CN103915606A - Carbon nanotube dispersing process for lithium ion battery - Google Patents
Carbon nanotube dispersing process for lithium ion battery Download PDFInfo
- Publication number
- CN103915606A CN103915606A CN201410134172.8A CN201410134172A CN103915606A CN 103915606 A CN103915606 A CN 103915606A CN 201410134172 A CN201410134172 A CN 201410134172A CN 103915606 A CN103915606 A CN 103915606A
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- China
- Prior art keywords
- carbon nanotube
- ion battery
- lithium ion
- stirring
- premix
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- 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
- H01M4/04—Processes of manufacture in general
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a carbon nanotube dispersing process for a lithium ion battery. The method comprises the following steps: mixing a carbon nanotube, 1-methyl-2-pyrrolidinone, lithium iron phosphate and aluminum oxide, introducing the mixture into a stirring container, and stirring uniformly to obtain a premix compound; preparing lithium ion battery paste. By repeatedly performing high-speed stirring and low-speed stirring in a matching way, the problem of non-uniform dispersion of the carbon nanotube in the conventional preparation process is solved.
Description
Technical field
The present invention relates to conduction liquid and electrocondution slurry field, be specifically related to lithium ion battery carbon nanotube dispersed technique.
Background technology
Be a kind of rechargeable battery at lithium ion battery, it mainly relies on lithium ion between positive pole and negative pole, to move work.In charge and discharge process, Li+ comes and goes and embeds and deintercalation between two electrodes: when rechargable battery, Li+, from anodal deintercalation, embeds negative pole through electrolyte, and negative pole is in rich lithium state; Contrary when electric discharge.The material that general employing contains elemental lithium, as the battery of electrode, is the representative of modern high performance battery.Anodal electric conducting material is all semi-conducting material conventionally; the conductivity of electronics between particle is just very poor like this; the conductivity that only relies on active material itself is far from being enough, and conventionally can add certain conductive materials, conventional electric conducting material is carbon black, acetylene black, carbon fiber and carbon nano-tube etc.
The method that existing routine is prepared carbon nanotube conducting slurry conventionally use which kind of additive by being dry mixed, the step such as glue and wet water, cannot be that carbon nanotube dispersed is good by stirring, easily produce agglomeration, cause slurry layering, sedimentation etc., cause the problem that lithium battery internal resistance is higher, consistency is poor.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides lithium ion battery carbon nanotube dispersed technique, overcome the inhomogeneous problem of existing preparation technology's carbon nanotube dispersed.
Technical scheme: lithium ion battery carbon nanotube dispersed technique, the method comprises the following steps:
Step 1.1 is prepared premix: carbon nano-tube, nitrogen methyl pyrrolidone, LiFePO 4 and alundum (Al2O3) are mixed, import in stirred vessel and stir, after stirring, obtain premix;
Step 1.2 is ground premix: the premix in step (1.1) is ground with grinder;
Step 1.3 circulation stirring: ground premix is put into high speed dispersor and carry out circulation stirring dispersion, obtain carbon nanotube conducting slurry;
Step 2 is prepared pulp of lithium ion battery:
Step 2.1, by adding bonding agent and cobalt acid lithium in carbon nanotube conducting slurry, is carried out high-speed stirred by this slurry, adds Kynoar simultaneously;
The mixture that step 2.2 obtains step 2.1 is told stirring through row, again adds cobalt acid lithium and bonding agent after stirring, and carries out leaving standstill after stirring at low speed;
Step 2.3 through row high-speed stirred for the third time, obtains pulp of lithium ion battery by the mixture after leaving standstill in step 2.2.
Described bonding agent is for dripping glue.
The diameter of described carbon nano-tube is 0.5～3nm.
Step also comprises conductive agent and LiFePO 4 in (2.1).
The linear velocity of high degree of dispersion machine is 54～60m/s.
Beneficial effect: by repeatedly high-speed stirred and stirring at low speed cooperation, overcome the inhomogeneous problem of existing preparation technology's carbon nanotube dispersed.
Embodiment
Below the present invention is further described.
Lithium ion battery carbon nanotube dispersed technique, the method comprises the following steps:
Step 1.1 is prepared premix: carbon nano-tube, nitrogen methyl pyrrolidone, LiFePO 4 and alundum (Al2O3) are mixed, import in stirred vessel and stir, after stirring, obtain premix;
Step 1.2 is ground premix: the premix in step (1.1) is ground with grinder;
Step 1.3 circulation stirring: ground premix is put into high speed dispersor and carry out circulation stirring dispersion, obtain carbon nanotube conducting slurry;
Step 2 is prepared pulp of lithium ion battery:
Step 2.1, by adding bonding agent and cobalt acid lithium in carbon nanotube conducting slurry, is carried out high-speed stirred by this slurry, adds Kynoar simultaneously;
The mixture that step 2.2 obtains step 2.1 is told stirring through row, again adds cobalt acid lithium and bonding agent after stirring, and carries out leaving standstill after stirring at low speed;
Step 2.3 through row high-speed stirred for the third time, obtains pulp of lithium ion battery by the mixture after leaving standstill in step 2.2.
Described bonding agent is for dripping glue.
The diameter of described carbon nano-tube is 0.5～3nm.
Step also comprises conductive agent and LiFePO 4 in (2.1).
The linear velocity of high degree of dispersion machine is 54～60m/s.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. lithium ion battery carbon nanotube dispersed technique, is characterized in that, the method comprises the following steps:
(1.1) prepare premix: carbon nano-tube, nitrogen methyl pyrrolidone, LiFePO 4 and alundum (Al2O3) are mixed, import in stirred vessel and stir, after stirring, obtain premix;
(1.2) grind premix: the premix in step (1.1) is ground with grinder;
(1.3) circulation stirring: ground premix is put into high speed dispersor and carry out circulation stirring dispersion, obtain carbon nanotube conducting slurry;
(2) prepare pulp of lithium ion battery:
(2.1) by adding bonding agent and cobalt acid lithium in carbon nanotube conducting slurry, this slurry is carried out to high-speed stirred, add Kynoar simultaneously;
(2.2) mixture step (2.1) being obtained is told stirring through row, again adds cobalt acid lithium and bonding agent after stirring, and carries out leaving standstill after stirring at low speed;
(2.3) by the mixture after leaving standstill in step (2.2) through row high-speed stirred for the third time, obtain pulp of lithium ion battery.
2. lithium ion battery carbon nanotube dispersed technique as claimed in claim 1, is characterized in that, described bonding agent is for dripping glue.
3. lithium ion battery carbon nanotube dispersed technique as claimed in claim 1, is characterized in that, the diameter of described carbon nano-tube is 0.5～3nm.
4. lithium ion battery carbon nanotube dispersed technique as claimed in claim 1, is characterized in that, step also comprises conductive agent and LiFePO 4 in (2.1).
5. lithium ion battery carbon nanotube dispersed technique as claimed in claim 1, is characterized in that, the linear velocity of high degree of dispersion machine is 54～60m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134172.8A CN103915606A (en) | 2014-04-03 | 2014-04-03 | Carbon nanotube dispersing process for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134172.8A CN103915606A (en) | 2014-04-03 | 2014-04-03 | Carbon nanotube dispersing process for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103915606A true CN103915606A (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410134172.8A Pending CN103915606A (en) | 2014-04-03 | 2014-04-03 | Carbon nanotube dispersing process for lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN103915606A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564305A (en) * | 2016-11-11 | 2017-04-19 | 冯晋 | Special colored tape for heat sublimation transfer printing |
| JP7414171B1 (en) | 2023-03-10 | 2024-01-16 | 東洋インキＳｃホールディングス株式会社 | Carbon nanotube dispersion composition and its use |
-
2014
- 2014-04-03 CN CN201410134172.8A patent/CN103915606A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564305A (en) * | 2016-11-11 | 2017-04-19 | 冯晋 | Special colored tape for heat sublimation transfer printing |
| CN106564305B (en) * | 2016-11-11 | 2019-06-21 | 马鞍山纽盟知识产权管理服务有限公司 | A kind of thermal dye sublimation transfer printing special colored |
| JP7414171B1 (en) | 2023-03-10 | 2024-01-16 | 東洋インキＳｃホールディングス株式会社 | Carbon nanotube dispersion composition and its use |
| WO2024190056A1 (en) * | 2023-03-10 | 2024-09-19 | ａｒｔｉｅｎｃｅ株式会社 | Carbon nanotube dispersion composition and use thereof |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140709 |
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| WD01 | Invention patent application deemed withdrawn after publication |