CN112290023A - Polypyrrole-doped power battery material and preparation method thereof - Google Patents
Polypyrrole-doped power battery material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims description 8
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims abstract description 38
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 33
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims abstract description 33
- 239000003999 initiator Substances 0.000 claims abstract description 22
- 239000004203 carnauba wax Substances 0.000 claims abstract description 18
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 229910021538 borax Inorganic materials 0.000 claims abstract description 9
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 9
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 3
- 229940116007 ferrous phosphate Drugs 0.000 claims abstract description 3
- 229910000155 iron(II) phosphate Inorganic materials 0.000 claims abstract description 3
- SDEKDNPYZOERBP-UHFFFAOYSA-H iron(ii) phosphate Chemical compound [Fe+2].[Fe+2].[Fe+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SDEKDNPYZOERBP-UHFFFAOYSA-H 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 28
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 16
- 229920000128 polypyrrole Polymers 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 235000013869 carnauba wax Nutrition 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 12
- 229910000077 silane Inorganic materials 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000004254 Ammonium phosphate Substances 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 8
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 8
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000010406 cathode material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 229910001437 manganese ion Inorganic materials 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0605—Polycondensates containing five-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0611—Polycondensates containing five-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring, e.g. polypyrroles
-
- 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
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- 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
- H01M4/622—Binders being polymers
-
- 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
-
- 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
Abstract
The invention discloses a polypyrrole-doped power battery material which is prepared from the following raw materials in parts by weight: 40-50 parts of pyrrole, 1-1.4 parts of initiator, 75-130 parts of lithium hydroxide, 1-2 parts of palm wax, kh 5502-4 parts of silane coupling agent, 2-4 parts of borax, 3-5 parts of acetic acid and 400-plus 500 parts of ammonium ferrous phosphate.
Description
Technical Field
The invention belongs to the field of battery materials, and particularly relates to a polypyrrole-doped power battery material and a preparation method thereof.
Background
The lithium ion power battery is the most potential vehicle-mounted battery recognized at home and abroad at present and mainly comprises a positive electrode material, a negative electrode material, a diaphragm, electrolyte and the like; the anode material is an important component of the lithium ion battery and is also a key factor for determining the performance of the lithium ion battery; therefore, in the aspects of resources, environmental protection and safety performance, the search for an ideal electrode active material of a lithium ion battery is still the first problem to be solved by international energy material workers;
currently, lithium ion battery positive electrode materials which are commercialized mainly include lithium cobaltate, lithium manganate and lithium iron phosphate; lithium cobaltate is a cathode material widely applied to small lithium ion batteries at present, but cobalt is toxic, the resource reserve is limited, the price is high, and the battery assembled by the lithium cobaltate material as the cathode material has poor safety and thermal stability, can generate oxygen at high temperature, and cannot meet the technical requirements of power batteries; although lithium manganate is low in price, environment-friendly, safe, good in rate performance and safety performance, the lithium manganate is not high in theoretical capacity, poor in cycle performance, thermal stability and high-temperature performance, and has the biggest problem of poor cycle performance in application, particularly, trivalent manganese ions in materials and divalent manganese ions formed on the surfaces of particles during high-rate discharge at high temperature, so that the materials are obviously dissolved in electrolyte, the structure of the lithium manganate is finally damaged, and the cycle performance of the materials is also reduced; therefore, the search for a lithium ion power battery material with good conductive stability and excellent comprehensive performance is very important for the development of modernization.
Disclosure of Invention
The invention aims to provide a polypyrrole-doped power battery material and a preparation method thereof, aiming at the defects and the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a polypyrrole-doped power battery material is composed of the following raw materials in parts by weight:
40-50 parts of pyrrole, 1-1.4 parts of initiator, 75-130 parts of lithium hydroxide, 1-2 parts of palm wax, 2-4 parts of silane coupling agent kh5502, 2-4 parts of borax, 3-5 parts of acetic acid and 400-one of ammonium ferrous phosphate.
The initiator is one of ammonium persulfate, sodium persulfate and potassium persulfate.
A preparation method of a polypyrrole-doped power battery material comprises the following steps:
(1) adding an initiator into deionized water with the weight of 20-30 times of that of the initiator, and uniformly stirring;
(2) mixing acetic acid and pyrrole, adding into chloroform with the weight of 3-5 times of the weight of the mixture, performing ultrasonic treatment for 1-2 hours, and distilling to remove chloroform to obtain acidified pyrrole;
(3) adding carnauba wax into absolute ethyl alcohol with the weight 5-7 times of that of the carnauba wax, sending the carnauba wax into a constant-temperature oil bath with the temperature of 140-150 ℃, preserving heat and stirring for 20-30 minutes, discharging, adding a silane coupling agent kh550 and borax, stirring to normal temperature, and distilling to remove the ethyl alcohol to obtain a silane binder;
(4) mixing the acidified pyrrole with ferrous ammonium phosphate, adding the mixed solution into deionized water which is 10-17 times of the weight of the mixed solution, uniformly stirring, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to be 60-70 ℃, adding the initiator aqueous solution, keeping the temperature, stirring for 4-5 hours, discharging and cooling to obtain a polypyrrole doped solution;
(5) adding lithium hydroxide into the polypyrrole doping solution, uniformly stirring, adding a silane binding agent, keeping the temperature and stirring for 1-2 hours at 65-70 ℃, sending into a sintering furnace, introducing inert gas, calcining for 10-20 hours at 600-750 ℃, discharging and cooling to obtain the polypyrrole doping power battery material.
And (3) the inert gas in the step (5) is nitrogen or argon.
The invention has the advantages that:
in the invention, firstly, the pyrrole monomer is treated by acetic acid, then the mixture is blended with ferrous ammonium phosphate, and the polymerization is carried out under the action of an initiator to obtain a polypyrrole doping solution, in the invention, silane coupling agent kh550 is used for treating palm wax, then the mixture is blended with the polypyrrole doping solution, lithium hydroxide is added in the mixture, and in the reaction process of lithium hydroxide and ferrous ammonium phosphate, the acetic acid and the amino group of silane are also reacted, so that the bonding strength of a silane bonding agent can be improved, the dispersion performance of pyrrole in lithium iron phosphate can be improved, the point cycle stability of the finished battery material can be improved, and the specific capacity can be enhanced.
Detailed Description
Example 1
A polypyrrole-doped power battery material is composed of the following raw materials in parts by weight:
50 parts of pyrrole, 1.4 parts of an initiator, 130 parts of lithium hydroxide, 2 parts of palm wax, a silane coupling agent kh5504, 4 parts of borax, 5 parts of acetic acid and 500 parts of ferrous ammonium phosphate.
The initiator is potassium persulfate.
A preparation method of a polypyrrole-doped power battery material comprises the following steps:
(1) adding an initiator into deionized water with the weight 30 times that of the initiator, and uniformly stirring;
(2) mixing acetic acid and pyrrole, adding into chloroform with the weight 5 times of the weight of the mixture, performing ultrasonic treatment for 2 hours, and distilling to remove the chloroform to obtain acidified pyrrole;
(3) adding carnauba wax into absolute ethyl alcohol with the weight 7 times of the carnauba wax, sending the carnauba wax into a constant-temperature oil bath at the temperature of 150 ℃, preserving heat and stirring for 30 minutes, discharging, adding silane coupling agent kh550 and borax, stirring to normal temperature, and distilling to remove the ethyl alcohol to obtain a silane binder;
(4) mixing the acidified pyrrole with ferrous ammonium phosphate, adding the mixture into deionized water 17 times the weight of the mixture, uniformly stirring, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 70 ℃, adding the initiator aqueous solution, keeping the temperature and stirring for 5 hours, discharging and cooling to obtain a polypyrrole doping solution;
(5) adding lithium hydroxide into the polypyrrole doping solution, uniformly stirring, adding a silane binding agent, keeping the temperature at 70 ℃, stirring for 2 hours, sending into a sintering furnace, introducing argon, calcining for 20 hours at 750 ℃, discharging and cooling to obtain the polypyrrole doping power battery material.
Example 2
A polypyrrole-doped power battery material is composed of the following raw materials in parts by weight:
pyrrole 40, an initiator 1, lithium hydroxide 75, carnauba wax 1, a silane coupling agent kh5502, borax 2, acetic acid 3 and ferrous ammonium phosphate 400.
The initiator is ammonium persulfate.
A preparation method of a polypyrrole-doped power battery material comprises the following steps:
(1) adding an initiator into deionized water with the weight being 20 times of that of the initiator, and uniformly stirring;
(2) mixing acetic acid and pyrrole, adding into chloroform with the weight of 3 times of the weight of the mixture, performing ultrasonic treatment for 1 hour, and distilling to remove the chloroform to obtain acidified pyrrole;
(3) adding carnauba wax into absolute ethyl alcohol with the weight 5 times of that of the carnauba wax, sending the carnauba wax into a constant-temperature oil bath at 140 ℃, preserving heat and stirring for 20 minutes, discharging, adding silane coupling agent kh550 and borax, stirring to normal temperature, and distilling to remove the ethyl alcohol to obtain a silane binder;
(4) mixing the acidified pyrrole with ferrous ammonium phosphate, adding the mixed solution into deionized water which is 10-17 times of the weight of the mixed solution, uniformly stirring, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 60 ℃, adding the initiator aqueous solution, keeping the temperature and stirring for 4 hours, discharging and cooling to obtain a polypyrrole doped solution;
(5) adding lithium hydroxide into the polypyrrole doping solution, uniformly stirring, adding a silane binding agent, keeping the temperature at 65 ℃ and stirring for 1 hour, sending into a sintering furnace, introducing nitrogen, calcining at 600 ℃ for 10 hours, discharging and cooling to obtain the polypyrrole doping power battery material.
And (3) performance testing:
the polypyrrole-doped power cell material of example 1;
apparent density: 1.36g/cm3；
Tap density: 2.46g/cm3；
Specific capacity (25 ℃, 1C, vs li, mAh/g) 130.5;
after 10 times of circulation, the specific capacity is 119.8 mAh/g;
the polypyrrole-doped power cell material of example 2;
apparent density: 1.38g/cm3；
Tap density: 2.49g/cm3；
The specific capacity (25 ℃, 1C, vs li, mAh/g) is 124.8;
after 10 times of circulation, the specific capacity is 116.9 mAh/g.
Claims (4)
1. The polypyrrole-doped power battery material is characterized by being prepared from the following raw materials in parts by weight:
40-50 parts of pyrrole, 1-1.4 parts of initiator, 75-130 parts of lithium hydroxide, 1-2 parts of palm wax, 2-4 parts of silane coupling agent kh5502, 2-4 parts of borax, 3-5 parts of acetic acid and 400-one of ammonium ferrous phosphate.
2. The polypyrrole-doped power cell material of claim 1, wherein the initiator is one of ammonium persulfate, sodium persulfate and potassium persulfate.
3. The preparation method of the polypyrrole doped power cell material according to the claim 1, which is characterized by comprising the following steps:
(1) adding an initiator into deionized water with the weight of 20-30 times of that of the initiator, and uniformly stirring;
(2) mixing acetic acid and pyrrole, adding into chloroform with the weight of 3-5 times of the weight of the mixture, performing ultrasonic treatment for 1-2 hours, and distilling to remove chloroform to obtain acidified pyrrole;
(3) adding carnauba wax into absolute ethyl alcohol with the weight 5-7 times of that of the carnauba wax, sending the carnauba wax into a constant-temperature oil bath with the temperature of 140-150 ℃, preserving heat and stirring for 20-30 minutes, discharging, adding a silane coupling agent kh550 and borax, stirring to normal temperature, and distilling to remove the ethyl alcohol to obtain a silane binder;
(4) mixing the acidified pyrrole with ferrous ammonium phosphate, adding the mixed solution into deionized water which is 10-17 times of the weight of the mixed solution, uniformly stirring, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to be 60-70 ℃, adding the initiator aqueous solution, keeping the temperature, stirring for 4-5 hours, discharging and cooling to obtain a polypyrrole doped solution;
(5) adding lithium hydroxide into the polypyrrole doping solution, uniformly stirring, adding a silane binding agent, keeping the temperature and stirring for 1-2 hours at 65-70 ℃, sending into a sintering furnace, introducing inert gas, calcining for 10-20 hours at 600-750 ℃, discharging and cooling to obtain the polypyrrole doping power battery material.
4. The method for preparing a polypyrrole-doped power cell material according to claim 3, wherein the inert gas in step (5) is nitrogen or argon.
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| CN102185140A (en) * | 2011-03-31 | 2011-09-14 | 中国科学院过程工程研究所 | Preparation method of nano-network conductive polymer coated lithium iron phosphate anode material |
| CN104009232A (en) * | 2014-06-10 | 2014-08-27 | 湖北工程学院 | Preparation method of lithium iron phosphate composite anode material |
| CN104638242A (en) * | 2015-02-06 | 2015-05-20 | 重庆特瑞电池材料股份有限公司 | Method for synthesizing lithium ion battery cathode material lithium iron phosphate through in situ polymerizing and cladding |
| CN108987748A (en) * | 2018-07-26 | 2018-12-11 | 戚明海 | A kind of lithium iron phosphate battery positive material and preparation method thereof |
| CN109088063A (en) * | 2018-08-15 | 2018-12-25 | 崔晓迪 | A kind of lithium ion battery material and preparation method thereof |
| CN110676445A (en) * | 2019-09-19 | 2020-01-10 | 安徽清泉新能源科技集团有限责任公司 | Sol-coated lithium battery material and preparation method thereof |
-
2020
- 2020-10-21 CN CN202011134920.4A patent/CN112290023A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185140A (en) * | 2011-03-31 | 2011-09-14 | 中国科学院过程工程研究所 | Preparation method of nano-network conductive polymer coated lithium iron phosphate anode material |
| CN104009232A (en) * | 2014-06-10 | 2014-08-27 | 湖北工程学院 | Preparation method of lithium iron phosphate composite anode material |
| CN104638242A (en) * | 2015-02-06 | 2015-05-20 | 重庆特瑞电池材料股份有限公司 | Method for synthesizing lithium ion battery cathode material lithium iron phosphate through in situ polymerizing and cladding |
| CN108987748A (en) * | 2018-07-26 | 2018-12-11 | 戚明海 | A kind of lithium iron phosphate battery positive material and preparation method thereof |
| CN109088063A (en) * | 2018-08-15 | 2018-12-25 | 崔晓迪 | A kind of lithium ion battery material and preparation method thereof |
| CN110676445A (en) * | 2019-09-19 | 2020-01-10 | 安徽清泉新能源科技集团有限责任公司 | Sol-coated lithium battery material and preparation method thereof |
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