CN108193225A - A kind of membrane electrode configuration CO2Electroreduction electrolytic cell - Google Patents
A kind of membrane electrode configuration CO2Electroreduction electrolytic cell Download PDFInfo
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- CN108193225A CN108193225A CN201810016816.1A CN201810016816A CN108193225A CN 108193225 A CN108193225 A CN 108193225A CN 201810016816 A CN201810016816 A CN 201810016816A CN 108193225 A CN108193225 A CN 108193225A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
Abstract
The invention discloses one kind carbon dioxide electrolytic cell is restored for electro-catalysis.Include the diaphragm of both cathode assembly, anode assemblies and segmentation.In anode assemblies, anode end plate, anode fluid distribution plate, anode flow field board, is sequentially connected with anode electrode plate anode current collector plate；In cathode assembly, electrolyte-supported layer, solution electrode plate, cathode gas diffusion electrode, cathode flow field plate, cathode fluid distribution plate, cathode collector plate and cathode end plate are sequentially connected.The electrolytic cell can reduce CO by changing the thickness of solution electrode plate2The usage amount of electroreduction electrolyte；Meanwhile electrolytic cell has the feed inlet and discharge port that electrolysis mass flow is employed, more new explanation matter that can be continuously or intermittently, and electrolyte concentration is adjustable, promotes the stability of carbon dioxide electroreduction long-play.Present invention design membrane electrode configuration electrolytic cell have that operating pressure is controllable, reaction temperature is controllable and can scale realize CO2The advantages such as conversion have wide application prospect.
Description
Technical field
The invention belongs to carbon dioxide electrochemical technology fields, are related to a kind of membrane electrode configuration CO2Electroreduction electrolytic cell.
Background technology
Currently, world energy consumption structure is still generally dependent on the fossils such as oil, natural gas, coal and timber money
Source, with the development of global economy, energy demand it is growing, fossil fuel it is excessive using being inevitably us
The environment depended on for existence brings some hazardous compounds, mainly including nitrogen oxides, oxysulfide, radioactive compound, a huge sum of money
Category, volatile organic compounds and carbon dioxide etc..The carbon dioxide largely discharged is cause greenhouse effects at present main
Factor.For this purpose, around carbon dioxide excess emissions problem, CO2The relevant technologies of capture, absorption and conversion become and currently ground
The hot spot studied carefully.Wherein, CO2Electro-catalysis transformation technology due to system structure is simple, environmental-friendly, reaction condition is mild
Etc. advantages and receive significant attention.
CO2Generation CO, CH can be reduced under electric field action4、C2H4Wait the production of the liquid phases such as gas-phase products and formic acid, ethyl alcohol
Object.Currently, patented technology focuses primarily upon the design of elctro-catalyst.Patent CN 104846393A once disclosed a kind of containing Ag's
Working electrode surface realizes CO2The method of electrochemical reduction, the specific steps are：It is mixed first by ionic liquid and ultra-pure water
Liquid prepares electrolyte, and as working electrode and CO is carried out using metal Ag electrodes2Electrochemical reduction, the faradic efficiency of product CO can
To reach 90%.CN 104959135A provide the technology of preparing of a kind of nanometer of zinc catalyst and based on the catalyst
Realize CO2The method that electroreduction prepares CO.It comprises the concrete steps that：A nanometer zinc catalyst is constructed by electro-deposition techniques, in constant potential
Lower reduction CO2, controlling potential ranging from -1.4~-1.8V, the current efficiency of reduzate CO is up to 93%.
Compared to the concern to cathode side catalyst, around CO2The design of electroreduction Novel electrolytic tank then rare report.
In general, laboratory uses reactor of the H-type electrolytic cell as electroreduction carbon dioxide, including anode chamber, cathode chamber and incite somebody to action
The separated proton exchange membrane of the two, proton exchange membrane reactant and product between anode chamber and cathode chamber for reducing product
Diffusion.Such as Chinese patent CN 204097577A disclose a kind of electrochemically reducing carbon dioxide reaction electrolytic cell.The electricity
Xie Chi includes anode chamber, cathode chamber and gas-liquid separator, and anode chamber can be divided into two cavitys up and down, and lower chamber is upper end opening
Container, upper cavity is placed in the top of lower chamber, is equipped with first flange disk with the openend of two cavitys, two cavitys lead to
Cross the connection of first flange disk；Working electrode is located between the first flange disk at upper and lower two cavity hatch ends.It is but above-mentioned this
There are the shortcomings such as tank voltage is high, liquid product effective concentration is low in application process for electrolytic cell.
Around CO2The design of electroreduction electrolytic cell, based on propositions such as solid oxide fuel cell (SOFC), Jensen
The designing scheme of electrolytic tank of solid oxide (SOEC) under a kind of high-temperature operation condition (500-1000 DEG C).In high-temperature operation item
Under part, which can effectively reduce CO2Electroreduction is CO or H2Electric energy (S.H.Jensen, Int.J.Hydrogen
Energy,32,3253(2007)).But by SOEC during long-play there are carbon distribution and by volatile matter institute
The electrode brought poisons, constrain its further development (T.-J.Huang, Electro chem.Commun, 11,1464
(2009)).Further, the electrolytic cell of membrane electrode configuration of people's concern based on Proton Exchange Membrane Fuel Cells (PEMFC) is set
Meter, it is intended to which CO is realized in scale2Low temperature conversion.The research work of early stage be byIt is deposited on film
Copper, using Proton Exchange Membrane Fuel Cells (PEMFCs) structure by CO2Be converted into fuel (R.L.Cook,
J.Electrochem. Soc,137,187(1990).).And recent study work is in cathode catalyst layer and proton exchange
PH buffer layers (KHCO is introduced between film3Aqueous solution), it realizes CO at room temperature2It is converted into CO and H2(C.Delacourt,
J.Electrochem.Soc.,155,B42(2008)).But above-mentioned membrane electrode configuration electrolytic cell all suffers from long-play
The disadvantage of process stability difference, limits CO2The industrialization process of electro-catalysis reduction.
CO is used for above-mentioned2In the structured design process of electroreduction electrolytic cell, membrane electrode configuration electrolytic cell, which has, is easy to mould
Block and can scale realize CO2The advantage of electro-catalysis conversion, application potential are huge.However, it is reported currently without related patents
The CONSTRUCTED SPECIFICATION of membrane electrode configuration electrolytic cell.
Invention content
In order to overcome problems of the prior art, the present invention proposes a kind of membrane electrode configuration CO2Reduction electrolysis
Pond.The electrolytic cell is not only with operating pressure is controllable, reaction temperature is controllable, electrolyte is flowable, can scale realization CO2Turn
The advantages such as change, and with the reversible attenuation for eliminating electrode stable operation process, maintain CO2The work(of electro-catalysis Reductive stability
Can, it is with high application prospect.
The technical scheme is that：
A kind of electrolytic cell of electro-catalysis reduction carbon dioxide, including both cathode assembly, anode assemblies and segmentation every
Film；The anode assemblies is are bonded connected anode end plate, anode current collector plate, anode fluid distribution plate, anode flow field board successively
With anode electrode plate；The cathode assembly is to be bonded connected electrolyte-supported layer, solution electrode plate, cathode gas successively to expand
Dissipate electrode, cathode flow field plate, cathode fluid distribution plate, cathode collector plate and cathode end plate；Diaphragm is set to anode assemblies
Between anode electrode plate and the electrolyte-supported layer of cathode assembly；Anode end plate is filled with cathode end plate by connecting hole and bolt
With fixation, and then realize the fixation of cathode and anode component；It is and embedding in the groove of electrolyte-supported layer insertion solution electrode plate
Enter the place that the cathode gas diffusion electrode in cathode flow field plate forms carbon dioxide electrochemical reaction；The solution electrode plate
Thickness is 2mm~5mm；The electrolyte-supported layer is one kind in asbestos film, silica wool or wool felt.
Further, above-mentioned cathode charging and discharging hole is respectively arranged at cathode end plate, cathode fluid distribution plate, solution electrode
In the diagonal positions of plate and cathode flow field plate；Electrolyte charging and discharging hole is shifted to install with cathode charging and discharging hole, is set respectively
In in cathode end plate, cathode fluid distribution plate, solution electrode plate, the diagonal positions with cathode flow field plate；Anode charging and discharging
Hole is respectively arranged in the diagonal positions of anode end plate, anode fluid distribution plate and anode flow field board；When each component assembling exists
When together, the charging and discharging hole on adjacent component corresponds to each other, with formed cathode and anode charging and discharging channel and electrolyte into,
Go out channel.
Electrolyte mass transfer channel is sequentially communicated the cathode end plate, cathode fluid distribution plate, cathode flow field plate to described
Electrolyte-supported layer, and the electrolyte cavity with the solution electrode plate connects respectively, is cathode CO2Electrocatalytic reduction electricity
It solves matter and transfer passage is provided；Cathode mass-transfer channel is sequentially communicated the cathode end plate, cathode fluid distribution plate, cathode flow field plate
To the cathode gas diffusion electrode, to supply cathode reactant (CO2Gas) and collect product；Anode mass transfer channel, successively
The anode end plate, anode fluid distribution plate, anode flow field board to the anode electrode plate are connected, to supply anode reactant
And collect product.
The mass transfer channel is made of the feeding-passage to communicate with each other and the tapping channel.
Further, location hole is set respectively on the cathode flow field plate, solution electrode plate and anode flow field board, when three
When person is assembled together, location hole corresponds to each other, to realize the fixation between adjacent component by locating shaft；Thermometer hole is set to
It on the peripheral wall of cathode and anode flow-field plate and extends to inside it, is inside placed with thermocouple, to monitor in the middle part of cathode and anode flow-field plate
Temperature in the reactive tank of setting.
Further, above-mentioned diaphragm is amberplex.
Compared with prior art, the present invention has the advantages that：It is adjustable by changing the thickness of solution electrode plate
Become CO2Ion resistance between the usage amount and cathode and anode of electroreduction electrolyte；Meanwhile electrolytic cell has electricity for liquid
Solution mass flow moves used feed inlet and discharge port, update electrolyte that can be continuously or intermittently, can promote carbon dioxide electricity also
The stability of former long-play.
Description of the drawings
Fig. 1 is the assembling structure schematic diagram of the electrolytic cell of electroreduction carbon dioxide in the embodiment of the present invention；
Fig. 2 is the positive structure schematic of cathode flow field plate in the embodiment of the present invention；
Fig. 3 is the reverse structure schematic of cathode flow field plate in the embodiment of the present invention
Fig. 4 (a) is the positive structure schematic of solution electrode plate in the embodiment of the present invention；(b) into bridge structural representation
Figure；
Fig. 5 is the reverse structure schematic of solution electrode plate in the embodiment of the present invention；
Fig. 6 is that the membrane electrode configuration electrolytic cell in the embodiment of the present invention is used for CO2Electro-catalysis restores target reduzate
CO、H2Faradic efficiency with current density variation tendency：(a)CO；(b)H2。
Fig. 7 is that the membrane electrode configuration electrolytic cell in the embodiment of the present invention is used for CO2Electro-catalysis restores：Solution electrode plate thickness
Degree is to CO2The influence (sweep speed 10mV/s) of electroreduction polarization curve
Fig. 8 is that the membrane electrode configuration electrolytic cell in the embodiment of the present invention is used for CO2Electro-catalysis restores：Saleratus concentration
To CO2The influence (sweep speed 10mV/s) of electroreduction polarization curve；
Fig. 9 is that the membrane electrode configuration electrolytic cell in the embodiment of the present invention is used for CO2Electro-catalysis restores target reduzate
CO、H2Faradic efficiency with saleratus concentration variation tendency；(a)CO；(b)H2。
In figure：1 anode end plate；2 anode current collector plates；3 anode fluid distribution plates；4 anode flow field boards；5 anode electrode plates；
6Nafion films；7 electrolyte-supported layers；8 solution electrode plates；9 cathode gas diffusion electrodes；10 cathode flow field plates；11 cathode streams
Body distribution plate；12 cathode collector plates；13 cathode end plates；14 feed inlet bolts；15 discharge port bolts；2-0 cathode flow field plates first
Electrode surface；2-1 seal washers；2-2 feed inlets；2-3 discharge ports；2-4 discharge ports；2-5 grooves；The second electricity of 3-0 cathode flow field plates
Pole-face；3-1 thermometer holes；3-2 flow fields；3-3 cathode reaction slots；4-0 solution electrodes the first insulating surfaces of plate；4-1 electrolyte cavities；4-2
Charging and discharging groove；4-3 is into bridge；5-0 solution electrodes the second insulating surfaces of plate.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described reality
It is part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without making creative work belong to what the present invention protected
Range.
Embodiment 1：The design and assemble method of membrane electrode configuration electrolyser construction
A kind of electrolytic cell of electroreduction carbon dioxide is present embodiments provided, as shown in Figure 1, including cathode assembly, anode
The diaphragm of component and segmentation the two, which is specially amberplex, more specifically perfluorosulfonic acid proton exchange film (quotient
The name of an article：Film)；Cathode assembly is included with the cathode gas diffusion electrode 9 of relative position, electrolyte-supported layer 7, molten
Liquid electrode plate 8, cathode flow field plate 10, cathode fluid distribution plate 11, cathode collector plate 12 and cathode end plate 13；Anode assemblies
Including having the anode electrode plate 5 being oppositely arranged, anode fluid distribution plate 3, anode flow field board 4, anode current collector plate 2 and sun
Extreme plate 1, wherein, the material of fluid flow field plates is conductive metal, for example, copper, stainless steel, titanium plate, graphite cake；Or have and lead
The supporter of electric metal coating, coated metal such as platinum, gold.The material of fluid distributing board is conductive material, such as copper, no
Become rusty steel or graphite cake.The material of end plate is conductive metal, for fixing and supporting for cell system；Collector plate is in end plate
Between fluid distributing board, for electric current evenly distributing in electrolysis stack system；Fluid distributing board is placed in collector plate and flow field
Between plate, for distribution of the cathode and anode logistics in stack system；Anode flow field board 4 and cathode flow field plate 10 can be cavity knot
Structure is alternatively the flow field structure with flow-guiding channel, and reactant, electrolyte and production are provided for solid electrolyte membrane electrode therebetween
Object flow-guiding channel；Be provided on end plate 13 with feed inlet 2-2 and the one-to-one threaded holes of discharge port 2-3, for installing pipe
Plate connector, to supply cathode reactant and collect reduction gas-phase product；
Cathode flow field plate 10, as shown in Figure 2,3, wherein, serpentine flow 3-3 is set to cathode flow field plate second electrode face
On 3-0.Cathode flow field plate first electrode face 2-0 surfaces are provided with several groove 2-5, one end of the groove and the cathode
Reactive tank connects, and opposite end connects with the mass transfer channel, with realize reactant from the mass transfer channel inflow flow field with
And product is flowed into from the flow field in the mass transfer channel.
Solution electrode plate 8, as shown in Figure 4,5, be provided with it is through it, there is the first openend for being oppositely arranged
With the electrolyte cavity 4-1 of the second openend, the first openend is connected with the sealing of cathode flow field plate 10.Wherein described electrolyte
Electrolyte cavity 4-1 is fitted close in supporting layer 7, with the solution electrode plate 8, anti-with cathode gas diffusion electrode structure
Interface is answered, place is provided for carbon dioxide electrochemical reaction；Storage contains saturation CO in electrolyte-supported layer 72Electrolyte or
Electrolyte and CO2Two phase flow solution；Diaphragm is set between solution electrode plate 8 and anode flow field board 4.
In order to realize the update of solution electrode plate cavity electrolyte inside, solution electrode plate 8 further includes several charging and discharging ditches
Slot 4-2 is arranged in parallel on the side of 8 first insulating surfaces 4-0 of solution electrode plate, wherein groove 4-2 one end and electrolyte cavity
4-1 is connected, and opposite end is connected with mass transfer channel, to realize that reactant is flowed into electrolyte cavity 4-1 and produced from mass transfer channel
Object is flowed into from electrolyte cavity 4-1 in mass transfer channel.Its surface is sealed by bridge architecture 4-3 and upper surface 4-2 (see Fig. 4).
Embodiment 2：The application of membrane electrode configuration electrolytic cell：Influence of the current density to carbon dioxide Electrochemical Properties be
The electrolytic cell of the electroreduction carbon dioxide of verification unique texture of the present invention.In CO2Electroreduction electrolyser construction design process
In, by adjusting the size of current density, it is carried out at the same time CO2The electrochemical Characterization of electro-catalysis reduction is analyzed with reduzate,
Working electrode is by monatomic Ni-N-C gas-diffusion electrodes (effective area 25cm in electrolytic cell in middle above-described embodiment 12) structure
Into, yttrium oxide/Ti electrode and potassium bicarbonate aqueous solution respectively as to electrode with for electrolyte solution.The present invention is to electrolysis
CO in the operational process of pond2Vapour phase reduction product carries out on-line real-time measuremen.Wherein on-line checking utilizes gas chromatograph
(7890B, Agilent instrument) carries out gamut gas-phase product analysis, and wherein reduzate gas phase composition is CO and H2.Fig. 6 is
The influence that current density is distributed electrolytic cell carbon dioxide electroreduction product, wherein 25 DEG C of system operating temperature, saleratus is dense
0.5mol/L is spent, working current density is 0.8~10mA/cm2.From Fig. 6 (a), (b) as can be seen that when reduction current density is
0.8mA/cm2When, CO and H in reduzate2Faradic efficiency be respectively 11.462% and 27.672%；It is further promoted also
Primary current density is 6mA/cm2, CO and H in reduzate2Faradic efficiency be respectively 79.316% and 8.562%；Into one
Step promotes reduction current density to 10mA/cm2When, CO and H in reduzate2Faradic efficiency be respectively 86.840% He
5.723%.
Embodiment 3：The application of membrane electrode configuration electrolytic cell：Solution electrode plate thickness is to carbon dioxide Electrochemical Properties shadow
It rings
In order to verify the electrolytic cell of the electroreduction carbon dioxide of unique texture of the present invention.In CO2Electroreduction electrolyser construction
In design process, CO can be adjusted by adjusting the thickness of solution electrode plate2The size of electroreduction ion resistance.The present embodiment point
Not Kao Cha solution electrode plate thickness be 2mm and 5mm when, CO2The electrochemical behavior of electro-catalysis reduction.Wherein electrolytic cell composition with
Embodiment 2 is consistent.Fig. 7 is that the thickness of solution electrode plate influences electrolytic cell carbon dioxide Electrochemical Properties, wherein system operation
25 DEG C of temperature, saleratus concentration 0.5mol/L, operating potential -1V~-10V.From Fig. 7, it is apparent that solution electrode plate
Thickness be 2mm when, when operating potential be -1V when, system running current density be 0.605mA/cm2, when reduction potential reaches
During to -10.5V, system reducing current density reaches -57.957mA/cm2；The thickness of solution electrode plate is further promoted to 5mm
When, when reduction potential reaches -10.5V, system reducing current density reaches -44.773mA/cm2。
Embodiment 4：The application of membrane electrode configuration electrolytic cell：Electrolyte concentration influences carbon dioxide Electrochemical Properties
In order to verify the electrolytic cell of the electroreduction carbon dioxide of unique texture of the present invention.In CO2Electroreduction electrolyser construction
In design process, the KHCO of various concentration is selected3As electrolyte-supported layer, by adjusting KHCO3Concentration, carried out CO2Electricity
The electrochemical Characterization and reduzate for being catalyzed reduction are analyzed, and wherein electrolytic cell composition is consistent with embodiment 2.Fig. 8 is molten for electrolyte
Liquid concentration influences electrolytic cell carbon dioxide Electrochemical Properties, and wherein system operating temperature is 25 DEG C, KHCO3A concentration of 0.1~
0.6mol/L, operating voltage are -1V~-10.5V.From figure 8, it is seen that during a concentration of 0.1mol/L of saleratus, work as work
When current potential is -1V, system running current density is 0.3056mA/cm2；When reduction potential reaches -10.5V, system reducing electricity
Current density reaches -7.106mA/cm2；When further promoting saleratus concentration to 0.3mol/L, when reduction potential reaches-
During 10.5V, system reducing current density reaches -20.311mA/cm2；Saleratus concentration is further promoted to 0.6mol/L
When, when reduction potential reaches -10.5V, system reducing current density reaches -58.516mA/cm2。
CO is directed in the present invention2Electroreduction gas-phase product is also characterized, and wherein reduzate is CO and H2, electric current is close
It spends for 0.8~6mA/cm2, system operating temperature is 25 DEG C and a concentration of 0.1~0.6mol/L of saleratus.Experimental result
As shown in Fig. 9 (a), (b), it can be seen from the figure that during a concentration of 0.1mol/L of saleratus, when current density is 0.8mA/
cm2When, CO and H2Faradic efficiency be respectively 32.266% and 26.880%, when current density reaches 6mA/cm2, CO and H2
Faradic efficiency be respectively 81.496% and 7.737%；When further promoting a concentration of 0.3mol/L of saleratus, work as electricity
Current density is 0.8mA/cm2,
CO and H2Faradic efficiency be respectively 22.173% and 46.153%, when current density is 6mA/cm2, CO and H2
Da La efficiency be respectively 79.888% and 10.323%；A concentration of 0.6mol/L of saleratus is further promoted, works as electric current
Density is 0.8mA/cm2When, CO and H2Faradic efficiency be respectively 15.886% and 39.910%, when current density reaches
6mA/cm2, CO and H2Faradic efficiency be respectively 79.854% and 10.023%；By changing KHCO3Concentration, same current
CO and H under density2Faradic efficiency without significant changes.It is 0.8mA/cm only in current density2When, H2Faradic efficiency exists
Significant difference.Therefore, the present invention has carried out table to operating voltage in its electrolytic process with the trend that saleratus concentration changes
Sign, it can be seen from the figure that with the promotion of saleratus concentration, operating voltage continuously decreases, and changing rule is provided with impedance
Data it is consistent.
Claims (5)
1. a kind of electrolytic cell of electro-catalysis reduction carbon dioxide, which is characterized in that including cathode assembly, anode assemblies and segmentation
The diaphragm of the two；The anode assemblies is are bonded connected anode end plate, anode current collector plate, anode fluid distribution plate, sun successively
Pole flow-field plate and anode electrode plate；The cathode assembly is to be bonded connected electrolyte-supported layer, solution electrode plate, cathode successively
Gas-diffusion electrode, cathode flow field plate, cathode fluid distribution plate, cathode collector plate and cathode end plate；Diaphragm is set to anode
Between the anode electrode plate of component and the electrolyte-supported layer of cathode assembly；Anode end plate passes through connecting hole and spiral shell with cathode end plate
Bolt assembling is fixed, and then realizes the fixation of cathode and anode component；In the groove of the electrolyte-supported layer insertion solution electrode plate,
The place of carbon dioxide electrochemical reaction is formed with the cathode gas diffusion electrode in embedded cathode flow field plate；The solution electrode
Plate thickness is 2mm~5mm；The electrolyte-supported layer is one kind in asbestos film, silica wool or wool felt.
2. according to the electrolytic cell of electro-catalysis reduction carbon dioxide described in claims 1, which is characterized in that cathode charging and discharging hole
It is respectively arranged in the diagonal positions of cathode end plate, cathode fluid distribution plate, solution electrode plate and cathode flow field plate；Electrolyte
Charging and discharging hole is shifted to install with cathode charging and discharging hole, is respectively arranged at cathode end plate, cathode fluid distribution plate, solution electrode
In the diagonal positions of plate and cathode flow field plate；Anode charging and discharging hole is respectively arranged at anode end plate, anode fluid distribution plate
In the diagonal positions of anode flow field board；When each component assembling together when, the charging and discharging hole on adjacent component is right each other
Should, with formed cathode and anode charging and discharging channel and electrolyte into and out of channel.
3. the electrolytic cell of electro-catalysis reduction carbon dioxide according to claim 1 or 2, which is characterized in that location hole is distinguished
It sets on the cathode flow field plate, solution electrode plate and anode flow field board, when three is assembled together, location hole is right each other
Should, to realize the fixation between adjacent component by locating shaft；Thermometer hole is set on the peripheral wall of cathode and anode flow-field plate and extends
Inside to it, thermocouple is inside placed with, to monitor the temperature in the reactive tank set in the middle part of cathode and anode flow-field plate.
4. the electrolytic cell of electro-catalysis reduction carbon dioxide according to claim 1 or 2, which is characterized in that diaphragm is ion
Exchange membrane.
5. the electrolytic cell of electro-catalysis reduction carbon dioxide according to claim 3, which is characterized in that diaphragm is ion exchange
Film.
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| JP2019056135A (en) * | 2017-09-20 | 2019-04-11 | 株式会社東芝 | Carbon dioxide electrolytic device and carbon dioxide electrolytic method |
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| CN114174558A (en) * | 2019-05-25 | 2022-03-11 | 塞格德大学 | Modular electrolyzer cell and method for converting carbon dioxide to gaseous products at elevated pressure with high conversion rate |
| CN114908363A (en) * | 2022-04-25 | 2022-08-16 | 苏州大学 | Membrane electrode assembly reactor and application thereof |
| CN115161677A (en) * | 2021-04-01 | 2022-10-11 | 中国科学院大连化学物理研究所 | Temperature-controllable carbon dioxide electrolysis device |
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| CN115161677B (en) * | 2021-04-01 | 2023-09-26 | 中国科学院大连化学物理研究所 | Temperature-controllable carbon dioxide electrolysis device |
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| CN116083933B (en) * | 2022-12-06 | 2024-03-19 | 南京大学 | Carbon dioxide electrocatalytic reaction system and reaction method |
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