CN106169616A - A kind of nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator - Google Patents
A kind of nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator Download PDFInfo
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- CN106169616A CN106169616A CN201610870707.7A CN201610870707A CN106169616A CN 106169616 A CN106169616 A CN 106169616A CN 201610870707 A CN201610870707 A CN 201610870707A CN 106169616 A CN106169616 A CN 106169616A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
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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
- 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
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Abstract
The invention discloses a kind of nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator, including positive plate, negative plate, by separate for both positive and negative polarity barrier film, electrolyte, above-mentioned positive plate includes plus plate current-collecting body and is coated on the positive electrode active material layer of anode collection surface, by mass percentage, above-mentioned positive electrode active material layer includes following components: positive active material: 85% ~ 95%；Positive conductive agent: 0.1% ~ 10%；Positive pole bonding agent: 0.1% ~ 10%；Above-mentioned positive active material is nickel cobalt lithium aluminate material.Compared with prior art, the lithium-ions battery that the present invention is developed has Large Copacity, high-energy-density and high current pulsed discharge performance, takes into account the high-multiplying-power discharge performance of ultracapacitor.
Description
Technical field
The invention belongs to the technical field of lithium-ions battery, be specifically related to a kind of nickel cobalt lithium aluminate large-capacity high-power lithium
Ion accumulator.
Background technology
Lithium-ions battery has higher energy density, long circulating relative to lead-acid battery, ickel-cadmium cell, Ni-H cell
The advantages such as life-span and more low self-discharge rate, are currently widely used to each electronic product, new-energy automobile and space and defend
In star power subsystem.
The high power lithium ion cell of merchandized handling mainly uses winding and stacked system to produce battery core at present, and winds
It is uneven to there is electric current distribution in cylindrical battery core prepared by technique, and the internal resistance of cell is high, the defects such as caloric value is big.And lamination side
To have internal resistance little for the battery core that formula produces, and the advantage such as polarize little.For power-type lithium ion battery, discharge-rate reaches 50C,
Specific power reaches 5000W/kg, has been the top level of commercial cells.And jumbo high-power lithium ion is stored
Battery, such as monomer capacity reach 30Ah and more than, the big multiplying power discharging electric current of battery need to reach 3000A and more than.Even if just
For the ultracapacitor that power-performance is superior, the level that its specific power is the highest is about 14000W/kg, but its specific energy one
As less than 10Wh/kg.Therefore Large Copacity, the design of high power lithium ion cell and development are the most rare.
To this end, patent of the present invention proposes a kind of Large Copacity based on nickel cobalt lithium aluminate ternary material, high-power lithium ion
Accumulator, cell maintains higher specific energy and substantially increases the power density of battery simultaneously.
Summary of the invention
The large-capacity high-power lithium ion accumulator that the invention aims to solve above-mentioned technical problem and design, should
Lithium ion battery has the technical characterstics such as high rate performance and the high-energy-density of superelevation.
For reaching above-mentioned purpose, the invention provides a kind of nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator, bag
Include positive plate, negative plate, by separate for both positive and negative polarity barrier film, electrolyte, described positive plate includes plus plate current-collecting body and is coated on
The positive electrode active material layer of anode collection surface, by mass percentage, described positive electrode active material layer includes following components:
Positive active material: 85% ~ 95%；
Positive conductive agent: 0.1% ~ 10%；
Positive pole bonding agent: 0.1% ~ 10%；
Shown positive active material is nickel cobalt lithium aluminate material, the secondary that this material is made up of nanometer primary particle
Grain, primary particle particle diameter is nanoscale, and the particle diameter D50 of second particle is 5 ~ 10um, material particle size narrowly distributing, it is possible to promote material
Processing characteristics.
Described negative plate includes negative current collector and is coated on the negative electrode active material layer of negative pole currect collecting surface, by matter
Amount percentages, described negative electrode active material layer includes following components:
Negative electrode active material: 80% ~ 95%；
Cathode conductive agent: 1% ~ 10%；
Negative pole bonding agent: 1% ~ 10%；
Described negative electrode active material selects at least one of Delanium, carbonaceous mesophase spherules, hard carbon and tin metal alloy.Negative pole
Active agent particle size is little, and particle diameter D50 is 5 ~ 10um, material particle size narrowly distributing.
Described positive conductive agent and cathode conductive agent all select to conduct electricity in super white carbon black, CNT and Graphene extremely
Few one.Build three-dimensional conductive network by the introducing of these two dimensions and three-dimensional conductive material, improve electrode material activity thing
Electrical contact between matter, strengthens pole piece conductive capability and the electrical contact with collector.The most certain high-effective conductive agent adds
Can preferably connect active substance and collector contact forces, strengthen the toughness of electrode slice.
Compared with prior art, the lithium-ions battery that the present invention is developed have Large Copacity, high-energy-density and greatly electricity
Stream pulsed discharge performance, takes into account the high-multiplying-power discharge performance of ultracapacitor.
Accompanying drawing explanation
Fig. 1 is the microcosmic electricity of the positive electrode of a kind of nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator of the present invention
Mirror photo.
Fig. 2 is the 30Ah high-capacity lithium-ion accumulator high-multiplying power discharge curve of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the detailed description of the invention of the present invention is further described.
Embodiment
A kind of lithium ion battery that the present embodiment provides, including positive plate, negative plate, barrier film and electrolyte, battery sets
Meter capacity 30Ah.
Positive plate includes plus plate current-collecting body and is coated on the positive electrode active material layer of anode collection surface, by percent mass
Than meter, positive active material includes following component:
Positive active material nickel cobalt lithium aluminate 92%；
Positive conductive agent white carbon black 3%；
Positive conductive agent CNT 2%；
Positive pole bonding agent Kynoar 3%；
Plus plate current-collecting body be thickness be the aluminium foil of 20um；
Negative plate includes negative current collector and is coated on the negative electrode active material layer of negative pole currect collecting surface, by mass percentage
Meter, negative electrode active material layer includes following component:
Negative electrode active material carbonaceous mesophase spherules 92%；
Cathode conductive agent white carbon black 3%；
Cathode conductive agent CNT 1%；
Negative pole bonding agent Kynoar 4%；
Negative current collector be thickness be the Copper Foil of 12um.
Electrolyte mainly includes machine solvent, additive and lithium salts, and lithium salts is LiFP6, concentration is 1.3mol/L, You Jirong
Agent is mainly dimethyl carbonate (DMC), Ethyl methyl carbonate (EMC), ethylene carbonate (EC) etc., adds vinylene carbonate simultaneously
The additives such as ester (VC), propylene sulfite (PS), LiODFB (LiODFB).
The thickness of barrier film is polypropylene (PP)/polyethylene (the PE)/PP sandwich diaphragm of 25um.
The preparation method of the battery of the present embodiment is:
The preparation of positive plate: nickel cobalt lithium aluminate, white carbon black, CNT and Kynoar are added in NMP and is mixed into slurry, all
Even be coated on aluminium foil, drying, roll-in, cut after, obtain positive plate；
The preparation of negative plate: carbonaceous mesophase spherules, white carbon black, CNT and Kynoar are added in NMP and is mixed into slurry,
Be evenly applied on Copper Foil, drying, roll-in, cut after, obtain negative plate；
The preparation of battery core: positive plate, negative plate and barrier film are made battery core by Z-shaped lamination sheets mode, then at positive plate and
Respectively by ultrasonic bonding positive pole ear and negative lug on negative plate, finally battery core is placed in hermetically sealed housing, baking,
Remove the moisture in battery core；
Fluid injection: inject a certain amount of above-mentioned electrolyte in above-mentioned battery core, sealing stands；
Finally, above-mentioned battery core is carried out forming and capacity dividing, aging through after a while, obtain high-power lithium-ions battery.
By testing battery capacity and specific energy, cell capacity reaches 30Ah, and specific energy is 110Wh/kg, by upper
The battery stating 30Ah carries out high-rate pulse discharge, and pulse discharge time is 2s, as in figure 2 it is shown, from the figure, it can be seen that electric discharge
Moment, voltage quickly falls to 3.4V, and electric current rapidly rises to about 3200A from 0A simultaneously.In electric discharge 2s moment, electric current reaches
3700A, voltage is 2.88V, and now the instantaneous specific power of battery reaches 12068W/kg.
In sum, the lithium-ions battery that the present invention provides has Large Copacity, high-energy-density and heavy current pulse and puts
Electrical property, and there is the high-multiplying-power discharge performance of ultracapacitor.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator, including positive plate, negative plate, both positive and negative polarity is separate
Barrier film, electrolyte, it is characterised in that described positive plate includes plus plate current-collecting body and is just coated on anode collection surface
Pole active material layer, by mass percentage, described positive electrode active material layer includes following components:
Positive active material: 85% ~ 95%；
Positive conductive agent: 0.1% ~ 10%；
Positive pole bonding agent: 0.1% ~ 10%；
Described positive active material is nickel cobalt lithium aluminate material.
2. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 1, it is characterised in that described nickel
The second particle that cobalt lithium aluminate material is made up of nanometer primary particle, primary particle particle diameter is nanoscale, second particle
Particle diameter D50 is 5 ~ 10um.
3. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 1, it is characterised in that described just
Pole conductive agent selects at least one in the super white carbon black of conduction, CNT and Graphene.
4. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 1, it is characterised in that described just
Pole bonding agent selects at least one in Kynoar, butadiene-styrene rubber and politef.
5. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 1, it is characterised in that described is negative
Pole piece includes negative current collector and is coated on the negative electrode active material layer of negative pole currect collecting surface, by mass percentage, and institute
The negative electrode active material layer stated includes following components:
Negative electrode active material: 80% ~ 95%；
Cathode conductive agent: 1% ~ 10%；
Negative pole bonding agent: 1% ~ 10%.
6. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 5, it is characterised in that described is negative
Pole active substance selects at least one in Delanium, carbonaceous mesophase spherules, hard carbon and tin metal alloy.
7. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 5, it is characterised in that described is negative
The particle diameter of pole active substance be D50 be 5 ~ 10um.
8. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 5, it is characterised in that described is negative
Pole conductive agent selects at least one in the super white carbon black of conduction, CNT and Graphene.
9. nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator as claimed in claim 5, it is characterised in that described is negative
Pole bonding agent selects at least one in Kynoar, butadiene-styrene rubber and politef.
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| CN201610870707.7A CN106169616A (en) | 2016-09-30 | 2016-09-30 | A kind of nickel cobalt lithium aluminate large-capacity high-power lithium ion accumulator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450215A (en) * | 2016-11-08 | 2017-02-22 | 成都新柯力化工科技有限公司 | Nickel, cobalt and lithium aluminate electrode material, method for preparing same and application of nickel, cobalt and lithium aluminate electrode material |
| CN109671910A (en) * | 2018-12-20 | 2019-04-23 | 漳州旗滨玻璃有限公司 | The preparation method of positive conductive electrode, battery and battery |
| CN111600064A (en) * | 2020-05-13 | 2020-08-28 | 隆能科技(南通)有限公司 | Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof |
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| CN105047907A (en) * | 2015-09-08 | 2015-11-11 | 上海空间电源研究所 | High-safety lithium ion battery |
| CN105470482A (en) * | 2015-12-02 | 2016-04-06 | 山东精工电子科技有限公司 | Preparation method of aluminum-coated spherical lithium nickel cobalt aluminum oxide cathode material for lithium-ion battery |
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| CN104254937A (en) * | 2012-03-30 | 2014-12-31 | 三洋电机株式会社 | Positive electrode for non-aqueous electrolyte secondary cell, and non-aqueous electrolyte secondary cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450215A (en) * | 2016-11-08 | 2017-02-22 | 成都新柯力化工科技有限公司 | Nickel, cobalt and lithium aluminate electrode material, method for preparing same and application of nickel, cobalt and lithium aluminate electrode material |
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| CN111600064A (en) * | 2020-05-13 | 2020-08-28 | 隆能科技(南通)有限公司 | Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof |
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Application publication date: 20161130 |