CN111206255A - A kind of PEM electrolyzer current collector structure and its manufacturing process - Google Patents
A kind of PEM electrolyzer current collector structure and its manufacturing process Download PDFInfo
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- CN111206255A CN111206255A CN202010123032.6A CN202010123032A CN111206255A CN 111206255 A CN111206255 A CN 111206255A CN 202010123032 A CN202010123032 A CN 202010123032A CN 111206255 A CN111206255 A CN 111206255A
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- titanium
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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
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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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
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
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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
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
一种PEM电解槽集电器结构及其制造工艺，属于集电器技术领域。本发明包括两片缓冲钛网和一片承压钛网，承压钛网夹于两片缓冲钛网中间。本发明结构合理，稳定性高，同时不会磨损极板和膜电极，能有效保证电解槽的工作效率。
A PEM electrolytic cell current collector structure and a manufacturing process thereof belong to the technical field of current collectors. The invention includes two buffer titanium meshes and one pressure-bearing titanium mesh, and the pressure-bearing titanium mesh is sandwiched between the two buffer titanium meshes. The invention has reasonable structure and high stability, and at the same time, the pole plate and the membrane electrode will not be worn away, and the working efficiency of the electrolytic cell can be effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of current collectors, in particular to a current collector structure of a PEM (proton exchange membrane) electrolytic cell and a manufacturing process thereof.
Background
Hydrogen is considered as the most ideal energy carrier because of its advantages of high efficiency, cleanness, storage and transportation, etc. Proton Exchange Membrane (PEM) water electrolysis technology is receiving increasing attention as the most simple and efficient method for preparing pure hydrogen at present.
The proton exchange membrane water electrolysis device has wide application prospect due to high energy efficiency, high gas purity and small size and light weight. According to the technical characteristics of PEM water electrolysis, the water electrolysis device can be divided into an electrolysis bath, an auxiliary frame, a power supply and a controller.
The key technology of the water electrolysis device is an electrolytic bath, and the performance parameters of the electrolytic bath directly influence the technical performance of hydrogen production by water electrolysis. The electrolytic cell is mainly composed of a cathode plate, an anode plate, a membrane electrode, a cathode current collector, an anode current collector and the like. The cathode current collector and the anode current collector uniformly distribute current to the membrane electrode, are passages for inputting and outputting substances, and are key parts for researching PEM electrolytic cells.
At present, porous titanium materials such as titanium mesh, sintered titanium plate, titanium fiber felt and the like are mostly adopted for the current collector, the current collector has high strength and good stability, and special current collectors such as carbon cloth, carbon paper and the like are also used. In general, current collectors are used in combination with sealing materials in a single-layer material or a plurality of layers of the same type.
In many PEM electrolytic cell products on the market at present, the current collectors are often used in a way that a plurality of titanium meshes are simply and roughly overlapped together, deformation is easy to occur in the use process, and the abrasion to a polar plate and a membrane electrode is serious, so that the working efficiency of the electrolytic cell is influenced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a PEM (proton exchange membrane) electrolytic cell current collector structure and a manufacturing process thereof, wherein the PEM electrolytic cell current collector structure is reasonable in structure and high in stability, does not abrade a polar plate and a membrane electrode, and can effectively ensure the working efficiency of an electrolytic cell.
The purpose of the invention is realized by the following technical scheme:
a current collector structure of a PEM (proton exchange membrane) electrolytic cell comprises two buffer titanium nets and a pressure-bearing titanium net, wherein the pressure-bearing titanium net is clamped between the two buffer titanium nets.
The invention ensures the structural stability of the whole current collector and prevents deformation through the middle pressure-bearing titanium mesh, and the buffer titanium meshes on the two sides respectively contact and attach the polar plate and the membrane electrode to prevent abrasion to the polar plate and the membrane electrode. Thereby ensuring the stability of the structure and performance of the whole current collector.
Preferably, the buffer titanium mesh is a titanium mesh with thin lines, and the pressure-bearing titanium mesh is a titanium mesh with thick lines. The buffering titanium net needs to be directly attached to the polar plate and the membrane electrode, and the thin titanium net is relatively soft and not easy to wear the polar plate and the membrane electrode; the pressure-bearing titanium mesh needs to support the whole current collector, and the titanium mesh with thick lines has higher structural strength and is not easy to deform.
Preferably, the buffer titanium mesh is a punching type titanium mesh, and the pressure-bearing titanium mesh is a woven type titanium mesh. The punching titanium mesh has higher flatness and thinner average thickness, and is easier to prevent the polar plate and the membrane electrode from being abraded; the line strength of the woven titanium mesh is easier to guarantee, so that the whole structure is higher in strength.
Preferably, the edge of the buffer titanium mesh is provided with a protective frame. The protective frame is mainly used for protecting sharp edges of the buffer titanium mesh and improving safety.
In the present invention, the protective frame is preferably a polyester film.
Preferably, the protective frame is provided with fixing holes. The fixing hole facilitates the fixing operation at the time of installation.
Preferably, the edge of the pressure-bearing titanium mesh is provided with a sealing frame. The sealing frame mainly plays a role in sealing, and certainly plays a certain protection role.
Preferably, the sealing frame is a silica gel cushion.
The invention also provides a manufacturing process of the PEM electrolytic cell collector, which comprises the following steps:
processing a buffer titanium mesh with thin lines by adopting a stamping process;
processing a pressure-bearing titanium mesh with thicker wire strips by adopting a weaving process;
and clamping two buffer titanium nets at two sides of one pressure-bearing titanium net and fixing.
Preferably, the present invention further comprises: and a polyester film protective frame is bonded at the edge of the buffer titanium net, and a silica gel cushion sealing frame is bonded at the edge of the pressure-bearing titanium net.
The invention has the advantages that:
1. reasonable structure, high stability, no abrasion to the polar plate and the membrane electrode, and effective guarantee of the working efficiency of the electrolytic cell.
2. The installation of being convenient for is fixed, and the leakproofness is reliable simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a buffered titanium mesh in accordance with one embodiment of the present invention;
fig. 3 is a schematic structural diagram of a pressure-bearing titanium mesh according to an embodiment of the invention.
1-buffering titanium net; 2-bearing titanium mesh; 3-pole plate; 4-a membrane electrode; 5-protecting the border; 6-sealing the frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A current collector structure of a PEM (proton exchange membrane) electrolytic cell comprises two buffer titanium nets 1 and a pressure-bearing titanium net 2, wherein the pressure-bearing titanium net 2 is clamped between the two buffer titanium nets 1.
The invention ensures the structural stability of the whole current collector and prevents deformation through the middle pressure-bearing titanium mesh 2, and the buffer titanium meshes 1 on the two sides respectively contact and attach the polar plate 3 and the membrane electrode 4, thereby preventing the polar plate 3 and the membrane electrode 4 from being abraded. Thereby ensuring the stability of the structure and performance of the whole current collector.
Specifically, the buffer titanium mesh 1 is a titanium mesh with thin lines, and the pressure-bearing titanium mesh 2 is a titanium mesh with thick lines. The buffering titanium net needs to be directly attached to the polar plate and the membrane electrode, and the thin titanium net is relatively soft and not easy to wear the polar plate and the membrane electrode; the pressure-bearing titanium mesh needs to support the whole current collector, and the titanium mesh with thick lines has higher structural strength and is not easy to deform. And the buffer titanium net 1 is a stamping type titanium net, and the pressure-bearing titanium net 2 is a woven type titanium net. The punching titanium mesh has higher flatness and thinner average thickness, and is easier to prevent the polar plate and the membrane electrode from being abraded; the line strength of the woven titanium mesh is easier to guarantee, so that the whole structure is higher in strength.
In addition, a polyester film protective frame 5 is arranged at the edge of the buffer titanium mesh 1. The protective frame is mainly used for protecting sharp edges of the buffer titanium mesh, safety is improved, and meanwhile certain sealing performance is achieved. And the protective frame 5 is provided with a fixing hole. The fixing hole facilitates the fixing operation at the time of installation. The edge of the pressure-bearing titanium mesh 2 is provided with a silica gel cushion sealing frame 6. The sealing frame mainly plays a role in sealing, and certainly plays a certain protection role. The sealing performance is realized by fixedly connecting two protective frames of the buffering titanium net and a sealing frame of the pressure-bearing titanium net.
The invention also provides a manufacturing process of the PEM electrolytic cell collector, which comprises the following steps:
processing a buffer titanium net with a thinner line by adopting a stamping process, and bonding a polyester film protective frame on the edge of the buffer titanium net;
processing a pressure-bearing titanium net with thicker wire strips by adopting a weaving process, and bonding a silica gel cushion sealing frame at the edge of the pressure-bearing titanium net;
and clamping two buffer titanium nets at two sides of one pressure-bearing titanium net and fixing.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A current collector structure of a PEM (proton exchange membrane) electrolytic cell is characterized by comprising two buffering titanium nets and a pressure-bearing titanium net, wherein the pressure-bearing titanium net is clamped between the two buffering titanium nets.
2. The PEM electrolyser current collector structure of claim 1 wherein said buffer titanium mesh is a finer wire titanium mesh and said pressure bearing titanium mesh is a coarser wire titanium mesh.
3. The PEM electrolyser current collector structure of claim 1, wherein said buffer titanium mesh is a stamped titanium mesh and said pressure bearing titanium mesh is a woven titanium mesh.
4. A PEM electrolyser current collector structure as claimed in claim 1, wherein said buffer titanium mesh edge is provided with a protective border.
5. A PEM electrolyzer current collector structure according to claim 4, wherein said protective border is a polyester film.
6. A PEM electrolyzer current collector structure according to claim 4, wherein said protective border is provided with fastening holes.
7. A PEM electrolyser current collector structure as claimed in claim 1 wherein said pressure-bearing titanium mesh edges are provided with a sealed border.
8. A PEM electrolyser current collector structure as claimed in claim 7 wherein said sealed border is a silicone cushion.
9. A process for manufacturing a PEM electrolyser current collector, comprising:
processing a buffer titanium mesh with thin lines by adopting a stamping process;
processing a pressure-bearing titanium mesh with thicker wire strips by adopting a weaving process;
and clamping two buffer titanium nets at two sides of one pressure-bearing titanium net and fixing.
10. The PEM electrolyzer current collector manufacturing process of claim 9, further comprising: and a polyester film protective frame is bonded at the edge of the buffer titanium net, and a silica gel cushion sealing frame is bonded at the edge of the pressure-bearing titanium net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123032.6A CN111206255A (en) | 2020-02-27 | 2020-02-27 | A kind of PEM electrolyzer current collector structure and its manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010123032.6A CN111206255A (en) | 2020-02-27 | 2020-02-27 | A kind of PEM electrolyzer current collector structure and its manufacturing process |
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| CN111206255A true CN111206255A (en) | 2020-05-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067931A (en) * | 1991-06-27 | 1993-01-13 | 德·诺拉·帕尔梅利有限公司 | Make the new device and the novel method of relevant alkali and acid with the electrochemical decomposition salts solution |
| CN103469245A (en) * | 2013-09-04 | 2013-12-25 | 蓝星(北京)化工机械有限公司 | Ionic membrane electrolytic bath |
| CN203474902U (en) * | 2013-08-07 | 2014-03-12 | 杨毅 | Electrolytic cell for preparing Brown gas by utilizing electrolysed water |
| CN212025474U (en) * | 2020-02-27 | 2020-11-27 | 浙江高成绿能科技有限公司 | Current collector structure of PEM (proton exchange membrane) electrolytic cell |
-
2020
- 2020-02-27 CN CN202010123032.6A patent/CN111206255A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067931A (en) * | 1991-06-27 | 1993-01-13 | 德·诺拉·帕尔梅利有限公司 | Make the new device and the novel method of relevant alkali and acid with the electrochemical decomposition salts solution |
| CN203474902U (en) * | 2013-08-07 | 2014-03-12 | 杨毅 | Electrolytic cell for preparing Brown gas by utilizing electrolysed water |
| CN103469245A (en) * | 2013-09-04 | 2013-12-25 | 蓝星(北京)化工机械有限公司 | Ionic membrane electrolytic bath |
| CN212025474U (en) * | 2020-02-27 | 2020-11-27 | 浙江高成绿能科技有限公司 | Current collector structure of PEM (proton exchange membrane) electrolytic cell |
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Application publication date: 20200529 |