CN104466188A - Multilayer composite positive pole piece, method for preparing pole piece and lithium ion battery applying multilayer composite positive pole piece - Google Patents
Multilayer composite positive pole piece, method for preparing pole piece and lithium ion battery applying multilayer composite positive pole piece Download PDFInfo
- Publication number
- CN104466188A CN104466188A CN201410821277.0A CN201410821277A CN104466188A CN 104466188 A CN104466188 A CN 104466188A CN 201410821277 A CN201410821277 A CN 201410821277A CN 104466188 A CN104466188 A CN 104466188A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- positive
- multilayer composite
- anode pole
- composite anode
- 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.)
- Granted
Links
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
- 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
-
- 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
-
- 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
-
- 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
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/44—Fibrous material
-
- 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)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the field of lithium ion batteries and in particular provides a multilayer composite positive pole piece, a method for preparing the pole piece and a secondary lithium ion battery applying the multilayer composite positive pole piece. The composite positive pole piece comprises a current collector layer, a positive active function layer and a safety protection layer formed on the positive active function layer. According to the positive pole piece disclosed by the invention, the condition that inner short circuit occurs because a negative pole material of the lithium ion battery is directly contacted with a positive active material is avoided, the safety performance is good, and the battery of the composite positive pole piece is applied to power batteries.
Description
Technical field
The present invention relates to field of lithium ion battery, the preparation method of a kind of high security MULTILAYER COMPOSITE anode pole piece, pole piece is more specifically provided and applies the lithium rechargeable battery of this pole piece.
Background technology
Lithium rechargeable battery is compared with traditional lead acid batteries, there is higher operating voltage, higher energy density, wider temperature limit, longer cycle life, lower self-discharge rate and the advantage such as manufacture process environmental pollution is little, be widely used as the portable power source of various electronic equipment in recent years, but when lithium rechargeable battery is applied in comparatively harsh natural environment or when charge-discharge magnification is larger, due to battery design defect, battery material quality does not pass a test, the reasons such as safety precautions is not in place, very easily there is the security incidents such as even blast of burning.
In order to improve security performance, industry arranges diaphragm material separately usually between a positive electrode and a negative electrode, stops the two poles of the earth directly to contact with it, avoids the short circuit accident that may cause, and improves battery safety.Diaphragm material is not the functional component of battery material, does not participate in electrochemical reaction, but but for battery assembling adds a procedure, the cost of diaphragm material has accounted for the 30%-40% of full battery material cost.This area engineers and technicians place hope on and carry out alternative diaphragm material by improving electrolytical method, the patent US20110059369 that such as Toyota Company and Tsing-Hua University combine application discloses a kind of siliceous Li-La-Ti oxygen solid electrolyte material, apply the conventional electrolyte of this solid electrolyte material instead of current industry or gel electrolyte, just can remove the diaphragm material in battery, under the prerequisite ensureing fail safe, realize the lithium ion battery structure of positive pole-electrolyte-this standard of negative pole.But the ionic conductivity of current this kind of solid electrolyte is too low, also cannot meet commercial demand.
Summary of the invention
The object of the invention is to: a kind of MULTILAYER COMPOSITE anode pole piece and this pole piece preparation method and the lithium ion battery applying it are provided, lithium battery safety issue is solved from basic material angle, omit diaphragm material, thus improve energy density, Simplified flowsheet, reduce costs.
Technical solution of the present invention is: this MULTILAYER COMPOSITE anode pole piece adopts sandwich construction, comprises successively from the bottom to top: current collector layer, positive-active functional layer, safety protective layer; The component of described safety protective layer comprises nano ceramic fibers and protects adhesive and dispersant, and wherein the ratio of nano ceramic fibers is 60wt%-70wt%, and the ratio of protection adhesive is 25%-40%, and the ratio of dispersant is 1%-5%, adds up to 100%; The component of described positive-active functional layer comprises positive active material, conductive agent and positive electrode binder, and the content of conductive agent conductive carbon black is 5% of positive active material weight, and the content of positive electrode binder polyvinyl alcohol is 5% of positive active material weight; Described current collector layer is made up of conducting metal paillon foil.
Wherein, the thickness of described safety protective layer is at 1 micron to 30 microns.
Wherein, the average length of described nano ceramic fibers 0.5 micron to 5 microns, the average diameter of fiber is in 50 nanometer to 300 nanometers, and the multiple average pore size of the mutual stacking formation of inorfil is at the hole of 0.05 micron to 1 micron; Described nano ceramic fibers is the one in alundum (Al2O3), silicon dioxide, magnesium oxide, titanium dioxide, zirconium dioxide; Described nano ceramic fibers, through surperficial oleophylic process, namely soaks, filters and dries in silane coupling agent solution.
Wherein, described nano ceramic fibers is purified by natural minerals or presoma electrostatic spinning and calcining and obtain.
Wherein, the protection adhesive in the protection adhesive in described safety protective layer and described positive-active functional layer is the one in Kynoar, butadiene-styrene rubber, cellulose.
Wherein, described dispersant is the one in carboxycellulose sodium and polyethylene glycol.
Wherein, MULTILAYER COMPOSITE anode pole piece preparation method comprises the steps:
The first step, fully mixes positive active material, conductive agent, positive electrode binder with positive pole solvent, makes anode sizing agent stand-by; Wherein said positive pole solvent is the 35%-60% of positive active material weight;
Second step, fully mixes nano ceramic fibers, protection adhesive, dispersant with protection solvent, makes protective paste stand-by; Wherein said protection solvent is the 80%-120% of nano ceramic fibers weight;
3rd step, be filled on current collector layer by the method that the anode sizing agent of the first step is coated with, anode sizing agent spreading area is less than the area of current collector layer, through fully drying, and adopt twin rollers roll or do not roll, on current collector layer, form positive-active functional layer;
4th step, on the positive-active functional layer method that the protective paste of second step is coated with being filled in the 3rd step, protective paste spreading area is equal to or greater than anode sizing agent spreading area, through fully drying, and adopt twin rollers roll or do not roll, on positive-active functional layer, form described safety protective layer;
5th step, adopts cutting apparatus to cut coating pole piece, forms MULTILAYER COMPOSITE anode pole piece.
Wherein, described positive pole solvent and protection solvent are the one in ethanol, acetone, butanone, dimethyl formamide, 1-METHYLPYRROLIDONE, diethylformamide, dimethyl sulfoxide (DMSO), oxolane.
Wherein, the lithium ion battery of MULTILAYER COMPOSITE anode pole piece, is characterized in that: described lithium ion battery comprises anode pole piece, electrolyte and cathode pole piece successively, and wherein anode pole piece is made up of above-mentioned anode pole piece.
Compared with prior art, the invention has the beneficial effects as follows:
One, compared with traditional anode pole piece; safety protective layer is added on positive-active functional layer; this layer of material and positive electrode active materials are similarly inorganic non-metallic oxide; engineering properties is similar; hot expansion property is similar, can not be peeling, due to variations in temperature compared with diaphragm material; safety function can be realized better, isolated contact between positive active material and negative electrode active material.
Two, safety protective layer is that primary raw material is made by nano ceramic fibers; because nano-fiber material interactive stacking can self-assembling formation loose structure; be conducive to electrolyte or gelated electrolyte immersion; the inhibition to lithium ion conduction can be reduced as far as possible; increase the reaction contact area of positive active material, improve battery capacity.
Three, lithium ion battery eliminates diaphragm material, the safe tolerable temperature of battery is significantly improved, has stopped the possibility of the on fire suddenly or explosion accident caused because temperature exceedes diaphragm material fusing point from principle.
Four, in anode pole piece, the formation process of safety protective layer formation process and positive-active functional layer is completely the same; selection, the slurry preparation technique of solvent and adhesive are also consistent; the significantly increase of pole piece production cost can not be caused; reducing diaphragm material demand can make cost decline to a great extent simultaneously, also can simplify battery manufacturing process.
Accompanying drawing explanation
Fig. 1 MULTILAYER COMPOSITE anode pole piece structural representation.
Fig. 2 embodiment S3 positive-active functional layer surface Scanning Electron microscope photograph.
Fig. 3 embodiment S3 safety protective layer surface electronic microscope photograph.
In figure: 1 safety protective layer; 2 positive-active functional layers; 3 current collector layer.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail, understands the present invention to help those skilled in the art, but embodiment not the restriction to technical solution of the present invention.
As shown in Figure 1, this pole piece adopts sandwich construction, comprises from the bottom to top: current collector layer 3, positive-active functional layer 2 and safety protective layer 1.
Embodiment 1: alundum (Al2O3) MULTILAYER COMPOSITE anode pole piece S1
(1) 2.0g aluminum nitrate being dissolved in 20g deionized water, then adding the polyvinyl alcohol water solution of 20g mass concentration 10%, through fully stirring, obtaining precursor solution; Above-mentioned precursor solution is added in electrospinning device syringe, by electrospinning process, obtain precursor fibre (spinning condition: spinning voltage 30KV, extruded velocity 2.0ml/min); Through repeatedly above-mentioned steps, obtain many parts of precursor fibre; Taken off from dash receiver by whole fiber, in moderate oven, calcine 10 hours with the condition of 1000 DEG C, collect the alumina fiber powder obtained and amount to 50.5g, the average length of this alumina fiber is 0.5 micron, and average diameter is 50 nanometers; Alumina fiber powder is dispersed in water, under the condition of heating water bath 80 degrees Celsius, adds silane coupler KH570 solution, and soak reaction 2 hours, carry out subsequently filtering, drying, complete surperficial oleophylic process; Taking pretreated alumina fiber powder 24.0g, carboxymethyl cellulose 14.0g, polyethylene glycol 2g, be dissolved in 20g ethanol, through fully stirring, forming protective layer slurry;
(2) 20g cobalt acid lithium, 1g conductive carbon black, 1g polyvinyl alcohol are dissolved in 20g ethanol, fully mix, make anode sizing agent; Be filled on aluminium foil by the method that anode sizing agent is coated with, anode sizing agent spreading area is less than the area of aluminium foil, through fully drying, adopts twin rollers calendering on aluminium foil, form positive-active functional layer; The method that protective paste is coated with is filled on above-mentioned positive-active functional layer, protective paste spreading area is equal to or greater than described anode sizing agent spreading area, through fully drying, adopting twin rollers calendering, on positive-active functional layer, forming safety protective layer; Adopt cutting apparatus to cut coating pole piece, obtain alundum (Al2O3) MULTILAYER COMPOSITE anode pole piece; In this anode composite pole piece, the thickness of described positive-active functional layer is 60 microns, and the thickness of described safety protective layer is 10 microns.
Embodiment 2: magnesium oxide, titanium dioxide MULTILAYER COMPOSITE anode pole piece S2
(1) 2.0g magnesium nitrate being dissolved in 20g deionized water, then adding 20g mass concentration 10% poly-vinyl alcohol solution, through fully stirring, obtaining precursor solution; Above-mentioned precursor solution is added in electrospinning device syringe, by electrospinning process, obtain precursor fibre (spinning condition: spinning voltage 30KV, extruded velocity 2.0ml/min); Through repeatedly above-mentioned steps, obtain many parts of oxidation of precursor magnesium fibers; Whole magnesia fibers taken off from dash receiver, in high temperature furnace, calcine 10 hours with the condition of 1200 DEG C, magnesium oxide, the titania fiber powder of collecting acquisition amount to 40.5g, and the average length of this magnesia fibers is 3 microns, and average diameter is 300 nanometers; Magnesia fibers powder is dispersed in water, under the condition of heating water bath 80 degrees Celsius, adds Silane coupling agent KH550 solution, and soak reaction 2 hours, carry out subsequently filtering, drying, complete surperficial oleophylic process; Taking magnesia fibers powder 26.0g, butadiene-styrene rubber 12.8g, sodium carboxymethylcellulose 1.2g after obtaining in advance, be dissolved in 25g ethanol, through fully stirring, forming protective layer slurry;
(2) 20g cobalt acid lithium, 1g conductive carbon black, 1g polyvinyl alcohol are dissolved in 20g ethanol, fully mix, make anode sizing agent; Be filled on aluminium foil by the method that anode sizing agent is coated with, anode sizing agent spreading area is less than the area of aluminium foil, through fully drying, adopts twin rollers calendering on aluminium foil, form described positive-active functional layer; The method that protective paste is coated with is filled on described positive-active functional layer, protective paste spreading area is equal to or greater than described anode sizing agent spreading area, through fully drying, adopting twin rollers calendering, on positive-active functional layer, forming safety protective layer; Adopt cutting apparatus to cut coating pole piece, obtain magnesium oxide, titanium dioxide MULTILAYER COMPOSITE anode pole piece; In this anode composite pole piece, the thickness of described positive-active functional layer is 100 microns, and the thickness of described safety protective layer is 30 microns.
Embodiment 3: attapulgite clay MULTILAYER COMPOSITE anode pole piece S3
(1) Concave-convex clay rod select in through physics floatation purify sample (purchased from Changzhou Jiuchuan Nano Material Technology Co., Ltd.), originate from Jiangsu-Anhui area, microscopic appearance to be bar-shaped, average length 1 micron, average diameter the be 2:1 type clay mineral of 0.05 micron; Concave-convex clay rod fiber powder is dispersed in water, under the condition of heating water bath 80 degrees Celsius, adds silane coupler KH570 solution, and soak reaction 2 hours, carry out subsequently filtering, drying, complete surperficial oleophylic process; Taking pretreated mineral fibres powder 28.0g, Kynoar 11.6g, polyethylene glycol 0.4g, be dissolved in 30g ethanol, through fully stirring, forming protective layer slurry;
(2) 20g cobalt acid lithium, 1g conductive carbon black, 1g polyvinyl alcohol are dissolved in 20g ethanol, fully mix, make anode sizing agent; Be filled on aluminium foil by the method that anode sizing agent is coated with, anode sizing agent spreading area is less than the area of aluminium foil, through fully drying, adopts twin rollers calendering on aluminium foil, form described positive-active functional layer, as shown in Figure 2; The method that protective paste is coated with is filled on described positive-active functional layer, protective paste spreading area is equal to or greater than described anode sizing agent spreading area, through fully drying, adopts twin rollers calendering, safety protective layer is formed, as shown in Figure 3 on positive-active functional layer; Adopt cutting apparatus to cut coating pole piece, obtain attapulgite clay MULTILAYER COMPOSITE anode pole piece; The thickness of described positive-active functional layer is 60 microns, and the thickness of described safety protective layer is 5 microns.
Embodiment 4: attapulgite clay MULTILAYER COMPOSITE anode pole piece S4
(1) Concave-convex clay rod select in through physics floatation purify sample (purchased from Changzhou Jiuchuan Nano Material Technology Co., Ltd.), originate from Jiangsu-Anhui area, microscopic appearance to be bar-shaped, average length 1 micron, average diameter the be 2:1 type clay mineral of 0.05 micron; Concave-convex clay rod fiber powder is dispersed in water, under the condition of heating water bath 80 degrees Celsius, adds silane coupler KH570 solution, and soak reaction 2 hours, carry out subsequently filtering, drying, complete surperficial oleophylic process; Taking pretreated mineral fibres powder 24.0g, Kynoar 15.6g, polyethylene glycol 0.4g, be dissolved in 30g ethanol, through fully stirring, forming protective layer slurry;
(2) 20g cobalt acid lithium, 1g conductive carbon black, 1g polyvinyl alcohol are dissolved in 20g ethanol, fully mix, make anode sizing agent; Be filled on aluminium foil by the method that anode sizing agent is coated with, anode sizing agent spreading area is less than the area of aluminium foil, through fully drying, adopts twin rollers calendering on aluminium foil, form described positive-active functional layer; The method that protective paste is coated with is filled on described positive-active functional layer, protective paste spreading area is equal to or greater than described anode sizing agent spreading area, through fully drying, adopting twin rollers calendering, on positive-active functional layer, forming safety protective layer; Adopt cutting apparatus to cut coating pole piece, obtain attapulgite clay MULTILAYER COMPOSITE anode pole piece.The thickness of described positive-active functional layer is 50 microns, and the thickness of described safety protective layer is 1 micron.
All adopt standard cylinder battery process to make 18650 lithium rechargeable batteries embodiment 1-4 gained composite pole piece to test, wherein negative pole selection standard artificial plumbago negative pole pole piece, omit the technical process adding barrier film, and inject electrolyte (Guangzhou Tianci Advanced Materials Co., Ltd, model TC-E208).Table 1 is gained battery performance.
Table 1, use embodiment 1-4 gained composite pole piece are assembled and obtain the performance data list of battery
As shown in Table 1, the battery adopting this composite pole piece to prepare can meet the demand that discharge and recharge uses, but the more existing commercial batteries of performance is lower slightly, but eliminates diaphragm material in this battery, simplifies technique, is following development trend.
The security performance testing result of 18650 lithium rechargeable batteries that above-mentioned embodiment 1-4 gained composite pole piece is assembled and obtained is as shown in table 2.
Table 2, use embodiment 1-4 gained composite diaphragm are assembled and obtain the security performance testing result of battery
| Test event | Standard | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Extruding | Nothing is smoldered, on fire, blast | OK | OK | OK | OK |
| Free-electron model | Without smoldering, on fire, blast, leakage | OK | OK | OK | OK |
| Overcharge | Nothing is smoldered, on fire, blast | OK | OK | OK | OK |
| Overdischarge | Nothing is smoldered, on fire, blast | OK | OK | OK | OK |
| Heavy impact | Nothing is smoldered, on fire, blast | OK | OK | OK | OK |
| Thermal shock | Nothing is smoldered, on fire, blast | OK | OK | OK | OK |
As shown in Table 2, application this patent provide technology to produce composite pole piece, really can ensure the security performance of lithium ion battery, institute's assembled battery security performance is up to standard, can use as commercial product.
Claims (9)
1. MULTILAYER COMPOSITE anode pole piece, is characterized in that: this pole piece adopts sandwich construction, comprises successively from the bottom to top: current collector layer, positive-active functional layer, safety protective layer; The component of described safety protective layer comprises nano ceramic fibers and protects adhesive and dispersant, and wherein the ratio of nano ceramic fibers is 60wt%-70wt%, and the ratio of protection adhesive is 25%-40%, and the ratio of dispersant is 1%-5%, adds up to 100%; The component of described positive-active functional layer comprises positive active material, conductive agent and positive electrode binder, and the content of conductive agent conductive carbon black is 5% of positive active material weight, and the content of positive electrode binder polyvinyl alcohol is 5% of positive active material weight; Described current collector layer is made up of conducting metal paillon foil.
2. MULTILAYER COMPOSITE anode pole piece according to claim 1, is characterized in that: the thickness of described safety protective layer is at 1 micron to 30 microns.
3. MULTILAYER COMPOSITE anode pole piece according to claim 1, it is characterized in that: the average length of described nano ceramic fibers 0.5 micron to 5 microns, the average diameter of fiber is in 50 nanometer to 300 nanometers, and the multiple average pore size of the mutual stacking formation of inorfil is at the hole of 0.05 micron to 1 micron; Described nano ceramic fibers is the one in alundum (Al2O3), silicon dioxide, magnesium oxide, titanium dioxide, zirconium dioxide; Described nano ceramic fibers, through surperficial oleophylic process, namely soaks, filters and dries in silane coupling agent solution.
4. MULTILAYER COMPOSITE anode pole piece according to claim 3, is characterized in that: described nano ceramic fibers is purified by natural minerals or presoma electrostatic spinning and calcining and obtain.
5. MULTILAYER COMPOSITE anode pole piece according to claim 1, is characterized in that: the protection adhesive in the protection adhesive in described safety protective layer and described positive-active functional layer is the one in Kynoar, butadiene-styrene rubber, cellulose.
6. MULTILAYER COMPOSITE anode pole piece according to claim 1, is characterized in that: described dispersant is the one in carboxycellulose sodium and polyethylene glycol.
7. the preparation method of MULTILAYER COMPOSITE anode pole piece according to claim 1, is characterized in that this pole piece preparation method comprises the steps:
The first step, fully mixes positive active material, conductive agent, positive electrode binder with positive pole solvent, makes anode sizing agent stand-by; Wherein said positive pole solvent is the 35%-60% of positive active material weight;
Second step, fully mixes nano ceramic fibers, protection adhesive, dispersant with protection solvent, makes protective paste stand-by; Wherein said protection solvent is the 80%-120% of nano ceramic fibers weight;
3rd step, be filled on current collector layer by the method that the anode sizing agent of the first step is coated with, anode sizing agent spreading area is less than the area of current collector layer, through fully drying, and adopt twin rollers roll or do not roll, on current collector layer, form positive-active functional layer;
4th step, on the positive-active functional layer method that the protective paste of second step is coated with being filled in the 3rd step, protective paste spreading area is equal to or greater than anode sizing agent spreading area, through fully drying, and adopt twin rollers roll or do not roll, on positive-active functional layer, form described safety protective layer;
5th step, adopts cutting apparatus to cut coating pole piece, forms MULTILAYER COMPOSITE anode pole piece.
8. the preparation method of MULTILAYER COMPOSITE anode pole piece according to claim 7, is characterized in that: described positive pole solvent and protection solvent are the one in ethanol, acetone, butanone, dimethyl formamide, 1-METHYLPYRROLIDONE, diethylformamide, dimethyl sulfoxide (DMSO), oxolane.
9. the lithium ion battery of MULTILAYER COMPOSITE anode pole piece according to claim 1, it is characterized in that: described lithium ion battery comprises anode pole piece, electrolyte and cathode pole piece successively, wherein anode pole piece is made up of the anode pole piece described in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821277.0A CN104466188B (en) | 2014-12-25 | 2014-12-25 | Its lithium ion battery of MULTILAYER COMPOSITE anode pole piece and this pole piece preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821277.0A CN104466188B (en) | 2014-12-25 | 2014-12-25 | Its lithium ion battery of MULTILAYER COMPOSITE anode pole piece and this pole piece preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104466188A true CN104466188A (en) | 2015-03-25 |
| CN104466188B CN104466188B (en) | 2016-09-14 |
Family
ID=52911873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410821277.0A Withdrawn - After Issue CN104466188B (en) | 2014-12-25 | 2014-12-25 | Its lithium ion battery of MULTILAYER COMPOSITE anode pole piece and this pole piece preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104466188B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152748A (en) * | 2017-12-14 | 2018-06-12 | 株洲广锐电气科技有限公司 | Ice storing time system and its detection method |
| CN108475828A (en) * | 2016-04-14 | 2018-08-31 | 株式会社Lg化学 | Lithium electrode protective film and lithium electrode and lithium secondary battery comprising it |
| CN108511806A (en) * | 2018-03-30 | 2018-09-07 | 清陶（昆山）新能源材料研究院有限公司 | A kind of preparation method of flexible battery |
| CN109891640A (en) * | 2016-10-26 | 2019-06-14 | 三洋电机株式会社 | Electrode for nonaqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
| CN110190335A (en) * | 2019-06-03 | 2019-08-30 | 哈尔滨工业大学 | A kind of solid electrolyte interface method of modifying and its application |
| CN111785932A (en) * | 2020-09-07 | 2020-10-16 | 苏州清陶新能源科技有限公司 | Preparation method of positive electrode of lithium ion battery |
| CN112563450A (en) * | 2020-12-11 | 2021-03-26 | 珠海冠宇电池股份有限公司 | Positive plate and battery |
| CN113227776A (en) * | 2019-01-10 | 2021-08-06 | 日本碍子株式会社 | Gas sensor |
| CN114597591A (en) * | 2022-05-10 | 2022-06-07 | 四川新能源汽车创新中心有限公司 | Lithium battery diaphragm and preparation method and application thereof |
| CN115020634A (en) * | 2022-06-06 | 2022-09-06 | 惠州锂威新能源科技有限公司 | Safety coating, positive plate, preparation method of positive plate and secondary battery |
| CN115224351A (en) * | 2022-06-09 | 2022-10-21 | 惠州锂威新能源科技有限公司 | Pole piece of composite solid electrolyte and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005285605A (en) * | 2004-03-30 | 2005-10-13 | Matsushita Electric Ind Co Ltd | Lithium ion battery |
| CN101188283A (en) * | 2006-11-21 | 2008-05-28 | 三星Sdi株式会社 | Postive electrode for rechargeable lithium battery and rechargeable lithium battery including same |
| JP2014116209A (en) * | 2012-12-10 | 2014-06-26 | Toyota Industries Corp | Electrode and method for manufacturing electrode |
-
2014
- 2014-12-25 CN CN201410821277.0A patent/CN104466188B/en not_active Withdrawn - After Issue
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005285605A (en) * | 2004-03-30 | 2005-10-13 | Matsushita Electric Ind Co Ltd | Lithium ion battery |
| CN101188283A (en) * | 2006-11-21 | 2008-05-28 | 三星Sdi株式会社 | Postive electrode for rechargeable lithium battery and rechargeable lithium battery including same |
| JP2014116209A (en) * | 2012-12-10 | 2014-06-26 | Toyota Industries Corp | Electrode and method for manufacturing electrode |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108475828A (en) * | 2016-04-14 | 2018-08-31 | 株式会社Lg化学 | Lithium electrode protective film and lithium electrode and lithium secondary battery comprising it |
| CN109891640A (en) * | 2016-10-26 | 2019-06-14 | 三洋电机株式会社 | Electrode for nonaqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery |
| CN108152748A (en) * | 2017-12-14 | 2018-06-12 | 株洲广锐电气科技有限公司 | Ice storing time system and its detection method |
| CN108511806A (en) * | 2018-03-30 | 2018-09-07 | 清陶（昆山）新能源材料研究院有限公司 | A kind of preparation method of flexible battery |
| CN108511806B (en) * | 2018-03-30 | 2020-10-02 | 苏州清陶新能源科技有限公司 | Preparation method of flexible battery |
| CN113227776A (en) * | 2019-01-10 | 2021-08-06 | 日本碍子株式会社 | Gas sensor |
| CN113227776B (en) * | 2019-01-10 | 2024-03-12 | 日本碍子株式会社 | Gas sensor |
| CN110190335A (en) * | 2019-06-03 | 2019-08-30 | 哈尔滨工业大学 | A kind of solid electrolyte interface method of modifying and its application |
| CN111785932A (en) * | 2020-09-07 | 2020-10-16 | 苏州清陶新能源科技有限公司 | Preparation method of positive electrode of lithium ion battery |
| CN112563450A (en) * | 2020-12-11 | 2021-03-26 | 珠海冠宇电池股份有限公司 | Positive plate and battery |
| CN114597591A (en) * | 2022-05-10 | 2022-06-07 | 四川新能源汽车创新中心有限公司 | Lithium battery diaphragm and preparation method and application thereof |
| CN114597591B (en) * | 2022-05-10 | 2022-08-12 | 四川新能源汽车创新中心有限公司 | Lithium battery diaphragm and preparation method and application thereof |
| CN115020634A (en) * | 2022-06-06 | 2022-09-06 | 惠州锂威新能源科技有限公司 | Safety coating, positive plate, preparation method of positive plate and secondary battery |
| CN115224351A (en) * | 2022-06-09 | 2022-10-21 | 惠州锂威新能源科技有限公司 | Pole piece of composite solid electrolyte and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104466188B (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104466188B (en) | Its lithium ion battery of MULTILAYER COMPOSITE anode pole piece and this pole piece preparation method and application | |
| CN107799699B (en) | Clay mineral composite lithium battery diaphragm and preparation method thereof | |
| CN104752658B (en) | Lithium battery fire-retardant cellulose membrane prepared by a kind of electrostatic spinning | |
| CN106450116B (en) | Hydrophobic silica aerogel composite diaphragm for lithium ion battery | |
| CN109585779A (en) | Take into account the lithium ion cell electrode piece and preparation method of energy density and power density | |
| CN102522514B (en) | High-temperature resistant micropore thin film material and application thereof | |
| Park et al. | Hierarchically mesoporous flower-like cobalt oxide/carbon nanofiber composites with shell–core structure as anodes for lithium ion batteries | |
| CN104600320A (en) | Functional copper foil based on graphene and preparation method thereof | |
| DK2814082T3 (en) | Electrochemical cells with glass-containing separators | |
| JP2013187196A (en) | Polymer li-ion battery and separator thereof | |
| JP6972000B2 (en) | Non-porous separator and its use | |
| CN112467308B (en) | Diaphragm, preparation method thereof and lithium ion battery | |
| CN111653717A (en) | Preparation method of composite diaphragm, composite diaphragm and lithium ion battery | |
| CN106941167A (en) | A kind of porous composite negative pole material of lithium ion battery and preparation method thereof | |
| CN104485438B (en) | Ceramic diaphragm with high inorganic solid-phase content and application of ceramic diaphragm in lithium ion battery system | |
| CN104409674A (en) | Composite diaphragm material and preparation method and application thereof | |
| CN107978789B (en) | Polymer conductive fiber toughened sulfide composite electrolyte | |
| Wu et al. | Reduced graphene oxide as a dual-functional enhancer wrapped over silicon/porous carbon nanofibers for high-performance lithium-ion battery anodes | |
| CN105514434A (en) | Preparation method of whisker-shaped carbon nano tube film | |
| CN103730619B (en) | A kind of preparation method of diaphragm for lithium ion battery of high strength | |
| CN104993084A (en) | Biomass nanocrystal coated polyolefin lithium ion battery diaphragm and production method thereof | |
| CN111180644A (en) | Lithium ion battery diaphragm with ultrathin coating layer | |
| CN109524599A (en) | High ionic conductivity flexibility sulfide solid electrolyte diaphragm and preparation method thereof | |
| CN103545473A (en) | Device and method for preparing integrated lithium battery polar plate diaphragm | |
| CN104022248B (en) | A kind of preparation method of high-performance lithium ion conductive membranes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20230414 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20230414 |