CN107565168A - A kind of lithium ion battery of high-energy-density high power density - Google Patents
A kind of lithium ion battery of high-energy-density high power density Download PDFInfo
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- CN107565168A CN107565168A CN201710600922.XA CN201710600922A CN107565168A CN 107565168 A CN107565168 A CN 107565168A CN 201710600922 A CN201710600922 A CN 201710600922A CN 107565168 A CN107565168 A CN 107565168A
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- ion battery
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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 present invention relates to a kind of high-energy-density and the lithium ion battery of high power density, positive pole uses the metallic compound cobalt acid lithium of lithium, nickel cobalt sour lithium or nickel cobalt lithium aluminate suddenly, and negative pole uses stratiform or graphite, silicon-carbon or the silicon nanowires of non-laminar thing.Using high viscosity anode sizing agent and the injection of high viscosity cathode size on the matrix coated in metal porous aligned orderly rule.By using regular porous matrix, in bore region, positive and negative pole material fills the region, increases active material loading.The porous substrate of both positive and negative polarity B-rule distribution, in addition to the filling to active material, pole piece extends when rolling to be reduced, packing area or because do not have metallic matrix, the ion of reaction can be reacted by this region, and the diversity of lithium subchannel is added in electrochemical reaction.The lithium ion battery that the invention obtains has great lifting in terms of energy density per unit volume and gravimetric specific energy and discharge energy density.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of high-energy-density and the lithium of high power density from
Sub- battery.
Background technology
The advantages that lithium ion is with its high-energy-density, high working voltage, long circulation life Environmental Safety, all the time just
Take and obtain largely generally using in formula electronic product.As electronics industry continues to develop, portable consumer electronics product function
Increasingly improve powerful, the especially appearance of smart mobile phone, tablet personal computer, its is powerful, and component is various, to electrical demand
Larger, charge and discharge number is frequent, the battery energy density arrived to random fit, cycle life, and security performance requires more and more higher.
It is increasing for the lithium ion battery demand of high energy density per unit volume and high power density in the market, to low energy
The battery of metric density can be reduced gradually.Material and voltage platform known to traditional battery use, are carried to the energy density of battery
Rise slower.
The present invention improves energy density per unit volume, the gravimetric specific energy of lithium ion battery in the case of existing market technology
It is with the obvious advantage in battery technology lifting with high power density during electric discharge, have a wide range of applications meaning in production and in the market
Justice.
The content of the invention
It is an object of the invention to provide a kind of high-energy-density and the lithium ion battery of high power density, using the invention
The battery energy density and power density that battery design and preparation method obtain all are obviously improved.
For achieving the above object, technical scheme provided by the invention is：
A kind of lithium ion battery of high-energy-density high power density, the lithium-ion electric packed including the use of film or housing
Pond, wherein positive pole material are the layered metal compound of lithium, and negative pole material is nonwoven fabric from filaments or non-laminar thing；Wherein positive pole, negative pole use
The active material of highly viscous slurry or solid-liquid form shape；
Cathode metal base material is porous regular arrangement architecture, a diameter of 0.2~2mm in hole, hole density is 18~
300pcs/cm2, hole is symmetrically or non-symmetrically to arrange；The angle of direction and the metal base long side vertical line of hole arrangement is 25~
90 degree；10~300mm of cathode metal substrate width, 20~3000mm of length；
Negative metal base material is porous regular arrangement architecture, a diameter of 0.2~2mm in hole, hole density is 18~
300pcs/cm2, hole are symmetrically or non-symmetrically to arrange；The angle of direction and the metal base long side vertical line of hole arrangement is 25~
90 degree；10~300mm of negative metal substrate width, 20~3000mm of length；
The hole arranged in described two kinds of polar substrates of positive pole and negative pole is the opposite direction that orientation intersects.
The electrolyte of the lithium ion battery is the mixture of organic solvent and lithium salts, the barrier film of the lithium ion battery
For the organic PE films of macromolecule or ceramic coated film.
The porous substrate of both positive and negative polarity B-rule distribution, in addition to the filling to active material, pole piece extends when rolling
Reduced, packing area is not because having metallic matrix, and the ion of reaction can be reacted by this region, in electrochemical reaction
The diversity of lithium subchannel is added, the lithium ion battery being prepared is in energy density per unit volume and gravimetric specific energy and discharge power
There is great lifting in terms of density.
Further, the lithium ion battery is aluminum plastic film, metal-back or plastic casing packaging.
Further, the positive pole material is cobalt acid lithium, nickle cobalt lithium manganate or nickel cobalt lithium aluminate.
Further, the negative pole material is graphite, silicon carbon material or silicon nanowires.
Further, 5000~100000CP of highly viscous slurry viscosity that positive pole uses.
Further, 2000~100000CP of highly viscous slurry viscosity that negative pole uses.
Further, the cathode metal base material is aluminium foil.
Further, the negative metal base material is copper foil.
Beneficial effect：
1. positive pole uses graphite, silicon-carbon or silicon nanowire material using metallic compound, the negative pole of lithium in the present invention, it is electrolysed
Liquid is using organic solvent and the mixture of lithium salts, wherein the maturing of most material, has extremely strong market applicability.
2. positive and negative electrode is using highly viscous slurry or the active material of solid-liquid form shape in the present invention, in current paint-on technique
The upper situation in the absence of application difficult.
3. both positive and negative polarity uses the regular distribution porous metal matrix of particular design requirement in the present invention, wherein porous position exists
Spatially it is fully utilized, electrode active material is filled while mainly its weight is reduced.Fill active matter hair
Shoot effect to be obviously improved the volume ratio and gravimetric specific energy of battery, because using porous positive and negative reversely corresponding in order
Structure, in electrochemical reaction, lithium ion can be provided largely by porous electrode transmission of materials to opposite to lithium ion
Passage adds reactivity, improves energy density per unit volume and gravimetric specific energy and discharge energy density.
4. the energy density per unit volume and gravimetric specific energy of the lithium ion battery that the present invention obtains are all higher, to right in the market
Certain lifting and satisfaction can be obtained in the demand of the battery of high-energy.
Brief description of the drawings
Fig. 1：Positive pole (or negative pole) metal base structural representation.
Fig. 2：Negative pole (or positive pole) metal base structural representation.
Fig. 3：The side view cutaway drawing of lower cushion device.
Fig. 4：Comparative example and embodiment 0.2C energy density per unit volume spirograms.
Fig. 5：Comparative example and embodiment 0.2C gravimetric specific energy figures.
Fig. 6：Comparative example and embodiment 0.2C discharge capacity figures.
Fig. 7：Comparative example and embodiment 2C discharge capacity figures.
Fig. 8：Comparative example and embodiment 2C discharge capacity ratio charts.
In figure：1- positive poles (or negative pole) metal base length；2- positive poles (or negative pole) metal base width；3- positive poles (or
Negative pole) hole orientation and metal base long side vertical line angle；4- positive poles (or negative pole) bore dia；5- negative poles (or positive pole)
Metal base length；6- negative poles (or positive pole) metal base width；7- negative poles (or positive pole) hole orientation is grown with metal base
Side vertical line angle；8- negative poles (or positive pole) bore dia；9- active materials；10- metal bases；11- barrier films.
Embodiment
With reference to specific embodiment, the invention will be further described.
The lithium ion battery of a kind of high-energy-density and high power density, including the use of aluminum plastic film, metal-back or plastic housing
The lithium ion battery of body packaging, positive pole material is the layered metal compound of lithium, using cobalt acid lithium, nickle cobalt lithium manganate or nickel cobalt aluminic acid
Lithium material；Negative pole material is nonwoven fabric from filaments and non-laminar thing, using graphite, silicon carbon material or silicon nanowires material.Anode sizing agent viscosity
5000~100000CP, or be solid-liquid, cathode size 2000~100000CP of viscosity, or be solid-liquid；The positive pole
Metal base is porous arrangement architecture, and a diameter of 0.2~2mm in hole, hole density is 18~300pcs/cm2, hole is symmetrical or non-
Symmetrical ordered arrangement, hole orientation and metal base long side vertical line angle are 25~90 degree.Cathode metal base material is width
10~300mm, length are 20~3000mm.The negative metal base material is porous arrangement architecture, a diameter of 0.2~2mm in hole,
Hole density is 18~300pcs/cm2, hole is symmetrically or non-symmetrically arranges, hole orientation wire clamp vertical with metal base long side
Angle is 25~90 degree.Negative metal base material is that width 10~300mm length is 20~3000mm.
Lithium-ion battery electrolytes are the mixture of organic solvent and lithium salts, and lithium ion battery barrier film is that macromolecule is organic
PE films or ceramic coated film.
The positive electrode substrate and negative pole matrix are regularly arranged orderly porous substrate, and predominantly metal base, positive pole can
To be that aluminium foil, negative pole can be copper foils.The two kinds of porous orientations of polar substrates of positive pole and negative pole are the different directions intersected, instead
(two kinds of polar substrates are reverse in such as Fig. 1 and Fig. 2) is used to pairing.
Metallic matrix volume with porous regular distribution can be reduced, and its volume can be filled by active material, filling
Active matter given play to effect the volume ratio and gravimetric specific energy of battery be obviously improved because using it is porous in order just
Negative reversely corresponding structure, in electrochemical reaction, lithium ion can be perforated through isolation by porous electrode transmission of materials to opposite
Film, provide substantial amounts of reaction channel to lithium ion and add reactivity, improve energy density per unit volume and gravimetric specific energy and
Discharge energy density.
Embodiment 1
By positive active material LiCo2, positive electrode binder PVDF, conductive agent carbon black, solvent NMP with ratio 97.5：
1.3.1.2：25~30 batching mode dispensing is mixed to prepare slurry, and slurry viscosity is adjusted to that for 6000CP, slurry is penetrated using painting
Coating method is coated uniformly on two-sided in porous metals aluminum foil current collector, area about 720cm2, thickness 10um.Porous metals
Base material is that regular perforate its bore dia is 0.3mm, hole count 110pcs/cm2, coated weight average is 40.8mg/cm2. and drying,
Roll, cut after be prepared into anode pole piece.Negative electrode active material graphite, negative pole dispersing agent C MC, negative electrode binder SBR, conductive agent
Conductive carbon black and aqueous solvent are with ratio 98：1：1 70~90 mode dispensing is mixed to prepare slurry, slurry viscosity 2500CP.Will slurry
Material using painting penetrate coating method be coated uniformly on porous metals copper foil collector it is two-sided on, area 742.4cm2, thickness is
10um.Porous metal substrate is that regular perforate its bore dia is 0.3mm, hole count 110pcs/cm2, and coated weight average is
21.4mg/cm2, and dry, roll, cut after be prepared into cathode pole piece.
Positive and negative plate obtained above is wound into a square lithium in a certain way together with barrier film (PP/PE/PP)
Ion battery core, the lithium ion battery that there must be electrolyte is made after entering shell (plastic-aluminum packaging film is formed), fluid injection.Charging exhaust sealing,
Trimming, normal temperature standing are after 3 days, sorting capacity (charging：0.5 charges to 4.40V, and constant-voltage charge to electric current is less than 0.02C, electric discharge
3.0V is discharged to 0.2C) 4.40V is charged to 0.5C after, constant-voltage charge to electric current is less than 0.02C, then is discharged with 2C, after with
0.5C charges to 3.86V- constant-voltage charge cut-off currents 0.02C.Finished product battery, weigh battery weight, measurement battery size
The capacity (0.2C/2C) of subordinate list is calculated, energy density per unit volume, Beijing South Maxpower Technology Co. Ltd compare energy.Data are as shown in table 1.
Embodiment 2
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Locate, anode sizing agent viscosity 6000CP, negative pole viscosity 3500CP in the present embodiment.Positive pole and negative pole porous metals aluminium, copper foil hole are straight
Footpath is 0.45mm, and hole count is that 96pcs/cm2. data are as shown in table 1.
Embodiment 3
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Locate, anode sizing agent viscosity 7000CP, negative pole viscosity 3500CP positive poles and negative pole porous metals aluminium foil, copper bore dia in the present embodiment
For 0.55 mm, hole count is that 82pcs/cm2. data are as shown in table 1.
Embodiment 4
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Locate, anode sizing agent viscosity 7500CP, negative pole viscosity 3500CP positive poles and negative pole porous metals aluminium foil, copper bore dia in the present embodiment
For 0.65 mm, hole count is that 73pcs/cm2. data are as shown in table 1.
Embodiment 5
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Locate, anode sizing agent viscosity 8000CP, negative pole viscosity 5100CP positive poles and negative pole porous metals aluminium, copper foil bore dia in the present embodiment
For 0.8 mm, hole count is that 65pcs/cm2. data are as shown in table 1.
Embodiment 6
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Locate, anode sizing agent viscosity 9000CP, negative pole viscosity 6500CP positive poles and negative pole porous metals aluminium, copper foil bore dia in the present embodiment
For
1.0mm, hole count are that 50pcs/cm2. data are as shown in table 1.
Embodiment 7
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Place, anode sizing agent viscosity 25000CP in the present embodiment, negative pole viscosity 30000CP positive poles and negative pole porous metals aluminium, copper foil hole are straight
Footpath is 1.5mm, and hole count is that 29pcs/cm2. data are as shown in table 1.
Embodiment 8
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Place, anode sizing agent viscosity 50000CP in the present embodiment, negative pole viscosity 50000CP positive poles and negative pole porous metals aluminium, copper foil hole are straight
Footpath is 2.0mm, and hole count is that 18pcs/cm2. data are as shown in table 1.
Embodiment 9
Raw material used by the present embodiment and embodiment 1, production stage, detection method are essentially identical, unique difference
Place, anode sizing agent viscosity 70000CP in the present embodiment, negative pole viscosity 80000CP positive poles and negative pole porous metals aluminium, copper foil hole are straight
Footpath is 0.6mm, and hole count is that 250pcs/cm2. data are as shown in table 1.
Comparative example
Raw material used by this comparative example and embodiment 1, production stage, detection method are essentially identical, unique difference
Locate, both positive and negative polarity uses no porous metallic matrix in this comparative example.Data are as shown in table 1.
Table 1
Battery (0.2C/2.0C) capacity, weight, energy density per unit volume, Beijing South Maxpower Technology Co. Ltd compare energy obtained by the embodiment 1~9 of table 1 and comparative example
Amount.
From table 1 and Fig. 4~Fig. 8, using lithium ion resultant battery prepared by the present invention and the lithium ion in comparative example
Battery is had higher compared to having higher capacity and preferably big multiplying power discharging (2C) using the lithium ion battery of the invention prepared
The gravimetric specific energy of energy density per unit volume and Geng Gao.
It is described above, only it is presently preferred embodiments of the present invention, any formal limitation not is made to the present invention, it is any ripe
Professional and technical personnel is known, it is without departing from the scope of the present invention, real to more than according to the technical spirit of the present invention
Apply any simple modification, equivalent substitution that example made and improve etc., still fall within technical solution of the present invention protection domain it
It is interior.
Claims (8)
- A kind of 1. lithium ion battery of high-energy-density high power density, it is characterised in that：Packed including the use of film or housing Lithium ion battery, wherein positive pole material are the layered metal compound of lithium, and negative pole material is nonwoven fabric from filaments or non-laminar thing；Wherein positive pole, negative Extremely using highly viscous slurry or the active material of solid-liquid form shape；Cathode metal base material is porous regular arrangement architecture, a diameter of 0.2~2mm in hole, hole density is 18~ 300pcs/cm2, hole is symmetrically or non-symmetrically to arrange；The angle of direction and the metal base long side vertical line of hole arrangement is 25~ 90 degree；10~300mm of cathode metal substrate width, 20~3000mm of length；Negative metal base material is porous regular arrangement architecture, a diameter of 0.2~2mm in hole, hole density is 18~ 300pcs/cm2, hole are symmetrically or non-symmetrically to arrange；The angle of direction and the metal base long side vertical line of hole arrangement is 25~ 90 degree；10~300mm of negative metal substrate width, 20~3000mm of length；The hole arranged in described two kinds of polar substrates of positive pole and negative pole is the opposite direction that orientation intersects；The electrolyte of the lithium ion battery is the mixture of organic solvent and lithium salts, and the barrier film of the lithium ion battery is height The organic PE films of molecule or ceramic coated film.
- 2. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：The lithium from Sub- battery is aluminum plastic film, metal-back or plastic casing packaging.
- 3. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：The positive pole Material is cobalt acid lithium, nickle cobalt lithium manganate or nickel cobalt lithium aluminate.
- 4. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：The negative pole Material is graphite, silicon carbon material or silicon nanowires.
- 5. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：Positive pole uses 5000~100000CP of highly viscous slurry viscosity.
- 6. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：Negative pole uses 2000~100000CP of highly viscous slurry viscosity.
- 7. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：The positive pole Metal base is aluminium foil.
- 8. the lithium ion battery of high-energy-density high power density according to claim 1, it is characterised in that：The negative pole Metal base is copper foil.
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Cited By (2)
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| CN109802142A (en) * | 2019-01-25 | 2019-05-24 | 浙江大学 | A kind of porous copper foil of lithium ion battery |
| CN111403739A (en) * | 2020-03-19 | 2020-07-10 | 湖北容百锂电材料有限公司 | Nickel-cobalt-manganese acid lithium battery cell positive electrode active material, aluminum shell battery cell and manufacturing method thereof |
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