CN107293732B - A kind of lithium ion power battery composite cathode material and preparation method thereof - Google Patents
A kind of lithium ion power battery composite cathode material and preparation method thereof Download PDFInfo
- Publication number
- CN107293732B CN107293732B CN201710663954.4A CN201710663954A CN107293732B CN 107293732 B CN107293732 B CN 107293732B CN 201710663954 A CN201710663954 A CN 201710663954A CN 107293732 B CN107293732 B CN 107293732B
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- power battery
- lithium
- composite cathode
- ion power
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 32
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 239000010406 cathode material Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 26
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 claims abstract description 21
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 claims abstract description 21
- 229930016911 cinnamic acid Natural products 0.000 claims abstract description 21
- 235000013985 cinnamic acid Nutrition 0.000 claims abstract description 21
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 20
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 20
- 239000011149 active material Substances 0.000 claims abstract description 18
- 230000004048 modification Effects 0.000 claims abstract description 13
- 238000012986 modification Methods 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 239000007773 negative electrode material Substances 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 229920000058 polyacrylate Polymers 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 13
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 12
- 230000001603 reducing effect Effects 0.000 claims description 10
- 150000001851 cinnamic acid derivatives Chemical class 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000003786 synthesis reaction Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 4
- 229910003002 lithium salt Inorganic materials 0.000 claims description 2
- 159000000002 lithium salts Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 150000003608 titanium Chemical class 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- XHFVDZNDZCNTLT-UHFFFAOYSA-H chromium(3+);tricarbonate Chemical compound [Cr+3].[Cr+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O XHFVDZNDZCNTLT-UHFFFAOYSA-H 0.000 description 1
- HIYNGBUQYVBFLA-UHFFFAOYSA-D cobalt(2+);dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Co+2].[Co+2].[Co+2].[Co+2].[Co+2].[O-]C([O-])=O.[O-]C([O-])=O HIYNGBUQYVBFLA-UHFFFAOYSA-D 0.000 description 1
- 229910000001 cobalt(II) carbonate Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010792 warming Methods 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—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
- H01M4/621—Binders
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to technical field of lithium ion, and in particular to a kind of lithium ion power battery composite cathode material and preparation method thereof；The negative electrode material is made of binder cladding lithium active material, and the binder is graft modification cinnamic acid, and the lithium active material is carbon nanotube/Li4Ti5‑0.75XMXO12；The M is at least one of Ga, Cr, Co；Lithium ion power battery composite cathode material provided by the invention can improve the security feature of battery, and can improve the high rate cyclic characteristic of battery.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of lithium ion power battery composite cathode material and
Preparation method.
Background technique
Currently, being widely used in mobile phone using lithium metal as the lithium-ion-power cell of battery work cathode, having shone
In the electronic equipments such as camera, due to the advantages such as high voltage, light weight, long-life, pollution-free, low hidden danger, lithium ion power
The use scope of battery just gradually expands.As the negative electrode material of one of the big composition material of lithium battery four, battery is being improved
Important function is played in terms of capacity and cycle performance.In the prior art, using lithium metal as lithium ion power cell cathode material
When material, there is a problem of that cycle performance is bad, and negative electrode material can undergo biggish volume change in cyclic process repeatedly,
The problems such as when storing a large amount of lithium, volume is expandable to original several times, be easy to cause electrode dusting.
Summary of the invention
The primary purpose of the present invention is that providing a kind of lithium ion power battery composite cathode material, battery can be improved
Security feature, and the high rate cyclic characteristic of battery can be improved.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of lithium ion power battery composite cathode material,
It is made of binder cladding lithium active material, the binder is graft modification cinnamic acid, the lithium active material
For carbon nanotube/Li4Ti5-0.75XMXO12；The M is at least one of Ga, Cr, Co.
It is another object of the present invention to provide a kind of lithium ion power battery composite cathode materials as described above
Preparation method includes the following steps:
(1) in strong reducing property atmosphere, titanium salt, lithium salts, M salt and carbon nanotube is mixed, is placed in aqueous solution and carries out
Hydro-thermal reaction, synthesis obtain carbon nanotube/Li4Ti5-0.75XMXO12；
(2) by carbon nanotube/Li4Ti5-0.75XMXO12It is placed in reducing atmosphere and calcines, obtain lithium active material；
(3) lithium active material is rolled into negative electrode active material layer, is then coated with and changes with a thickness of the grafting of 10-20um
Property cinnamic acid, obtains lithium ion power battery composite cathode material.
In above-mentioned steps, the graft modification cinnamic acid is prepared by the following method: by cinnamic acid and acetic acid, the third two
Acid-mixed is closed, and is stirred to react under the conditions of 130-150 DEG C 2-3 hour, holding temperature constant state, with the rate of addition of 2-5g/s to above-mentioned
Polyacrylate is added in mixed liquor, to get the modified cinnamic acid of polyacrylate grafting after reaction 1-2 hours.
In graft modification cinnamic acid material therefor, the content of each substance is very big on the influence of the adhesive property of binder, when each
Not at that time, then will lead to can not effectively be modified or the intensity of binder is inadequate the adding proportion of substance, can not be to lithium composite reactive
Substance is effectively coated, and reduces the security performance of cathode.Preferably, the cinnamic acid, acetic acid, malonic acid, polypropylene
The adding proportion of acid esters is 5.5-6:2-3:1:4-5.
The beneficial effect that above-mentioned technical proposal generates is:
(1) it uses graft modification cinnamic acid to have two for the effect of binder, one is the dosage of binder can be reduced, mentions
The specific gravity of active material in high cathode to improve the energy density of electrode, and then improves the chemical property of battery；The second is
Cinnamic acid after graft modification has extremely strong viscosity, can be by improving the mechanical strength of cathode, and then improves battery
High temperature resistance and safety.
(2) by the way that lithium titanate body phase can be activated to metatitanic acid lithium doping, surface-active is improved, cathode voltage is reduced, improves electricity
The energy density of pole.It is compound using carbon nanotube and doped lithium titanate progress, the conductivity of lithium titanate material can not only be improved, also
It can be effectively prevented intergranular reunion, contact internal resistance is reduced, improve the high rate performance of battery.
(3) cathode of the readily available coulombic efficiency height of preparation energy, good rate capability and stable circulation is carried out using hydro-thermal method
Material.Material obtained is after high-temperature calcination, narrower particle size distribution, and particle surface more evenly, can improve the electrification of negative electrode material
Learn performance.
Specific embodiment
Below by 3 embodiments, the present invention is further disclosed.
Embodiment 1: the preparation of lithium ion power battery composite cathode material
(1) cinnamic acid and acetic acid, malonic acid are mixed with the adding proportion of 5.8:2.5:1:4.2, is stirred under the conditions of 140 DEG C
Reaction 2.5 hours is mixed, temperature constant state is kept, polyacrylate is added into above-mentioned mixed liquor with the rate of addition of 4g/s, is reacted
After 1.5 hours, obtaining average molecular weight is 2.8 × 104The modified cinnamic acid of polyacrylate grafting；
(2) in strong reducing property atmosphere, by 0.3mol titanium hydroxide, 0.4mol lithium carbonate, 0.3molGaSO4And
The mixing of 0.025mol carbon nanotube, is placed in 100ml aqueous solution and carries out hydro-thermal reaction, and hydrothermal temperature is 120-200 DEG C,
Reaction time is 2-3h, reaction pressure 100MPa, and synthesis obtains carbon nanotube/Li4Ti2.75Ga3O12；
(3) by carbon nanotube/Li4Ti2.75Ga3O12It is placed in reducing atmosphere and calcines, calcination temperature is 400 DEG C, when calcining
Between be 3 hours, obtain lithium active material；
(4) lithium active material is rolled into negative electrode active material layer, is then coated with the graft modification with a thickness of 15um
Cinnamic acid obtains lithium ion power battery composite cathode material, the weight of graft modification cinnamic acid in the composite negative pole material
Than being 2.0%.
Embodiment 2: the preparation of lithium ion power battery composite cathode material
(1) cinnamic acid and acetic acid, malonic acid are mixed with the adding proportion of 5.5:3:1:4, is stirred under the conditions of 150 DEG C anti-
It answers 2 hours, keeps temperature constant state, polyacrylate is added into above-mentioned mixed liquor with the rate of addition of 5g/s, is reacted 1 hour
Afterwards, obtaining average molecular weight is 8.5 × 104The modified cinnamic acid of polyacrylate grafting；
(2) in strong reducing property atmosphere, by 0.35mol titanium hydroxide, 0.4mol lithium carbonate, 0.2mol chromium carbonate and
The mixing of 0.02mol carbon nanotube, is placed in 100ml aqueous solution and carries out hydro-thermal reaction, and hydrothermal temperature is 120 DEG C, reaction
Time is 3h, reaction pressure 100MPa, and synthesis obtains carbon nanotube/Li4Ti3.5Cr2O12；
(3) by carbon nanotube/Li4Ti3.5Cr2O12It is placed in reducing atmosphere and calcines, calcination temperature is 300 DEG C, when calcining
Between be 5 hours, obtain lithium active material；
(4) lithium active material is rolled into negative electrode active material layer, is then coated with the graft modification with a thickness of 10um
Cinnamic acid obtains lithium ion power battery composite cathode material, the weight of graft modification cinnamic acid in the composite negative pole material
Than being 0.5%.
Embodiment 3: the preparation of lithium ion power battery composite cathode material
(1) cinnamic acid and acetic acid, malonic acid are mixed with the adding proportion of 5.6:2:1:5, is stirred under the conditions of 130 DEG C anti-
It answers 3 hours, keeps temperature constant state, polyacrylate is added into above-mentioned mixed liquor with the rate of addition of 2g/s, is reacted 2 hours
Afterwards, obtaining average molecular weight is 4.2 × 104The modified cinnamic acid of polyacrylate grafting；
(2) in strong reducing property atmosphere, by 0.2mol titanium hydroxide, 0.4mol lithium carbonate, 0.4mol basic cobaltous carbonate and
The mixing of 0.05mol carbon nanotube, is placed in 100ml aqueous solution and carries out hydro-thermal reaction, and hydrothermal temperature is 200 DEG C, reaction
Time is 2h, reaction pressure 100MPa, and synthesis obtains carbon nanotube/Li4Ti2Co4O12；
(3) by carbon nanotube/Li4Ti2Co4O12It is placed in reducing atmosphere and calcines, calcination temperature is 450 DEG C, calcination time
It is 2 hours, obtains lithium active material；
(4) lithium active material is rolled into negative electrode active material layer, is then coated with the graft modification with a thickness of 20um
Cinnamic acid obtains lithium ion power battery composite cathode material, the weight of graft modification cinnamic acid in the composite negative pole material
Than being 3.0%.
Comparative example 1:
According to the method for embodiment 1, unlike, in the preparation, binder is not coated.
Comparative example 2:
According to the method for embodiment 1, it unlike, is prepared using sol-gal process.
Comparative example 3:
According to the method for embodiment 1, unlike, doped chemical is free of, negative electrode material is the metatitanic acid of binder cladding
Lithium.
The negative electrode material being prepared in embodiment 1-3 and comparative example 1-3 is made into cathode, and corresponding positive structure together
At battery, experiment is performed the following performance tests:
1, external short circuit is tested: using IC constant current constant voltage to battery full charging, conducting wire with total resistance value less than 100m Ω is by lithium
Electronic cell positive and negative anodes are directly connected to short circuit, and lithium ion battery is not on fire, does not explode for qualification；
2, hot tank is tested: battery being placed in hot tank, is warming up to 150 DEG C with the rate of 5 DEG C/min, and keep the temperature 30min, lithium
Ion battery is on fire, to not exploding for qualification；
3, charge and discharge cycles, a certain circulation cycle life of lithium ion battery appraisal procedure: are carried out to battery with the multiplying power of 1C
IC discharge capacity and the ratio between maximum discharge capacity be referred to as the capacity retention ratio after a certain circulation of lithium ion battery, lithium-ion electric
Circulating cycle number when tankage conservation rate is 80% is as the index for measuring cycle performance.
Test result is as follows table:
Table 1: security performance percent of pass contrast table
| Cathode type | Short-circuit test | Hot tank test |
| Embodiment 1 | 100% | 100% |
| Embodiment 2 | 100% | 100% |
| Embodiment 3 | 100% | 100% |
| Comparative example 1 | 89% | 84% |
| Comparative example 2 | 94% | 92% |
| Comparative example 3 | 83% | 80% |
Table 2: electrical property contrast table:
| Cathode type | IC recycles 80% conservation rate |
| Embodiment 1 | 2300 weeks |
| Embodiment 2 | 2300 weeks |
| Embodiment 3 | 2300 weeks |
| Comparative example 1 | 1800 weeks |
| Comparative example 2 | 1600 weeks |
| Comparative example 3 | 1400 weeks |
As seen from the above table, negative electrode material safety in utilization provided by the invention is good, and circulating battery multiplying power is high.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of lithium ion power battery composite cathode material, which is characterized in that coat lithium active material structure by binder
Be the modified cinnamic acid of polyacrylate grafting at, the binder, the lithium active material be carbon nanotube/
Li4Ti5-0.75XMXO12, x 2,3,4；The M is at least one of Ga, Cr, Co；
The modified cinnamic acid of the polyacrylate grafting is prepared by the following method: cinnamic acid and acetic acid, malonic acid mixed,
It is stirred to react under the conditions of 130-150 DEG C 2-3 hours, keeps temperature constant state, with the rate of addition of 2-5g/s to above-mentioned mixed liquor
Middle addition polyacrylate, to get the modified cinnamic acid of polyacrylate grafting after reaction 1-2 hours；The cinnamic acid, acetic acid,
Malonic acid, polyacrylate adding proportion be 5.5-6:2-3:1:4-5.
2. lithium ion power battery composite cathode material as described in claim 1, which is characterized in that the polyacrylate connects
The modified cinnamic acid of branch and lithium active material are formed by 0.5%-3.0%:97%-99.5% weight ratio.
3. lithium ion power battery composite cathode material as described in claim 1, which is characterized in that the carbon nanotube with
Li4Ti5-0.75XMXO12It is formed by the weight ratio of 1-2:3-5.
4. lithium ion power battery composite cathode material as described in claim 1, which is characterized in that the polyacrylate connects
The average molecular weight of the modified cinnamic acid of branch is 3 × 103-1×105。
5. a kind of preparation method of such as lithium ion power battery composite cathode material of any of claims 1-4,
It is characterized in that, includes the following steps:
(1) in strong reducing property atmosphere, titanium salt, lithium salts, M salt and carbon nanotube is mixed, is placed in aqueous solution and carries out hydro-thermal
Reaction, synthesis obtain carbon nanotube/Li4Ti5-0.75XMXO12；
(2) by carbon nanotube/Li4Ti5-0.75XMXO12It is placed in reducing atmosphere and calcines, obtain lithium active material；
(3) lithium active material is rolled into negative electrode active material layer, is then coated with the polyacrylate with a thickness of 10-20um
Graft modification cinnamic acid, obtains lithium ion power battery composite cathode material.
6. the preparation method of lithium ion power battery composite cathode material as claimed in claim 5, which is characterized in that the step
Suddenly the hydrothermal temperature in (1) is 120-200 DEG C, reaction time 2-3h, reaction pressure 100MPa.
7. the preparation method of lithium ion power battery composite cathode material as claimed in claim 5, which is characterized in that the step
Suddenly the calcination time in (2) is 2-5 hours, and calcination temperature is 300 DEG C -450 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710663954.4A CN107293732B (en) | 2017-08-06 | 2017-08-06 | A kind of lithium ion power battery composite cathode material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710663954.4A CN107293732B (en) | 2017-08-06 | 2017-08-06 | A kind of lithium ion power battery composite cathode material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107293732A CN107293732A (en) | 2017-10-24 |
| CN107293732B true CN107293732B (en) | 2019-08-27 |
Family
ID=60104521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710663954.4A Active CN107293732B (en) | 2017-08-06 | 2017-08-06 | A kind of lithium ion power battery composite cathode material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107293732B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117050693B (en) * | 2023-08-15 | 2024-11-05 | 深圳市研一新材料有限责任公司 | Water-based lithium-conducting binder and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841017A (en) * | 2009-03-16 | 2010-09-22 | 中国科学院成都有机化学有限公司 | Lithium titanate/carbon/carbon nano tube composite electrode material and preparation method thereof |
| CN104966822A (en) * | 2015-06-16 | 2015-10-07 | 东莞市翔丰华电池材料有限公司 | Multilayer coated lithium titanate cathode material of lithium ion battery and preparation method of multilayer coated lithium titanate cathode material |
| US9343745B1 (en) * | 2013-02-07 | 2016-05-17 | A123 Systems Llc | Surface passivation of active material particles for use in electrochemical cells |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9779883B2 (en) * | 2011-09-07 | 2017-10-03 | Nanotek Instruments, Inc. | Partially surface-mediated lithium ion-exchanging cells and method for operating same |
-
2017
- 2017-08-06 CN CN201710663954.4A patent/CN107293732B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841017A (en) * | 2009-03-16 | 2010-09-22 | 中国科学院成都有机化学有限公司 | Lithium titanate/carbon/carbon nano tube composite electrode material and preparation method thereof |
| US9343745B1 (en) * | 2013-02-07 | 2016-05-17 | A123 Systems Llc | Surface passivation of active material particles for use in electrochemical cells |
| CN104966822A (en) * | 2015-06-16 | 2015-10-07 | 东莞市翔丰华电池材料有限公司 | Multilayer coated lithium titanate cathode material of lithium ion battery and preparation method of multilayer coated lithium titanate cathode material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107293732A (en) | 2017-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108321366A (en) | Coating method for improving electrochemical performance of high-nickel ternary nickel-cobalt-manganese positive electrode material | |
| CN102376947A (en) | A kind of preparation method of aluminum oxide coated nano-lithium titanate composite material | |
| CN106784726B (en) | Lithium vanadyl phosphate modified lithium-rich manganese-based layered lithium ion battery cathode material and preparation method thereof | |
| CN107195485A (en) | A kind of preparation method of flower-shaped CoAl double-metal hydroxides electrode material | |
| CN114530572B (en) | Composite modified negative electrode for water-based metal battery | |
| CN105742607A (en) | Method for improving initial coulomb efficiency of lithium-rich cathode material | |
| CN105185978A (en) | Manganese-containing oxygen compound used as negative active substance, and preparation method and use thereof | |
| CN110828799A (en) | A kind of MnOx@C cathode material for aqueous zinc ion battery and preparation method thereof | |
| CN110854365A (en) | Preparation method of polyaniline/carbon composite material for anode material of water-based zinc-ion battery | |
| CN107785555A (en) | A kind of lithium ion battery, modification lithium-ion battery anode material and preparation method thereof | |
| CN107742712B (en) | A kind of conductive polymer coated doped lithium ion battery positive electrode material and its synthesis method | |
| CN110061226A (en) | The positive electrode of sub- titanium-oxide-coated, the preparation method of positive electrode and lithium ion battery | |
| CN108598382A (en) | A kind of method of watery fusion coated lithium ion battery positive electrode | |
| CN106992290A (en) | High specific energy anode composite material and preparation method thereof, lithium ion battery | |
| CN107706400B (en) | Nano-alumina-coated and surface oxygen vacancy-modified lithium-rich material and preparation method thereof | |
| CN107293732B (en) | A kind of lithium ion power battery composite cathode material and preparation method thereof | |
| CN110350173B (en) | Lithium-sulfur soft package battery and preparation method thereof | |
| CN107317023A (en) | A kind of high potential positive electrode, its preparation method and its application of chromium doping vario-property | |
| CN108075131A (en) | One kind is based on NayNixMn1-xO2The water system energy-storage battery of structure richness sodium lamellar compound anode | |
| CN117790932A (en) | An aqueous zinc-ion battery electrolyte that can inhibit zinc dendrites and corrosion, its preparation method and its application | |
| CN117105285A (en) | A kind of doped sodium-ion battery cathode material precursor and preparation method thereof | |
| CN109616665A (en) | Preparation method for reducing residual alkali of nickel cobalt lithium manganate ternary positive electrode material, product and application thereof | |
| CN108511812A (en) | A kind of mixing water system lithium cell electrolyte solution and preparation method | |
| CN105024061B (en) | A kind of preparation method of water system sodium-ion battery spinel-type manganese-base oxide material | |
| CN106025233B (en) | A kind of preparation method of lithium ion battery |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190723 Address after: 214400 Building B11, No. 2 Dongsheng West Road, Jiangyin City, Wuxi City, Jiangsu Province Applicant after: Linkage Tianyi New Energy Co., Ltd. Address before: Room 307, Building A, Lugu Business Center, 199 Lulong Road, Changsha High-tech Development Zone, Changsha City, Hunan Province Applicant before: Changsha small Amperex Technology Limited |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |