CN105552355A - High-rate lithium-ion battery and preparation method thereof - Google Patents
High-rate lithium-ion battery and preparation method thereof Download PDFInfo
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- CN105552355A CN105552355A CN201510940292.1A CN201510940292A CN105552355A CN 105552355 A CN105552355 A CN 105552355A CN 201510940292 A CN201510940292 A CN 201510940292A CN 105552355 A CN105552355 A CN 105552355A
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- ion battery
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- lithium ion
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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
- 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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- 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 belongs to a high-rate lithium-ion battery and a preparation method thereof. According to the adopted technical scheme, the lithium-ion battery comprises a positive plate, a negative plate, a membrane and an electrolyte, wherein the positive plate comprises a positive active material, a conductive agent, a dispersing agent and a binder; the negative plate comprises a negative active material, the conductive agent, the dispersing agent and the binder; the high-rate lithium-ion battery is characterized in that the positive active material of the positive plate is lithium nickel cobalt aluminate; the conductive agent is a two-component conductive agent carbon black and a graphite conductive agent KS-15; the negative active material of the negative plate is lithium titanate; and the conductive agent is the two-component conductive agent carbon black and the graphite conductive agent KS-15. The high-rate lithium-ion battery has the advantages and effects that a zero-strain material lithium titanate is matched with a lithium nickel cobalt aluminate cathode, so that the high-rate lithium-ion battery has relatively high energy density, and good cycle performance, safety performance, fast charging capability and low-temperature charging capability, and is bound to promote development of the lithium-ion battery in the automotive field.
Description
Technical field
The invention belongs to technical field of lithium ion, particularly relate to a kind of high multiplying power lithium ion battery and preparation method thereof.
Background technology
At present, along with the progress of science and technology and the mankind are to the continuous lifting of new forms of energy demand, performance of lithium ion battery is also in continuous progress, and new-energy automobile proposes higher requirement to lithium ion battery especially now.Realize it to require the most basic will solve its safety problem, also need in addition to improve its low temperature and quick charge capability.Also there are some drawbacks in business-like graphite cathode lithium ion battery, easily forming Li dendrite, causing battery short circuit during as overcharged, and affects the security performance of battery; Easy formation SEI film and cause first charge-discharge efficiency low, irreversible capacity is large; Material with carbon element platform is lower, easily causes electrolyte decomposition, causes potential safety hazard etc.Lithium titanate is zero strain material, and electromotive force higher (1.55V), not easily produces Li dendrite, and security performance is better, quick charge and low temperature charging ability stronger; Nickel cobalt lithium aluminate is a kind of positive electrode of new high-energy-density and advantage of lower cost, and compared with other positive electrode, nickel cobalt lithium aluminate material has higher specific capacity (>=190mAh/g), becomes one of the study hotspot in electrokinetic cell field in recent years.If zero strain material of lithium titanate can be used to mate nickel cobalt lithium aluminate positive pole, there is while making it have higher energy density good cycle performance, security performance, quick charge and low temperature charging ability, the development of lithium ion battery at automotive field will certainly be promoted.
Summary of the invention
The object of this invention is to provide a kind of high multiplying power lithium ion battery and preparation method thereof, there is while making battery have higher energy density concurrently good high rate performance, cycle performance, security performance and low temperature charging ability.
For achieving the above object, the technical solution used in the present invention is:
High multiplying power lithium ion battery, this lithium ion battery comprises positive plate, negative plate, barrier film and electrolyte, and described positive plate is made up of positive active material, conductive agent, dispersant and binding agent; Described negative plate is made up of negative electrode active material, conductive agent, dispersant and binding agent, it is characterized in that, the positive active material of positive plate is nickel cobalt lithium aluminate, and conductive agent is two component conductive agent conductive carbon black and graphite agent KS-15; The negative electrode active material of negative plate is lithium titanate, and conductive agent is two component conductive agent conductive carbon black and graphite agent KS-15.
As preferably, in positive/negative plate, the mass percent of each component is: both positive and negative polarity active material 79 ~ 96.9%, conductive agent 2 ~ 10%, dispersant 0.1 ~ 1%, binding agent 1 ~ 10%.
As preferably, the two-sided surface density of cathode size coating is 150 ~ 220g/m2, compacted density 1.6 ~ 2.05g/cm3.
As preferably, described anode sizing agent coating and cathode size coating Capacity Ratio are 0.8 ~ 1.2.
As preferably, described electrolyte is the lithium salts organic electrolyte solution adding anti-flatulence additive, and injecting electrolytic solution amount is 6.0 ± 0.1g, and described barrier film is polypropylene micropore diaphragm.
As preferably, the dispersant of described positive plate is polyvinylpyrrolidone or polyvinyl alcohol, and binding agent is Kynoar; The dispersant of negative plate is oxalic acid or malonic acid.
Prepare the method for high multiplying power lithium ion battery, positive plate and negative plate are formed core by separating every barrier film and reel, positive plate and negative plate are connected with anode ear, negative electrode lug respectively, anode ear, negative electrode lug be drawn out to lithium ion battery box hat positive and negative extreme on, positive plate and negative plate are Double-pole lug.
Advantage of the present invention with effect is: use zero strain material of lithium titanate to mate nickel cobalt lithium aluminate positive pole, there is while making it have higher energy density good cycle performance, security performance, quick charge and low temperature charging ability, the development of lithium ion battery at automotive field will certainly be promoted.
Accompanying drawing explanation
Fig. 1 is embodiment 1 battery different multiplying discharge performance curve;
Fig. 2 is embodiment 1 battery 1C/20C charge-discharge performance curve.
Embodiment
Embodiment 1:
18650-1000mAh-2.3V type cylindrical steel case lithium ion battery, the positive plate of this battery is by 91.9% positive active material nickel cobalt lithium aluminate, 3% conductive agent conductive carbon black, 2% conductive agent electrically conductive graphite KS-15,0.1% polyethylene of dispersing agent pyrrolidones and 3% binding agent Kynoar composition, the two-sided surface density of positive pole is 145g/m2, and compacted density is 3.4; Negative plate is by 90.9% negative electrode active material lithium titanate, and 3% conductive agent carbonaceous conductive carbon black, 2% conductive agent electrically conductive graphite KS-15,0.1% dispersant oxalic acid and 4% binding agent Kynoar composition, the two-sided surface density of negative pole is 190g/m2, and compacted density is 1.9.
Positive/negative plate is separated by polypropylene microporous every barrier film and reels and forms core, and positive/negative plate is connected with anode ear, negative electrode lug respectively, and by positive and negative lug be drawn out to lithium ion battery box hat positive and negative extremely on, positive/negative plate is Double-pole lug; Electrolyte is be added with the lithium salts organic electrolyte solution adding anti-flatulence additive, and reservoir quantity is 6.0 ± 0.1g, and other are 18650 lithium ion battery conventional processing technique, voltage range 1.4V ~ 2.7V when lithium ion battery detects.
92% to battery capacity can be put when this lithium ion battery 20C discharges.
Embodiment 2:
18650-1000mAh-2.3V type cylindrical steel case lithium ion battery, the positive plate of this battery is by 91.7% positive active material nickel cobalt lithium aluminate, the conductive agent carbonaceous conductive carbon black of 3%, the conductive agent graphite KS-15 of 2%, 0.3% polyethylene of dispersing agent pyrrolidones and 3% binding agent Kynoar composition, the two-sided surface density of positive pole is 150g/m2, and compacted density is 3.5; Negative plate is by 90.7% negative electrode active material lithium titanate, and 3% conductive carbon conductive carbon black, 2% electrically conductive graphite KS-15,0.3% dispersant malonic acid and 4% binding agent Kynoar composition, the two-sided surface density of negative pole is 200g/m2, and compacted density is 2.0.
Positive/negative plate is separated by polypropylene microporous every barrier film and reels and forms the volume heart, and positive/negative plate connects respectively at anode ear, negative electrode lug, and by positive and negative lug be drawn out to lithium ion battery box hat positive and negative extreme on, positive/negative plate is Double-pole lug; Electrolyte is be added with the lithium salts organic electrolyte solution adding anti-flatulence additive, and reservoir quantity is 6.0 ± 0.1g, and other are 18650 lithium ion battery conventional processing technique, voltage range 1.4V ~ 2.7V when lithium ion battery detects.
91% to battery capacity can be put when this lithium ion battery 20C discharges.
Embodiment 3:
18650-1000mAh-2.3V type cylindrical steel case lithium ion battery, the positive plate of this battery is by 91% positive active material nickel cobalt lithium aluminate, 3% conductive agent carbonaceous conductive carbon black, 2% conductive agent electrically conductive graphite KS-15,1% polyethylene of dispersing agent pyrrolidones and 3% binding agent Kynoar composition, the two-sided surface density of positive pole is 180g/m2, and compacted density is 3.45; Negative plate is by 90% negative electrode active material lithium titanate, and 3% conductive carbon conductive carbon black, 2% electrically conductive graphite KS-15,1% dispersant oxalic acid and 4% binding agent Kynoar composition, the two-sided surface density of negative pole is 190g/m2, and compacted density is 1.95.Positive/negative plate is separated by polypropylene microporous every barrier film and reels and forms the volume heart, and positive/negative plate connects respectively at anode ear, negative electrode lug, and by positive and negative lug be drawn out to lithium ion battery box hat positive and negative extreme on, positive/negative plate is Double-pole lug; Electrolyte is be added with the lithium salts organic electrolyte solution adding anti-flatulence additive, and reservoir quantity is 6.0 ± 0.1g, voltage range 1.4V ~ 2.7V when other are 18650 lithium ion battery conventional processing technique lithium ion batteries detection.
89% to battery capacity can be put when this lithium ion battery 20C discharges.
In above-mentioned three kinds of specific embodiments, Kynoar is U.S. Solef Kynoar 5130, and conductive carbon black and electrically conductive graphite KS-15 are that Hui Pu industrial chemical Co., Ltd produces, nickel cobalt lithium aluminate (LiNi
0.8co
0.15al
0.05o
2) using Shenzhen proud son of heaven Science and Technology Development Co., Ltd. product, lithium titanate is that Tianjin Bei Terui new energy materials Co., Ltd produces, and the lithium salts organic electrolyte solution adding anti-flatulence additive selected by electrolyte, for Guangzhou Tianci Advanced Materials Co., Ltd produces.
Fig. 1 is nickel cobalt lithium aluminate in specific embodiment 1-lithium titanate system different multiplying discharge performance curve, can put 92% to battery capacity when can find out that 20C discharges; Fig. 2 is nickel cobalt lithium aluminate in embodiment 1-lithium titanate system 1C/20C charge-discharge performance curve, can find out, battery is after 1C charging 20C electric discharge is carried out 1000 weeks repeatedly, capability retention still can reach more than 90%, illustrates that lithium ion battery has excellent high rate performance and big current cycle performance.
Claims (7)
1. a high multiplying power lithium ion battery, this lithium ion battery comprises positive plate, negative plate, barrier film and electrolyte, and described positive plate is made up of positive active material, conductive agent, dispersant and binding agent; Described negative plate is made up of negative electrode active material, conductive agent, dispersant and binding agent, it is characterized in that, the positive active material of positive plate is nickel cobalt lithium aluminate, and conductive agent is two component conductive agent conductive carbon black and graphite agent KS-15; The negative electrode active material of negative plate is lithium titanate, and conductive agent is two component conductive agent conductive carbon black and graphite agent KS-15.
2. a kind of high multiplying power lithium ion battery according to claim 1, is characterized in that, in described positive/negative plate, the mass percent of each component is: both positive and negative polarity active material 79 ~ 96.9%, conductive agent 2 ~ 10%, dispersant 0.1 ~ 1%, binding agent 1 ~ 10%.
3. a kind of high multiplying power lithium ion battery according to claim 2, is characterized in that, the two-sided surface density of cathode size coating is 150 ~ 220g/m2, compacted density 1.6 ~ 2.05g/cm3.
4. a kind of high multiplying power lithium ion battery according to claim 3, is characterized in that, described anode sizing agent coating and cathode size coating Capacity Ratio are 0.8 ~ 1.2.
5. a kind of high multiplying power lithium ion battery according to claim 4, is characterized in that, described electrolyte is the lithium salts organic electrolyte solution adding anti-flatulence additive, and injecting electrolytic solution amount is 6.0 ± 0.1g, and described barrier film is polypropylene micropore diaphragm.
6., according to the arbitrary described high multiplying power lithium ion battery of claim 1-5, it is characterized in that, the dispersant of described positive plate is polyvinylpyrrolidone or polyvinyl alcohol, and binding agent is Kynoar; The dispersant of negative plate is oxalic acid or malonic acid.
7. prepare the method for the arbitrary described high multiplying power lithium ion battery of claim 1-5 for one kind, it is characterized in that, positive plate and negative plate are separated by barrier film and reeled and forms core, positive plate and negative plate are connected with anode ear, negative electrode lug respectively, anode ear, negative electrode lug be drawn out to lithium ion battery box hat positive and negative extreme on, positive plate and negative plate are Double-pole lug.
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| CN201510940292.1A CN105552355A (en) | 2015-12-16 | 2015-12-16 | High-rate lithium-ion battery and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450291A (en) * | 2016-11-04 | 2017-02-22 | 深圳市卓能新能源股份有限公司 | NCA anode slurry of lithium ion battery and preparation method thereof |
| CN106571463A (en) * | 2016-11-10 | 2017-04-19 | 苏州大时代能源科技有限公司 | Lithium ion battery and preparation method thereof |
| CN106684433A (en) * | 2016-12-08 | 2017-05-17 | 长兴天晟能源科技有限公司 | Additive of negative electrode paste binder for lithium ion battery and preparation method thereof |
| CN107195960A (en) * | 2017-06-16 | 2017-09-22 | 江苏三杰新能源有限公司 | A kind of cylinder fast charging type high multiplying power lithium ion battery |
| WO2022125477A1 (en) * | 2020-12-10 | 2022-06-16 | Medtronic, Inc. | Positive electrode enabling fast charging |
| CN115642292A (en) * | 2022-12-26 | 2023-01-24 | 中国科学院宁波材料技术与工程研究所 | Zero-strain all-solid-state lithium-aluminum battery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450291A (en) * | 2016-11-04 | 2017-02-22 | 深圳市卓能新能源股份有限公司 | NCA anode slurry of lithium ion battery and preparation method thereof |
| CN106571463A (en) * | 2016-11-10 | 2017-04-19 | 苏州大时代能源科技有限公司 | Lithium ion battery and preparation method thereof |
| CN106684433A (en) * | 2016-12-08 | 2017-05-17 | 长兴天晟能源科技有限公司 | Additive of negative electrode paste binder for lithium ion battery and preparation method thereof |
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| CN107195960A (en) * | 2017-06-16 | 2017-09-22 | 江苏三杰新能源有限公司 | A kind of cylinder fast charging type high multiplying power lithium ion battery |
| WO2022125477A1 (en) * | 2020-12-10 | 2022-06-16 | Medtronic, Inc. | Positive electrode enabling fast charging |
| US11909042B2 (en) | 2020-12-10 | 2024-02-20 | Medtronic, Inc. | Positive electrode enabling fast charging |
| CN115642292A (en) * | 2022-12-26 | 2023-01-24 | 中国科学院宁波材料技术与工程研究所 | Zero-strain all-solid-state lithium-aluminum battery |
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