CN204407412U - A kind of pole piece, energy storage device - Google Patents
A kind of pole piece, energy storage device Download PDFInfo
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- CN204407412U CN204407412U CN201520062098.3U CN201520062098U CN204407412U CN 204407412 U CN204407412 U CN 204407412U CN 201520062098 U CN201520062098 U CN 201520062098U CN 204407412 U CN204407412 U CN 204407412U
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- grid
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- resin glue
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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
Abstract
The utility model discloses a kind of pole piece, energy storage device, energy storage device, comprise the contraposition coarctate positive electrode of heat and negative material; Described positive electrode and negative material include pole piece and colloidal electrolyte, or the one in described positive electrode and negative material comprises pole piece and colloidal electrolyte, and another one is the collector that surface-coated has active material.Described pole piece comprises collector, resin glue grid and active material; Described resin glue grid is hydrophobic resin glue grid, and arrange on a current collector, described active material is arranged in each cell space of described resin glue grid.Energy storage device of the present utility model, has tailorability, can meet miniaturization, personalized application demand, and have high reliability and fast charging and discharging characteristic.
Description
[technical field]
The utility model relates to electrochemical field, particularly relates to a kind of pole piece, energy storage device.
[background technology]
After entering 21 century, the searching of new green power has become with exploitation the optimal selection tackling lack of energy, ecological deterioration two large problems, and current new green power mainly contains solar energy, wind energy, nuclear energy etc.Energy storage device is then a kind of common device that can carry out the energy storing conversion better, is successfully applied in the fields such as means of transportation, wireless telecommunications system, electrical network, consumer electronics industry.
Current energy storage device, such as battery, capacitor, ultracapacitor etc., generally comprise positive plate, negative plate, barrier film, electrolyte and shell.During preparation, first at collector (Copper Foil, aluminium foil) upper coating active material obtained positive plate and negative plate respectively, then by loading in shell after positive plate, barrier film, the stacked winding of negative plate, finally in shell, inject electrolyte.Obtained energy storage device, the cross section structure of pole piece barrier film is stacked sandwich layer structure, and total is placed in electrolyte.Current this energy storage device is in the process of application, and the subject matter of existence has: the first, and size, volume are comparatively large, can not meet that current electronic equipment is lightening, the application demand of miniaturization.The second, reliability is poor, and when being subject to ambient pressure, vibration, the electric property of device significantly declines, compressive resistance poor-performing.The problem of electrolyte leakage is often there is in addition when foreign impacts.In addition, as a kind of element of energy storage, the electric property how promoting energy storage device is also the direction that people make great efforts.
[utility model content]
Technical problem to be solved in the utility model is: make up above-mentioned the deficiencies in the prior art, a kind of pole piece, energy storage device are proposed, pole piece is used in energy storage device, energy storage device has tailorability, miniaturization, personalized application demand can be met, and also there is high reliability and fast charging and discharging characteristic.
Technical problem of the present utility model is solved by following technical scheme:
A kind of pole piece, comprises collector, resin glue grid and active material; Described resin glue grid is hydrophobic resin glue grid, and arrange on a current collector, described active material is arranged in each cell space of described resin glue grid.
A kind of energy storage device, comprises the contraposition coarctate positive electrode of heat and negative material; Described positive electrode and negative material include pole piece and colloidal electrolyte, or the one in described positive electrode and negative material comprises pole piece and colloidal electrolyte, and another one is the collector that surface-coated has active material; Described pole piece is pole piece as above, and described colloidal electrolyte is arranged on the active material in each cell space of the resin glue grid of described pole piece.
The beneficial effect that the utility model is compared with the prior art is:
Pole piece of the present utility model, energy storage device, pole piece comprises collector and setting resin glue grid on a current collector, active material are arranged in each cell of grid.When forming energy storage device, colloidal electrolyte is filled into active material business in each cell space, and the pole piece of this pole piece and another same structure or the pole piece contraposition hot pressing of another ordinary construction can form energy storage device.In the energy storage device of said structure, namely form independently sub-energy-storage units in each cell space in resin glue grid, and without the need to shell, overall dimensions is less, and more frivolous.There is Scalability simultaneously, the energy storage device of arbitrary size, size can be cut into according to demand, the application demand that current electronic equipment is lightening, miniaturized, personalized can be met.And, due to structural overall improvement, eliminate the use of barrier film, thus greatly improve the ion mobility of device, effectively improve the charge-discharge velocity of device; The electrolyte of colloidal is arranged in the closed cells of resin glue grid protocol, effectively can prevent the problem of electrolyte leakage.In addition, resin glue skeleton grid has excellent mechanical performances, can effectively restricted activity material and electrolyte, thus when being subject to strong external force, still effectively can maintaining device architecture, preventing shorted devices, having good reliability.
[accompanying drawing explanation]
Fig. 1 is the structural representation of pole piece in preparation process of the utility model embodiment;
Fig. 2 is the step 2 of the utility model embodiment) vertical view of collector after process;
Fig. 3 is the step 3 of the utility model embodiment) vertical view of collector after process;
Schematic diagram when Fig. 4 a is two pole piece contraposition hot pressing formation energy storage devices of the utility model embodiment;
Fig. 4 b is a pole piece of the utility model embodiment and another common pole piece contraposition hot pressing schematic diagram when forming energy storage device;
Fig. 5 is the surface scan Electronic Speculum figure after the collector position activity material of the embodiment 3 of the utility model embodiment;
Fig. 6 is the cross-sectional scans Electronic Speculum figure after the collector position activity material of the embodiment 3 of the utility model embodiment;
Fig. 7 is the circuit diagram of the impact resistance of the test energy storage device of embodiment of the present utility model;
Fig. 8 is the residue specific capacity test result figure of the test energy storage device of embodiment of the present utility model.
[embodiment]
Contrast accompanying drawing below in conjunction with embodiment the utility model is described in further details.
As shown in Figure 1, be the pole piece preparation process schematic diagram of this embodiment, comprise the following steps:
1) prepare collector and hydrophobic resin glue, collector 1 is formed hydrophobic resin glue grid 3.
In this step, collector 1 can select Copper Foil, aluminium foil, titanium sheet, stainless (steel) wire, stainless steel substrates, nickel sheet, copper sheet, graphite flake, carbon nanotube paper, graphite paper or ito film, and thickness is 5-1000 μm.Resin glue grid 3 uses any hydrophobic resin glue grid, preferably, use polyurethane (PU) grid, polyvinyl acetate (EVA) grid or polyacrylate (PA) grid as hydrophobic resin glue grid herein, or the prepreg grid directly adopting prepreg to be etched into is as resin glue grid herein.Mode by 3 D-printing, orifice plate printing, impression forms hydrophobic resin glue grid 3 on collector 1.In addition, also directly prepreg icking tool can be etched into prepreg grid frame, then grid be pasted on a current collector, and strengthen the cohesive force between prepreg and collector by modes such as bakings.
2) prepare active material, active material is filled in each cell space of described resin glue grid.As shown in Figure 1, active material 5 is filled with in each cell of the resin glue grid 3 on collector 1.As shown in Figure 2, be the vertical view of the collector after this step process.
In this step, by electrochemical deposition, curtain coating, spraying or blade coating mode, active material 5 is filled in each cell space of resin glue grid 3.
Curtain coating, spraying or blade coating time, active material, binding agent and conductive agent are dissolved in solvent, be made into finely dispersed slurry, use casting machine, electrostatic spraying apparatus or blade coating device subsequently again by slurry uniform fold to collection liquid surface, transfer at 30 ~ 120 DEG C and set to 0 .5-12 hour, to discharge stress and evaporating solvent, thus form active material layer in the grid cell lattice of collector.
In the manner described above, cathode active material is filled in each cell space of the resin glue grid of collector, i.e. obtained positive plate; Negative electrode active material material is filled in each cell space of the resin glue grid of collector, i.e. obtained negative plate.
After obtained pole piece, obtain energy storage device according to steps of processing:
3) prepare colloidal electrolyte, colloidal electrolyte is filled on the described active material in each cell space of resin glue grid, obtained pole piece.As shown in Figure 1, the active material 5 in each cell of the resin glue grid 3 on collector 1 is filled with colloidal electrolyte 7.As shown in Figure 3, be the vertical view of the collector after this step process.
Electrolyte is made colloidal electrolyte, thus be convenient to be formed in grid.After preparing colloidal electrolyte, it is evenly coated on pole piece, is filled in cell, is positioned over air drying, can for the preparation of energy storage device after colloidal electrolyte solidification.
Process the positive plate or negative plate that obtain, energy storage device can be prepared into further, such as ultracapacitor or battery.When being prepared into energy storage device, as shown in fig. 4 a, the positive plate of this structure and negative plate are snapped to grid, namely contraposition hot pressing obtain energy storage device together.So-called hot pressing, refers in uniform temperature, such as, at the temperature of 50-120 DEG C, two pole pieces being filled with colloidal electrolyte is pressed together.Or as shown in Figure 4 b, by the pole piece of this structure of a slice and the common pole piece of another sheet, namely collector is coated with the common pole piece contraposition hot pressing of active material layer, also obtained energy storage device.Certainly, under Fig. 4 b mode, can also add colloidal electrolyte layer at common pole piece, namely on the active material layer of collector, coating forms step 3 in this embodiment of one deck again) in colloidal electrolyte, thus improve the reliability of energy storage device.
Energy storage device obtained in the manner described above, conductive current collector is constructed resin glue grid, thus as a kind of skeleton, support, namely follow-up active material and electrolyte being filled in skeleton grid obtain electrode slice, obtains energy storage device finally by contraposition hot pressing.Energy storage device has following effect:
First, size can be cut into arbitrary dimension, size according to application demand, shape (such as L-type, T-shaped etc.), obtained miniaturized, regular or erose energy storage device, thus meet lightening, the miniaturized and personalized application demand of current electronic equipment.
Second, structure eliminates barrier film, avoid short circuit by the contact of net grid support interval positive plate collector and negative plate collector, intercepted the contact of positive plate active material and negative plate active material by dielectric substrate, arranged by the position of net grid support and electrolyte layers and intercept both positive and negative polarity.Meanwhile, owing to eliminating barrier film, the migration resistance of ion is reduced, thus ion mobility faster can be obtained relative to the energy storage device of existing traditional structure, improve the charge-discharge velocity of device, improve chemical property., structure is improved meanwhile, use the electrolyte of colloidal, be filled in skeleton grid, greatly reduce the probability of electrolyte leakage.
3rd, each cell of resin glue grid protocol is equivalent to secret room one by one, can active material and electrolyte be limited in specific space effectively, even if thus be subject to strong External Force Acting, as sheared, under the external force impacts such as impact, also effectively device architecture can be maintained, stop the contact between both positive and negative polarity to cause short circuit, under ensureing external impacts, energy storage device still can normally work.In addition, through experiment test, obtained energy storage device chemical property when being subject to ambient pressure still keeps good, has good reliability.
The energy storage device of this embodiment has good chemical property, high reliability and can cut out characteristic.The equipment investment that preparation technology uses is few, and energy consumption is low, and method is fast and simple, is easy to carry out industrialization and produce on a large scale.
Preferably, the height of hydrophobic resin glue grid is 0.01 ~ 2mm, and each cell area is 0.03 ~ 1cm
2.When the height of grid and dense degree meet above-mentioned scope, can coating active material and electrolyte effectively, and enough intensive thus construct the resin glue support frame with better mechanical property, the reliability of final energy storage device improves further.As a kind of implementation, each cell of resin glue grid such as can be the square of rule, and the length of side of cell is 1 ~ 8mm, and limit thickness is 0.02 ~ 0.5mm, and limit height is 0.01 ~ 2mm.
As follows, embodiment and comparative example are set, further the performance of the energy storage device of this embodiment of checking.
Embodiment 1
Collector selects thickness to be about the titanium plate of 40 μm, is cut into the rectangle of 8cm × 10cm.Resin glue selects PUR.
The height of the grid that collector is arranged is 0.2mm, and cell area is 0.3cm
2.
Positive active material is deposited with on the collector of grid---MnO
2, as positive plate.Negative active material---active carbon is filled, as negative plate with blade coating on the collector of grid.
Get out the sodium sulphate electrolyte of colloidal, get that aforementioned two panels is of the same area deposits MnO respectively
2, the positive plate of active carbon, negative plate be positioned in plane, ready colloidal electrolyte is evenly coated in respectively the surface of each collector, after colloidal electrolyte solidification, positive plate, negative plate are carried out contraposition hot pressing, forms asymmetric ultracapacitor.
Embodiment 2
Collector selects thickness to be about the stainless steel substrates of 10 μm and the graphite paper of 50 μm, is cut into the rectangle of 10cm × 15cm.Stainless steel substrates put into acetone and alcohol by volume than for the mixed solution ultrasonic process 0.5-3 of 1:3 little time, be finally put into drying in 70-100 DEG C of baking oven, with for subsequent use.Resin glue selects polyurethane.
The height of the grid that collector is arranged is 0.08mm, and cell area is 0.5cm
2.
Positive active material is deposited with on the stainless steel substrates of grid---Ni (OH)
2, as positive plate.Graphite paper is as negative plate.It should be noted that, when graphite paper is as collector, it is without the need to applying active material, and the graphite content on graphite paper is active material.A kind of situation under the concept that graphite paper belongs to " surface-coated has the collector of active material ".
Get out the lithium sulfate electrolyte of colloidal, by the above-mentioned positive plate depositing active material, negative plate is cut into the electrode slice of equal area size (3cm × 3cm), ready colloidal electrolyte is evenly coated in its surface, after colloidal electrolyte solidification, positive plate, negative plate are carried out contraposition hot pressing, forms lithium ion battery.
Embodiment 3
Collector selects thickness to be about 30 μm, and area is the titanium plate of 10cm × 9cm.Resin glue selects PUR.
Collector selects surface to be formed with the collector of nickel pointed cone array structure, and the height of the grid that collector is arranged is 0.06mm, and cell area is 0.1cm
2.
With position activity material---redox graphene on the collector of grid, respectively as positive plate, negative plate.
As shown in Figure 5 and Figure 6, the surface of the collector after position activity material and the scanning electron microscope (SEM) photograph of side is respectively.As can be seen from surperficial Electronic Speculum figure, active material---redox graphene is three-dimensional porous network structure.Scanning electron microscope (SEM) photograph from the side observes the cross-sectional structure of collector, and obviously can observe nickel pointed cone array, redox graphene is deposited on nickel pointed cone collector, and has the feature of porous.
Prepare the lithium sulfate electrolyte of colloidal, preceding deposition there are the positive plate of Graphene, negative plate cutting equal area size (2cm × 3cm), ready colloidal electrolyte is evenly coated in its surface, after colloidal electrolyte solidification, positive plate, negative plate are carried out contraposition hot pressing, forms symmetric form ultracapacitor.
In the present embodiment, adopt surface to have the collector of nickel pointed cone array structure, thus nickel pointed cone array can effectively in conjunction with heat of adsorption melten gel grid, grid is solid and reliable, thus can further improve the reliability of energy storage device.
Embodiment 4
Collector selects thickness to be about the nickel foil of 30 μm, is cut into the rectangle of 6cm × 10cm.Resin glue grid adopts colloid to stick the form of hot-melt adhesive powder.
The height of the grid that collector is arranged is 0.3mm, and cell area is 0.4cm
2.
With position activity material---ruthenium-oxide on the collector of grid, respectively as positive plate, negative plate.
Prepare the electrolyte sulfuric acid of colloidal, getting aforementioned obtained two panels positive plate, the negative plate depositing active material of the same area is positioned in plane, the electrolyte sulfuric acid of colloidal is evenly coated in its surface, after the electrolyte sulfuric acid solidification of colloidal, positive plate, negative plate are carried out contraposition hot pressing, forms symmetric form ultracapacitor.
In the present embodiment, the mode adopting first brush resin to add hot-melt adhesive powder again forms grid, and grid is solid and reliable, thus can further improve the mechanical property of energy storage device, makes it to have higher reliability.
Embodiment 5
Collector selects thickness to be about the graphite flake of 1mm, and area is 40cm × 50cm.Resin glue selects prepreg.
The height of the grid that collector is arranged is 0.8mm, and cell area is 0.8cm
2.
On the collector of band grid, curtain coating fills negative electrode active material---by active carbon, as negative plate.Common collector deposits positive active material---Co
3o
4nanometer layer, as positive plate.
Prepare the Na of colloidal
2sO
4electrolyte, getting two panels positive plate, the negative plate depositing active material of the same area is positioned in plane, colloidal electrolyte is evenly coated in its surface, after colloidal electrolyte solidification, positive plate, negative plate are carried out contraposition hot pressing, forms asymmetric type supercapacitor.
In the present embodiment, be provided with grid frame due to an only pole piece being formed, therefore can reduce the integral thickness of energy storage device further.
Comparative example 1
Adopt mode similar to Example 1 two panels to be coated with the collector of active material and colloidal electrolyte is assembled into ultracapacitor, difference is only collector does not form resin glue grid.
Collector selects thickness to be about the titanium plate of 40 μm, is cut into the rectangle of 8cm × 10cm.
Deposit positive active material on a current collector---MnO
2, as positive plate.Deposit negative active material on a current collector---active carbon, as negative plate.
Get out the sodium sulphate electrolyte of colloidal, get that aforementioned obtained two panels is of the same area deposits MnO respectively
2, the positive plate of active carbon, negative plate be positioned in plane, colloidal electrolyte is evenly coated in its surface, after colloidal electrolyte solidification, positive plate, negative plate is carried out contraposition hot pressing, form asymmetric type supercapacitor.
Comparative example 2
Adopt the material identical with embodiment 1, after position activity material, obtained positive plate, negative plate, be then assembled into traditional ultracapacitor together with barrier film, electrolyte.
After the energy storage device of obtained above-mentioned 5 embodiments and 2 comparative examples, test as follows respectively:
Test one: reliability testing.During test, according to the circuit diagram shown in Fig. 7, access of being connected respectively by above-mentioned energy storage device is with in the simple circuit of switch and LED.When switch disconnects, use the DC power supply of 3V that energy storage device voltage is charged to 3V, after stablizing 1 minute, remove DC power supply.Then, closed by switch, now LED is started working.When LED works, with ceramic scissors cutting energy storage device.During cutting, 5 embodiments all carry out cutting along grid, and 2 comparative examples owing to there is not grid, then carry out cutting along the position identical with embodiment 1.When judging cutting, whether LED still can normally work.
Test result, when the energy storage device of 5 embodiments is cropped, LED still can normally work.And the energy storage device of 2 comparative examples cropped time, LED extinguish.The ability that the resistance to foreign impacts of the energy storage device of embodiment is described is comparatively strong, and the shock-resistant ability of comparative example 2 not forming the comparative example 1 of grid and traditional structure is poor.Analyze reason to be then: the capacitor in comparative example after the shearing both positive and negative polarity all touches together, causes short circuit.Ultracapacitor, the battery of embodiment then owing to have employed resin glue net grid support, coordinate integrally-built improvement, thus effectively intercept the contact of both positive and negative polarity, still regular picture can make LED work under impact force, have high reliability.
Test two: the residue specific capacity test under different pressures.Apply different pressure to energy storage device, test energy storage device is bearing residue specific capacity chart of percentage comparison corresponding under different pressures.In Fig. 8, seven curves are respectively the test result figure of the energy storage device of 5 embodiments and 2 comparative examples.Can obtain from Fig. 8, at various pressures, the energy storage device of 5 embodiments has good compressive resistance performance, still can normally work at a higher pressure, under the pressure of 90 kPas, its capacity retention is still more than 85%, and embodiment 3 reaches 92.6%, embodiment 4 reaches 93.15%, shows excellent compressive resistance performance.The energy storage device of 2 comparative examples is then along with the continuous increase of pressure, and capacity retention sharply reduces after there is first rising slightly, and finally direct short-circuit under 40 lower kpa pressures, compressive resistance performance is not good.The distance that capacity is possessed when the reason taking the lead in slightly rising is applying pressure between two pole pieces shortens, and causes capacity to raise.
It should be noted that, the performance of embodiment 3 and 4 is all better compared with other 3 embodiments, possible cause is: in embodiment 3, collector is the collector that surface has nickel pointed cone array structure, general nickel pointed cone array is formed by screw dislocation growth mechanism, therefore the nickel pointed cone array structure on surface makes collection liquid surface have certain roughness, be conducive to the resin glue network arranged on its surface compared with large ratio of height to width, the adhesion of collector and resin glue, collector and active material can be improved simultaneously, thus make the performance of embodiment 3 more excellent.The better performances of embodiment 4, be then that the mode adding hot-melt adhesive powder due to resin forms resin glue grid, grid is solid and reliable, and mechanical property is good, thus the best performance of energy storage device.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, make some substituting or obvious modification without departing from the concept of the premise utility, and performance or purposes identical, all should be considered as belonging to protection range of the present utility model.
Claims (9)
1. a pole piece, is characterized in that: comprise collector, resin glue grid and active material; Described resin glue grid is hydrophobic resin glue grid, and arrange on a current collector, described active material is arranged in each cell space of described resin glue grid.
2. an energy storage device, is characterized in that: comprise the contraposition coarctate positive electrode of heat and negative material; Described positive electrode and negative material include pole piece and colloidal electrolyte, or the one in described positive electrode and negative material comprises pole piece and colloidal electrolyte, and another one is the collector that surface-coated has active material; Described pole piece is pole piece according to claim 1, and described colloidal electrolyte is arranged on the active material in each cell space of the resin glue grid of described pole piece.
3. energy storage device according to claim 2, is characterized in that: described collector is the collector that surface has nickel pointed cone array structure.
4. energy storage device according to claim 2, is characterized in that: described collector is Copper Foil, aluminium foil, titanium sheet, stainless (steel) wire, stainless steel substrates, nickel sheet, copper sheet, graphite flake, carbon nanotube paper, graphite paper or ito film.
5. energy storage device according to claim 2, is characterized in that: the height of described resin glue grid is 0.01 ~ 2mm, and each cell area is 0.03 ~ 1cm
2.
6. energy storage device according to claim 5, is characterized in that: each cell of described resin glue grid is square, and the length of side of cell is 1 ~ 8mm, and limit thickness is 0.02 ~ 0.5mm, and limit height is 0.01 ~ 2mm.
7. energy storage device according to claim 2, is characterized in that: described resin glue grid is polyvinyl acetate grid, Polyurethane grid, polyacrylate grid or prepreg grid.
8. energy storage device according to claim 2, is characterized in that: described resin glue grid is formed on described collector by the mode of impression, 3 D-printing or orifice plate printing.
9. energy storage device according to claim 2, is characterized in that: described active material is filled in each cell space of described resin glue grid by electrochemical deposition, curtain coating, spraying or blade coating mode.
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| CN201520062098.3U CN204407412U (en) | 2015-01-28 | 2015-01-28 | A kind of pole piece, energy storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600243A (en) * | 2015-01-28 | 2015-05-06 | 清华大学深圳研究生院 | Pole piece, energy storage device and preparation method of pole piece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600243A (en) * | 2015-01-28 | 2015-05-06 | 清华大学深圳研究生院 | Pole piece, energy storage device and preparation method of pole piece |
| CN104600243B (en) * | 2015-01-28 | 2016-09-21 | 清华大学深圳研究生院 | A kind of pole piece, energy storage device and preparation method thereof |
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