CN103199262A - Manufacturing method of high-capacity high-magnification high-safety lithium ion battery - Google Patents
Manufacturing method of high-capacity high-magnification high-safety lithium ion battery Download PDFInfo
- Publication number
- CN103199262A CN103199262A CN2013101078738A CN201310107873A CN103199262A CN 103199262 A CN103199262 A CN 103199262A CN 2013101078738 A CN2013101078738 A CN 2013101078738A CN 201310107873 A CN201310107873 A CN 201310107873A CN 103199262 A CN103199262 A CN 103199262A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- manufacture method
- powder
- power capacity
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a manufacturing method of a high-capacity high-magnification high-safety lithium ion battery. A positive pole material, a netty current collector, a negative pole material, a diaphragm and an electrolyte are adopted, and the positive pole material and the negative pole material are applied to the current collector to prepare a pole piece and prepare the battery. The preparation method of the current collector comprises the following steps of: (1) in an agitator kettle, dissolving PVDF (polyvinylidene fluoride) or PTFE (polytetrafluoroethylene) into NMP (N-methylpyrrolidone), or dissolving CMC into deionized water, then adding SBR (styrene butadiene rubber), stirring for 3-6hours, then adding a power mixture of one or more of silicon dioxide and aluminum oxide, with a concentration of 0.5-2%, and stirring so that powder is uniformly dispersed in the PVDF solution; and (2) applying a glue solution of the powder to the netty current collector by using a coater, and baking with an oven, so that the thickness of the powder on the current collector is 0.5-3mu m. The manufacturing method of the high-capacity high-magnification high-safety lithium ion battery has the beneficial effects of being simple in preparation, easy for production, and suitable for large-scale popularization and application.
Description
Technical field
The present invention relates to the lithium ion battery manufacture technology field, particularly relate to the manufacture method of a kind of high power capacity, high magnification, highly secure lithium ion battery.
Background technology
In the chemical power source system, lithium rechargeable battery has output voltage height (3.6V) for traditional battery, high energy density and long cycle life, and lithium ion battery becomes the member in power supply market rapidly.Along with oil-firedly gradually reduce, environmental pollution and people are for the enhancing of environmental consciousness, the mixed electric car battery of development of new or pure electronic battery and respective battery technology obtain significant progress.
Lithium ion battery partly is made up of positive pole, negative pole, barrier film, electrolyte, collector etc., wherein collector seems extremely important as the positive and negative pole material supporter, positive electrode, negative material are coated on the collector by certain coating method, are assembled into battery through different operations then.For the energy density that improves lithium ion battery, the utilance of active material and the high rate performance of battery, the researcher has carried out a large amount of work, improve the performance of positive electrode by technology such as doping, coatings as the scientific research personnel, seek novel negative material to substitute the graphite type material that present lithium ion battery is adopted, the development of adopting solid electrolyte to substitute technology such as liquid electrolyte has all promoted the progress of lithium ion battery.But the researcher is fewer to the concern of collector, and most lithium ion battery manufacturer also seldom improves collector.Collector as Chinese patent CN1945878A both positive and negative polarity is foil with holes; positive pole is aluminium foil with holes, and negative pole is Copper Foil with holes, but this patent is unfavorable for lithium ion battery electrical conductivity in charge and discharge process; and this collector adopts known method punching, large-scale production complexity.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides the manufacture method of a kind of high power capacity, high magnification, highly secure lithium ion battery, solve problems such as the electrokinetic cell capacity is low, high rate performance is poor, fail safe is low.
The technical solution adopted in the present invention is: a kind of high power capacity, high magnification, the manufacture method of highly secure lithium ion battery, it is characterized in that: adopt positive electrode, reticulated collectors, negative material, barrier film, electrolyte, will be just, negative material is coated to be made pole piece and makes battery on the collector, the making step of described collector is as follows: (1) is dissolved in PVDF (Kynoar) or PTFE (polytetrafluoroethylene) among the NMP (N-methyl pyrrolidone) in agitated kettle or CMC (sodium cellulose glycolate) is dissolved in the back adds SBR (butadiene-styrene rubber) in the deionized water, mixing time 3-6h, then with silicon dioxide, a kind of in the alundum (Al or both powder mixtures add wherein, concentration 0.5-2%, after stirring, powder is scattered in the PVDF solution uniformly; (2) with coating machine the glue of powder is coated in netted collector, after the baking oven baking, powder at the thickness of reticulated collectors at 0.5-3 μ m.
As preferably, described positive electrode adopts LiFePO4 or LiMn2O4 or cobalt acid lithium.
As preferably, described negative material adopts native graphite or Delanium.
As preferably, described barrier film adopts polyethylene, polypropylene or both blendings.
As preferably, the solute of described electrolyte adopts LiPF6 or LiClO4, and the electrolyte organic solvent adopts propylene carbonate ester (PC), ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), the binary of the first and second basic carbonic esters (MEC) composition or the mixed solvent of ternary.
As preferably, described positive electrode is coated on improved netted aluminium foil, and negative material is coated on improved netted Copper Foil.
As preferably, NMP in the PVDF dissolving in the described step (1), the concentration of PVDF is 1-10%, mixing time is 3-6h.
As preferably, CMC is dissolved in the deionized water in the described step (1), and the concentration of CMC is 0.8-1.6%, and mixing time 3-6h adds the SBR of 1.5-3.6% then.
As preferably, the mode by blade coating in the described step (2) is coated in powder on the collector uniformly.
Compared with prior art, the invention has the beneficial effects as follows:
(1) collector of both positive and negative polarity pole piece adopts netted foil, more is conducive to the transmission of lithium ion battery electric current when big multiplying power discharging, and current density is more even;
(2) owing to adopt netted collector, the capacity of cell, has been improved at gravimetric specific energy in corresponding conserve batteries space and then increased the lithium ion battery volumetric specific energy;
(3) apply layer of silicon dioxide, alundum (Al powder at collector, increased the fail safe cycle life prolongation of battery simultaneously of lithium ion battery.
This method preparation is simple, is easy to produce, and is suitable for large-scale promotion application.
Embodiment
In order more to be expressly understood technical scheme of the present invention, below the present invention is further described.
A kind of high power capacity of the present invention, high magnification, the manufacture method of highly secure lithium ion battery, it is characterized in that: adopt positive electrode, reticulated collectors, negative material, barrier film, electrolyte, will be just, negative material is coated to be made pole piece and makes battery on the collector, the making step of described collector is as follows: (1) is dissolved in PVDF (Kynoar) or PTFE (polytetrafluoroethylene) among the NMP (N-methyl pyrrolidone) in agitated kettle or CMC (sodium cellulose glycolate) is dissolved in the back adds SBR (butadiene-styrene rubber) in the deionized water, mixing time 3-6h, then with silicon dioxide, a kind of in the alundum (Al or both powder mixtures add wherein, concentration 0.5-2%, after stirring, powder is scattered in the PVDF solution uniformly; (2) with coating machine the glue of powder is coated in netted collector, after the baking oven baking, powder at the thickness of reticulated collectors at 0.5-3 μ m.
Embodiment one
Add an amount of NMP in agitated kettle, add the PVDF of powdery then, PVDF concentration is that the mixing time of 5%, PVDF is 3h, treats after PVDF is dissolved among the NMP fully silicon-dioxide powdery to be added, and concentration of silicon dioxide is 1%, and solution prepares standby.Silicon dioxde solution is coated on netted aluminium foil and the netted Copper Foil collector uniformly with coating machine, silicon-dioxide powdery is 1 μ m at the thickness of netted aluminium foil and netted Copper Foil, its porosity is 50%, the aperture is 80nm, positive electrode active materials is LiMn2O4, negative active core-shell material is MCMB (MCMB), makes 7568270 rectangular lithium ion batteries, and capacity is 10Ah.
The manufacturing of positive plate: LiMn2O4, binding agent, conductive agent are configured to anode sizing agent according to formula rate, anode sizing agent is coated on the improved netted aluminum foil current collector, through baking, roll-in, cut into positive plate;
The manufacturing of negative plate: MCMB, binding agent, conductive agent are configured to cathode size according to formula rate, cathode size is coated on the improved netted Copper Foil collector, through baking, roll-in, cut into negative plate;
Positive plate, negative plate, barrier film are assembled into electric core, place housing to inject electrolyte, it is solute that electrolyte adopts the lithium hexafluoro phosphate of 1M, EC:DMC:DEC=1:1: 1 mixed solvent, through change into, behind the partial volume, the volume of battery specific capacity has increased by 15% accordingly.
Embodiment 2
Add an amount of NMP in agitated kettle, add the PVDF of powdery then, PVDF concentration is that the mixing time of 5%, PVDF is 3h, treats after PVDF is dissolved among the NMP fully silicon-dioxide powdery to be added, and concentration of silicon dioxide is 1.5%; CMC is dissolved in the deionized water, and the concentration of CMC is 1.0%, adds 1.5% SBR then, after treating to dissolve fully silicon-dioxide powdery is added, and it is standby that concentration is that 1%, two solution prepares.Silicon dioxde solution is coated on the netted aluminum foil current collector uniformly with coating machine, and silicon-dioxide powdery is 1.5 μ m at the thickness of netted aluminium foil, and its porosity is 50%, and the aperture is 80nm; The CMC solution of silicon dioxide is coated on the netted Copper Foil uniformly, and thickness is 1 μ m, and its porosity is 50%, the aperture is 80nm, and positive electrode active materials is nano-grade lithium iron phosphate, and negative active core-shell material is MCMB (MCMB), make 7568270 rectangular lithium ion batteries, capacity is 10Ah.
The manufacturing of positive plate: LiFePO4, binding agent, conductive agent are configured to anode sizing agent according to formula rate, anode sizing agent is coated on the improved netted aluminum foil current collector, through baking, roll-in, cut into positive plate;
The manufacturing of negative plate: MCMB, binding agent, conductive agent are configured to cathode size according to formula rate, cathode size is coated on the improved netted Copper Foil collector, through baking, roll-in, cut into negative plate;
Positive plate, negative plate, barrier film are assembled into electric core, place housing to inject electrolyte, it is solute that electrolyte adopts the lithium hexafluoro phosphate of 1M, EC:DMC:DEC=1:1: 1 mixed solvent, through change into, behind the partial volume, battery is when the 20C multiplying power discharging, capability retention is more than 98%.
Embodiment 3
Add an amount of NMP in agitated kettle, add the PVDF of powdery then, PVDF concentration is that the mixing time of 6%, PVDF is 5h, treats after PVDF is dissolved among the NMP fully silicon-dioxide powdery to be added, and concentration of silicon dioxide is 1%; CMC is dissolved in the deionized water, and the concentration of CMC is 1.40%, adds 2.0% SBR then, after treating to dissolve fully silicon-dioxide powdery is added, and concentration is 1%, and solution prepares standby.Silicon dioxde solution is coated on the netted aluminum foil current collector uniformly with coating machine, and silicon-dioxide powdery is 1 μ m at the thickness of netted aluminium foil, and its porosity is 50%, and the aperture is 80nm; The CMC solution of silicon dioxide is coated on the netted Copper Foil uniformly, thickness is 1.5 μ m, its porosity is 50%, the aperture is 80nm, positive electrode active materials is nano-grade lithium iron phosphate, negative active core-shell material is MCMB (MCMB), makes 7568270 rectangular lithium ion batteries, and capacity is 10Ah.
The manufacturing of positive plate: LiFePO4, binding agent, conductive agent are configured to anode sizing agent according to formula rate, anode sizing agent is coated on the improved netted aluminum foil current collector, through baking, roll-in, cut into positive plate;
The manufacturing of negative plate: MCMB, binding agent, conductive agent are configured to cathode size according to formula rate, cathode size is coated on the improved netted Copper Foil collector, through baking, roll-in, cut into negative plate;
Positive plate, negative plate, barrier film are assembled into electric core, place housing to inject electrolyte, it is solute that electrolyte adopts the lithium hexafluoro phosphate of 1M, EC:DMC:DEC=1:1: 1 mixed solvent, through change into, behind the partial volume, battery is put through overcharging, crossing, short-circuit test, and battery is not on fire, do not explode, do not smolder, no leakage.
The above only is preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, feature and principle change or modify, is included in the patent claim of the present invention.
Claims (9)
1. high power capacity, high magnification, the manufacture method of highly secure lithium ion battery, it is characterized in that: adopt positive electrode, reticulated collectors, negative material, barrier film, electrolyte, will be just, negative material is coated to be made pole piece and makes battery on the collector, the making step of described collector is as follows: (1) is dissolved in PVDF (Kynoar) or PTFE (polytetrafluoroethylene) among the NMP (N-methyl pyrrolidone) in agitated kettle or CMC (sodium cellulose glycolate) is dissolved in the back adds SBR (butadiene-styrene rubber) in the deionized water, mixing time 3-6h, then with silicon dioxide, a kind of in the alundum (Al or both powder mixtures add wherein, concentration 0.5-2%, after stirring, powder is scattered in the PVDF solution uniformly; (2) with coating machine the glue of powder is coated in netted collector, after the baking oven baking, powder at the thickness of reticulated collectors at 0.5-3 μ m.
2. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery is characterized in that: described positive electrode employing LiFePO4 or LiMn2O4 or cobalt acid lithium.
3. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery is characterized in that: described negative material employing native graphite or Delanium.
4. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery is characterized in that: described barrier film employing polyethylene, polypropylene or both blendings.
5. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery, it is characterized in that: the solute of described electrolyte adopts LiPF6 or LiClO4, and the electrolyte organic solvent adopts propylene carbonate ester (PC), ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), the binary of the first and second basic carbonic esters (MEC) composition or the mixed solvent of ternary.
6. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery, it is characterized in that: described positive electrode is coated on improved netted aluminium foil, and negative material is coated on improved netted Copper Foil.
7. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery is characterized in that: NMP in the PVDF dissolving in the described step (1), and the concentration of PVDF is 1-10%, mixing time is 3-6h.
8. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery, it is characterized in that: CMC is dissolved in the deionized water in the described step (1), the concentration of CMC is 0.8-1.6%, and mixing time 3-6h adds the SBR of 1.5-3.6% then.
9. the manufacture method of high power capacity according to claim 1, high magnification, highly secure lithium ion battery, it is characterized in that: the mode by blade coating in the described step (2) is coated in powder on the collector uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101078738A CN103199262A (en) | 2013-03-29 | 2013-03-29 | Manufacturing method of high-capacity high-magnification high-safety lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101078738A CN103199262A (en) | 2013-03-29 | 2013-03-29 | Manufacturing method of high-capacity high-magnification high-safety lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103199262A true CN103199262A (en) | 2013-07-10 |
Family
ID=48721689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101078738A Pending CN103199262A (en) | 2013-03-29 | 2013-03-29 | Manufacturing method of high-capacity high-magnification high-safety lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103199262A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311089A (en) * | 2019-06-11 | 2019-10-08 | 银隆新能源股份有限公司 | A kind for the treatment of process for preventing electrodes of lithium-ion batteries from losing powder in process |
| CN113690403A (en) * | 2021-08-25 | 2021-11-23 | 蜂巢能源科技有限公司 | Battery pole group, preparation method thereof and lithium ion battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090176147A1 (en) * | 2005-12-19 | 2009-07-09 | Panasonic Corporation | Lithium Ion Secondary Battery |
| CN101558527A (en) * | 2007-01-16 | 2009-10-14 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery |
| CN102044661A (en) * | 2009-10-23 | 2011-05-04 | 比克国际(天津)有限公司 | Method for preparing lithium ion battery slurry |
-
2013
- 2013-03-29 CN CN2013101078738A patent/CN103199262A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090176147A1 (en) * | 2005-12-19 | 2009-07-09 | Panasonic Corporation | Lithium Ion Secondary Battery |
| CN101558527A (en) * | 2007-01-16 | 2009-10-14 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery |
| CN102044661A (en) * | 2009-10-23 | 2011-05-04 | 比克国际(天津)有限公司 | Method for preparing lithium ion battery slurry |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311089A (en) * | 2019-06-11 | 2019-10-08 | 银隆新能源股份有限公司 | A kind for the treatment of process for preventing electrodes of lithium-ion batteries from losing powder in process |
| CN113690403A (en) * | 2021-08-25 | 2021-11-23 | 蜂巢能源科技有限公司 | Battery pole group, preparation method thereof and lithium ion battery |
| CN113690403B (en) * | 2021-08-25 | 2022-12-27 | 蜂巢能源科技有限公司 | Battery pole group, preparation method thereof and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104201323B (en) | The preparation method of alumina-coated lithium cobaltate cathode material | |
| CN102723491B (en) | Lithium ion battery combined electrode material immersed and covered by conducting polymer and preparation method thereof | |
| CN102881861B (en) | A kind of high-temperature lithium ion battery anode slice | |
| CN101232091B (en) | Method for preparation of lithium ion battery anode glue size and battery | |
| CN103579590A (en) | Preparation method for coating anode material of lithium battery | |
| CN105514350A (en) | Lithium ion battery | |
| CN104934579B (en) | A kind of porous graphite doping and the preparation method of carbon coating graphite cathode material | |
| CN102916195B (en) | Graphene-coated copper oxide composite cathode material and method for manufacturing same | |
| CN102738442A (en) | High energy density charge-discharge lithium battery | |
| CN105470473B (en) | Positive electrode active material and secondary battery | |
| CN103390748B (en) | A kind of preparation method of alumina-coated lithium cobaltate cathode material | |
| CN106876699A (en) | A kind of combination electrode and its preparation and application | |
| CN102487138B (en) | Cathode slurry and preparation method thereof, cathode of lithium ion battery and lithium ion battery | |
| CN109461906A (en) | A kind of preparation method of lithium sulfur battery anode material | |
| CN102903974B (en) | Lithium-sulfur secondary battery | |
| CN103427068A (en) | Anode material for lithium-sulfur batteries and preparation method of anode material | |
| CN101304085A (en) | Water-based pulping film-forming method for lithium ion battery electrode | |
| CN107768664A (en) | A kind of lithium-rich manganese-based anode material of molybdenum doping and preparation method thereof | |
| CN105047898B (en) | A kind of twin spherical lithium ion secondary battery lithium-rich anode material and preparation method thereof | |
| CN108878777A (en) | A kind of single-ion conductor polymer lithium-sulfur cell | |
| CN103199262A (en) | Manufacturing method of high-capacity high-magnification high-safety lithium ion battery | |
| CN105977457A (en) | Preparation method and application for nanometer TiO<2>/carbon composite material | |
| CN102306788A (en) | Lithium ion battery, cathode thereof and binder for cathode | |
| CN104466163A (en) | Preparation method of carbon-coating lithium ion battery positive material | |
| CN111916728B (en) | Electrochemical doping method of lithium-rich manganese-based positive electrode material and lithium-rich manganese-based positive electrode material doped with lithium-rich manganese-based positive electrode material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130710 |