CN207993964U - Vanadium cell combination electrode - Google Patents
Vanadium cell combination electrode Download PDFInfo
- Publication number
- CN207993964U CN207993964U CN201820322061.3U CN201820322061U CN207993964U CN 207993964 U CN207993964 U CN 207993964U CN 201820322061 U CN201820322061 U CN 201820322061U CN 207993964 U CN207993964 U CN 207993964U
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- Prior art keywords
- graphite felt
- carbon cloth
- plastic sheet
- combination electrode
- plastic
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model discloses a kind of vanadium cell combination electrodes, the vanadium cell combination electrode is made of compound graphite felt, carbon cloth and plastic sheet, carbon cloth is placed among two panels plastic sheet, then plastic sheet and carbon cloth are between two panels graphite felt, by the long axis of graphite felt and wide axis by mechanical processing, the combination electrode of respectively less than plastic sheet and carbon cloth is made.The combination electrode of the utility model is using carbon cloth as conducting base, and, carbon cloth can enhance the mechanical strength and toughness of plastic central conductive plate, Plastic conductive plate is set not have the generation of conductive chain phenomenon of rupture, Plastic conductive plate satisfactory mechanical property, machining is easy, and combination electrode is flexible at circle, will not be deformed after recovery.The combination electrode being prepared into using the utility model method can improve pressure, the service life of energy efficiency and battery in the electric discharge of full vanadium oxidation liquid flow energy storage battery, it will not cause graphite felt, the structural failure of carbon cloth, plastic sheet will not generate bubble and by graphite felt fibres and be aoxidized.
Description
Technical field
The utility model belongs to oxidation deoxidization liquid energy-storing battery technical field, and in particular to a kind of oxidation, reduction liquid storage
The combination electrode of energy battery.
Background technology
With the increasingly exhausted and corresponding environmental problem of traditional energy, the profit of the regenerative resources such as wind energy, solar energy
With causing people widely to pay close attention to and be rapidly developed, while to ensure the stable power-supplying of regenerative resource, overcoming it intrinsic
Problem, more and more electric power storage energy storage technologies are developed and are used, wherein flow battery as extensive energy storage technology one
Kind solution.
Oxidation deoxidization liquid energy-storing battery compares with other chemical energy storage batteries with lot of advantages, specifically has：Battery
Service life is high, power and capacity can be freely combined on demand and independently of each other, deep discharge will not damage battery.Oxidation is also
Former liquid flow energy storage battery is a kind of novel electronation energy-storage battery, using different Jie's state metal ions in electrolyte as electricity
Pond anode and negative electrode active material, anode and the electrolyte of cathode separately store, by electric pump by anode electrolyte and negative electricity
After solution liquid pump enters the interior completion redox reaction of battery graphite felt, it flow back into storage container.From oxidation, reduction liquid energy-storage electricity
From the point of view of the operation principle in pond, oxidation deoxidization liquid energy-storing battery has the advantage of extensive efficiently electric power storage.
From the point of view of the operation principle of oxidation deoxidization liquid energy-storing battery, bipolar plates and graphite felt are oxidation, reduction liquid storages
Can the particularly important critical material of battery, the effect of bipolar plates is positive and negative anodes electrolyte to be completely cut off while conducting electric current, graphite felt
Or carbon felt is that have preferable electro-chemical activity and invertibity, the use of vanadium cell in vanadium redox energy-storage battery
Service life has certain relationship, vanadium cell to be made of multiple components with its bipolar plates and graphite felt, and the replacement of various components is then right
Answer the service life of its corresponding portion.Due to electrolyte be strong acid and strong oxidizing solution, bipolar plates and graphite felt will have
Fabulous electric conductivity and corrosion resistance, bipolar plates should existing graphite cake electric conductivity, also have the soft flexible of plastics；And
And it is very corrosion-resistant, any electrochemical corrosion will not be generated with electrolyte in charge and discharge process, not will produce any liquid leakage,
The problem of leakage.The bipolar plates of vanadium redox battery mainly have at present：Graphite bi-polar plate, conductive plastic bi-polar plate
With integrated composite electrode bipolar plates.
The connection type of graphite bi-polar plate and graphite felt is the mode by being pressed together, even if can be bonded as one also very
It can be easily separated out, graphite bi-polar plate and graphite felt will form contact slot and generate resistance under the same pressure of electric pump, electricity
After the charge and discharge cycles of Chi Jing after a period of time, there is the phenomenon that is corroded in graphite cake anode, and gathers on graphite cake surface smear
Aniline can prevent graphite cake to be corroded, but because polyaniline and graphite cake cannot fuse for an entirety, by one section
After the charge and discharge cycles of time, polyaniline coating can be separated with graphite plate surface, be peeled off, graphite bi-polar plate and graphite felt it
Between resistance it is increasing, graphite cake, which will appear machinery, disintegrates and causes battery failure；In addition, graphite cake processing it is extremely complex be difficult
Big size is done, and processing efficiency very low price is again extremely expensive.
The connection type of conductive plastic bi-polar plate and graphite felt is the mode by being pressed together, even if can be bonded as one
Also it is easily separated out, the main conductive filler of conductive plastic bi-polar plate is conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite, is led
After electric acetylene carbon black, conductive carbon fibres peacekeeping graphite are added in thermoplastic polymer, conductive acetylene carbon black, conductive carbon fibres peacekeeping
Each conductive one's share of expenses for a joint undertaking between graphite is to be bonded together by thermoplastic polymer, and thermoplastic polymer is nonconducting object
Matter, therefore, battery is after charge and discharge cycles after a period of time, meeting between conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite
There is phenomenon of rupture, resistance is increasing between graphite bi-polar plate and graphite felt, and conductive plastic bi-polar plate will appear bubbling, electric
Corrosion phenomenon, and cause battery failure.
Combination electrode for all vanadium redox flow battery that Chinese patent application CN200810303483.7 is disclosed and
Preparation method, predominantly three kinds of conductive fillers (conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite) are added to thermoplasticity polymerization
Thermoplastic conductive plate is prepared in object, thermoplastic conductive plate is combined with graphite felt hot pressing again, and the part in graphite felt is led
Electric carbon fiber is embedded in conductive plate surface, the conductive network of interpenetrating is formed, to improve the electric conductivity of product entirety.It is above-mentioned to be somebody's turn to do
Combination electrode for all vanadium redox flow battery major defect is：
(1) it is equal to be added to twin-screw extruder mixing in thermoplastic polymer for conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite
After even, each conductive one's share of expenses for a joint undertaking between conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite is bonded by thermoplastic polymer
Together, many conductive one's share of expenses for a joint undertaking contact points can be formed, and thermoplastic polymer is nonconducting substance, the pole in charge and discharge process
It will appear phenomenon of rupture between the conductive acetylene carbon black that be easy to cause in plasticity bipolar plates, conductive carbon fibres peacekeeping graphite, and cause
Battery failure.
(2) because the thermoplastic polymer content in thermoplastic conductive plate is less, that is, binding is less, thermoplasticity
Conductive plate and the combined electrode structure that graphite felt hot pressing is combined are also insecure unstable, and battery is through charge and discharge after a period of time
After electricity cycle, phenomenon of rupture is will appear between conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite, conductive plastic bi-polar plate can go out
Now by galvano-cautery phenomenon, resistance is increasing between conductive plastic bi-polar plate and graphite felt, conductive plastic bi-polar plate will appear by
Galvano-cautery and cause battery failure.
(3) preparation of its combination electrode：Graphite felt is placed in thermoplastic conductive plate one or both sides, it will with vulcanizing press
Graphite felt 160~200 DEG C to graphite felt apply pressure, suppress 10~15 minutes, by thermoplastic conductive plate heat after with graphite
Felt is pressed into one, and pressurize is cooled to room temperature obtained combination electrode.Plastic sheet just will produce during fusing into graphite felt bubble and
Have by graphite felt fibres and the appearance aoxidized, plastic sheet generate bubble and by graphite felt fibres to be aoxidized after, just
Positive and negative anodes electrolyte cannot be obstructed, the battery assembled with made combination electrode can not just carry out charge and discharge, and battery will lose
Effect.
In addition, Chinese patent application CN201110459942.2 also discloses integrated composite electrode bipolar plates and its preparation
Method and application, predominantly integrated graphite felt/carbon felt and plastic sheet composition, plastic sheet are embedded in two panels graphite felt/carbon felt
Between, the long axis of plastic sheet and wide axis are all higher than the long axis of graphite felt/carbon felt and wide axis.The graphite felt of the combination electrode is very crisp
Raw material, with thermoplastic sheet or thermosetting property plate is placed among two panels graphite felt, then heating keeps thermoplastic sheet or thermosetting property plate molten
In graphite felt, the method for combination electrode plate, major defect are prepared by using graphite felt as conducting base：
(1) graphite felt is all dissolved in intermediate thermoplastic sheet or thermosetting property plate, the plasticity of intermediate thermoplastic's plate script
Can, it can seriously be reduced by the fragility of graphite felt after dissolving in graphite felt, intermediate thermoplastic's plate can become very fragile, and pole holds
It easily causes thermoplastic sheet and is carbonized and decompose, for battery during installation or use, using graphite felt as conducting base prepared by is compound
Electrode plate very crisp can be easy to crack, and cause battery failure；
(2) being seriously broken all has occurred in the excessive fiber for just extremely be easy to causeing graphite felt of pressure that graphite felt is born
Phenomenon, graphite felt carries out charge-discharge performance again will be very poor, and thermoplastic sheet is easy to by graphite felt fibres, be known as climbing in industry
Glue phenomenon, intermediate thermoplastic sheet has generated many through-holes at this time, and thermoplastic sheet can be become after graphite felt fibres
It is very fragile, it cannot can play the role of the positive and negative electrolyte of barrier at all, will fail after battery assembling.
Utility model content
For above deficiency, in order to avoid the contact resistance between graphite felt and bipolar plates, and non-metal kind is overcome
Electrode occurs being broken and generating resistance increased defect during battery use, and the primary and foremost purpose of the utility model is to provide
A kind of combination electrode.
The another object of the utility model is to provide the preparation method of above-mentioned combination electrode.
A further object of the utility model is to provide the purposes of above-mentioned combination electrode.
The purpose of this utility model is achieved through the following technical solutions：
A kind of combination electrode, including plastic sheet, carbon cloth and graphite felt, the plastic sheet are equipped with two panels, the carbon cloth sandwiched
Between two panels plastic sheet, the graphite felt is equipped with two panels, and the plastic sheet and carbon cloth clamp between two panels graphite felt, leads to
Crossing heating makes plastic sheet be dissolved in carbon cloth and graphite felt respectively, and then plastic sheet, carbon cloth and graphite felt is made to form entirety.
To further realize the utility model, the length and width of the carbon cloth is consistent with the length and width of plastic sheet.
To further realize the utility model, the length and width of the two panels graphite felt be respectively less than plastic sheet length and
Width.
To further realize the utility model, the thickness of plastic sheet described in the preparation method of the combination electrode is graphite
0.2-0.35 times of felt thickness.
To further realize the utility model, carbon cloth thickness described in the preparation method of the combination electrode is that plastic sheet is thick
1-1.2 times of degree.
The utility model has the following advantages compared with the existing technology and effect：
1, the vanadium cell combination electrode of the utility model can obviously reduce existing graphite felt and bipolar plates by being pressed into contact with
Resistance caused by mode.
2, the vanadium cell combination electrode of the utility model be using carbon cloth as conducting base, moreover, carbon cloth can enhance it is compound
Mechanical strength and toughness make the Plastic conductive plate of combination electrode not have the generation of conductive chain phenomenon of rupture, combination electrode mechanicalness
Can be good, machining is easy, and combination electrode is flexible at circle, will not be deformed after recovery, and air-tightness is good, in single side plus
Gas leak phenomenon will not be generated under the air pressure of 3 kilograms of pressure.
3, the vanadium cell combination electrode being prepared into using the utility model method does not easily cause graphite felt, the structure of carbon cloth damage
Bad, plastic material will not generate bubble and by graphite felt fibres and be aoxidized, and can improve full vanadium oxidation liquid energy-storage
The current efficiency of battery, the service life of voltage efficiency, energy efficiency, electrolyte utilization rate and battery reduce impedance.
4, the vanadium cell combination electrode mature preparation process of the utility model, electric conductivity is excellent, and production is easy, not variable
Shape, product qualified rate have practical and application prospect well up to 100%.
Description of the drawings
Fig. 1 is the structural schematic diagram of the vanadium cell combination electrode of the utility model；
Fig. 2 is the combination electrode vertical view that the vanadium cell combination electrode of the utility model prepares.
Reference sign：1- plastic sheets；2- carbon cloths；3- graphite felts；4- mold A plates；5- mold B plates.
Specific implementation mode
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
Embodiment 1
A kind of vanadium cell combination electrode, including plastic sheet 1, carbon cloth 2 and graphite felt 3, wherein plastic sheet 1 is equipped with two panels, carbon
Cloth 2 is folded between two panels plastic sheet 1, and the length and width of carbon cloth 2 is consistent with the length and width of plastic sheet 1, and graphite felt 3 is set
There are two panels, the length and width of two panels graphite felt 3 to be respectively less than the length and width of plastic sheet 1, two panels plastic sheet 1 and carbon cloth 2 are equal
It clamps between two panels graphite felt 3, so that plastic sheet 1 is dissolved in respectively in carbon cloth 2 and graphite felt 3 by heating, and then make plastic sheet
1, carbon cloth 2 and graphite felt 3 form entirety.
Since carbon cloth 2 is fiber cloth-like, the structure of the ventilative through hole with fiber cloth, therefore, plastic sheet 1 can be straight after heating
It connects and is flowed into its through-hole, make plastic material that can combine closely and be uniformly distributed with carbon cloth 2；In addition, the surface of graphite felt 3 is simultaneously
It is rough, and there is gap, surface irregularity, the plastic sheet 1 after melting can be flowed into the concave surface of graphite felt 3 simultaneously,
And be flowed into its gap, it combines closely with entire graphite felt 3, therefore, the plastic sheet 1 melted at this time has the function of glue,
Carbon cloth 2 and graphite felt 3 are connected into an entirety.Since carbon cloth 2 and graphite felt 3 all have electric conductivity, heating melting is simultaneously
Combination electrode after cooling is conductive, remains with the electric conductivity as electrode, and since its conductive materials integrated structure is special
Property, the electric conductivity of combination electrode can be effectively improved.
In addition, the vanadium cell combination electrode of the utility model remains the mechanical performance of plastics used in its manufacture and adds
Work performance, intensity, toughness and bending strength with plastics.Carbon cloth 2 can reinforced plastics piece between being located at two panels plastic sheet 1 simultaneously
The 1 whole mechanical strength and toughness combined with carbon cloth 2, makes the Plastic conductive plate of combination electrode not have conductive chain phenomenon of rupture
Occurring, the satisfactory mechanical property of combination electrode, machining is easy, and combination electrode is flexible at circle, will not be deformed after recovery,
Air-tightness is good, and gas leak phenomenon will not be generated in the case where single side pressurizes 3 kilograms of air pressure.
The combination electrode is prepared by following methods：
(1) by PE or PP plastic pellets, by being pressed to form plastic sheet 1, (thickness of plastic sheet 1 is graphite felt thickness
0.2-0.35 times)；
(2) on the inside of mold A, B plate for being individually placed to the graphite felt 3 of two panels 6.5mm thickness, by carbon cloth 2, (carbon cloth thickness is modeling
1-1.2 times of material thickness) it is placed among two panels PE plastic sheets 1, then plastic sheet 1 and carbon cloth 2 is embedding is placed on two panels graphite felt 3
Between, then close and close tight mold；
(3) mould inside is vacuumized, prevents plastic sheet from generating bubble and by graphite felt fibres and being aoxidized；
(4) by graphite felt 3, carbon cloth 2 and the plastic sheet 1 in mold and mold at 201-270 DEG C after constant temperature 1-60 minutes,
Plastic sheet 1 all dissolves in carbon cloth 2 and graphite felt 3.
(5) by the length and width of graphite felt 3 by mechanical processing after cooling, respectively less than plastic sheet 1 and carbon cloth 2 is made
Combination electrode.
The structure of obtained vanadium cell combination electrode as shown in Figure 1, graphite felt 3, carbon cloth 2 and plastic sheet 1 it is molten at
One, plastic sheet 1 and carbon cloth 2 are among two panels graphite felt 2.
Embodiment 2
The structure of its combination electrode is identical as the structure of embodiment 1, and difference lies in the thickness of graphite felt differences, are 7mm,
The combination electrode is prepared by following methods：
(1) by PE or PP plastic pellets, by being pressed to form plastic sheet 1, (thickness of plastic sheet 1 is graphite felt thickness
0.2-0.35 times)；
(2) on the inside of mold A, B plate for being individually placed to the graphite felt 3 of two panels 7mm thickness, by carbon cloth 2, (carbon cloth thickness is plastics
1-1.2 times of piece thickness) be placed among two panels PE plastic sheets 1, then plastic sheet 1 and carbon cloth 2 it is embedding be placed on two panels graphite felt 3 it
Between, then close and close tight mold；
(3) mould inside is vacuumized, prevents plastic sheet from generating bubble and by graphite felt fibres and being aoxidized；
(4) by graphite felt 3, carbon cloth 2 and the plastic sheet 1 in mold and mold at 201-270 DEG C after constant temperature 1-60 minutes,
Plastic sheet 1 all dissolves in carbon cloth and graphite felt.
(5) by the length and width of graphite felt 3 by mechanical processing after cooling, respectively less than plastic sheet 1 and carbon cloth 2 is made
Combination electrode.
The structure of obtained vanadium cell combination electrode as shown in Figure 1, graphite felt 3, carbon cloth 2 and plastic sheet 1 it is molten at
One, plastic sheet 1 and carbon cloth 2 are among two panels graphite felt 2.
The battery that the vanadium cell combination electrode made from embodiment 1 assembles, charge-discharge performance are as shown in table 1；With conduction
The battery of plastic bipolar plate assembling, charge-discharge performance are as shown in table 2；The battery assembled with integrated composite electrode bipolar plates,
Its charge-discharge performance is as shown in table 3.
Charge-discharge performance of the battery of 1 combination electrode of table assembling at current density 50mA/cm2
Charge-discharge performance of the battery of 2 conductive plastic bi-polar plate of table assembling at current density 50mA/cm2
Charge-discharge performance of the battery of 3 integrated composite electrode bipolar plates of table assembling at current density 50mA/cm2
In above-mentioned table 1, table 2 and table 3, the calculation formula of charge and discharge electrical impedance R is：
(being pressed in pressure-electric discharge in charging)/(current density × 2) R=
As can be seen from Table 1 and Table 2, the battery assembled using the combination electrode of the utility model compares conductive plastic bi-polar plate
Current efficiency, voltage efficiency, energy efficiency, the electrolyte utilization rate of the battery of assembling are all significantly improved, and impedance has obviously
It reduces, is more importantly：The battery assembled with combination electrode, can very stably use, battery obtains greatly
The commercial value of the raising of amplitude, battery is obviously improved；And the battery of conductive plastic bi-polar plate assembling, through after a period of time
After charge and discharge cycles, battery performance significantly reduces, and is illustrated by contrast test, and the performance of the various aspects of combination electrode is all apparent
Better than conductive plastic bi-polar plate.
From table 1 and table 3 as can be seen that the battery assembled using the combination electrode of the utility model compares integrated composite electrode
Current efficiency, voltage efficiency, energy efficiency, the electrolyte utilization rate of the battery of bipolar plates assembling are all significantly improved, impedance
Also it decreases, can be obtained by correction data, the electric conductivity of the combination electrode of the utility model is better than integrated compound electric
The performance of pole bipolar plates.
Since the phase will appear carbonization and climbs glue phenomenon integrated composite electrode bipolar plates after use, corresponding its uses the longevity
Life is also affected, and service life is expected to be 10-15, the combination electrode of the utility model be using carbon cloth as conducting base,
It is expected that service life is 20 years or so.
The vanadium cell combination electrode being prepared into using the utility model method can improve full vanadium oxidation liquid flow energy storage battery
The service life of current efficiency, voltage efficiency, energy efficiency, electrolyte utilization rate and battery reduces impedance, does not easily cause stone
The structural failure of black felt, carbon cloth, plastic material will not generate bubble and by graphite felt fibres and be aoxidized.
The foregoing is merely the better embodiment of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, there may be the changes of partial structurtes in implementation process, if various changes or modifications to the utility model do not depart from
The spirit and scope of the utility model, and belong within the scope of the claims and equivalents of the utility model, then this practicality
It is novel to be also intended to include these modification and variations.
Claims (5)
1. a kind of vanadium cell combination electrode, it is characterised in that：Including plastic sheet, carbon cloth and graphite felt, the plastic sheet is equipped with two
Piece, the carbon cloth are folded between two panels plastic sheet, and the graphite felt is equipped with two panels, and the plastic sheet and carbon cloth are clamped two
Between piece graphite felt, plastic sheet is set to be dissolved in carbon cloth and graphite felt respectively by heating, and then make plastic sheet, carbon cloth and graphite felt
It is formed whole.
2. a kind of vanadium cell combination electrode according to claim 1, it is characterised in that：The length and width of the carbon cloth with
The length and width of plastic sheet is consistent.
3. a kind of vanadium cell combination electrode according to claim 2, it is characterised in that：The length of the two panels graphite felt and
Width is respectively less than the length and width of plastic sheet.
4. a kind of vanadium cell combination electrode according to claim 1 or 2, it is characterised in that：The thickness of the plastic sheet is
0.2-0.35 times of graphite felt thickness.
5. a kind of vanadium cell combination electrode according to claim 4, it is characterised in that：The carbon cloth thickness is that plastic sheet is thick
1-1.2 times of degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820322061.3U CN207993964U (en) | 2018-03-08 | 2018-03-08 | Vanadium cell combination electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820322061.3U CN207993964U (en) | 2018-03-08 | 2018-03-08 | Vanadium cell combination electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207993964U true CN207993964U (en) | 2018-10-19 |
Family
ID=63826600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820322061.3U Expired - Fee Related CN207993964U (en) | 2018-03-08 | 2018-03-08 | Vanadium cell combination electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207993964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565473A (en) * | 2018-03-08 | 2018-09-21 | 广州市泓能五金有限公司 | Vanadium cell combination electrode and the preparation method and application thereof |
| CN115447215A (en) * | 2022-07-26 | 2022-12-09 | 北京国电锐新科技有限公司 | Preparation method of conductive sheet, conductive sheet and novel flow battery bipolar plate |
-
2018
- 2018-03-08 CN CN201820322061.3U patent/CN207993964U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565473A (en) * | 2018-03-08 | 2018-09-21 | 广州市泓能五金有限公司 | Vanadium cell combination electrode and the preparation method and application thereof |
| CN115447215A (en) * | 2022-07-26 | 2022-12-09 | 北京国电锐新科技有限公司 | Preparation method of conductive sheet, conductive sheet and novel flow battery bipolar plate |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20200308 |
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