CN1845370A - Flow battery making electrolyte cross porous electrode - Google Patents
Flow battery making electrolyte cross porous electrode Download PDFInfo
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- CN1845370A CN1845370A CNA2006100114703A CN200610011470A CN1845370A CN 1845370 A CN1845370 A CN 1845370A CN A2006100114703 A CNA2006100114703 A CN A2006100114703A CN 200610011470 A CN200610011470 A CN 200610011470A CN 1845370 A CN1845370 A CN 1845370A
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Abstract
The related stack structure for fluid cell comprises: arranging spaced comb grooves crossed the thickness orientation of guide plate to allow electrolyte cross directly the porous electrode on substrate for full contact of the active material in electrolyte and the cubic electrode. This invention can improve speed of electrochemical redox reaction, increases current density, and simplifies cell structure with low cost.
Description
Technical field
The present invention relates to electric energy and transform and technical field of memory, especially make the technical method of flow battery.
Background technology
Utilizing renewable energy power generations such as wind energy, solar energy is one of human following important channel that obtains energy from nature.Because wind energy, solar energy produce marked change along with changing its energy output round the clock, the electric energy that is difficult to keep stable is exported, and the apparatus for storing electrical energy of needs and certain scale matches, and constitutes complete electric power system, guarantees continual and steady supply of electrical energy.Therefore, exploitation electric energy conversion efficiency height, storage volume energy-storage system big, that economic performance is good become the key of development renewable and clean energy resource.In various forms of energy storage devices, for example retaining energy-accumulating power station, high speed flywheel mechanical energy storage, cold and hot temperature difference energy storage etc., characteristics such as electrochemical energy storage has the energy conversion efficiency height, and mobility is strong cause that the various countries researcher greatly pays close attention to.Multi-form fuel cell technology is ripe gradually; Non-maintaining type lead acid storage battery pool technology is that automobile industry development lays the foundation.Yet because the former mainly acts as a fuel with hydrogen or methyl alcohol, device and process complexity involve great expense, and are difficult to be accepted by economic society; The latter uses a large amount of lead as battery material, has the hidden danger of large tracts of land environmental pollution, is difficult to apply as extensive energy storage technology at wind energy, solar power system, seeks the inevitable choice that new solution becomes the regenerative resource development process.The flow battery system has electrical power storage and efficient transformation function, and the characteristics of long service life, environmental protection, safety are easy to be complementary with wind energy, solar power generation, reduce equipment manufacturing cost significantly, for renewable energy utilization provides technique guarantee.Be used for the network system energy storage, can avoid the hydroenergy storage station construction period long, the shortcoming of addressing geographical conditions harshness, the uninterrupted power supply that is suitable for medium-scale industrial enterprise, hotel, government department uses, can effectively improve grid supply quality, finish " peak load shifting " effect of electrical network.
All-vanadium flow battery (Vanadium Redox Battery, VRB) be a kind of mechanism of new electrochemical power sources, vanadium ion by different valence state transforms storage and the release that realizes electric energy mutually, use element of the same race to form battery system, avoided variety classes active material between positive and negative half-cell to interpenetrate the cross pollution of generation from principle.Use is dissolved in that the different valence state vanadium ion is as anode and negative electrode active material in the electrolyte, and anodal electrolyte and negative pole electrolyte separate storage are avoided battery storage process self-discharge phenomenon from principle, is suitable for extensive thermal energy storage process and uses.When the power of wind energy, device of solar generating surpasses rated output power,, electric energy is converted into chemical energy is stored in the ion of different valence state by charging to flow battery; When Blast Furnace Top Gas Recovery Turbine Unit (TRT) can not satisfy rated output power, flow battery began discharge, and the chemical energy that stores is converted into electric energy, guaranteed the output of stable electrical power.Because flow battery has special significance for renewable energy power generation processes such as wind energy, solar energy, (US Pat 6,764,789 to obtain common concern at home and abroad as key technology; US Pat App 20040170893; Chinese patent publication number: 1567618A; 1598063A).
In order to develop extensive redox flow battery energy storage system, the electric pile structure around flow battery has carried out big quantity research.By collector plate design in the battery pile, change electrolyte flow and distribute, reduce fluid resistance losses (US Pat App20030087156).In the existing all-vanadium flow battery, the electric conducting material that uses the porousness stereochemical structure usually is as electrode, as porous metals, carbon felt, graphite felt etc., so that obtain higher current density.When the electrolyte concurrent flow is crossed the porous electrode surface, utilize the water conservancy diversion groove that electrolyte is evenly distributed, avoid " bias current " phenomenon to take place, (US Pat 6,475,661 to improve battery performance; US Pat App 20030087156).Because the active material in the electrolyte is slower in the porous electrode diffusion inside, only be near the electrode material of superficial layer redox electrochemical reaction interface is provided, the electrode material that is in deep layer is difficult to play a role, and reduces the practical effect of porous stereo electrod.In order to address this problem, the present invention proposes the type of flow that electrolyte directly passes porous electrode, replace original electrolyte concurrent flow to cross the mode of electrode surface, active material in the electrolyte is fully contacted with stereo electrod, increase the electrochemical reaction interfacial area, promote electrochemical redox reaction, improve the flow battery current density.Utilize novel flow battery structure of the present invention, can realize the flow process of electrolyte cross porous electrode, take into account the even distribution of electrolyte on electrode simultaneously, obviously improve electric energy and chemical transformation of energy and efficiency of storage in the all-vanadium flow battery.
Summary of the invention
The object of the invention is to provide a kind of new structure of flow battery, accelerates electrochemical reaction rates, improves electric energy and chemical transformation of energy and efficiency of storage.
The invention is characterized in:
Described battery is composed in series by a plurality of monocells, each monocell is composed in series by an anodal half-cell and a negative pole half-cell, and each anodal half-cell or negative pole half-cell all are arranged in order after position alignment from top to bottom by the following parts made from elastomeric material and constitute; Amberplex 1, film side turbulent flow plate 2, film side baffler 3, collector plate 4, electrode liner plate 5, water conservancy diversion feedboard 6 and feed spacer 7 have an electrode frame in the centre of described electrode liner plate 5, and porous electrode 8 is housed in this frame; When being composed in series monocell, accompany shared amberplex 1 in the middle of both by described anodal half-cell and negative pole half-cell; Between the anodal half-cell and negative pole half-cell between each monocell, in each monocell, all compacted and sealing in intimate contact between each component parts described in each anodal half-cell or the negative pole half-cell, till electrolyte does not leak, with this understanding for each anodal half-cell or negative pole half-cell, wherein:
Feed spacer 7, the top of left and right side has anolyte ostium and catholyte ostium successively along its length, but the flow direction of described two kinds of electrolyte in this two hole is opposite;
Water conservancy diversion feedboard 6, Zuo Ce top anolyte inflow place that faces described feed spacer 7 along its length has comb shape groove spaced apart, this comb shape groove connects the thickness direction of described water conservancy diversion feedboard 6, under the condition that water conservancy diversion feedboard 6 and electrode liner plate 5 compress mutually, anolyte is evenly distributed in the described comb shape groove and the middle section of this water conservancy diversion feedboard 6 of inflow with being directed to; Have comb shape groove spaced apart in the bottom of this water conservancy diversion feedboard 6, this comb shape groove connects the thickness direction of described water conservancy diversion feedboard 6, anolyte arrives the surface of the porous electrode 8 of electrode liner plate 5 central authorities that are positioned at these water conservancy diversion feedboard 6 belows after flowing through the comb shape groove of perforation, is not convex and do not connect part;
Electrode liner plate 5, in the middle electrode frame porous electrode 8 is housed, anolyte passes these porous electrode 8 back arrival and is positioned on the screen cloth that is positioned at collector plate 4 central authorities of these electrode liner plate 5 belows, have the catholyte ostium in the upper right side along these electrode liner plate 5 length directions, the flow direction of this catholyte is opposite with the anolyte flow direction;
Collector plate 4, the screen cloth that the useful electric conducting material of middle body is made, anolyte passes this screen cloth and flows downward; Be provided with the projection made from electric conducting material that links to each other with this screen cloth along length direction one side of this collector plate 4 being connected lead, and have the catholyte ostium above the right side, the flow direction of this catholyte is opposite with the anolyte flow direction;
Film side baffler 3, the anolyte porch that faces described film side turbulent flow plate 2 along below, the left side of these film side baffler 3 length directions has comb shape groove spaced apart, this comb shape groove connects the thickness direction of this film side baffler 3, after anolyte passes the screen cloth of described collector plate 4, enter and be positioned at this film side baffler 3 central authorities comb shape groove spaced apart, and this comb shape groove connects the thickness direction of this film side baffler 3; Under the condition that this film side baffler 3 and described film side turbulent flow plate 2, amberplex 1 compress mutually, anolyte is through being positioned at the comb shape groove of film side baffler 3 middle bodies, be directed to the comb shape groove of below, left side and pass the anolyte porch that this film side baffler 3 flows into film side turbulent flow plate 2, do not connect part and be convex;
Film side turbulent flow plate 2 having the catholyte ostium above the left side of these film side turbulent flow plate 2 length directions, and the flow direction of catholyte is opposite with the anolyte flow direction; At these film side turbulent flow plate 2 middle positions a screen cloth is arranged;
Its flow direction was in the same way when described anolyte, catholyte flow through described anodic half-cell.
Form on member at each of described anodal half-cell or negative pole half-cell, be uniform-distribution with many screw holes of using when locking in the marginal portion of described each plate as external force.
Screen cloth on the described collector plate 4 closely contacts with porous electrode 8 on the described electrode liner plate 5, and electric current is derived from described porous electrode 8, spreads out of collector plate 4 through behind described screen cloth and the peripheral electric conducting material that this screen cloth links to each other.
Described anolyte and catholyte flow through the same parts in the negative or positive electrode half-cell, and the frame that is positioned at described electrolyte periphery on these parts is isolated from each other.
On described water conservancy diversion feedboard 6, the comb shape groove that the anolyte inflow entrance place that the close described simultaneously top in left side along its length faces described feed spacer 7 has, and described that part of comb shape groove that is positioned at this water conservancy diversion feedboard bottom is to connect described water conservancy diversion feedboard 6.
On described water conservancy diversion feedboard 6, the comb shape groove that the anolyte inflow entrance place that the close described simultaneously top in left side along its length faces described feed spacer 7 has, and described that part of comb shape groove that is positioned at this water conservancy diversion feedboard bottom is not connect described water conservancy diversion feedboard 6.
After the compacted and tight contact seal of described anodal half-cell, the described film side turbulent flow plate 2 that compresses mutually, film side baffler 3, collector plate 4 constitutes an anode chamber, and anolyte flows through the comb shape groove place that is pooled to the below, horizontal direction left side of described film side baffler 3 behind the comb shape groove on described film side baffler 3 tops;
The flat board of the comb shape groove of the electrolyte stream hand-hole on the described feed spacer 7, top, the left side of the horizontal direction on the water conservancy diversion feedboard 6 and electrode liner plate 5 correspondence positions of below, the closely contact of alignment back, the three constitutes the dark hole of water conservancy diversion that anolyte flows into jointly, and anolyte enters the middle section of described water conservancy diversion feedboard 6 by the dark hole of this water conservancy diversion;
The electrolyte stream hand-hole of the comb shape groove of the below, horizontal direction left side on the described film side baffler 3, the film side turbulent flow plate 2 of these film side baffler 3 belows, and the flat board of collector plate 4 correspondence positions, the closely contact of alignment back, the three constitutes the dark hole of water conservancy diversion that anolyte flows out jointly, and anolyte passes through the dark hole of this water conservancy diversion from described film side baffler 3 central outflows;
Catholyte is from the bottom up successively by amberplex 1, film side turbulent flow plate 2, film side baffler 3, collector plate 4, electrode liner plate 5, water conservancy diversion feedboard 6 and feed spacer 7, each parts was compacted after catholyte ostium on described each parts of anodal half-cell was in alignment with each other, catholyte flows through described each parts after amberplex 1 enters, enter next negative pole half-cell after passing feed spacer 7;
For the negative pole half-cell, structurally identical with described anodal half-cell, and also the type of flow of catholyte in the negative pole half-cell is identical with the type of flow of anolyte in above-mentioned anodal half-cell;
Described amberplex 1, film side turbulent flow plate 2, film side baffler 3, collector plate 4, electrode liner plate 5, water conservancy diversion feedboard 6 and feed spacer 7 can be made separately assembling of back respectively, are assembled into pile again after also can being bonded as one or several member.
The present invention proposes the type of flow that electrolyte directly passes porous electrode, and the active material in the electrolyte is fully contacted with stereo electrod, increases the electrochemical reaction interfacial area, promotes electrochemical redox reaction speed, improves the flow battery current density.Propose novel flow battery structure on this basis, realize that electrolyte directly passes the flow process of porous electrode, take into account the even distribution of electrolyte on electrode simultaneously, significantly improve electric energy and chemical transformation of energy and efficiency of storage in the all-vanadium flow battery.Owing to adopt the electric current of the collector plate conduction porous electrode that has conductive mesh, saved the bipolar plates of flow battery in the past, simplify battery structure and reduce cost, for further industrial production lays the foundation.
Description of drawings
Single-cell structure in Fig. 1 flow battery:
The 1-amberplex, 2-film side turbulent flow plate, 3-film side baffler, the 4-collector plate,
5-electrode liner plate, 6-water conservancy diversion feedboard, the 7-feed spacer, the 8-porous electrode:
Among Fig. 1+,-symbol is represented anolyte and catholyte respectively, and the solid line and the dotted line that have arrow are represented anolyte and catholyte flow direction respectively;
Fig. 2 anodic half-cell structure:
The 1-amberplex, 2-film side turbulent flow plate, 3-film side baffler, the 4-collector plate,
5-electrode liner plate, 6-water conservancy diversion feedboard, the 7-feed spacer, the 8-porous electrode:
Among Fig. 2+,-symbol is represented anolyte and catholyte respectively;
Fig. 3 film side turbulent flow plate structure;
Fig. 4 water conservancy diversion feedboard structure;
Fig. 5 film side deflector structure;
Fig. 6 collector plate structure;
Fig. 7 feed spacer structure;
Fig. 8 electrode lining plate structure;
The electric current of Fig. 9 charging process flow battery and voltage is change curve in time;
The electric current of Figure 10 discharge process flow battery and voltage is change curve in time:
Symbol mouth representative voltage, zero represents electric current.
Embodiment
It is following that details are as follows flow battery structure of the present invention:
This all-vanadium flow battery is composed in series by some groups of monocells, and each monocell is made up of anodal half-cell and negative pole half-cell.Wherein the negative or positive electrode half-cell is by constituting with lower member: amberplex, film side turbulent flow plate, film side baffler, collector plate, electrode liner plate, electrode, water conservancy diversion feedboard and feed spacer.
Figure 2 shows that anolyte flows through anodal half-cell process.Anolyte flow through successively feed spacer, water conservancy diversion feedboard the water conservancy diversion undercut, enter and be evenly distributed to porous electrode surface different piece behind the water conservancy diversion feedboard, pass the porous electrode of electrode liner plate central authorities and the screen cloth of collector plate central authorities, enter film side baffler; The bossing that do not connect of film side baffler makes anolyte evenly distribute on film side turbulent flow plate surface, and film side turbulent flow plate promotes that electrolyte fully contacts with amberplex simultaneously, through flowing to the exit of film side baffler behind the baffling, flows out by the water conservancy diversion undercut; Successively by entering the negative pole half-cell behind film side turbulent flow plate, the amberplex.Anolyte passes film side turbulent flow plate, film side baffler, collector plate, electrode liner plate, charging baffler, feed spacer successively in the negative pole half-cell, enter next anodal half-cell.
Catholyte passes amberplex, film side turbulent flow plate, film side baffler, collector plate, electrode liner plate, charging baffler, feed spacer successively from the negative pole half-cell, after this enters next negative pole half-cell.
The type of flow of catholyte in the negative pole half-cell is similar to the flow process of anolyte in anodal half-cell.
Realize being isolated from each other by the frame of an end when anolyte and catholyte flow through same battery component in anodic half-cell, avoid electrolyte to mix the back self-discharge phenomenon takes place; Use frame to finish to be isolated from each other equally when flowing through the same battery component in the negative pole half-cell.
Described film side turbulent flow plate two ends process the passage that electrolysis liquid flows through, and play the effect of electrolyte distributing slot simultaneously; Mid portion is connected with the screen cloth that same material is made, and guiding electrolyte evenly distributes on the amberplex surface and promotes the electrolyte turbulent flow to form.
The dark hole formation of described water conservancy diversion method is rectangular slot and the zone of the comb shape groove on the film side baffler 3 consistency from top to bottom on the film side turbulent flow plate 2, and the collector plate 4 of top is a flat board at this position, and the three constitutes the water conservancy diversion undercut of anolyte flow export jointly.The comb shape groove on the water conservancy diversion feedboard wherein, the projection width is 2～5 millimeters, the sunk part width is 2～5 millimeters.
Comb shape groove zone on the water conservancy diversion feedboard 6 and the ostium consistency from top to bottom on the feed spacer 7, the electrode liner plate 5 of below is a flat board at this position, the three constitutes the water conservancy diversion undercut of anolyte inflow entrance jointly.
Described amberplex directly contacts with film side turbulent flow plate, and film side turbulent flow plate diaphragm surface is injury-free, promotes the electrolyte turbulence simultaneously.Film side turbulent flow plate, film side baffler, electrode liner plate, water conservancy diversion feedboard, feed spacer all adopt engineering plastic materials of the same race, for example, polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, ABS etc., have suitable support stiffness and pliability, guarantee closely contact seal to each other.Film side turbulent flow plate, film side baffler, electrode liner plate, water conservancy diversion feedboard, feed spacer can be made respectively, also can the as a whole parts of combination with one another.
Described electrode is installed in the electrode liner plate, by the water conservancy diversion feedboard with closely contact each other after conductive mesh on the collector plate compresses.
Described collector plate adopts the electric conducting material of acid resistance, anti-electrochemical oxidation to make, for example, and electrically conductive graphite, conductive engineering plastics, 316 stainless steels etc.
Described all parts compress sealing by clamping device, stop electrolyte leakage, realize that anolyte and catholyte are isolated each other.
Described structure is formed the half-cell of oxidation, reduction liquid pile, and a monocell is formed in anodal half-cell and negative pole half-cell series connection back, and some monocells are composed in series the pile of redox flow batteries successively.
According to shown in Figure 1, use the present invention to set up all-vanadium flow battery, realize that electric energy transforms and stores.Use V respectively
4+/ V
5+And V
3+/ V
2+Vanadium ion is as anode, the cathode active material of redox flow batteries, and the anodal half-cell in the battery, the electrochemical reaction of negative pole half-cell are as follows.
Anodal reaction
E
0＝1.00V
Negative reaction
E
0＝-0.26V
All-vanadium flow monocell end plate sectional area is 145 * 145mm, and anolyte is the 0.9mol/L V of 1000ml
4++ 2mol/LH
2SO
4The aqueous solution, catholyte are 0.9mol/LV
3++ 2mol/LH
2SO
4The aqueous solution discharges and recharges experiment under the circulate electrolyte flow velocity of 40L/h, at room temperature measure this redox flow batteries pile performance.
Adopt the constant voltage charging modes, keeping the charging voltage of pile is about 1.6V.Along with charging process is carried out, 4 valency vanadium ions in the anodal electrolyte lose electronics and change 5 valency vanadium ions into, 3 valency vanadium ions in the negative pole electrolyte obtain electronics and change the divalent vanadium ion into, and the electromotive force of battery increases gradually, cause charging current to increase gradually in time and reduce (Fig. 9).
Adopt the constant resistance discharge mode, configuration 0.62 Ω on the circuit, the constant load of 10W.Along with discharge process carries out, 5 valency vanadium ions in the anodal electrolyte obtain electronics and are reduced to 4 valency vanadium ions, divalent vanadium ion in the negative pole electrolyte loses electronics and is oxidized to 3 valency vanadium ions, the terminal voltage of battery begins to descend gradually from 1.0V, and discharging current increases gradually in time and reduces (Figure 10).
Table 1 has compared under the different circulation rates of electrolyte, and electrolyte directly passes the type of flow of porous electrode, and the battery performance of electrolyte under porous electrode one side PARALLEL FLOW situation.Because when electrolyte cross porous electrode flows, active material in the electrolyte can fully contact with porous electrode inside, increase the electrochemical reaction interfacial area, promote electrochemical redox reaction, under the different electrolytes circulation rate, for close charging voltage, mean charging current is improved significantly, and the energy efficiency of calculating all-vanadium flow battery based on this improves about 20%.
The table 1 different electrolytes type of flow is to the battery charging and discharging performance impact
| Flow velocity 40L/h | Flow velocity 80L/h | Flow velocity | 120L/h | Flow velocity | 160L/h | |||
| Advection | Percolation | Advection | Percolation | Advection | Percolation | Advection | Percolation | |
| Charging voltage | 1.66V | 1.61V | 1.69V | 1.64V | 1.64V | 1.69V | 1.62V | 1.65V |
| Charging current | 0.16A | 0.39A | 0.18A | 0.40A | 0.24A | 0.28A | 0.23A | 0.37A |
| Discharge voltage | 0.81V | 0.89V | 0.87V | 0.96V | 0.99V | 0.99V | 0.94V | 0.93V |
| Discharging current | 0.85A | 0.93A | 0.90A | 0.94A | 0.98A | 1.03A | 0.96A | 0.93A |
Pass through the foregoing description, prove the type of flow of electrolyte cross porous electrode proposed by the invention, the active material in the electrolyte is fully contacted with stereo electrod, increase the electrochemical reaction interfacial area, increase electrochemical redox reaction speed, improve the flow battery charge-discharge performance.The electric current that employing has the collector plate conduction porous electrode of conductive mesh has saved the bipolar plates of flow battery in the past, simplifies battery structure and reduces cost, and large-scale electric energy transforms and the chemical power source technology of storage lays the foundation for development is used for.
Claims (7)
1. flow battery that makes electrolyte cross porous electrode, it is characterized in that, described battery is composed in series by a plurality of monocells, each monocell is composed in series by an anodal half-cell and a negative pole half-cell, and each anodal half-cell or negative pole half-cell all are arranged in order after position alignment from top to bottom by the following parts made from elastomeric material and constitute; Amberplex (1), film side turbulent flow plate (2), film side baffler (3), collector plate (4), electrode liner plate (5), water conservancy diversion feedboard (6) and feed spacer (7), in the centre of described electrode liner plate (5) electrode frame is arranged, porous electrode (8) is housed in this frame; When being composed in series monocell, accompany shared amberplex (1) in the middle of both by described anodal half-cell and negative pole half-cell; Between the anodal half-cell and negative pole half-cell between each monocell, in each monocell, all compacted and sealing in intimate contact between each component parts described in each anodal half-cell or the negative pole half-cell, till electrolyte does not leak, with this understanding for each anodal half-cell or negative pole half-cell, wherein:
Feed spacer (7), the top of left and right side has anolyte ostium and catholyte ostium successively along its length, but the flow direction of described two kinds of electrolyte in this two hole is opposite;
Water conservancy diversion feedboard (6), Zuo Ce top anolyte inflow place that faces described feed spacer (7) along its length has comb shape groove spaced apart, this comb shape groove connects the thickness direction of described water conservancy diversion feedboard (6), under the condition that water conservancy diversion feedboard (6) and electrode liner plate (5) compress mutually, anolyte is evenly distributed in the described comb shape groove and the middle section of this water conservancy diversion feedboard (6) of inflow with being directed to; Have comb shape groove spaced apart in the bottom of this water conservancy diversion feedboard (6), this comb shape groove connects the thickness direction of described water conservancy diversion feedboard (6), anolyte flows through the surface that arrives the porous electrode (8) of electrode liner plate (5) central authorities that are positioned at this water conservancy diversion feedboard (6) below behind the comb shape groove of perforation, is not convex and do not connect part;
Electrode liner plate (5), in the middle electrode frame porous electrode (8) is housed, anolyte passes this porous electrode (8) back and arrives on the screen cloth that is positioned at collector plate (4) central authorities that is positioned at this electrode liner plate (5) below, have the catholyte ostium in the upper right side along this electrode liner plate (5) length direction, the flow direction of this catholyte is opposite with the anolyte flow direction;
Collector plate (4), the screen cloth that the useful electric conducting material of middle body is made, anolyte passes this screen cloth and flows downward; Be provided with the projection made from electric conducting material that links to each other with this screen cloth to be connected lead along length direction one side of this collector plate (4), and above the right side, having the catholyte ostium, the flow direction of this catholyte is opposite with the anolyte flow direction;
Film side baffler (3), the anolyte porch that faces described film side turbulent flow plate (2) along below, the left side of this film side baffler (3) length direction has comb shape groove spaced apart, this comb shape groove connects the thickness direction of this film side baffler (3), after anolyte passes the screen cloth of described collector plate (4), enter and be positioned at this film side baffler (3) central authorities comb shape groove spaced apart, and this comb shape groove connects the thickness direction of this film side baffler (3); Under the condition that this film side baffler (3) and described film side turbulent flow plate (2), amberplex (1) compress mutually, anolyte is through being positioned at the comb shape groove of film side baffler (3) middle body, be directed to the comb shape groove of below, left side and pass the anolyte porch that this film side baffler (3) flows into film side turbulent flow plate (2), do not connect part and be convex;
Film side turbulent flow plate (2) have the catholyte ostium in the top, left side along this film side turbulent flow plate (2) length direction, and the flow direction of catholyte is opposite with the anolyte flow direction; At this film side turbulent flow plate (2) middle position a screen cloth is arranged;
Amberplex (1), there is an anolyte ostium below, along its length left side, and anolyte flows into the anolyte tap hole of below, left side in the described anolyte ostium of amberplex (1) along its length and passes amberplex (1) from described film side turbulent flow plate (2) and arrives the negative pole half-cell; Above this amberplex left side along its length, have the catholyte ostium.
2. a kind of flow battery that makes electrolyte cross porous electrode according to claim 1 is characterized in that: its flow direction was in the same way when described anolyte, catholyte flow through described anodic half-cell.
3. a kind of flow battery that makes electrolyte cross porous electrode according to claim 1, it is characterized in that: form on member at each of described anodal half-cell or negative pole half-cell, be uniform-distribution with many screw holes of using when locking in the marginal portion of described each plate as external force.
4. a kind of flow battery that makes electrolyte cross porous electrode according to claim 1, it is characterized in that: the screen cloth on the described collector plate (4) closely contacts with porous electrode (8) on the described electrode liner plate (5), electric current is derived from described porous electrode (8), spread out of collector plate (4) through behind described screen cloth and the peripheral electric conducting material that this screen cloth links to each other.
5. a kind of flow battery that makes electrolyte cross porous electrode according to claim 1, it is characterized in that: described anolyte and catholyte flow through the same parts in the negative or positive electrode half-cell, and the frame that is positioned at described electrolyte periphery on these parts is isolated from each other.
6. a kind of flow battery that makes electrolyte cross porous electrode according to claim 1, it is characterized in that: on described water conservancy diversion feedboard (6), the comb shape groove that the anolyte inflow entrance place that the close described simultaneously top in left side along its length faces described feed spacer (7) has, and described that part of comb shape groove that is positioned at this water conservancy diversion feedboard bottom is to connect described water conservancy diversion feedboard (6).
7. a kind of flow battery that makes electrolyte cross porous electrode according to claim 1, it is characterized in that: on described water conservancy diversion feedboard (6), the comb shape groove that the anolyte inflow entrance place that the close described simultaneously top in left side along its length faces described feed spacer (7) has, and described that part of comb shape groove that is positioned at this water conservancy diversion feedboard bottom is not connect described water conservancy diversion feedboard (6).
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252200B (en) * | 2008-03-12 | 2010-06-02 | 中南大学 | Liquid stream battery stack |
| CN101847724A (en) * | 2010-03-31 | 2010-09-29 | 清华大学 | Bipolar plate frame and galvanic pile of flow battery |
| CN102569843A (en) * | 2012-01-13 | 2012-07-11 | 清华大学 | Embedded electrode frame of flow cell pile |
| CN102723501A (en) * | 2012-06-29 | 2012-10-10 | 中国东方电气集团有限公司 | Porous electrode, liquid flow battery with same, battery stack and battery system |
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| CN109075356A (en) * | 2016-04-07 | 2018-12-21 | 洛克希德马丁能源有限责任公司 | Electrochemical cell with designed flow field and the method for producing the electrochemical cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07211346A (en) * | 1994-01-14 | 1995-08-11 | Sumitomo Electric Ind Ltd | Manufacture of electrolyte for vanadium redox flow type battery and manufacture of vanadium redox flow type battery |
| NZ306364A (en) * | 1995-05-03 | 1999-04-29 | Unisearch Ltd | High energy density vanadium electrolyte solutions, preparation thereof and redox cells and batteries containing the electrolyte solution |
| DK1143546T3 (en) * | 1999-09-27 | 2010-01-11 | Sumitomo Electric Industries | Redox flow battery |
| US6905797B2 (en) * | 2001-04-12 | 2005-06-14 | Squirrel Holdings Ltd. | Porous mat electrodes for electrochemical reactor having electrolyte solution distribution channels |
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| CN101252200B (en) * | 2008-03-12 | 2010-06-02 | 中南大学 | Liquid stream battery stack |
| CN101847724A (en) * | 2010-03-31 | 2010-09-29 | 清华大学 | Bipolar plate frame and galvanic pile of flow battery |
| CN101847724B (en) * | 2010-03-31 | 2013-01-30 | 清华大学 | Bipolar plate frame and galvanic pile of flow battery |
| CN102569843B (en) * | 2012-01-13 | 2014-10-29 | 清华大学 | Embedded electrode frame of flow cell pile |
| CN102569843A (en) * | 2012-01-13 | 2012-07-11 | 清华大学 | Embedded electrode frame of flow cell pile |
| CN102723501B (en) * | 2012-06-29 | 2015-02-18 | 中国东方电气集团有限公司 | Porous electrode, liquid flow battery with same, battery stack and battery system |
| CN102723501A (en) * | 2012-06-29 | 2012-10-10 | 中国东方电气集团有限公司 | Porous electrode, liquid flow battery with same, battery stack and battery system |
| CN104620432A (en) * | 2012-09-03 | 2015-05-13 | 蒂森克虏伯工业解决方案股份公司 | Flow-type electrochemical cell |
| US9680172B2 (en) | 2012-09-03 | 2017-06-13 | Thyssenkrupp Industrial Solutions Ag | Flow-type electrochemical cell |
| CN104620432B (en) * | 2012-09-03 | 2019-06-04 | 蒂森克虏伯工业解决方案股份公司 | Streaming electrochemical cell |
| CN109075356A (en) * | 2016-04-07 | 2018-12-21 | 洛克希德马丁能源有限责任公司 | Electrochemical cell with designed flow field and the method for producing the electrochemical cell |
| CN109075356B (en) * | 2016-04-07 | 2021-06-22 | 洛克希德马丁能源有限责任公司 | Electrochemical cell having a designed flow field and method for producing the same |
| CN109716570A (en) * | 2016-08-05 | 2019-05-03 | 昭和电工株式会社 | Redox flow batteries |
| CN110453236A (en) * | 2019-08-06 | 2019-11-15 | 全球能源互联网研究院有限公司 | A kind of mass transfer enhancement type CO2Electroreduction electrolytic cell |
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