动力工业有限公司 | Lithium ion battery adopting lithium-rich manganese-based material as positive electrode and preparation method of lithium ion battery |
| CN105529433A (en) * | 2016-02-26 | 2016-04-27 | 宁德时代新能源科技股份有限公司 | Electrode with coating and lithium ion battery comprising same |
-
2017
- 2017-06-07 CN CN201710422029.2A patent/CN107394113A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222787A (en) * | 2010-04-15 | 2011-10-19 | 深圳市比克电池有限公司 | Lithium ion battery electrode plate, battery and method for improving battery security |
| CN103050705A (en) * | 2013-01-06 | 2013-04-17 | 天津市捷威动力工业有限公司 | Lithium titanate coated cathode and lithium ion battery using cathode |
| CN103560250A (en) * | 2013-11-07 | 2014-02-05 | 天津市捷威动力工业有限公司 | Lithium ion battery adopting lithium-rich manganese-based material as positive electrode and preparation method of lithium ion battery |
| CN105529433A (en) * | 2016-02-26 | 2016-04-27 | 宁德时代新能源科技股份有限公司 | Electrode with coating and lithium ion battery comprising same |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841832A (en) * | 2017-11-29 | 2019-06-04 | 宁德时代新能源科技股份有限公司 | Positive plate and electrochemical cell |
| CN108011077A (en) * | 2017-11-30 | 2018-05-08 | 北京国能电池科技有限公司 | boehmite positive plate, preparation method and lithium ion battery |
| JP2019153542A (en) * | 2018-03-06 | 2019-09-12 | トヨタ自動車株式会社 | Positive electrode, nonaqueous electrolyte secondary battery, and method for manufacturing positive electrode |
| JP2019186123A (en) * | 2018-04-13 | 2019-10-24 | トヨタ自動車株式会社 | Positive electrode, nonaqueous electrolyte secondary battery and method for manufacturing positive electrode |
| CN109817982A (en) * | 2018-12-27 | 2019-05-28 | 中国电力科学研究院有限公司 | A kind of lithium ion cell positive plate and its modified technique reducing Li dendrite security risk |
| CN110085867A (en) * | 2019-06-05 | 2019-08-02 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of binder and preparation method thereof for lithium ion battery silicon-carbon cathode |
| CN110484066A (en) * | 2019-08-15 | 2019-11-22 | 天津市捷威动力工业有限公司 | A kind of table applies slurry and its coating method |
| CN112563496A (en) * | 2019-09-10 | 2021-03-26 | 丰田自动车株式会社 | Non-aqueous electrolyte secondary battery |
| KR20210030861A (en) * | 2019-09-10 | 2021-03-18 | 도요타지도샤가부시키가이샤 | Non-aqueous electrolyte secondary battery |
| CN112563497A (en) * | 2019-09-10 | 2021-03-26 | 丰田自动车株式会社 | Non-aqueous electrolyte secondary battery |
| KR102466828B1 (en) | 2019-09-10 | 2022-11-14 | 도요타지도샤가부시키가이샤 | Non-aqueous electrolyte secondary battery |
| CN112563497B (en) * | 2019-09-10 | 2024-06-07 | 丰田自动车株式会社 | Nonaqueous electrolyte secondary battery |
| CN111009678A (en) * | 2019-12-31 | 2020-04-14 | 广东博龙能源科技有限公司 | Battery manufacturing process for improving battery safety |
| CN112068002A (en) * | 2020-09-21 | 2020-12-11 | 昆山宝创新能源科技有限公司 | Method for rapidly evaluating ceramic composite pole piece |
| CN112531174A (en) * | 2020-12-03 | 2021-03-19 | 珠海冠宇动力电池有限公司 | Positive pole piece and battery |
| CN112599859A (en) * | 2020-12-28 | 2021-04-02 | 长虹三杰新能源有限公司 | Preparation method of high-energy-density power battery |
| CN113193171A (en) * | 2021-05-06 | 2021-07-30 | 合肥国轩高科动力能源有限公司 | High-safety ternary lithium ion battery and preparation method thereof |
| CN115050926A (en) * | 2022-06-22 | 2022-09-13 | 多氟多新能源科技有限公司 | Preparation method of protective coating for positive and negative pole pieces of lithium ion battery water system |
| CN115050926B (en) * | 2022-06-22 | 2023-07-14 | 多氟多新能源科技有限公司 | Preparation method of lithium ion battery water system positive and negative plate protective coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107394113A (en) | Surface coating for improving safety performance of power lithium ion battery, surface coating application and power lithium ion battery | |
| JP6156939B2 (en) | Lithium ion secondary battery | |
| CN106299332A (en) | A kind of safe power lithium-ion battery of height using lithium titanate blending graphite cathode sheet | |
| CN107275553A (en) | A kind of polymer Li-ion battery and preparation method thereof | |
| US20120208070A1 (en) | Separators for nonaqueous-electrolyte secondary battery, and nonaqueous-electrolyte secondary battery | |
| CN110197894A (en) | Cathode pole piece and lithium ion battery including cathode pole piece | |
| JP2017016879A (en) | Lithium ion secondary battery | |
| EP3113247A1 (en) | Lithium ion secondary battery | |
| JP2010225539A (en) | Electrode for lithium ion secondary battery, and lithium ion secondary battery | |
| CN107394124A (en) | Lithium iron phosphate trace-doped ternary positive electrode material positive plate, preparation method thereof and power lithium ion battery | |
| JP2012043629A (en) | Separator for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery | |
| WO2024032174A1 (en) | Lithium ion battery | |
| JP2017021949A (en) | Nonaqueous lithium battery and application method thereof | |
| CN112635835A (en) | Non-aqueous electrolyte and lithium ion battery with high and low temperature consideration | |
| CN111354904A (en) | Lithium ion battery diaphragm, lithium ion battery electrode and lithium ion battery | |
| WO2014162529A1 (en) | Negative electrode for lithium-ion secondary battery, lithium-ion secondary battery, and method for manufacturing said negative electrode and lithium-ion secondary battery | |
| CN102412387A (en) | Positive pole of lithium ion battery, and manufacturing method for positive pole, and lithium ion battery | |
| WO2023087301A1 (en) | Electrochemical apparatus and electronic device containing said electrochemical apparatus | |
| CN112689915A (en) | Secondary battery positive electrode having improved thermal stability and method for manufacturing the same | |
| JP2012119091A (en) | Nonaqueous electrolytic solution, electrode, and electrochemical device comprising nonaqueous electrolytic solution and electrode | |
| JP2016085838A (en) | Lithium ion secondary battery | |
| JP2019075278A (en) | Laminated structure, lithium secondary battery and method of manufacturing laminated structure | |
| CN109935905B (en) | Electrolyte and lithium ion battery | |
| CN115295762A (en) | Electrochemical device and electricity utilization device | |
| CN112313170A (en) | Carbon material, conductive auxiliary agent, electrode for electricity storage device, and electricity storage device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |
|
| RJ01 | Rejection of invention patent application after publication |