CN104319115A - Method for pre-burying of negative electrode of hybrid super capacitor - Google Patents
Method for pre-burying of negative electrode of hybrid super capacitor Download PDFInfo
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- CN104319115A CN104319115A CN201410336412.2A CN201410336412A CN104319115A CN 104319115 A CN104319115 A CN 104319115A CN 201410336412 A CN201410336412 A CN 201410336412A CN 104319115 A CN104319115 A CN 104319115A
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- lithium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
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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
- Y02E60/13—Energy storage using capacitors
Abstract
The invention discloses a method for the pre-burying of the negative electrode of a hybrid super capacitor, and belongs to the technical field of electrochemical energy. The hybrid super capacitor takes a multi-pore carbon material as a positive active material, an embeddable carbon material or an embeddable metallic oxide as a negative active material and an organolithium saline solution as an electrolyte. In a first formation process, the secondary addition of high concentration electrolyte is added to the hybrid super capacitor in a quiescent time of charging, so as to make up for the absorption loss of the reduction of ionic concentration of the electrolyte, which cannot be inversely buried, and the irreversibility of a positive electrode in the first charging process, thereby enabling the reduction amplitude of concentration of the electrolyte to be small.
Description
Technical field
The present invention relates to electrochemical energy technical field, relate to a kind of pre-embedding lithium method of hybrid super capacitor negative pole specifically.
Background technology
Along with sharp increase and the socioeconomic fast development of population, resource and the energy are day by day short, and environmental protection comes into one's own day by day, and the exploitation of the energy and saving become an important topic of the world today.The energy is the basis of human society Existence and development, and the society based on fossil energy meets with energy shortage and environmental pollution crisis more and more continually.Meanwhile, along with the arriving of information-based cyberage, energy source use form changes, and renewable, pollution-free, small-sized discrete removable high-performance power supply requirement increases fast.In the market common cell system as: the primary cells such as alkali manganese, silver-colored zinc, its common features such as plumbic acid, NI-G, ni-mh, lithium ion battery have higher energy density, but their power density is very low, and the charging interval is long.Thus many energy storage device applications higher to power density requirements (as space industry and sophisticated weapon equipment etc.), these traditional storage batterys not can satisfy the demands.Therefore people wait in expectation and have the appearance of high-energy, high power, long-life novel green energy storage device.
In recent years, a kind of model electrochemical hybrid capacitor be made up of electric double layer capacitance polarizing electrode and secondary cell unpolarized electrode becomes research and development focus gradually, active carbon/NiOOH alkalescence hybrid super capacitor takes the lead in achieving industrialization development, compared with alkaline charcoal/charcoal electric double layer capacitance, its specific energy is with the obvious advantage.For pursuing higher specific energy and specific power characteristic, a kind of positive pole adopts porous carbon material (or conducting polymer or its compound), negative pole adopts the non-aqueous system electrochemistry hybrid super capacitor of Lithium-ion embeding and deintercalation material to arise at the historic moment, because its negative pole adopts the energy storage mechnism identical with lithium-ion battery system, the people such as the Osamu Hatozaki of Fuji Heavy SUBARU Technical Research Center are referred to as lithium ion super capacitor.For embedding cathode of lithium/active carbon hybrid super capacitor, its working mechanism is: during charging, differs lithium intercalation compound in the Lithium-ion embeding in organic electrolyte to negative pole, and the anion in electrolyte is then adsorbed on active carbon positive electrode surface and forms electric double layer; And when discharging, lithium ion is deviate from from negative material, the electric double layer that positive pole and electrolyte interface produce dissociates, and anion discharges from positive electrode surface.According to the difference of adopted negative pole intercalation materials of li ions, lithium ion super electric capacity mainly can be divided into two classes, i.e. metal oxide/active carbon electrochemistry mixing electric capacity mixes electric capacity with carbonaceous intercalation materials of li ions/active carbon electrochemistry.
From 2000, it was positive pole with active carbon that the people such as T.Morimoto report a kind of, and to mix lithium graphite be the lithium salts mixed solution of negative pole 1mol/L is the hybrid capacitor of electrolyte, and its operating voltage interval can reach 3-4.2V, 2002, they have assembled out specific energy 16Wh/l, the flexible package electric capacity of specific power 500W/l, but capacity attenuation reaches 40% after circulation in 4000 weeks, in December, 2006, the people such as the Osamu Hatozaki of Fuji Heavy SUBARU Technical Research Center report a kind of embedding lithium carbonaceous material/active carbon lithium ion super capacitor in the 16th international electric capacity annual meeting, its specific energy can reach 12-30Wh/kg, after 300000 circulations, capability retention is more than 96%, this lithium ion super electric capacity has so excellent charge-discharge performance, have benefited from the pre-embedding lithium process (pre-doping) of carbonaceous material.
Irreversible embedding lithium in various degree is all there is in the embedding lithium electrode of major part in first charge-discharge process, in lithium ion super capacitor system, this electrochemical behavior also can cause the anion of identical molal quantity in the Irreversible Adsorption of positive-active carbon surface simultaneously, cause the reduction of electrolyte body ion concentration and the decay of capacitance, have a strong impact on the charge-discharge performance of electric capacity system.Anticathode carries out the pre-embedding lithium of certain depth.Can solve the problem on the one hand, the intercalation potential of negative pole can also be made to tend towards stability on the other hand more smooth, these all will improve the charge-discharge characteristic (as efficiency, capacity, cyclical stability and high-rate performance etc.) of lithium ion super electric capacity.
In fact, G.G.Amatucci research group and T.Morimoto group have also all used pre-embedding lithium technology in the assembling of new type lithium ion ultracapacitor, but the method for the method that they adopt and Fuji Heavy SUBARU Technical Research Center is similar, all using lithium metal as the 3rd pole, by the method for external short circuit, realize the pre-embedding lithium of negative pole.
But there is many shortcomings in the method: lithium metal is introduced electric capacity system as a pole and easily brought safety problem, and it is harsh that electrode manufacturing process becomes very complicated assembling environmental requirement; External short circuit process not easily manipulates, if control improper, easily causes electrode failure; The electrolyte that electric capacity system need nearly double and barrier film are for pre-embedding lithium technique etc.
Summary of the invention
The present invention, in order to overcome the deficiencies in the prior art, provides a kind of hybrid super capacitor negative pole pre-embedding lithium method, its objective is the problem that the concentration of electrolyte attenuation amplitude that solves existing hybrid super capacitor is large.
In order to solve above-mentioned technical problem, the basic technical scheme that the present invention proposes is: a kind of pre-embedding lithium method of hybrid super capacitor negative pole, taking porous carbon material as positive active material, with can embedding lithium carbonaceous material or can embedding lithium metal oxide for negative electrode active material, in the hybrid super capacitor being electrolyte with organic lithium salt solution, in formation process first, utilize quiescent time of charging, in this hybrid super capacitor, carry out secondary add high concentration electrolyte, with in supplementary initial charge process, the reduction of irreversible embedding lithium electrolyte body ion concentration and anion are at the irreversible adsorption loss of positive pole, the amplitude that concentration of electrolyte is reduced reduces.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described porous carbon material is one or several in active carbon powder, activated carbon fiber, charcoal-aero gel, carbon nano-tube and carbon black.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described can embedding lithium carbonaceous material be at least one in graphite, hard carbon, Graphene, MCMB, intermediate-phase carbon fiber and high polymer pyrolytic carbon.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described can embedding lithium metal oxide be one in molybdenum oxide and lithium-titanium composite oxide or two kinds.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described organic lithium salt electrolyte comprises solute, solvent and film for additive.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described solute is at least one in lithium hexafluoro phosphate, lithium perchlorate, LiBF4, perfluoro alkyl sulfonic acid lithium, perfluoro alkyl sulfonic acid imide li, fluoroalkyl sulfonic acids acyl lithium methide, organic boric acid ester lithium (as LiBOB), organic phosphoric acid lithium.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described organic boric acid ester lithium is dioxalic acid lithium borate.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described solvent comprise in vinyl carbonate, propylene carbonate, dimethyl carbonate, methyl ethyl carbonate and diethyl carbonate one or more.
In the pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, described film for additive is vinylene carbonate, ethylene sulfite, propylene sulfite, 1, the one in 3 propane sultone, ethyl sulfate, fluorinated ethylene carbonate.
The invention has the beneficial effects as follows: it is the empty voltage produced for eliminating charging process that technological means of the present invention adopts formation process first to arrange quiescent phase, the intercalation potential being conducive to negative pole tends to be steady, and utilize the quiescent phase time that hybrid capacitor secondary interpolation high concentration electrolyte not only can be supplemented the electrolyte lost in irreversible embedding lithium, maintain concentration of electrolyte constant as far as possible, but also make full use of blank time, save the time that changes into and in time the gas that SEI film forming process produces extracted out; The capacity improving mixed capacitor is also contributed to high concentration electrolyte; In addition, technological means of the present invention is safer, and controllability is better, and cost is lower, more saves time.
Accompanying drawing explanation
Fig. 1 is embodiment one second time and third time charging and discharging curve when 1.5C;
Fig. 2 is the charging and discharging curve of embodiment one at 3C, 1V-2.5V;
Fig. 3 is the charging and discharging curve of embodiment one at 7C, 1V-2.7V;
Fig. 4 is embodiment two and embodiment three take active carbon as positive active material, and what Delanium and carbonaceous mesophase spherules were respectively the hybrid super capacitor of negative electrode active material changes into curve first;
Fig. 5 is be positive active material with active carbon in embodiment four, and hard charcoal is the charging and discharging curve of hybrid super capacitor when charging and discharging curve and double electric layer capacitor are at 0-3V for the second time for 1.5V-4.5V of negative electrode active material.
Embodiment
Below with reference to accompanying drawing 1 to accompanying drawing 5, the present invention is described further, but should not limit the scope of the invention with this.
The pre-embedding lithium method of hybrid super capacitor negative pole of the present invention, taking porous carbon material as positive active material, with can embedding lithium carbonaceous material or can embedding lithium metal oxide for negative electrode active material, in the hybrid capacitor being electrolyte with organic lithium salt solution, in formation process first, utilize quiescent time of charging, in this hybrid capacitor, carry out secondary add high concentration electrolyte, with the reduction of electrolyte body ion concentration in embedding lithium irreversible in supplementary initial charge process and anion at the irreversible adsorption loss of positive pole, the amplitude that concentration of electrolyte is reduced reduces.
Embodiment one
Take active carbon as positive active material, lithium titanate is negative electrode active material, adopts the model of NKK company research and development to be the barrier film of TF4035 to be the barrier film of lithium ion super electric capacity.Electrolyte adopts with 1.2M lithium perchlorate as main solute, organic boric acid ester lithium is auxiliary solute, vinyl carbonate, dimethyl carbonate, methyl ethyl carbonate are solvent, film for additive is vinylene carbonate, 1,3 propane sultone, controls positive, negative electrode plate surface density, be 3.5: 1 by anode and cathode active materials mass ratio, separated by positive and negative plate barrier film and be combined into battery core with lamination process, then battery core positive and negative electrode soldering polar ear, rubberizing, battery core is through overheated shaping of colding pressing; Reinstall in aluminum plastic membrane shell, closedtop, side seal mouth, drying; In glove box, note 1.2M lithium perchlorate electrolyte and seal, 40 DEG C of ageing certain hours, then static 0.5h when certain multiplying power charges to 2.5V, 2.7V, 2.8V, at this moment electric capacity sample is brought back glove box, in sample, electrolyte is added after cutting off side sealing, in the charge and discharge potential interval of 1.5C multiplying power, 2.8V-1V, the discharge capacity 128mAh of capacitor, internal resistance about 13 milliohm, charging and discharging curve symmetry is good, efficiency for charge-discharge close to 100%, about 16wh/kg (quality is monolithic capacitor gross mass).
Embodiment two
Take active carbon as positive active material, graphite is negative electrode active material, and employing individual layer PP, individual layer PE, multilayer PP and PE compound microporous film material are the barrier film of lithium ion super electric capacity.Electrolyte adopts with 1.25M lithium hexafluoro phosphate as solute, solvent is vinyl carbonate, propylene carbonate, methyl ethyl carbonate, dimethyl carbonate, film for additive is vinylene carbonate, 1,3 propane sultone, control positive, negative electrode plate surface density, be 6.5: 1 by anode and cathode active materials mass ratio, positive and negative plate barrier film separated and is combined into battery core with lamination process, then battery core positive and negative electrode soldering polar ear, rubberizing, battery core is through overheated shaping of colding pressing; Reinstall in aluminum plastic membrane shell, closedtop, side seal mouth, drying; In glove box, note electrolyte and seal, 40 DEG C of ageing certain hours, then static 0.5-1.5h when 0.05C charges to 3.0V, 3.5V, 4.0V, at this moment electric capacity sample is brought back glove box, in sample, 1.25M lithium hexafluorophosphate electrolyte solution is added after cutting off side sealing, in the charge and discharge potential interval of 4V-1.5V, the charging and discharging curve symmetry after changing into first is good, and efficiency for charge-discharge is close to 100%.
Embodiment three
Take active carbon as positive active material, carbonaceous mesophase spherules (MCMB) is negative electrode active material, and employing individual layer PP, individual layer PE, multilayer PP and PE compound microporous film material are the barrier film of lithium ion super electric capacity.Electrolyte adopts with 1.25M lithium hexafluoro phosphate as solute, solvent is vinyl carbonate, diethyl carbonate, dimethyl carbonate, film for additive is vinylene carbonate, 1,3 propane sultone, control positive, negative electrode plate surface density, be 6.5: 1 by anode and cathode active materials mass ratio, positive and negative plate barrier film separated and is combined into battery core with lamination process, then battery core positive and negative electrode soldering polar ear, rubberizing, battery core is through overheated shaping of colding pressing; Reinstall in aluminum plastic membrane shell, closedtop, side seal, drying; Then in glove box, note electrolyte and seal, 40 DEG C of ageing certain hours, static 0.5-1.5h when 0.05C charges to 3.0V, 3.5V, 4.0V, at this moment brings back glove box by electric capacity sample, adds 1.25M LiPF after cutting off side sealing in sample
6, in the charge and discharge potential interval of 4V-1.5V, the charging and discharging curve symmetry after changing into first is good, and efficiency for charge-discharge is close to 100%.
Embodiment four
Take active carbon as positive pole, hard carbon is negative pole, and employing individual layer PP, individual layer PE, multilayer PP and PE compound microporous film material are the barrier film of lithium ion super electric capacity.Electrolyte adopts with 1.25M lithium hexafluoro phosphate, solvent is vinyl carbonate and dimethyl carbonate, control positive, negative electrode plate surface density, be 6.5: 1 by anode and cathode active materials mass ratio, positive and negative plate barrier film is separated and is combined into battery core with lamination process, then battery core positive and negative electrode soldering polar ear, rubberizing, battery core is through overheated shaping of colding pressing; Reinstall in aluminum plastic membrane shell, closedtop, side seal mouth, drying; Then in glove box, note electrolyte and seal, 40 DEG C of ageing certain hours, static 0.5-1.5h when 0.05C charges to 3.0V, 3.5V, 4.0V, at this moment electric capacity sample is brought back glove box, in sample, 1.25M lithium hexafluoro phosphate is added after cutting off side sealing, in the charge and discharge potential interval of 4V-1.5V, the charging and discharging curve symmetry after changing into first is good, and efficiency for charge-discharge is close to 100%.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned execution mode and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (9)
1. the pre-embedding lithium method of hybrid super capacitor negative pole, taking porous carbon material as positive active material, with can embedding lithium carbonaceous material or can embedding lithium metal oxide for negative electrode active material, in the hybrid super capacitor being electrolyte with organic lithium salt solution, it is characterized in that: in formation process first, utilize quiescent time of charging, in this hybrid super capacitor, carry out secondary add high concentration electrolyte, with in supplementary initial charge process, the reduction of irreversible embedding lithium electrolyte body ion concentration and anion are at the irreversible adsorption loss of positive pole, the amplitude that concentration of electrolyte is reduced reduces.
2. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 1, is characterized in that: described porous carbon material is one or several in active carbon powder, activated carbon fiber, charcoal-aero gel, carbon nano-tube and carbon black.
3. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 1, is characterized in that: described can embedding lithium carbonaceous material be at least one in graphite, hard carbon, Graphene, MCMB, intermediate-phase carbon fiber and high polymer pyrolytic carbon.
4. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 1, is characterized in that: described can embedding lithium metal oxide be one in molybdenum oxide and lithium-titanium composite oxide or two kinds.
5. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 1, is characterized in that: described organic lithium salt electrolyte comprises solute, solvent and film for additive.
6. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 5, is characterized in that: described solute is at least one in lithium hexafluoro phosphate, lithium perchlorate, LiBF4, perfluoro alkyl sulfonic acid lithium, perfluoro alkyl sulfonic acid imide li, fluoroalkyl sulfonic acids acyl lithium methide, organic boric acid ester lithium (as LiBOB), organic phosphoric acid lithium.
7. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 6, is characterized in that: described organic boric acid ester lithium is dioxalic acid lithium borate.
8. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 5, is characterized in that: described solvent comprise in vinyl carbonate, propylene carbonate, dimethyl carbonate, methyl ethyl carbonate and diethyl carbonate one or more.
9. the pre-embedding lithium method of hybrid super capacitor negative pole as claimed in claim 5, it is characterized in that: described film for additive is vinylene carbonate, ethylene sulfite, propylene sulfite, 1, the one in 3 propane sultone, ethyl sulfate, fluorinated ethylene carbonate.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355457A (en) * | 2015-12-16 | 2016-02-24 | 上海奥威科技开发有限公司 | Lithium ion capacitor and formation method thereof |
| CN105819416A (en) * | 2016-03-14 | 2016-08-03 | 上海奥威科技开发有限公司 | Preparation method for bio-based porous carbon and application of bio-based porous carbon to supercapacitor |
| CN106158413A (en) * | 2016-08-30 | 2016-11-23 | 湖北长海新能源科技有限公司 | Lithium-ion capacitor |
| FR3054366A1 (en) * | 2016-07-25 | 2018-01-26 | Blue Solutions | PROCESS FOR THE PREPARATION OF A CYLINDRICAL METAL ALKALINE-ION HYBRID SUPERCONDENSOR |
| CN108133835A (en) * | 2017-12-21 | 2018-06-08 | 惠州市鸣曦科技有限公司 | A kind of electrolytic solution for super capacitor and its ultracapacitor of preparation |
| CN109545563A (en) * | 2019-01-15 | 2019-03-29 | 麻城市天力科技有限公司 | A kind of electrolyte for capacitor |
| CN109560339A (en) * | 2018-11-27 | 2019-04-02 | 中国科学院青岛生物能源与过程研究所 | A kind of pre- embedding anion method and full battery |
| CN109638366A (en) * | 2018-11-23 | 2019-04-16 | 天津市捷威动力工业有限公司 | A kind of lithium ion battery benefit lithium method |
| CN109659140A (en) * | 2017-10-11 | 2019-04-19 | 中国科学院大连化学物理研究所 | Lithium ion super capacitor cathode pre-embedding lithium method |
| CN109801796A (en) * | 2019-01-11 | 2019-05-24 | 东莞凯德新能源有限公司 | A kind of cathode pre-embedding lithium method and capacitor and production method |
| WO2020124328A1 (en) * | 2018-12-17 | 2020-06-25 | 深圳先进技术研究院 | Pre-lithiated negative electrode fabrication method, fabricated pre-lithiated negative electrode, energy storage device, energy storage system, and electrical device |
| DE102016000058B4 (en) | 2015-01-06 | 2020-07-09 | Ningbo Crrc New Energy Technology Co., Ltd. | Process for step-like vacuum formatting of a lithium-ion capacitor battery |
| CN112103554A (en) * | 2020-08-06 | 2020-12-18 | 双登集团股份有限公司 | Three-electrode repairable lithium ion battery |
| CN113889344A (en) * | 2020-07-02 | 2022-01-04 | 中车青岛四方车辆研究所有限公司 | Formation method of lithium ion capacitor |
| WO2023070268A1 (en) * | 2021-10-25 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Electrochemical device and power consumption apparatus comprising same |
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| DE102016000058B4 (en) | 2015-01-06 | 2020-07-09 | Ningbo Crrc New Energy Technology Co., Ltd. | Process for step-like vacuum formatting of a lithium-ion capacitor battery |
| CN105355457A (en) * | 2015-12-16 | 2016-02-24 | 上海奥威科技开发有限公司 | Lithium ion capacitor and formation method thereof |
| CN105819416A (en) * | 2016-03-14 | 2016-08-03 | 上海奥威科技开发有限公司 | Preparation method for bio-based porous carbon and application of bio-based porous carbon to supercapacitor |
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| CN108133835A (en) * | 2017-12-21 | 2018-06-08 | 惠州市鸣曦科技有限公司 | A kind of electrolytic solution for super capacitor and its ultracapacitor of preparation |
| CN109638366A (en) * | 2018-11-23 | 2019-04-16 | 天津市捷威动力工业有限公司 | A kind of lithium ion battery benefit lithium method |
| CN109560339A (en) * | 2018-11-27 | 2019-04-02 | 中国科学院青岛生物能源与过程研究所 | A kind of pre- embedding anion method and full battery |
| WO2020124328A1 (en) * | 2018-12-17 | 2020-06-25 | 深圳先进技术研究院 | Pre-lithiated negative electrode fabrication method, fabricated pre-lithiated negative electrode, energy storage device, energy storage system, and electrical device |
| CN109801796A (en) * | 2019-01-11 | 2019-05-24 | 东莞凯德新能源有限公司 | A kind of cathode pre-embedding lithium method and capacitor and production method |
| CN109801796B (en) * | 2019-01-11 | 2021-01-22 | 东莞凯德新能源有限公司 | Negative electrode lithium pre-embedding method, capacitor and manufacturing method |
| CN109545563A (en) * | 2019-01-15 | 2019-03-29 | 麻城市天力科技有限公司 | A kind of electrolyte for capacitor |
| CN113889344A (en) * | 2020-07-02 | 2022-01-04 | 中车青岛四方车辆研究所有限公司 | Formation method of lithium ion capacitor |
| CN113889344B (en) * | 2020-07-02 | 2023-05-16 | 中车青岛四方车辆研究所有限公司 | Lithium ion capacitor formation method |
| CN112103554A (en) * | 2020-08-06 | 2020-12-18 | 双登集团股份有限公司 | Three-electrode repairable lithium ion battery |
| WO2023070268A1 (en) * | 2021-10-25 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Electrochemical device and power consumption apparatus comprising same |
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