CN112216524A - Water system buckle type super capacitor - Google Patents
Water system buckle type super capacitor Download PDFInfo
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- CN112216524A CN112216524A CN202011093392.2A CN202011093392A CN112216524A CN 112216524 A CN112216524 A CN 112216524A CN 202011093392 A CN202011093392 A CN 202011093392A CN 112216524 A CN112216524 A CN 112216524A
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- positive
- shell
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- plate
- super capacitor
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- 239000003990 capacitor Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 239000011888 foil Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 abstract description 3
- 239000007772 electrode material Substances 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910019338 NaMnO2 Inorganic materials 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004758 underpotential deposition Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/22—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G11/78—Cases; Housings; Encapsulations; Mountings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
A water system buckle type super capacitor belongs to the technical field of electric elements and comprises a positive electrode shell, a negative electrode shell, an insulating tape, a battery cell and electrolyte; the positive shell and the negative shell form a space for placing the battery core, and the joint of the positive shell and the negative shell is sealed by an insulating tape to form a closed space; the square battery cell is formed by overlapping a positive plate, a negative plate and a diaphragm according to the positive plate/diaphragm/negative plate and rolling the positive plate/diaphragm/negative plate in an S shape, and welding the positive plate on a positive shell and welding the negative plate on a negative shell; the battery core is arranged in the closed space formed by the positive and negative electrode shells. The invention adopts the pseudo-capacitance mechanism to adopt the electric core with the water system square structure, improves the space utilization rate, reduces the conducting distance of electrolyte ions, ensures the stability and solves the problems of low capacity and short endurance time in the actual use of the super capacitor.
Description
Technical Field
The invention belongs to the technical field of electrical elements, and particularly relates to a water system button type super capacitor.
Background
As a novel energy storage device, the super capacitor has a novel energy storage device which is charged and discharged rapidly between a traditional capacitor and a secondary battery, and has wide application prospects in aerospace, digital communication, electric power peak clipping and valley filling, intelligent instruments, wind power generation intelligent pitch control, oil-electricity mixing and pure electric vehicles due to the characteristics of high energy density, high power density, excellent cycle performance and the like.
Due to the different mechanisms, the industry divides supercapacitors into: 1. the pseudocapacitance (Faraday capacitance) is based on the fact that electrode active substances in an electrode material or a bulk phase are subjected to underpotential deposition or chemical desorption, highly reversible oxidation-reduction reaction is generated, and capacitance related to the charge and discharge potentials of an electrode is generated. 2. The electric double layer capacitor is a capacitor for storing electric energy based on an electric double layer capacitor generated by interface charge separation between an activated carbon electrode material having a high specific area and an electrolyte. 3. The hybrid electrochemical capacitor is composed of two different types of electrode materials as a positive electrode and a negative electrode, wherein one electrode has the characteristic of double electric layer capacitance, and the other electrode has the characteristic of Faraday capacitance, so that the capacitance with high power density and energy density is realized.
Nowadays, the world is facing a series of problems and challenges related to environment and energy, such as the occurrence of phenomena of 'PM 2.5', greenhouse effect, haze and the like, and academic research and industrial manufacturing are promoted to jointly focus on developing green and safe energy storage devices with water systems as sources, so that the method has a very important significance in adapting to the current and even sustainable innovation development.
Whether electrode materials of the super capacitor are easy to obtain, how the theoretical capacity is, matching of an electrolyte system and management and control of all links of a manufacturing process are the prerequisites of realizing high energy density, power density, long cycle life and a high cost performance device.
How to change the structure of the super capacitor, improve the space utilization rate, reduce the distance of electrolyte ion conduction, ensure the stability of the problem device, and improve the capacity of the aqueous super capacitor is the problem that we want to solve.
Disclosure of Invention
The invention aims to provide a button type water system super capacitor, which adopts a pseudo-capacitance mechanism water system square structure battery cell and solves the problems of low capacity and short endurance time in the actual use of a device.
The invention is realized by the following technical scheme.
The invention relates to a water system buckle type super capacitor which comprises a positive electrode shell, a negative electrode shell, an insulating tape, a battery cell and electrolyte.
The positive shell and the negative shell form a space for placing the battery core, the joint of the positive shell and the negative shell is sealed by the insulating tape, and a closed space can be formed by stamping through a die.
The square battery cell is formed by overlapping a positive plate, a negative plate and a diaphragm according to the positive plate/diaphragm/negative plate and rolling the positive plate/diaphragm/negative plate in an S shape, and the positive plate is welded on the positive shell and the negative plate is welded on the negative shell.
Preferably, a lining foil is added between the blank part of the square cell positive plate and the positive shell and between the blank part of the negative plate and the negative shell during welding, so that the contact area is enlarged and the impedance is reduced.
The battery core is arranged in the closed space formed by the positive and negative electrode shells.
The current collectors of the positive plate and the negative plate of the square battery core can be selected from double-sided smooth aluminum foils, corrosion aluminum foils, carbon-coated aluminum foils, stainless steel meshes, nickel foils or foamed nickel.
The electrolyte is 21mol/L lithium bistrifluoromethanesulfonimide (LiTFSI), and weak acid electrolyte or salt solution electrolyte with other molar ratios can be selected.
The diaphragm is polypropylene microporous hydrophilic diaphragm (PPDG), preferably PPDG085 series microporous diaphragm with pore diameter of 0.22 μm and thickness of 100 μm.
The invention adopts the pseudo-capacitance mechanism to adopt the electric core with the water system square structure, improves the space utilization rate, reduces the conducting distance of electrolyte ions, ensures the stability and solves the problems of low capacity and short endurance time in the actual use of the super capacitor.
Drawings
Fig. 1 is a schematic structural view of the present invention. Wherein, 1 is a negative electrode shell, 2 is a diaphragm, 3 is a negative electrode plate, 5 is a positive electrode plate, 6 is a positive electrode shell, 7 is electrolyte, and 8 is an insulating tape.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather construed as limited to the embodiments set forth herein.
The embodiment of the invention provides a water system button super capacitor, and the structural characteristics and the functions of specific parts of the water system button super capacitor are described in detail below.
The water system button-type super capacitor comprises: the battery comprises a positive electrode shell 6, a negative electrode shell 1, a positive electrode sheet 5, a negative electrode sheet 3, a diaphragm 2, electrolyte 7 and an insulating tape 8.
The positive shell 6, the negative shell 1 and the insulating tape 8 are punched into button-shaped shapes, wherein the negative shell 1 is approximately inverted and is made of a 'plate' -shaped stainless steel metal piece, the positive shell 6 is made of a 'barrel' -shaped stainless steel metal piece, the insulating tape 8 embedded in the middle is a silica gel O-shaped ring, and a closed space is formed by the mutual action of punching force.
The positive plate 5 is made of 16 mu m carbon-coated aluminum foil, cut into long strips and coated with NaMnO2Active material, and a certain welding blank reserving position is reserved.
The negative plate 3 is made of 16-micron carbon-coated aluminum foil, cut into strips, coated with AC active substances and reserved with certain welding blank positions.
The diaphragm 2 is selected from the following models: the polypropylene microporous hydrophilic diaphragm PPDG085 series microporous membranes are cut into strips, the width of the diaphragm 2 is larger than the sizes of the positive plate 5 and the negative plate 3, and the length of the diaphragm is larger than the sizes of the positive plate 5 and the negative plate 3. The diaphragm 2, the positive plate 5 and the negative plate 3 are overlapped according to the positive plate/the diaphragm/the negative plate, then S-shaped winding is carried out, and polyimide high-temperature adhesive tapes are used for pasting and compacting after winding.
The battery core is sent to a flat pressing machine with the temperature of 60 ℃ and the air source pressure of 5Kpa for flat pressing for 2min, then the multimeter is rotated to the position of 20k omega in omega gear, the red and black meter bars are respectively contacted with the negative plate 3 and the positive plate 5, and the display screen of the multimeter displays OL. The cell is then placed in the middle of the positive housing 6.
The blank-keeping position of the negative plate 3 and the carbon-coated aluminum foil with the same size are welded on the negative shell 1 by adopting a single-needle alternating current pulse spot welding machine, and the blank-keeping position of the positive plate 5 and the carbon-coated aluminum foil with the same size are welded on the positive shell 6 by adopting the single-needle alternating current pulse spot welding machine.
The electrolyte 7 is 21mol/L lithium bistrifluoromethanesulfonimide (LiTFSI), the injection amount is about 5-10ml, the solution is kept stand for 5min, and the cell is the most basic standard.
The O-shaped ring type insulating tape 8 is placed between the negative electrode shell 1 and the positive electrode shell 6, and is punched into the button-shaped single super capacitor by using a sealing machine. The O-shaped ring type insulating tape 8 has a certain buffering function during stamping, is mainly sealed and isolated from the outside to form a closed system, and prevents the electronic short circuit of the anode shell 1 and the cathode shell 6.
Claims (6)
1. A water system buckle type super capacitor is characterized by comprising a positive electrode shell, a negative electrode shell, an insulating tape, a battery cell and electrolyte; the positive shell and the negative shell form a space for placing the battery core, and the joint of the positive shell and the negative shell is sealed by an insulating tape to form a closed space; the square battery cell is formed by overlapping a positive plate, a negative plate and a diaphragm according to the positive plate/diaphragm/negative plate and rolling the positive plate/diaphragm/negative plate in an S shape, and welding the positive plate on a positive shell and welding the negative plate on a negative shell; the battery core is arranged in the closed space formed by the positive and negative electrode shells.
2. The water system button type super capacitor as claimed in claim 1, wherein the current collectors of the positive and negative plates of the square battery cell are double-sided smooth aluminum foil, etched aluminum foil, carbon-coated aluminum foil, stainless steel mesh, nickel foil or foamed nickel.
3. The water system button super capacitor as claimed in claim 1, wherein the electrolyte is 21mol/L lithium bis (trifluoromethanesulfonyl) imide, or weak acid electrolyte or salt solution electrolyte.
4. The water system button super capacitor as claimed in claim 1, wherein the membrane is a polypropylene microporous hydrophilic membrane.
5. The water system button type super capacitor as claimed in claim 4, wherein the diaphragm is a polypropylene microporous hydrophilic diaphragm with a pore size of 0.22 μm and a thickness of 100 μm.
6. The water system button type super capacitor as claimed in claim 1, wherein a lining foil is added when welding between the blank space of the positive plate of the square cell and the positive shell and between the blank space of the negative plate and the negative shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093392.2A CN112216524A (en) | 2020-10-14 | 2020-10-14 | Water system buckle type super capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093392.2A CN112216524A (en) | 2020-10-14 | 2020-10-14 | Water system buckle type super capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112216524A true CN112216524A (en) | 2021-01-12 |
Family
ID=74053346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011093392.2A Pending CN112216524A (en) | 2020-10-14 | 2020-10-14 | Water system buckle type super capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112216524A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165828A (en) * | 2007-08-29 | 2008-04-23 | 李青海 | Buckle type electrochemical capacitor and its manufacture method |
| CA2730035A1 (en) * | 2008-07-11 | 2010-01-14 | Nelly Giroud | Ionic liquid electrolytes that include an anionic surfactant and electrochemical devices such as storage batteries comprising them |
| CN103065812A (en) * | 2012-12-18 | 2013-04-24 | 宁夏集盛星泰新能源科技有限公司 | Upper cover portion of buckling-type double-electric-layer capacitor |
| CN203179700U (en) * | 2012-12-18 | 2013-09-04 | 宁夏集盛星泰新能源科技有限公司 | Buckling-type double electric layer capacitor |
| CN203673975U (en) * | 2014-01-11 | 2014-06-25 | 宁波南车新能源科技有限公司 | Cell structure of square supercapacitor |
| CN203941816U (en) * | 2014-07-02 | 2014-11-12 | 长沙国容新能源有限公司 | A kind of button ultracapacitor |
| CN204088073U (en) * | 2014-09-03 | 2015-01-07 | 深圳市鸣曦电子有限公司 | Button super capacitor |
| CN106128803A (en) * | 2016-08-31 | 2016-11-16 | 福建火炬电子科技股份有限公司 | The preparation method of button electrode and components and parts and the preparation method with this button electrode |
| CN108493006A (en) * | 2018-03-12 | 2018-09-04 | 山东大学 | A kind of preparation method of manganous silicate/button-shaped ultracapacitor of carbon water system |
| CN109887756A (en) * | 2018-12-24 | 2019-06-14 | 西安力能新能源科技有限公司 | A kind of lamination type electric core and the coin shape lithium-ion capacitor with the battery core |
-
2020
- 2020-10-14 CN CN202011093392.2A patent/CN112216524A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165828A (en) * | 2007-08-29 | 2008-04-23 | 李青海 | Buckle type electrochemical capacitor and its manufacture method |
| CA2730035A1 (en) * | 2008-07-11 | 2010-01-14 | Nelly Giroud | Ionic liquid electrolytes that include an anionic surfactant and electrochemical devices such as storage batteries comprising them |
| CN103065812A (en) * | 2012-12-18 | 2013-04-24 | 宁夏集盛星泰新能源科技有限公司 | Upper cover portion of buckling-type double-electric-layer capacitor |
| CN203179700U (en) * | 2012-12-18 | 2013-09-04 | 宁夏集盛星泰新能源科技有限公司 | Buckling-type double electric layer capacitor |
| CN203673975U (en) * | 2014-01-11 | 2014-06-25 | 宁波南车新能源科技有限公司 | Cell structure of square supercapacitor |
| CN203941816U (en) * | 2014-07-02 | 2014-11-12 | 长沙国容新能源有限公司 | A kind of button ultracapacitor |
| CN204088073U (en) * | 2014-09-03 | 2015-01-07 | 深圳市鸣曦电子有限公司 | Button super capacitor |
| CN106128803A (en) * | 2016-08-31 | 2016-11-16 | 福建火炬电子科技股份有限公司 | The preparation method of button electrode and components and parts and the preparation method with this button electrode |
| CN108493006A (en) * | 2018-03-12 | 2018-09-04 | 山东大学 | A kind of preparation method of manganous silicate/button-shaped ultracapacitor of carbon water system |
| CN109887756A (en) * | 2018-12-24 | 2019-06-14 | 西安力能新能源科技有限公司 | A kind of lamination type electric core and the coin shape lithium-ion capacitor with the battery core |
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Application publication date: 20210112 |
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