CN106207094B - A kind of lithium battery graphene conductive slurry and preparation method thereof - Google Patents
A kind of lithium battery graphene conductive slurry and preparation method thereof Download PDFInfo
- Publication number
- CN106207094B CN106207094B CN201610616820.2A CN201610616820A CN106207094B CN 106207094 B CN106207094 B CN 106207094B CN 201610616820 A CN201610616820 A CN 201610616820A CN 106207094 B CN106207094 B CN 106207094B
- Authority
- CN
- China
- Prior art keywords
- parts
- lithium battery
- graphene
- graphite
- agent
- 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.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 93
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 62
- 239000002002 slurry Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims description 24
- 238000007613 slurry method Methods 0.000 title description 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 40
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 38
- 239000010439 graphite Substances 0.000 claims abstract description 38
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 22
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 22
- 239000006258 conductive agent Substances 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000000227 grinding Methods 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000012190 activator Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 239000004034 viscosity adjusting agent Substances 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 238000003801 milling Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 8
- -1 hydroxypropyl Chemical group 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 108010010803 Gelatin Proteins 0.000 claims description 5
- 229920002907 Guar gum Polymers 0.000 claims description 5
- 229910052493 LiFePO4 Inorganic materials 0.000 claims description 5
- 239000008273 gelatin Substances 0.000 claims description 5
- 229920000159 gelatin Polymers 0.000 claims description 5
- 235000019322 gelatine Nutrition 0.000 claims description 5
- 235000011852 gelatine desserts Nutrition 0.000 claims description 5
- 239000000665 guar gum Substances 0.000 claims description 5
- 235000010417 guar gum Nutrition 0.000 claims description 5
- 229960002154 guar gum Drugs 0.000 claims description 5
- 229920001285 xanthan gum Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 3
- 239000001856 Ethyl cellulose Substances 0.000 claims description 3
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 3
- 229920000161 Locust bean gum Polymers 0.000 claims description 3
- 229910033181 TiB2 Inorganic materials 0.000 claims description 3
- 229910052810 boron oxide Inorganic materials 0.000 claims description 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 3
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 3
- 229920001249 ethyl cellulose Polymers 0.000 claims description 3
- 238000000703 high-speed centrifugation Methods 0.000 claims description 3
- 239000000711 locust bean gum Substances 0.000 claims description 3
- 235000010420 locust bean gum Nutrition 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 241000206575 Chondrus crispus Species 0.000 claims description 2
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 2
- 235000010489 acacia gum Nutrition 0.000 claims description 2
- 239000001785 acacia senegal l. willd gum Substances 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical group [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 229920003064 carboxyethyl cellulose Polymers 0.000 claims description 2
- 150000007942 carboxylates Chemical group 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 2
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 2
- 229910003002 lithium salt Inorganic materials 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- BYBCMKKXISPQGR-UHFFFAOYSA-N pyrrole-2,5-dione;styrene Chemical group O=C1NC(=O)C=C1.C=CC1=CC=CC=C1 BYBCMKKXISPQGR-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 claims 1
- 238000002242 deionisation method Methods 0.000 claims 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 claims 1
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical class CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 claims 1
- 239000011149 active material Substances 0.000 abstract description 21
- 239000000843 powder Substances 0.000 abstract description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 239000000725 suspension Substances 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 239000007774 positive electrode material Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012496 blank sample Substances 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000006183 anode active material Substances 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229940113088 dimethylacetamide Drugs 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910003548 Li(Ni,Co,Mn)O2 Inorganic materials 0.000 description 1
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- CKFRRHLHAJZIIN-UHFFFAOYSA-N cobalt lithium Chemical compound [Li].[Co] CKFRRHLHAJZIIN-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 229910000319 transition metal phosphate Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 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
- H01M4/133—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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides a kind of lithium battery graphene conductive slurry, it is characterized in that being prepared by 10 15 parts of graphite powders, 0.5 2 parts of activators, 0.5 1 parts of dispersants, 0.2 0.3 parts of colloidal materials, 0.1 0.5 parts of carbon nanotubes, 0.01 0.1 parts of accelerating agents, 85 90 parts of solvents, appropriate viscosity modifier.By being activated to the refinement of graphite, further by disperseing grinding stripping, in grinding unit shearing force, under frictional force effect, micron order accelerating agent makes graphite be stripped into graphene as micro object transfer medium, micron order accelerating agent and graphene simultaneously, carbon nanotube is interweaved in process of lapping by colloidal materials forms compound protomere, there is excellent dispersibility in lithium battery positive and negative anodes active material, greatly improve the efficiency for charge-discharge of active material, simultaneously carrier concentration can be significantly increased with the compound lithium battery conductive agent that is used for of graphene, and the conductivity and discharge capacity of battery active material can be improved.
Description
Technical field
The present invention relates to lithium battery conductive material fields, and in particular to graphene conductive slurry, further to graphene
The preparation method of electrocondution slurry.
Background technology
Positive electrode active materials currently used for lithium ion battery are mostly transition metal oxide or transition metal phosphate
（LiFePO4）, they are all semiconductor or insulator, and electric conductivity is poor, thus have to add in conductive agent to improve conduction
Property；The electric conductivity of cathode graphite material is slightly good, but in multiple charge and discharge, the dilation of graphite material makes graphite particle
Between contact reduce, gap increase in addition some be detached from collectors, become dead active material, be no longer participate in electrode reaction, institute
To be also required to add in the stabilization for the negative material electric conductivity that conductive agent is kept in cyclic process.
Particularly, it is more demanding to high rate capability as lithium battery is as power battery, it needs using additive amount more
Less, more preferably conductive agent promotes the transfer velocity of electrode interior electronics to performance.Important set of the conductive agent as lithium ion battery
Into part, it is largely affected by the performance of lithium ion battery.Since the conductivity of lithium battery positive and negative pole material is all very low, but
Good high rate charge-discharge characteristic, longer service life are also kept, this is exactly current driving force lithium ion battery industry institute
The huge challenge faced.Therefore, conductive agent has important role to improving battery performance.
In order to reach the improvement that less additive amount realizes the energy of high electrical conductivity, technical staff, which posts, wishes that conductive agent can be
It is uniformly dispersed in battery active material and establishes good conductive network, electrode interior active material particle and work are increased with this
Property material grains between and the contact between active material and collector, so as to play the role of reduce electrode ohmic resistance.
If conductive agent is evenly spread in electrode structure, it also acts as the effect of micro- collector, influences electrode interior electronics
Transfer velocity, current level distribution, the holding of electrode structure on electrode, electrode interior imbibition holding capacity, and then improve and live
The utilization rate of property substance.Obviously, traditional carbon black, graphite are difficult to meet is substantially improved electric conductivity under minute quantity adding conditional.
Graphene (Graphene) be it is a kind of by carbon atom form only there are one carbon atom thickness two-dimensional material.Stone
Black alkene is up to 5300W/mK in the thermal conductivity factor that many aspects have all shown excellent performance, particularly graphene, is more than
Carbon nanotube and diamond；Electron mobility under room temperature is more than 15000cm2/Vs, more than carbon nanotubes and silicon crystal；Electricity
Resistance rate only has 10-6Ω cm, it is lower than copper or silver, it is the material of current resistivity minimum.It has in lithium battery conductive agent field
There is huge application development space.
However, at present prepared by the oxidation-reduction method that is obtained by of graphene batch, preparation process causes graphene layer knot
The damage of structure affects the performance of electric conductivity.Chinese patent application No. is 2010105931571 discloses a kind of graphene
Graphite oxide, is uniformly removed into graphene oxide aaerosol solution by the preparation method of composite conductive powder；Make what is be prepared
The atomization of graphene oxide aaerosol solution, reduction treatment obtain graphene composite conductive powder.But the structure and performance of graphene
It is destroyed.The graphene that redox obtains contains a large amount of functional groups, so as to decline conductive agent electric conductivity.
In addition, reach nanoscale due to removing obtained graphene size, it is intergranular to reunite so that it is in lithium battery
It is difficult to effectively disperse in active material, thus is difficult to set up high-effective conductive channel, so as to which the conducting function for causing graphene can not
It gives full play to.
Graphene will greatly be promoted into its effect of dispersion in lithium battery specific activity material with pre-dispersed for conductive slurry
Fruit becomes the trend of the development of high-performance lithium battery conductive agent from now on.However, the conductive slurry for directly preparing graphene and solvent
Since piece shape graphene is difficult to fully dispersed, it is easily caused to be agglomerated during storage and use.
Thus it is guaranteed that graphene-structured completely and the good dispersion of slurry be graphene in lithium battery as conductive agent
Key.
Invention content
It is difficult to disperse using conductive agent for current driving force lithium battery, the defects of electric conductivity is bad, the present invention provides one
The graphene conductive slurry that kind is easily dispersed, not only preparation process is simple, and stable storage, with lithium battery positive and negative anodes activity
Material has good dispersibility and compatibility, so as to form conductive network, improves the efficiency for charge-discharge of active material.
The present invention also aims to provide the preparation method of the graphene conductive slurry.
To achieve the above object, the present invention uses following technical scheme：
A kind of preparation method of lithium battery graphene conductive slurry, it is characterized in that by following parts by weight raw material prepare and
Into：
10-15 parts of graphite powder,
0.5-2 parts of activator,
0.5-1 parts of dispersant,
0.2-0.3 parts of colloidal materials
0.1-0.5 parts of carbon nanotube,
0.01-0.1 parts of accelerating agent,
85-90 parts of solvent,
Appropriate viscosity modifier；
Wherein, the graphite powder is at least one of natural flake graphite, expanded graphite, highly oriented graphite；
The activator is carboxylate；
The dispersant is styrene maleimide resin, in lauryl sodium sulfate, neopelex
One kind；
The colloidal materials are xanthans, locust bean gum, guar gum, Arabic gum, gelatin, in carragheen at least
It is a kind of；
The accelerating agent is at least one in micron-sized titanium diboride, vanadic anhydride, boron oxide, molybdenum disulfide
Kind；It is both stripping media when it is used for the preparation of graphene conductive slurry, and is conductive modifier；
The solvent is deionized water, N-Methyl pyrrolidone, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide
In one kind；
The viscosity modifier is sodium carboxymethylcellulose, carboxyethyl cellulose, ethyl cellulose, sodium carboxymethylethyl are fine
Tie up one or more of element, hydroxymethyl cellulose, hydroxypropyl cellulose.
Specific preparation process is as follows：
（1）The activator of the graphite powder of parts by weight 5-10,0.5-2 parts by weight is mixed under the conditions of 200-250 DEG C
It is even, the fine machine of air-flow is then fed into, high-speed rotational is generated in the fine machine pulverizing chamber of air-flow, generation is sharp between making graphite powder particle
Strong collision, friction so as to crush homogenizing, make graphite powder particle carry out activation modification；
（2）By step（1）Obtained material and 0.1-0.5 parts by weight carbon nanotube, 0.5-1 parts by weight dispersion
Agent, the accelerating agent of 0.01-0.1 parts by weight, 0.2-0.3 parts by weight colloidal materials carry out dispersion stripping in unit is ground,
Unit shearing force, the lower circular grinding of frictional force effect are ground, micron order accelerating agent is shelled graphite as micro object transfer medium
From into graphene, while micron order remover is wound friendship in process of lapping with graphene, carbon nanotube by colloidal materials
The compound adhesive particle knitted, which sees outside in microspheroidal in form, and inherent form is then the meso-hole structure to interweave,
Dispersion suspends excellent in liquid flux；
（3）By step（2）Obtained compound adhesive particle and the solvent of 85-90 parts by weight are sent into ultrasonic disperser, ultrasound
Stirring blade is provided in wave disperser, bottom setting aperture is the stainless steel filtering net of 500 mesh, and the rotating speed of stirring blade is 50-
Discharge valve is opened after 100rpm, ultrasonic disperse 10-30min, it is viscous that suitable viscosity modifier adjustment is added in after strainer filtering
It spends for 100-5000mPa.s, obtains lithium battery graphene conductive slurry.
Wherein, the fine machine of the air-flow is high speed centrifugation airslide disintegrating mill, eddy airstream pulverizer, flat air-flow
Mill, target formula airflow milling, leads to spray formula airflow milling or fluid bed to spraying formula airflow milling, included grader at circulating tube type airflow milling
Crossing grader control makes graphite powder refinement homogenizing, and graphite powder particle is made to be in the state activated completely under activating agent effect.
Graphite and activator are heated before air-flow powder is fine, graphite is made to be in the state of activation, in order to which it is micro- in air-flow
Interlayer structure is easier to be destroyed to be refined homogenizing when thin.
The grinding unit is mixer grinder, sand mill or planetary ball mill.
Preferably, the grinding unit is sand mill.
Preferably, the activator is carboxylic acid lithium salt.
Preferably, the carbon nanotube caliber be 10~50nm, 5~10nm of wall thickness, 1~6 μm of length.
Preferably, the mixer grinder, sand mill, planetary ball mill make abrading-ball using the zirconium silicate of Φ 1-3mm.
Preferably, the grain size of the accelerating agent is 2-5 microns.
By being activated to the refinement of graphite, the reactivity of graphite is improved, further by disperseing grinding stripping, is being ground
Under unit shearing force, frictional force effect, micron order accelerating agent makes graphite be stripped into graphene as micro object transfer medium, together
When micron order accelerating agent and graphene, carbon nanotube compound micro- glue of intertexture is wound by colloidal materials in process of lapping
Grain, which is in microspheroidal on mode of appearance, and inherent form is then the meso-hole structure to interweave.Protomere is in liquid
In there is good suspension, the characteristics of this protrusion, causes the graphene conductive slurry finally obtained in storage, use
Keep splendid dispersibility.The resident lithium battery positive and negative anodes active material of mesoporous energy particularly to interweave, so as to form conductive network,
Greatly improve the efficiency for charge-discharge of active material.
The characteristics of another excellent is：Micron order accelerating agent makes graphite in graphite process of lapping as micro object transfer medium
Be stripped into the graphene that the number of plies is few and is evenly distributed, at the same with graphene is compound can significantly be carried for lithium battery conductive agent
High carrier concentration, and the conductivity and discharge capacity of battery active material can be improved.
A kind of lithium battery graphene conductive slurry, it is characterized in that being prepared by above-mentioned preparation method.In preparation process
Graphite stripping is formed into protomere into graphene and intertexture, this characteristic causes there is good suspension in a liquid, finally
The graphene conductive slurry of acquisition keeps splendid dispersibility in storage, use.The resident lithium of mesoporous energy particularly to interweave
Battery plus-negative plate active material so as to form conductive network, greatly improves the efficiency for charge-discharge of active material.
The graphene conductive slurry that the present invention obtains is the special conductive agent of lithium battery, is suitable for lithium battery positive and negative anodes activity material
Material directly adds use when making.
Preferably, for lithium battery anode active material LiMn2O4（LiMn2O4）, LiFePO4（LiFePO4）, cobalt acid lithium
（LiCoO2）, nickle cobalt lithium manganate（Li(Ni,Co,Mn)O2）The conductive agent of ternary material.
Preferably, for cathode of lithium battery active material Delanium, carbosphere, native graphite, graphite/silicon conduction
Agent.
When preferably, for lithium cobaltate cathode material, N-Methyl pyrrolidone is as solvent, with viscosity modifier by graphite
Alkene combined conductive agent viscosity-adjusting agent is to 4000mPa.s.Powder Vingon and NMP are configured to a concentration of 15% during use
Glue, then addition graphene conductive slurry, cobalt acid lithium stir evenly in glue, wherein cobalt acid lithium, Vingon, conduction
Agent is 95%, 3%, 2% by mass fraction（In terms of graphene conductive slurry kind solid content）Ratio prepare slurry, be sufficiently stirred into
Slurry is coated on aluminium foil, and anode electrode piece is obtained through drying, roll-in.Significant advantage is positive active material gram specific capacity
It is promoted from 138mAh/g to 142mAh/g, the internal resistance of cell falls below 50m Ω from 54m Ω, the capacity retention ratio after 300 cycles
Up to 92%.
A kind of lithium battery graphene conductive slurry and preparation method thereof, it is prominent compared with existing conductive agent technology the characteristics of and
Excellent effect is：
1st, graphite is made to be stripped into graphene, while micron order by the use of micron order accelerating agent as micro object transfer medium
Accelerating agent forms the composite colloidal particle to interweave, the compound protomere in process of lapping with graphene, carbon nanotube by colloidal materials
In microspheroidal on mode of appearance, there is excellent dispersibility in lithium battery positive and negative anodes active material.
2nd, during graphite is removed into graphene, the mesoporous of intertexture can be resident lithium battery positive and negative anodes active material, so as to
Conductive network is formed, greatly improves the efficiency for charge-discharge of active material.
3rd, micron order accelerating agent makes graphite be stripped into the number of plies few in graphite process of lapping as micro object transfer medium
And the graphene being evenly distributed, while carrier concentration can be significantly increased with the compound lithium battery conductive agent that is used for of graphene,
And the conductivity and discharge capacity of battery active material can be improved.
4th, preparation process of the present invention is simple, complete to graphene layer structural defence, production process object pollutant emission,
Production efficiency is high, suitable for large-scale production.
Description of the drawings
Fig. 1 is the SEM that the graphene conductive slurry that embodiment 1 obtains is used for lithium battery silicon carbon anode material（Scanning electricity
Mirror）Figure.
Specific embodiment
By specific embodiment, the present invention is described in further detail, but this should not be interpreted as to the model of the present invention
It encloses and is only limitted to following example.Without departing from the idea of the above method of the present invention, according to ordinary skill knowledge
The various replacements or change made with customary means, should be included in the scope of the present invention.
Embodiment 1
（1）The activator carboxylic acid lithium of the graphite powder of parts by weight 10,0.5 parts by weight is mixed under the conditions of 200-250 DEG C
Uniformly, high speed centrifugation airslide disintegrating mill is then fed into, high-speed rotational is generated in the fine machine pulverizing chamber of air-flow, makes graphite powder particle
Between generate fierce collision, friction, so as to crush homogenizing, graphite powder particle is made to carry out activation modification；
（2）By step（1）Obtained material and the carbon nanotubes of 0.1 parts by weight, the dispersant styrene horse of 1 parts by weight
Bismaleimide resin, the micron order accelerating agent vanadic anhydride of 0.1 parts by weight, 0.2 parts by weight colloidal materials gelatin be sanded
Dispersion stripping is carried out in machine, the circular grinding under sand mill shearing force, frictional force effect, micron order accelerating agent is passed as micro object
Passing medium makes graphite be stripped into graphene, at the same micron order remover and graphene, carbon nanotube in process of lapping by glue
Body material is wound the compound adhesive particle of intertexture, which sees outside in microspheroidal in form, and inherent form is then
For the meso-hole structure of intertexture, dispersion suspension is excellent in liquid flux；
（3）By step（2）Obtained compound adhesive particle and the solvent deionized water of 85 parts by weight is sent into ultrasonic disperser,
Stirring blade is provided in ultrasonic disperser, bottom setting aperture is the stainless steel filtering net of 500 mesh, and the rotating speed of stirring blade is
Discharge valve is opened after 50-100rpm, ultrasonic disperse 10min, suitable viscosity-adjusting agent agent carboxymethyl is added in after strainer filtering
Sodium cellulosate adjustment viscosity is 5000mPa.s, obtains lithium battery graphene conductive slurry.
Dispersion stabilization test is carried out to the graphene conductive slurry that the embodiment obtains:Using spectrophotometer, blank
Sample is gelatin aqueous dispersions.By comparison, the dispersion stability of graphene conductive slurry is complete suspension gelatin dispersion liquid
85.6%.Its dispersion liquid is uniform, stable, the storage period is long.
Further, obtained graphene conductive slurry is passed through into SEM for lithium battery silicon carbon anode material（Scanning electron microscope
Test）, such as attached drawing 1.Graphene is uniformly dispersed with the micellar form of microspheroidal in negative electrode active material.It demonstrates, it is spherical micro-
The dispersion anti-agglomeration performance of micelle.
Embodiment 2
（1）By the natural flake graphite of parts by weight 10,2 parts by weight activator carboxylic acid sodium under the conditions of 200-250 DEG C
It is uniformly mixed, is then fed into spiral jet pulverizer, high-speed rotational is generated in spiral jet pulverizer pulverizing chamber, make graphite powder particle
Between generate fierce collision, friction, so as to crush homogenizing, graphite powder particle is made to carry out activation modification；
（2）By step（1）Obtained material and the carbon nanotubes of 0.2 parts by weight, the dispersant 12 of 0.5-1 parts by weight
Sodium alkyl sulfate, the titanium diboride of 2-5 microns of accelerating agent of 0.05 parts by weight, the colloidal materials xanthans of 0.2 parts by weight are expert at
Dispersion stripping is carried out in celestial body grinding machine, the circular grinding under grinding unit shearing force, frictional force effect, micron order accelerating agent conduct
Micro object transfer medium makes graphite be stripped into graphene, at the same micron order remover with graphene, carbon nanotube ground
The compound adhesive particle of intertexture is wound in journey by colloidal materials, it is in microspheroidal which, which sees outside in form, and interior
It is then the meso-hole structure to interweave in form, dispersion suspension is excellent in liquid flux；
（3）By step（2）Obtained compound adhesive particle and the solvent N-methyl pyrilidone of 90 parts by weight is sent into ultrasonic wave
Disperser, is provided with stirring blade in ultrasonic disperser, and bottom setting aperture is the stainless steel filtering net of 500 mesh, stirring blade
Rotating speed for 50-100rpm, open discharge valve after ultrasonic disperse 30min, suitable viscosity-adjusting agent added in after strainer filtering
Agent hydroxypropyl cellulose adjustment viscosity is 4000mPa.s, obtains lithium battery graphene conductive slurry.
Dispersion stabilization test is carried out to the graphene conductive slurry that the embodiment obtains:Using spectrophotometer, blank
Sample is the N-Methyl pyrrolidone dispersion liquid of xanthans.By comparison, the dispersion stability of graphene conductive slurry is suspends completely
The 91% of xanthans dispersion liquid.Its dispersion liquid is uniform, stable, the storage period is long.
The graphene conductive slurry of viscosity-adjusting agent to 4000mPa.s is used for cobalt acid lithium active material.By powder during use
Vingon is configured to a concentration of 15% glue with NMP, then adds in graphene conductive slurry in glue, cobalt acid lithium is stirred
It mixes uniformly, wherein cobalt acid lithium, Vingon, conductive agent are 95%, 3%, 2% by mass fraction（With solid in graphene conductive slurry
Content meter）Ratio prepare slurry, be sufficiently stirred into slurry and be coated on aluminium foil, anode electrode piece is obtained through drying, roll-in.It is aobvious
The advantage of work is positive active material gram specific capacity from 138mAh/g promotions to 142mAh/g, and the internal resistance of cell is dropped to from 54m Ω
50m Ω, capacity retention ratio after 300 cycles is up to 92%.Micron order accelerating agent is demonstrated to grind with graphene, carbon nanotube
The compound protomere to interweave is formed by colloidal materials during mill, should be in microspheroidal, have in lithium battery anode active material
Excellent dispersibility.The electric conductivity of positive electrode active materials is substantially improved in the conductive network of foundation, so as to promote and improve high power
Rate performance.
Embodiment 3
（1）The activator carboxylic acid lithium of the expanded graphite of parts by weight 8,1 parts by weight is mixed under the conditions of 200-250 DEG C
It is even, be then fed into circulating tube type airflow milling, high-speed rotational generated in circulating tube type airflow milling pulverizing chamber, make graphite powder particle it
Between generate fierce collision, friction, so as to crush homogenizing, graphite powder particle is made to carry out activation modification；
（2）By step（1）Obtained material and the carbon nanotubes of 0.3 parts by weight, the dispersant dodecane of 0.5 parts by weight
Base benzene sulfonic acid sodium salt, the micron-sized boron oxide of accelerating agent of 0.04 parts by weight, 0.2 parts by weight colloidal materials guar gum stirring
Dispersion stripping is carried out in grinder, the circular grinding under mixer grinder shearing force, frictional force effect, micron order accelerating agent conduct
Micro object transfer medium makes graphite be stripped into graphene, at the same micron order remover with graphene, carbon nanotube ground
The compound adhesive particle of intertexture is wound in journey by colloidal materials, it is in microspheroidal which, which sees outside in form, and interior
It is then the meso-hole structure to interweave in form, dispersion suspension is excellent in liquid flux；
（3）By step（2）Obtained compound adhesive particle and the solvent N,N-dimethylformamide of 85 parts by weight is sent into ultrasound
Wave disperser, is provided with stirring blade in ultrasonic disperser, and bottom setting aperture is the stainless steel filtering net of 500 mesh, paddle
The rotating speed of piece is 50-100rpm, opens discharge valve after ultrasonic disperse 20min, suitable viscosity tune is added in after strainer filtering
It is 500mPa.s to save agent ethyl cellulose adjustment viscosity, obtains lithium battery graphene conductive slurry.
Dispersion stabilization test is carried out to the graphene conductive slurry that the embodiment obtains:Using spectrophotometer, blank
Sample is the N,N-dimethylformamide dispersion liquid of guar gum.By comparison, the dispersion stability of graphene conductive slurry is complete
The 88.4% of suspension guar gum dispersion liquid.Its dispersion liquid is uniform, stable, the storage period is long.
Embodiment 4
（1）By the highly oriented graphite of parts by weight 10,1.5 parts by weight activator calcium carboxylates under the conditions of 200-250 DEG C
It is uniformly mixed, is then fed into spraying formula airflow milling, generate high-speed rotational in spray formula airflow milling pulverizing chamber, make graphite powder particle
Between generate fierce collision, friction, so as to crush homogenizing, graphite powder particle is made to carry out activation modification；
（2）By step（1）Obtained material and the carbon nanotubes of 0.5 parts by weight, the dispersant styrene of 0.5 parts by weight
The micron-sized molybdenum disulfide of accelerating agent of maleimide resin, 0.01 parts by weight, the colloidal materials locust bean gum of 0.2 parts by weight
Dispersion stripping is carried out in sand mill, the circular grinding under sand mill shearing force, frictional force effect, micron order accelerating agent is as micro-
Seeing power transfer medium makes graphite be stripped into graphene, while micron order remover and graphene, carbon nanotube are in process of lapping
In be wound the compound adhesive particle of intertexture by colloidal materials, which sees in form outside in microspheroidal, and inherent
Form is then the meso-hole structure to interweave, and dispersion suspension is excellent in liquid flux；
（3）By step（2）Obtained compound adhesive particle and the solvent DMAC N,N' dimethyl acetamide of 90 parts by weight is sent into ultrasound
Wave disperser, is provided with stirring blade in ultrasonic disperser, and bottom setting aperture is the stainless steel filtering net of 500 mesh, paddle
The rotating speed of piece is 50-100rpm, opens discharge valve after ultrasonic disperse 15min, suitable viscosity tune is added in after strainer filtering
It is 2000mPa.s to save agent adjustment viscosity, obtains lithium battery graphene conductive slurry.
The graphene conductive slurry that will be obtained（In terms of solid content in graphene conductive slurry）1.5wt% is being used for lithium battery just
Pole active material LiFePO4.The lithium battery being prepared into is 137mAhg-1, efficiency 99%, voltage platform in 1C charge/discharge capacities
For 3.24V.
Claims (10)
1. a kind of preparation method of lithium battery graphene conductive slurry, it is characterized in that being prepared by the raw material of following parts by weight：
10-15 parts of graphite powder, 0 .5-2 parts of activator, 0 .5-1 parts of dispersant, colloidal materials .3 parts of carbon nanometers of 0 .2-0
.5 parts of 0 .1-0 of pipe .1 parts of 0 .01-0 of accelerating agent, 85-90 parts of solvent, appropriate viscosity modifier；
Wherein, the graphite powder is at least one of natural flake graphite, expanded graphite, highly oriented graphite；The activation
Agent is carboxylate；The dispersant is styrene maleimide resin, lauryl sodium sulfate, neopelex
In one kind；The colloidal materials are xanthans, locust bean gum, guar gum, Arabic gum, gelatin, in carragheen extremely
Few one kind；The accelerating agent is at least one of micron-sized titanium diboride, vanadic anhydride, boron oxide, molybdenum disulfide；
It is both stripping media and conductive modifier when it is used for the preparation of graphene conductive slurry；The solvent is deionization
Water, N-Methyl pyrrolidone, N, dinethylformamide, N, one kind in N- dimethylacetylamides；The viscosity-adjusting agent
Agent is sodium carboxymethylcellulose, carboxyethyl cellulose, ethyl cellulose, carboxymethylethylcellulose, hydroxymethyl cellulose, hydroxypropyl
One or more of base cellulose；
Specific preparation process is as follows：
（1）The activator of the graphite powder of 10-15 parts of parts by weight, 0.5-2 parts by weight is mixed under the conditions of 200-250 DEG C
It is even, the fine machine of air-flow is then fed into, high-speed rotational is generated in the fine machine pulverizing chamber of air-flow, generation is sharp between making graphite powder particle
Strong collision, friction so as to crush homogenizing, make graphite powder particle carry out activation modification；
（2）By step（1）The carbon nanotubes of obtained material and 0.1-0 .5 parts by weight, 0.5-1 parts by weight dispersant,
The accelerating agent of 0.01-0.1 parts by weight, the colloidal materials of 0.2-0 .3 parts by weight carry out dispersion stripping in unit is ground, and are grinding
Grinding machine group shearing force, the lower circular grinding of frictional force effect, micron order accelerating agent are stripped graphite as micro object transfer medium
Into graphene, while micron order remover is wound intertexture in process of lapping with graphene, carbon nanotube by colloidal materials
Compound adhesive particle, which sees in form outside in microspheroidal, and inherent form is then the meso-hole structure to interweave,
Dispersion suspends excellent in liquid flux；
（3）By step（2）Obtained compound adhesive particle and the solvent of 85-90 parts by weight are sent into ultrasonic disperser, ultrasonic wavelength-division
It dissipates and stirring blade is provided in device, bottom setting aperture is the stainless steel filtering net of 500 mesh, and the rotating speed of stirring blade is 50-
Discharge valve is opened after 100rpm, ultrasonic disperse 10-30min, it is viscous that suitable viscosity modifier adjustment is added in after strainer filtering
It spends for 100-5000mPa .s, obtains lithium battery graphene conductive slurry.
2. a kind of preparation method of lithium battery graphene conductive slurry according to claim 1, it is characterised in that：The gas
Fine machine is flowed for high speed centrifugation airslide disintegrating mill, eddy airstream pulverizer, spiral jet pulverizer, circulating tube type airflow milling, target formula
Airflow milling makes graphite powder thin spray formula airflow milling or fluid bed to spraying formula airflow milling, included grader by grader control
Change homogenizing, and graphite powder particle is made to be in the state activated completely under activating agent effect.
3. a kind of preparation method of lithium battery graphene conductive slurry according to claim 1, it is characterised in that：Described grinds
Grinding machine group is mixer grinder, sand mill or planetary ball mill.
4. a kind of preparation method of lithium battery graphene conductive slurry according to claim 1, it is characterised in that：The grinding
Unit is sand mill.
5. a kind of preparation method of lithium battery graphene conductive slurry according to claim 1, it is characterised in that：The work
Agent is carboxylic acid lithium salt.
6. a kind of preparation method of lithium battery graphene conductive slurry according to claim 1, it is characterised in that：The carbon
Nanotube caliber be 10~50nm, 5~10nm of wall thickness, 1~6 μm of length.
7. a kind of preparation method of lithium battery graphene conductive slurry according to claim 1, it is characterised in that：The promotion
The grain size of agent is 2-5 microns.
8. a kind of lithium battery graphene conductive slurry, it is characterised in that by any one of the claim 1-7 lithium battery graphenes
The graphene conductive slurry that the preparation method of electrocondution slurry is prepared.
9. a kind of lithium battery graphene conductive slurry according to claim 8, it is characterised in that：For lithium battery anode activity
Material lithium manganate, LiFePO4, cobalt acid lithium or cobalt nickel lithium manganate ternary material conductive agent.
10. a kind of lithium battery graphene conductive slurry according to claim 8, it is characterised in that：It lives for cathode of lithium battery
Property material Delanium, carbosphere, native graphite or graphite/silicon conductive agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616820.2A CN106207094B (en) | 2016-08-01 | 2016-08-01 | A kind of lithium battery graphene conductive slurry and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610616820.2A CN106207094B (en) | 2016-08-01 | 2016-08-01 | A kind of lithium battery graphene conductive slurry and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106207094A CN106207094A (en) | 2016-12-07 |
| CN106207094B true CN106207094B (en) | 2018-07-03 |
Family
ID=57498418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610616820.2A Active CN106207094B (en) | 2016-08-01 | 2016-08-01 | A kind of lithium battery graphene conductive slurry and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106207094B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684377A (en) * | 2016-12-30 | 2017-05-17 | 珠海汉格能源科技有限公司 | Lithium cobalt oxide positive electrode slurry containing graphene composite powder and preparation method thereof |
| CN108793138A (en) * | 2017-04-26 | 2018-11-13 | 中国科学院理化技术研究所 | A kind of preparation method of functionalization graphene slurry |
| CN107098338B (en) * | 2017-06-08 | 2023-07-18 | 乌兰察布市大盛石墨新材料股份有限公司 | Graphene material, preparation method thereof and sagger for preparing graphene |
| CN107316978B (en) * | 2017-06-20 | 2020-04-17 | 成都新柯力化工科技有限公司 | Special graphene conductive paste for lithium battery and preparation method thereof |
| CN107689452A (en) * | 2017-09-04 | 2018-02-13 | 多凌新材料科技股份有限公司 | A kind of graphene composite conductive slurry, its preparation method and application |
| BR112020020763A2 (en) * | 2018-04-27 | 2021-01-19 | Dow Global Technologies Llc | ETHYL CELLULOSE AS A DISPERSANT FOR THE PRODUCTION OF LITHIUM ION BATTERY CATHOD |
| CA3097217A1 (en) | 2018-04-27 | 2019-10-31 | Dow Global Technologies Llc | Solvent systems for use in lithium ion battery production |
| CN108550856A (en) * | 2018-05-23 | 2018-09-18 | 山东希诚新材料科技有限公司 | Carbon nano tube/graphene composite conducting slurry and preparation method thereof |
| CN108470914A (en) * | 2018-06-05 | 2018-08-31 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | A kind of preparation method of graphene complex lithium electricity electrocondution slurry |
| CN109103454A (en) * | 2018-07-05 | 2018-12-28 | 何亚龙 | Lithium battery graphene conductive slurry and preparation method thereof |
| CN109167016A (en) * | 2018-09-05 | 2019-01-08 | 盐城市新能源化学储能与动力电源研究中心 | A kind of anode material for lithium-ion batteries and its preparation method and application |
| CN109192987A (en) * | 2018-10-12 | 2019-01-11 | 合肥国轩高科动力能源有限公司 | A kind of lithium battery graphene composite conductive agent and preparation method thereof |
| CN109884247A (en) * | 2019-01-30 | 2019-06-14 | 合肥国轩高科动力能源有限公司 | A kind of method of Fast Evaluation graphene composite conductive Stability of Slurry |
| CN110386597B (en) * | 2019-09-02 | 2022-09-23 | 石墨烯科技有限公司 | Equipment and method for large-scale production of thin-layer graphene |
| CN111048780A (en) * | 2019-12-18 | 2020-04-21 | 武汉低维材料研究院有限公司 | Graphene conductive agent for lithium ion battery and preparation method thereof |
| CN112371718A (en) * | 2020-10-22 | 2021-02-19 | 中国科学院合肥物质科学研究院 | Cd restoration based on graphite auxiliary primary battery2+Method for contaminating a medium |
| CN115084521A (en) * | 2022-06-17 | 2022-09-20 | 贵州旌麾科技有限公司 | Multi-element composite conductive agent for metal lithium battery and preparation method and application thereof |
| CN115069364A (en) * | 2022-06-18 | 2022-09-20 | 湖北冠毓新材料科技有限公司 | Method for improving grinding efficiency of carbon nanotube slurry |
| CN116799155B (en) * | 2023-06-27 | 2023-12-19 | 肇庆理士电源技术有限公司 | Dry electrode manufacturing method of negative electrode artificial graphite material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857221A (en) * | 2010-05-21 | 2010-10-13 | 哈尔滨工业大学 | Method for preparing graphene compounds and graphene oxide compounds with high efficiency |
| CN101993065A (en) * | 2010-12-17 | 2011-03-30 | 中国科学院上海微系统与信息技术研究所 | Method for preparing graphene powder |
-
2016
- 2016-08-01 CN CN201610616820.2A patent/CN106207094B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857221A (en) * | 2010-05-21 | 2010-10-13 | 哈尔滨工业大学 | Method for preparing graphene compounds and graphene oxide compounds with high efficiency |
| CN101993065A (en) * | 2010-12-17 | 2011-03-30 | 中国科学院上海微系统与信息技术研究所 | Method for preparing graphene powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106207094A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106207094B (en) | A kind of lithium battery graphene conductive slurry and preparation method thereof | |
| KR102239750B1 (en) | Microcapsule type silicon-carbon composite negative electrode material, and manufacturing method and use thereof | |
| CN103474667B (en) | A kind of silicon-carbon composite anode material for lithium ion battery and preparation method thereof | |
| CN107785541A (en) | A kind of Silicon-carbon composite material for lithium ion battery and preparation method thereof | |
| CN107634208A (en) | A kind of preparation method of lithium ion battery silicon-carbon cathode material | |
| CN103367726B (en) | Si-C composite material and preparation method thereof, lithium ion battery | |
| CN111653738B (en) | Silicon-carbon negative electrode material of lithium ion battery and preparation method thereof | |
| CN103579579A (en) | Lithium ion battery aqueous anode slurry and preparation method thereof | |
| CN106684329A (en) | Dispersion method for positive electrode slurry of lithium ion battery | |
| CN104752696A (en) | Preparation method of graphene-based silicon and carbon composite negative electrode material | |
| CN107565112A (en) | A kind of preparation method of graphene coated lithium ion secondary battery anode material | |
| CN103618074B (en) | Silicon-carbon composite cathode material of lithium ion battery and preparation method thereof | |
| WO2016095559A1 (en) | Method for dispersing composite conductive agent in electrode slurry of lithium ion capacitor | |
| CN104638252A (en) | Silicon composited negative electrode material, preparation method of silicon composited negative electrode material and lithium ion battery | |
| CN107464929B (en) | Preparation method of nickel cobalt lithium manganate cathode material, lithium ion battery cathode material and lithium ion battery | |
| CN110400927A (en) | A kind of silicon-carbon composite anode material for lithium ion battery and preparation method thereof | |
| CN106711432B (en) | A kind of tridimensional network MoO2Nano material and its preparation and application | |
| CN109411713A (en) | The machinery of the modified composite material of siliceous substrates material is total to method for coating, modified composite material and lithium ion battery | |
| CN106340653B (en) | A kind of accordion graphene composite conductive agent and preparation method | |
| CN110350161B (en) | Preparation method of silicon-carbon negative electrode precursor | |
| CN107611375A (en) | A kind of preparation method of lithium ion battery anode glue size | |
| CN104425802B (en) | Silicon based composite material, preparation method, using and its lithium ion battery obtained | |
| CN105226253B (en) | A kind of silicon nanoparticle-graphite flake-carbon nano tube compound material and the preparation method and application thereof | |
| TWI622213B (en) | Preparation method of lithium ion battery anode slurry | |
| CN100383037C (en) | Carbon material and nano silicon composite materials and method for preparing same and use thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Xiaolong Inventor after: Qiao Liang Inventor after: Zhao Jiaqi Inventor before: Chen Qing Inventor before: Zeng Juntang |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180515 Address after: 201600 No. 101, room 68, No. 68, Chuang Chuang Road, Shanghai Applicant after: SHANGHAI YINJIANG TECHNOLOGY CO.,LTD. Address before: 610091 Donghai Road, Jiao long industrial port, Qingyang District, Chengdu, Sichuan 4 Applicant before: CHENDU NEW KELI CHEMICAL SCIENCE Co.,Ltd. CHINA |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A kind of lithium battery graphene conductive paste and preparation method thereof Effective date of registration: 20220831 Granted publication date: 20180703 Pledgee: Industrial Bank Co.,Ltd. Shanghai Minhang sub branch Pledgor: SHANGHAI YINJIANG TECHNOLOGY CO.,LTD. Registration number: Y2022310000224 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230912 Granted publication date: 20180703 Pledgee: Industrial Bank Co.,Ltd. Shanghai Minhang sub branch Pledgor: SHANGHAI YINJIANG TECHNOLOGY CO.,LTD. Registration number: Y2022310000224 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A graphene conductive paste for lithium batteries and its preparation method Effective date of registration: 20230914 Granted publication date: 20180703 Pledgee: Industrial Bank Co.,Ltd. Shanghai Minhang sub branch Pledgor: SHANGHAI YINJIANG TECHNOLOGY CO.,LTD. Registration number: Y2023310000548 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |