CN103074638A - Double-chamber and double-window electrolytic tank for electrochemically preparing gases - Google Patents

Double-chamber and double-window electrolytic tank for electrochemically preparing gases Download PDF

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Publication number
CN103074638A
CN103074638A CN2013100184388A CN201310018438A CN103074638A CN 103074638 A CN103074638 A CN 103074638A CN 2013100184388 A CN2013100184388 A CN 2013100184388A CN 201310018438 A CN201310018438 A CN 201310018438A CN 103074638 A CN103074638 A CN 103074638A
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chamber
electrode
working electrode
reaction tank
reaction
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CN103074638B (en
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杨鹰
汤宏胜
宁晓辉
韩娟
郑建斌
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Northwest University
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Northwest University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/133Renewable energy sources, e.g. sunlight

Abstract

The invention belongs to the technical field of electrochemical and photo-electrochemical experimental research and in particular relates to a double-chamber and double-window electrolytic tank for electrochemically preparing gases. The problem that in the prior art, experimental results are affected by the gas mixing generated in the reaction is solved. In order to solve the problem of the prior art, the technical scheme provided by the invention is as follows: the double-chamber and double-window electrolytic tank for electrochemically preparing the gases comprises a reaction tank and a cover plate, wherein a partition plate is arranged in the reaction tank; the space in the reaction tank is divided into a working electrode reaction chamber and an auxiliary electrode reaction chamber through the partition plate; and a space is formed between the lower edge of the partition plate and the bottom of the reaction tank. According to the invention, effective gas insulation is formed on the surfaces of a working electrode and the auxiliary electrode, so that the accuracy of the experimental result is conveniently controlled; and the double-chamber and double-window electrolytic tank for electrochemically preparing the gases, provided by the invention, has the advantages of simple and compact structure, easiness in operation and practical function.

Description

The two optical window electrolyzers of two air chambers that are used for the electrochemistry preparing gas
Technical field
The invention belongs to electrochemistry and photoelectrochemistry experimental study technical field, be specifically related to the two optical window electrolyzers of a kind of two air chambers for the electrochemistry preparing gas.
Background technology
In the past few decades, energy shortage and environmental degradation become the major issue that affects a national economic development and social stability.Utilize the reproducible decomposing water with solar energy of cleaning to make hydrogen, the hydrogen driver fuel cell power generation that acts as a fuel, hydrogen and airborne combination with oxygen generation water in power generation process, thus formed the green circulatory utilization of " sun power-Hydrogen Energy ".The whole utilization do not have greenhouse gas emission in the process, the input energy derive is free sun power, and raw material and product all are water (hydrogen and oxygen).Therefore, the utilization of this " sun power-Hydrogen Energy " green circulatory is a kind of important solution route that solves energy shortage and environmental degradation.
Solar energy electrochemical decomposition water technology occupies an important position in the green circulatory utilization of " sun power-Hydrogen Energy ".The principle of solar energy electrochemical decomposition water is to utilize N-shaped semiconductor electrode film and p-type semiconductor electrode film respectively as light anode and photocathode, optoelectronic pole absorbs photon energy under the irradiation of sunlight, be oxygen (light anode side) and hydrogen (photocathode side) with water decomposition under the condition that applies or do not apply external voltage.Therefore this is the new energy technology that has very much application prospect, and the research institutions such as institute at home and abroad and colleges and universities have obtained paying attention to widely.
In the research of photoelectrochemistry water of decomposition, the design of photoelectrochemistry reactor is all to play extremely important effect for the accurate parsing of the meticulous control of research process and result of study.In the research of photoelectrochemistry water of decomposition, often by being positioned at the three-electrode system (working electrode of a reaction tank, reference electrode and supporting electrode) study separately the performance that light anode or photocathode obtain optoelectronic pole, this moment, optoelectronic pole was as working electrode, platinized platinum or platinum filament etc. are as supporting electrode, such as document [1]: Accelerating materials development for photoelectrochemical hydrogen production:Standards for methods, definitions, and reporting protocols, Chen Zhebo, etc. Journal of Materials Research. the 25th volume 3-16 page or leaf in 2010.
When studying the photoelectrochemistry water of decomposition performance of light anode, working electrode (light anode) surface produces oxygen, and supporting electrode (such as platinized platinum) surface produces hydrogen; When studying the photoelectrochemistry water of decomposition performance of photocathode, working electrode (photocathode) surface produces hydrogen, and supporting electrode (such as platinized platinum) surface produces oxygen.If use traditional electrolyzer, the oxygen that water of decomposition produces will mix in a space with hydrogen and be difficult to and separate, because experiment need to be analyzed respectively the gas that each electrode produces, after mixing, therefore various gases will produce very large disadvantageous effect for experimental result.Wish is eliminated this impact, can so just can realize producing not interfereing with each other of gas by working electrode and supporting electrode are laid respectively in two electrolyzers, such as document [1], still will increase like this volume and the complexity of experimental system.Purpose of the present invention namely is to mix the problem that causes for the gas that solves the reaction generation.
Summary of the invention
The purpose of this invention is to provide the two optical window electrolyzers of a kind of two air chambers for the electrochemistry preparing gas, mix the problem that causes affecting experimental result with the gas that solves prior art reaction generation.
The problem that exists for solving prior art, technical scheme provided by the invention is: the two optical window electrolyzers of a kind of two air chambers for the electrochemistry preparing gas, comprise reaction tank and cover plate, cover plate is arranged at the opening part of reaction tank, be dismountable being tightly connected between cover plate and the reaction tank, described cover plate is provided with some connectivity ports, its special character is: be provided with dividing plate in the described reaction tank, dividing plate is divided into working electrode reaction chamber and auxiliary electrode reaction chamber two portions with the space in the reaction tank, the upper limb of described dividing plate is concordant with the reaction tank end face, before the dividing plate, back side edge along with electrolyzer before, rear inner wall sealing connects, leave between dividing plate lower rim and the reaction tank bottom and can make electrolytic solution free-pouring space between working electrode reaction chamber and auxiliary electrode reaction chamber, the position of corresponding working electrode reaction chamber and auxiliary electrode reaction chamber is inlaid with respectively the glass window of a light-permeable on the side of reaction tank.
Above-mentioned glass window is silica glass window.
Above-mentioned connectivity port comprises connectivity port, working electrode chamber and connectivity port, supporting electrode chamber, connectivity port, described working electrode chamber is arranged on cover plate corresponding to working electrode reaction chamber top, connectivity port, described supporting electrode chamber is arranged on cover plate corresponding to top, auxiliary electrode reaction chamber, connectivity port, described working electrode chamber comprises the working electrode terminal stud, working electrode chamber reference electrode Link Port, working electrode chamber inlet mouth and working electrode chamber venting port, connectivity port, described supporting electrode chamber comprises the supporting electrode terminal stud, supporting electrode chamber reference electrode Link Port, supporting electrode chamber inlet mouth and supporting electrode chamber venting port.
The present invention has following advantage and effect with respect to prior art:
1, be provided with dividing plate in the reaction tank, dividing plate is divided into working electrode reaction chamber and auxiliary electrode reaction chamber two portions with the space in the reaction tank, has realized effective isolation of working electrode and supporting electrode Surface Creation gas, thereby is convenient to control the accuracy of experimental result;
2, the present invention both can be used for carrying out traditional electrochemistry experiment, can carry out again the photoelectrochemistry experiment, thereby realize the function that traditional electrolyzer can't be realized;
3, the present invention both can be used for carrying out the three-electrode electro Chemical experiment of standard, can carry out again the experiment of two electrode electro Chemicals;
4, the present invention is simple in structure, compact, and easy handling, practical function.
Description of drawings
Fig. 1 is external structure synoptic diagram of the present invention;
Fig. 2 is the structural representation of reaction tank of the present invention;
Fig. 3 is the structural representation of cover plate of the present invention;
Fig. 4 is the structural representation of rubber cradle of the present invention;
Fig. 5 uses the synoptic diagram that the present invention is linked and packed working electrode and terminal stud to carry out the photoelectrochemistry experiment;
Fig. 6 is the synoptic diagram that forms two independent air chamber spaces behind the electrolytic solution injection reaction tank;
Fig. 7 is the working electrode synoptic diagram;
Fig. 8 and supporting electrode synoptic diagram;
Wherein, 1-reaction tank, the 2-cover plate, the 3-bolt, 4-reaction tank sealing groove, the 5-dividing plate, 6-working electrode reaction chamber, 7-auxiliary electrode reaction chamber, the 8-glass window, 9-working electrode terminal stud, 10-working electrode chamber inlet mouth, 11-supporting electrode chamber inlet mouth, 12-supporting electrode terminal stud, 13-cover plate for sealing groove, 14-supporting electrode chamber venting port, 15-supporting electrode chamber reference electrode Link Port, 16-working electrode chamber reference electrode Link Port, 17-working electrode chamber venting port, the 18-rubber cradle, 19-banana type plug interface, the 20-banana type plug, the 21-working electrode, the 22-reference electrode, the 23-plug, the 24-supporting electrode.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated:
With reference to Fig. 1, the two optical window electrolyzers of a kind of two air chambers for the electrochemistry preparing gas, comprise reaction tank 1 and cover plate 2, cover plate 2 is arranged at the opening part of reaction tank 1, be dismountable being tightly connected between cover plate 2 and the reaction tank 1, described cover plate 2 is provided with some connectivity ports, be provided with dividing plate 5 in the described reaction tank 1, dividing plate 5 is divided into working electrode reaction chamber 6 and auxiliary electrode reaction chamber 7 two portions with the space in the reaction tank 1, the upper limb of described dividing plate 5 is concordant with reaction tank 1 end face, before the dividing plate 5, before posterior edges and the reaction tank 1, rear inner wall sealing connects, leave between dividing plate 5 lower rims and reaction tank 1 bottom and can make electrolytic solution free-pouring space between working electrode reaction chamber 6 and auxiliary electrode reaction chamber 7, the position of corresponding working electrode reaction chamber 6 and auxiliary electrode reaction chamber 7 is inlaid with respectively the glass window 8 of a light-permeable on the side of reaction tank 1.The position of glass window 8 and size can be made as required, and light source can get final product by the electrode from reaction tank 1 external irradiation to reaction tank 1 inside when only needing assurance work, and in order to reach well light transmission, glass window 8 preferred silica glasss are made.
Above-mentioned connectivity port comprises connectivity port, working electrode chamber and connectivity port, supporting electrode chamber, connectivity port, described working electrode chamber is arranged on the cover plate 1 of working electrode reaction chamber 6 top correspondences, connectivity port, described supporting electrode chamber is arranged on the cover plate 1 of auxiliary electrode reaction chamber 7 top correspondences, connectivity port, described working electrode chamber comprises working electrode terminal stud 9, working electrode chamber reference electrode Link Port 16, working electrode chamber inlet mouth 10 and working electrode chamber venting port 17, connectivity port, described supporting electrode chamber comprises supporting electrode terminal stud 12, supporting electrode chamber reference electrode Link Port 15, supporting electrode chamber inlet mouth 11 and supporting electrode chamber venting port 14.
On the reaction tank 1 and cover plate 2 contacted sides, opening part around working electrode reaction chamber 6 and auxiliary electrode reaction chamber 7 offers reaction tank sealing groove 4, position corresponding to reaction tank sealing groove 4 on the cover plate 2 offers cover plate for sealing groove 13, after sealing groove is embedded in rubber cradle 18, by bolt 3 and nut reaction tank 1 and cover plate 2 are compressed, thereby isolate two air chambers.
Each the port effect of connectivity port, working electrode chamber is as described below:
With reference to Fig. 5 and Fig. 7, working electrode terminal stud 9 is made by electroconductibility good copper alloy or other metal, and terminal stud is banana type plug interface 19 towards a lateral terminal of electrolyzer, and working electrode 21 is connected with it by banana type plug 20; Opposite side directly is connected with electrochemical workstation working electrode wire.
With reference to Fig. 6, working electrode chamber reference electrode Link Port 16 can insert reference electrode 22 or with the salt bridge of reference electrode.When experiment does not need reference electrode (as carrying out the experiment of two electrodes), use plug 23 with this Link Port sealing.
Working electrode chamber inlet mouth 10 can directly be connected with outside gas cylinder or pump feed channel, to be filled with the gas such as nitrogen to working electrode reaction chamber top air chamber for the protection of electrolytic solution or to take away the gas that reaction generates; Perhaps by inlet mouth tracheae is stretched in the electrolytic solution, be filled with the effect that the rare gas elementes such as nitrogen play deoxygenation or stirring; When not needing to pass into gas, with plug inlet mouth is sealed.
Working electrode chamber venting port 17 can be directly be connected with the intake ducting of the detecting instrument such as gas-chromatography, analyzes to realize online instant detection that working electrode surface generates gas.
Each the port effect of connectivity port, supporting electrode chamber is as described below:
With reference to Fig. 5 and Fig. 8, supporting electrode terminal stud 12 is made by electroconductibility good copper alloy or other metal, and terminal stud is banana type plug interface 19 towards a lateral terminal of electrolyzer, and supporting electrode 24 is connected with it by banana type plug 20; Opposite side directly is connected with electrochemical workstation supporting electrode wire.
With reference to Fig. 6, supporting electrode chamber reference electrode Link Port 15 can insert reference electrode 22 or with the salt bridge of reference electrode.When experiment does not need reference electrode (as carrying out the experiment of two electrodes), use plug 23 with this Link Port sealing.
Supporting electrode chamber inlet mouth 11 can directly be connected with outside gas cylinder or pump feed channel, to be filled with the gas such as nitrogen to auxiliary electrode reaction chamber top air chamber for the protection of electrolytic solution or to take away the gas that reaction generates; Perhaps by inlet mouth tracheae is stretched in the electrolytic solution, be filled with the effect that the rare gas elementes such as nitrogen play deoxygenation or stirring; When not needing to pass into gas, with plug inlet mouth is sealed.
Supporting electrode chamber venting port 14 can be directly be connected with the intake ducting of the detecting instrument such as gas-chromatography, analyzes with online instant detection of realizing supporting electrode Surface Creation gas.
Experimentation is given an example: 1, photoelectrochemistry is produced hydrogen and is produced the oxygen experiment, and working electrode and supporting electrode all need illumination,
N-shaped ferric oxide optoelectronic pole is as working electrode (light anode), and silver/silver chloride electrode is as reference electrode (being positioned at anode side), and p-type Red copper oxide is as supporting electrode (photocathode), and electrolytic solution is 0.5 mol/L potassium sulfate solution.Between light anode and photocathode, apply certain voltage, xenon source shines respectively ferric oxide light anode and Red copper oxide photocathode through two silica glass windows 8, the oxygen that the ferric oxide photoanode surface produces is discharged by working electrode chamber venting port 17, and the hydrogen that produces on Red copper oxide photocathode surface is simultaneously discharged by supporting electrode chamber venting port 14.
2, photoelectrochemistry is produced hydrogen and is produced the oxygen experiment, and only working electrode needs illumination,
The N-shaped titanium dioxide photoelectrode is as working electrode (light anode), and silver/silver chloride electrode is as reference electrode (being positioned at anode side), and platinized platinum is as supporting electrode, and electrolytic solution is 0.5 mol/L potassium sulfate solution.Between light anode and supporting electrode, apply certain voltage, xenon source is through silica glass window 8 irradiation titanium dioxide photoelectrodes, the oxygen that produces on its surface is discharged by working electrode chamber venting port 17, produces hydrogen on the platinum plate electrode surface simultaneously and is discharged by supporting electrode chamber venting port 14.
3, electrolytic saltwater experiment,
A platinum plate electrode is as working electrode (anode), and another platinum plate electrode does not use reference electrode as supporting electrode (negative electrode), and electrolytic solution is 5% sodium chloride solution.Apply certain voltage between anode and negative electrode, the chlorine that anode surface produces is discharged by working electrode chamber venting port 17, and the hydrogen that produces at cathode surface is simultaneously discharged by supporting electrode chamber venting port 14.

Claims (3)

1. two air chambers pair optical window electrolyzers that are used for the electrochemistry preparing gas, comprise reaction tank (1) and cover plate (2), cover plate (2) is arranged at the opening part of reaction tank (1), be dismountable being tightly connected between cover plate (2) and the reaction tank (1), described cover plate (2) is provided with some connectivity ports, it is characterized in that: be provided with dividing plate (5) in the described reaction tank (1), dividing plate (5) is divided into working electrode reaction chamber (6) and auxiliary electrode reaction chamber (7) two portions with the space in the reaction tank (1), the upper limb of described dividing plate (5) is concordant with reaction tank (1) end face, before the dividing plate (5), before posterior edges and the reaction tank (1), rear inner wall sealing connects, leave between dividing plate (5) lower rim and reaction tank (1) bottom and can make electrolytic solution free-pouring space between working electrode reaction chamber (6) and auxiliary electrode reaction chamber (7), the position of corresponding working electrode reaction chamber (6) and auxiliary electrode reaction chamber (7) is inlaid with respectively the glass window (8) of a light-permeable on the side of reaction tank (1).
2. two optical window electrolyzers of described two air chambers for the electrochemistry preparing gas according to claim 1, it is characterized in that: described glass window (8) is silica glass window.
3. two optical window electrolyzers of described two air chambers for the electrochemistry preparing gas according to claim 1 and 2, it is characterized in that: the described connectivity port of stating comprises connectivity port, working electrode chamber and connectivity port, supporting electrode chamber, connectivity port, described working electrode chamber is arranged on cover plate (1) corresponding to working electrode reaction chamber (6) top, connectivity port, described supporting electrode chamber is arranged on cover plate (1) corresponding to top, auxiliary electrode reaction chamber (7), connectivity port, described working electrode chamber comprises working electrode terminal stud (9), working electrode chamber reference electrode Link Port (16), working electrode chamber inlet mouth (10) and working electrode chamber venting port (17), connectivity port, described supporting electrode chamber comprises supporting electrode terminal stud (12), supporting electrode chamber reference electrode Link Port (15), supporting electrode chamber inlet mouth (11) and supporting electrode chamber venting port (14).
CN201310018438.8A 2013-01-18 2013-01-18 The two optical window electrolyzer of two air chambers for electrochemistry preparing gas Expired - Fee Related CN103074638B (en)

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Cited By (5)

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CN103388156A (en) * 2013-07-22 2013-11-13 杭州中粮包装有限公司 Ventilation type electrolytic cell for laboratory
CN103952717A (en) * 2014-05-07 2014-07-30 北京化工大学 Photoelectrochemical decomposition water and organic synthesis coupled cascade reaction design method
CN105136676A (en) * 2015-08-25 2015-12-09 广西壮族自治区农业科学院农产品质量安全与检测技术研究所 Photoelectric chemical reaction device
CN110923736A (en) * 2019-10-23 2020-03-27 安徽中研理工仪器设备有限公司 Photoelectrocatalysis chemical reaction electrolytic cell device
CN112198211A (en) * 2020-10-10 2021-01-08 四川轻化工大学 Multifunctional integrated radiation-proof photoelectrochemical test environment box

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CN203080074U (en) * 2013-01-18 2013-07-24 西北大学 Double-air-chamber double-light-window electrolytic tank for electrochemically preparing gas

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CN101586245A (en) * 2009-05-04 2009-11-25 新奥科技发展有限公司 Hydrogen generating reactor, system and gas collection method, light-hydrogen energy conversion efficiency measuring system, and light-hydrogen energy / light-electricity conversion efficiency measuri
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Publication number Priority date Publication date Assignee Title
CN103388156A (en) * 2013-07-22 2013-11-13 杭州中粮包装有限公司 Ventilation type electrolytic cell for laboratory
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CN105136676A (en) * 2015-08-25 2015-12-09 广西壮族自治区农业科学院农产品质量安全与检测技术研究所 Photoelectric chemical reaction device
CN110923736A (en) * 2019-10-23 2020-03-27 安徽中研理工仪器设备有限公司 Photoelectrocatalysis chemical reaction electrolytic cell device
CN112198211A (en) * 2020-10-10 2021-01-08 四川轻化工大学 Multifunctional integrated radiation-proof photoelectrochemical test environment box
CN112198211B (en) * 2020-10-10 2023-01-17 四川轻化工大学 Multifunctional integrated radiation-proof photoelectrochemical test environment box

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