CN105406055A - Capacitive type nickel-cobalt-manganese ternary material lithium ion battery - Google Patents
Capacitive type nickel-cobalt-manganese ternary material lithium ion battery Download PDFInfo
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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
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- 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
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- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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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
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- 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
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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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
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- 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
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Abstract
The invention discloses a capacitive type nickel-cobalt-manganese ternary material lithium ion battery. The lithium ion battery comprises a positive plate, a negative plate and a diaphragm; the positive plate, the negative plate and the diaphragm are coiled or laminated at intervals; the diaphragm is arranged between the positive plate and the negative plate; the positive plate is a capacitive type positive plate; the capacitive type positive plate adopts a three-layer composite structure; the positive electrode pole piece comprises a supercapacitor positive electrode layer, a lithium ion battery positive electrode layer and a positive electrode current collector layer; the negative electrode surface and the positive electrode surface of the positive electrode current collector are coated with the supercapacitor positive electrode layer and the lithium ion battery positive electrode layer respectively; the supercapacitor positive electrode layer is an active carbon electrode material layer; the lithium ion battery positive electrode layer is a nickel-cobalt-manganese ternary material positive electrode material layer; the negative electrode material layer is a mixture of natural graphite, synthetic graphite, soft carbon and hard carbon, wherein the soft carbon and the hard carbon account for 50-95% of the mixture in percentage by mass. The capacitive type nickel-cobalt-manganese ternary material lithium ion battery has the characteristics of high applicability, excellent performance, good quality, convenient processing, high production efficiency and low cost.
Description
Technical field
The present invention relates to technical field of lithium ion, be specially a kind of capacitor type nickel-cobalt-manganese ternary material lithium ion battery.
Background technology
Along with modern society is information-based and intelligentized high speed development, and environmental pollution and energy shortage day by day serious, the social capacity to electrical storage device and demanded power output more and more higher, lithium ion battery and capacitor etc. become current research focus.Lithium ion battery has the advantages such as energy density is high, self-discharge rate is low, but high rate performance is undesirable, power density is lower, and the voltage range of lithium ion battery is between 3.0 ~ 4.1V, during higher than 4.1V, cell positive material and electrolyte are unstable, oxidizable, and negative terminal surface is easily analysed lithium and formed Li dendrite, brings potential safety hazard.Although capacitor has, power density is high, the advantage such as have extended cycle life, and energy density is relatively low, and self-discharge rate is larger.
In order to meet the demand of high-energy-density, high output characteristic, in recent years, electrical storage device that the electric power storage principle of lithium ion battery and capacitor combined, that be referred to as hybrid battery container is noticeable.But, at present the coupling of lithium ion battery and capacitor is confined to lithium ion battery and the coupling of active carbon double-layer electrolytic capacitor more, generally absorbent charcoal material is joined in the active material of lithium ion battery, as Chinese patent application CN103021671A proposes a kind of capacitor of lithium ion battery, through adding active carbon and add soft carbon or hard carbon formation electric double layer active carbon capacitor in positive electrode active materials in negative active core-shell material, the capacitor of lithium ion battery making it prepare has the feature of lithium ion battery high-energy-density and capacitor height highway simultaneously, widen its temperature range used and voltage range, there is excellent electricity (electric charge) conservation rate.But in its technical scheme, activated carbon accounts for 5.0% ~ 50.0% of positive electrode active materials volume percent, and the category-A materials such as soft carbon or hard carbon account for 50.0 ~ 95.0% of negative active core-shell material volume percent, seriously reduce the energy density of lithium ion battery; And, the such as category-A material such as soft carbon or hard carbon is added negative material, active carbon adds in positive electrode, namely need to add in the mixed slurry process of the course of processing at positive pole and negative pole, not only difficulty of processing is unfavorable for more greatly the lifting of production efficiency, and cause many uncertain factors to both positive and negative polarity pulping process, product quality depends critically upon the uniformity of mixed slurry, and quality risk is too high.
Meanwhile.Nickel-cobalt-manganese ternary material is as conventional anode material for lithium-ion batteries, have the advantages that energy density is high, tap density is high, also there is poor stability simultaneously, heat-resisting quantity is poor, the life-span is poor, high power discharge is poor, poisonous (after the high-power discharge and recharge of nickel-cobalt-manganese ternary lithium ion battery, temperature sharply raises element, the as easy as rolling off a log burning of releasing oxygen after high temperature), directly limit nickel-cobalt-manganese ternary material applying at lithium ion battery.
Summary of the invention
The object of this invention is to provide a kind of capacitor type nickel-cobalt-manganese ternary material lithium ion battery, have that equipment applicability is strong, excellent performance, stay in grade, the feature that easy to process, production efficiency is high and with low cost.
The present invention can be achieved through the following technical solutions:
The invention discloses a kind of capacitor type nickel-cobalt-manganese ternary material lithium ion battery, comprise positive plate, negative plate and barrier film, described positive plate, negative plate and the spaced winding of barrier film or stack design, described barrier film is arranged between positive plate and negative plate, described positive plate is capacitor type positive plate, described capacitor type positive plate is three-layer composite structure, described anode pole piece comprises supercapacitor positive electrode layer, lithium ion cell positive layer and plus plate current-collecting body layer, described supercapacitor positive electrode layer and lithium ion cell positive layer are coated in the back and the sunny side of plus plate current-collecting body respectively, described supercapacitor positive electrode layer is active carbon electrode material layer, described lithium ion cell positive layer is nickel-cobalt-manganese ternary material positive electrode material layer, described negative electrode material layer is native graphite, Delanium, the mixture of soft carbon and hard carbon, described soft carbon and hard carbon mass fraction are the 50-95% of mixture.
Described supercapacitor positive electrode layer and lithium ion cell positive layer are separated by winding or stacked middle dislocation, thus achieve lithium-ion-power cell reel or stacked time structure consistency, ensure that the consistency of battery performance.
The spaced winding of described positive plate, negative plate and barrier film forms cylindrical-shaped structure, meets the production requirement of cylindrical steel housing battery, the needs of particularly capacity small column battery production design.
Further, the spaced stacked formation square structure of described positive plate, negative plate and barrier film, meets the production requirement of square soft-package battery, particularly the needs of power-type lithium-ion-power cell Production design.
Further, described plus plate current-collecting body layer is aluminium foil, and aluminium foil is as the plus plate current-collecting body of routine, and processing technology is ripe, is convenient to debugging and the processing of positive electrode coating.
Further, described barrier film is PE barrier film, PP barrier film or PE/PP composite diaphragm, can select the barrier film of unlike material and thickness according to the battery types of reality.
Further, described negative plate is three-layer composite structure, and described negative plate comprises negative current collector layer and is coated in the negative electrode material layer of negative current collector layer.The structure of negative plate is conventional structure, existing technique directly can be utilized to produce, provide the versatility of production, reduces fabrication design cost.
Further, described capacitor type nickel-cobalt-manganese ternary material lithium ion battery also comprises lithium-ion battery electrolytes, described lithium-ion battery electrolytes is made up of solvent, electrolytic salt and additive, wherein solvent is grouped into by dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), ethylene carbonate (EC) four-tuple, its volume basis is as follows: DMC accounts for 20% ~ 30%, DEC accounts for 20% ~ 30%, EMC and accounts for 10% ~ 20%, EC and account for 25% ~ 50%.The electrolyte system of lithium-ion battery electrolytes system and active carbon ultracapacitor is the organic solvent system of character reality, both meets the requirement of lithium ion battery, meets again the need of work of active carbon ultracapacitor, effectively simplifies processing and manufacturing process.
Further, described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), and concentration is O.5 ~ 3.0%, and anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, concentration is O.5 ~ 3.0%, high temperature additive has PS (AS), phthalic anhydride (PA), and its concentration is O.5 ~ 3.0%.
A kind of capacitor type nickel-cobalt-manganese ternary of the present invention material lithium ion battery, has following beneficial effect:
The first, equipment applicability is strong, capacitor type positive plate is formed by the back and sunny side that active carbon electrode material layer and nickel-cobalt-manganese ternary material positive electrode material layer are coated in respectively plus plate current-collecting body, without the need to preparing nickel-cobalt-manganese ternary material positive plate and nickel-cobalt-manganese ternary material positive plate respectively, simplify lithium-ion-power cell winding or stacked structure, existing equipment directly can be adopted to carry out reeling or stacked, improve equipment applicability;
Second, excellent performance, capacitor type positive plate is formed by the back and sunny side that active carbon electrode material layer and nickel-cobalt-manganese ternary material positive electrode material layer are coated in respectively plus plate current-collecting body, active carbon electrode material layer and nickel-cobalt-manganese ternary material positive electrode material layer newly form active carbon ultracapacitor and lithium ion battery with negative electrode material layer respectively, thus make capacitor type nickel-cobalt-manganese ternary material lithium ion battery have the feature that ultracapacitor power density is high and lithium ion battery energy density is high simultaneously, simultaneously, the setting of activated carbon electrodes layer, both the energy density of nickel-cobalt-manganese ternary material lithium ion battery can not have been reduced, and due to activated carbon electrodes layer, avoid the use of the cobalt element that there is larger security risk in whole battery system, effectively improve the security performance of whole battery system,
Three, easy to process, capacitor type positive plate is formed by the back and sunny side that active carbon electrode material layer and nickel-cobalt-manganese ternary material positive electrode material layer are coated in respectively plus plate current-collecting body, negative electrode material layer adopts the mixture of natural stone layer of ink, artificial stone layer of ink, soft carbon and hard carbon, without the need to processing separately respectively, without the need to carrying out fabrication design specially, simplify the course of processing;
Four, quality stability is high, by arranging the back and the sunny side of plus plate current-collecting body layer respectively at supercapacitor positive electrode layer, lithium ion cell positive layer, can not be there is mixing and to pull an oar the quality risk brought in pulping process, and the quality hidden danger that negative plate adopts general design also effectively to reduce negative pole otherness to bring;
Five, mass production efficiency is high, due to winding or stacked processing process in only have a kind of capacitor type positive plate, winding or stacked on do not use the troublesome operation of different anode pole piece, existing equipment processing easy to use, processing qualification is high, the course of processing is simple, is convenient to mass production;
Six, with low cost, adopt the process equipment of lithium ion battery to carry out capacitor type nickel-cobalt-manganese ternary material lithium ion battery, structural design is simple, and technical operation flow simplifies, and mass production efficiency is high, effectively saves and generates this.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of capacitor type nickel-cobalt-manganese ternary of the present invention material lithium ion battery capacitor type positive plate structural representation;
Accompanying drawing 2 is the square layered laminate structural representation of a kind of capacitor type nickel-cobalt-manganese ternary material lithium ion battery of the present invention;
Accompanying drawing 3 is the cylindric winding-structure schematic diagram of a kind of capacitor type nickel-cobalt-manganese ternary material lithium ion battery of the present invention;
Accompanying drawing 4 is a kind of capacitor type nickel-cobalt-manganese ternary of the present invention material lithium ion battery negative plate structure schematic diagram;
In accompanying drawing, mark comprises: 1, positive plate, and 2, negative plate, 3, barrier film, 4, box hat, 5, insulating trip, 6, block, 7, negative electrode material layer, 8, aluminum plastic film, 9, supercapacitor positive electrode layer, 10, plus plate current-collecting body layer, 11, lithium ion cell positive layer, 12, negative current collector layer.
Embodiment
In order to make those skilled in the art person understand technical scheme of the present invention better, below in conjunction with embodiment and accompanying drawing, product of the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, the invention discloses a kind of capacitor type nickel-cobalt-manganese ternary material lithium ion battery, comprise positive plate 1, negative plate 2 and barrier film 3, described positive plate 1, negative plate 2 and the spaced winding of barrier film 3 or stack design, described barrier film 3 is arranged between positive plate 1 and negative plate 2, described positive plate 1 is capacitor type positive plate, described capacitor type positive plate is three-layer composite structure, described anode pole piece comprises supercapacitor positive electrode layer 9, lithium ion cell positive layer 11 and plus plate current-collecting body layer 10, described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 are coated in the back and the sunny side of plus plate current-collecting body 10 respectively, described supercapacitor positive electrode layer 9 is active carbon electrode material layer, described lithium ion cell positive layer 11 is nickel-cobalt-manganese ternary material positive electrode material layer.Described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 are separated by winding or stacked middle dislocation.Described plus plate current-collecting body layer 10 is aluminium foil.Described barrier film 3 is PE barrier film, PP barrier film or PE/PP composite diaphragm.Described negative electrode material layer 7 is the mixture of native graphite, Delanium, soft carbon and hard carbon, and described soft carbon and hard carbon mass fraction are the 50-95% of mixture.Described capacitor type nickel-cobalt-manganese ternary material lithium ion battery also comprises lithium-ion battery electrolytes, described lithium-ion battery electrolytes is made up of solvent, electrolytic salt and additive, wherein solvent is grouped into by dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), ethylene carbonate (EC) four-tuple, its volume basis is as follows: DMC accounts for 20% ~ 30%, DEC accounts for 20% ~ 30%, EMC accounts for 10% ~ 20%, EC and accounts for 25% ~ 50%.Described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), concentration is O.5 ~ 3.0%, anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, and concentration is O.5 ~ 3.0%, and high temperature additive has 1,3-propane sultone (AS), phthalic anhydride (PA), its concentration is O.5 ~ 3.0%.
Embodiment 2
As shown in Figure 2, the spaced stacked formation square structure of described positive plate 1, negative plate 2 and barrier film 3.Capacitor type nickel-cobalt-manganese ternary material lithium ion battery described in the application is square layered laminate structure, battery is encapsulated as square by aluminum plastic film 8, the coated negative plate 2 of barrier film 3 and positive plate 1, negative plate 2 and positive plate 1 spaced, described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 are separated by stacked middle dislocation.Described capacitor type nickel-cobalt-manganese ternary material lithium ion battery also comprises lithium-ion battery electrolytes, described lithium-ion battery electrolytes is made up of solvent, electrolytic salt and additive, wherein solvent is grouped into by dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), ethylene carbonate (EC) four-tuple, its volume basis is as follows: DMC accounts for 20% ~ 30%, DEC accounts for 20% ~ 30%, EMC accounts for 10% ~ 20%, EC and accounts for 25% ~ 50%.Described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), concentration is O.5 ~ 3.0%, anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, and concentration is O.5 ~ 3.0%, and high temperature additive has 1,3-propane sultone (AS), phthalic anhydride (PA), its concentration is O.5 ~ 3.0%.
Embodiment 3
As shown in Figure 3, the spaced winding of described positive plate 1, negative plate 2 and barrier film 3 forms cylindrical-shaped structure.Capacitor type nickel-cobalt-manganese ternary material lithium ion battery described in the application is cylindrical winding-structure, battery core after winding is arranged in cylindrical steel 4, the coated negative plate 2 of barrier film 3 and positive plate 1, negative plate 2 and positive plate 1 spaced, described supercapacitor positive electrode layer 9 and lithium ion cell positive layer 11 are separated by stacked middle dislocation, and box hat 4 is welded with block 6 above, are provided with insulating trip 5 between block 6 and battery core, block 6 is connected with positive plate 1, is connected bottom box hat 4 with negative plate 2.
Embodiment 4
As shown in Figure 4, described negative plate 2 is three-layer composite structure, and described negative plate 2 comprises negative current collector layer 12 and is coated in the negative electrode material layer 7 of negative current collector layer 12, and described negative current collector layer 12 is Copper Foil.
The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly; But all those skilled in the art are not departing within the scope of technical solution of the present invention, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present invention; Meanwhile, all according to substantial technological of the present invention to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection range all still belonging to technical scheme of the present invention.
Claims (9)
1. a capacitor type nickel-cobalt-manganese ternary material lithium ion battery, comprise positive plate (1), negative plate (2) and barrier film (3), described positive plate (1), negative plate (2) and barrier film (3) spaced winding or stack design, described barrier film (3) is arranged between positive plate (1) and negative plate (2), it is characterized in that: described positive plate (1) is capacitor type positive plate, described capacitor type positive plate is three-layer composite structure, described anode pole piece comprises supercapacitor positive electrode layer (9), lithium ion cell positive layer (11) and plus plate current-collecting body layer (10), described supercapacitor positive electrode layer (9) and lithium ion cell positive layer (11) are coated in the back and the sunny side of plus plate current-collecting body (10) respectively, described supercapacitor positive electrode layer (9) is active carbon electrode material layer, described lithium ion cell positive layer (11) is nickel-cobalt-manganese ternary material positive electrode material layer, described negative electrode material layer (7) is native graphite, the mixture of Delanium, soft carbon and hard carbon, and described soft carbon and hard carbon mass fraction are the 50-95% of mixture.
2. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 1, is characterized in that: described supercapacitor positive electrode layer (9) and lithium ion cell positive layer (11) are separated by winding or stacked middle dislocation.
3. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 2, is characterized in that: the spaced winding of described positive plate (1), negative plate (2) and barrier film (3) forms cylindrical-shaped structure.
4. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 2, is characterized in that: the spaced stacked formation square structure of described positive plate (1), negative plate (2) and barrier film (3).
5. the capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 3 or 4, is characterized in that: described plus plate current-collecting body layer (10) is aluminium foil.
6. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 5, is characterized in that: described barrier film (3) is PE barrier film, PP barrier film or PE/PP composite diaphragm.
7. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 6, it is characterized in that: described negative plate (2) is three-layer composite structure, described negative plate (2) comprises negative current collector layer (12) and is coated in the negative electrode material layer (7) of negative current collector layer (12).
8. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 7, it is characterized in that: described capacitor type nickel-cobalt-manganese ternary material lithium ion battery also comprises lithium-ion battery electrolytes, described lithium-ion battery electrolytes is by solvent, electrolytic salt and additive composition, wherein solvent is by dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), ethylene carbonate (EC) four-tuple is grouped into, its volume basis is as follows: DMC accounts for 20% ~ 30%, DEC accounts for 20% ~ 30%, EMC accounts for 10% ~ 20%, EC accounts for 25% ~ 50%.
9. capacitor type nickel-cobalt-manganese ternary material lithium ion battery according to claim 8, it is characterized in that: described additive is made up of film for additive, anti-overcharge additive and high temperature additive, wherein, film for additive has vinylethylene carbonate (VEC), vinylene carbonate (VC), concentration is O.5 ~ 3.0%, anti-overcharge additive has cyclobenzene (CHB), biphenyl, dimethylbenzene, concentration is O.5 ~ 3.0%, high temperature additive has 1,3-propane sultone (AS), phthalic anhydride (PA), its concentration is O.5 ~ 3.0%.
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Cited By (7)
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| CN106654356A (en) * | 2016-11-30 | 2017-05-10 | 浙江超威创元实业有限公司 | Capacitive lithium-ion start-stop battery |
| CN106848292A (en) * | 2016-11-30 | 2017-06-13 | 浙江超威创元实业有限公司 | A kind of capacitor type lithium ion battery |
| CN107482166A (en) * | 2017-07-03 | 2017-12-15 | 深圳市比克动力电池有限公司 | A kind of lithium ion battery |
| CN108987814A (en) * | 2018-07-28 | 2018-12-11 | 江西睿达新能源科技有限公司 | A kind of lithium ion battery nickel-cobalt-manganternary ternary anode material |
| CN111987392A (en) * | 2020-08-27 | 2020-11-24 | 中国科学院电工研究所 | Split type lithium ion battery capacitor and preparation method thereof |
| WO2020233407A1 (en) * | 2019-05-22 | 2020-11-26 | 青岛九环新越新能源科技股份有限公司 | Hybrid power energy storage cell, unit, module, and device, and control method |
| CN114524471A (en) * | 2022-04-22 | 2022-05-24 | 宜宾锂宝新材料有限公司 | Low-residual-alkali high-nickel ternary cathode material, and preparation method and application thereof |
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