CN112563526A - Regeneration method of anode catalyst of hydrogen-oxygen fuel cell - Google Patents
Regeneration method of anode catalyst of hydrogen-oxygen fuel cell Download PDFInfo
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- CN112563526A CN112563526A CN201910916458.4A CN201910916458A CN112563526A CN 112563526 A CN112563526 A CN 112563526A CN 201910916458 A CN201910916458 A CN 201910916458A CN 112563526 A CN112563526 A CN 112563526A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/008—Disposal or recycling of fuel cells
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, which comprises the following steps: carrying out dust removal treatment on the anode to be treated; and roasting the anode subjected to dust removal treatment for 4-8 h at 200-250 ℃ in a pure oxygen atmosphere. The invention solves the problem of efficiency reduction caused by long-term use of the anode of the hydrogen-oxygen fuel cell, avoids the problem of abandonment of the anode due to catalyst failure, recycles energy, reduces the production cost for enterprises and is beneficial to environmental protection; the regeneration method of the anode catalyst is simple, easy to operate and high in regeneration efficiency.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a regeneration method of an anode catalyst of a hydrogen-oxygen fuel cell.
Background
The anode catalyst layer of a hydrogen-oxygen fuel cell is generally composed of a binder, a catalyst carrier-supported active catalyst, and a conductive agent, and the active catalyst is bonded to the catalyst carrier by the binder. The common binder is Polytetrafluoroethylene (PTFE), and the polytetrafluoroethylene is easy to decompose when the durable temperature is 200-260 ℃ and the temperature is higher than 300 ℃. Hydrogen-oxygen fuelThe anode of the battery is in long-term use due to H2Some CO and CH are present in4Impurities like CO, CH4Can occupy the catalytic active site of the active catalyst and block H2A reaction occurs at the catalytically active sites, resulting in a decrease in catalyst activity, i.e. catalyst poisoning. The conventional catalyst regeneration method is generally calcination regeneration at high temperature, but the binder PTFE in the anode catalyst layer of the hydrogen-oxygen fuel cell is decomposed under high-temperature calcination, so the conventional high-temperature calcination method is not suitable for the regeneration of the anode catalyst of the hydrogen-oxygen fuel cell.
Disclosure of Invention
The object of the present invention is to provide a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell at a relatively low temperature.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method of regenerating an anode catalyst for a hydrogen-oxygen fuel cell, comprising the steps of:
carrying out dust removal treatment on the anode to be treated;
and roasting the anode subjected to dust removal treatment for 4-8 hours at 200-250 ℃ in a pure oxygen atmosphere.
Preferably, the flow rate of the pure oxygen is 500-2500L/h.
Preferably, the dust removal treatment is a drying treatment after being washed clean by clean water.
More preferably, the drying condition is drying for 2-4 h at 50-80 ℃.
Preferably, the dust removal process is a purge with oil-free dry compressed air.
More optionally, the pressure of the compressed air is 0.1-1 MPa, and the purging time is 10-30 min.
Compared with the prior art, the invention has the following technical effects: the invention solves the problem of efficiency reduction caused by long-term use of the anode of the hydrogen-oxygen fuel cell, avoids the problem of abandonment of the anode due to catalyst failure, recycles energy, reduces the production cost for enterprises and is beneficial to environmental protection; the regeneration method of the anode catalyst is simple, easy to operate and high in regeneration efficiency.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, which comprises the following steps:
step 1: carrying out dust removal treatment on the anode to be treated;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) in a pure oxygen atmosphere at the temperature of 200-250 ℃ for 4-8 h.
The embodiment of the invention solves the problem of efficiency reduction caused by long-term use of the anode of the hydrogen-oxygen fuel cell, avoids the problem of abandonment of the anode caused by catalyst failure, recycles energy, reduces the production cost for enterprises and is beneficial to environmental protection; the regeneration method of the anode catalyst is simple, easy to operate and high in regeneration efficiency.
As an embodiment, the dust removal treatment in step 1 is to wash the substrate with clean water and then dry the substrate. The dust removal by rinsing with clear water is simple and economic, and the dust removal effect is better. Wherein, after being washed by clean water and dedusted, the raw materials are preferably dried for 2-4 h at 50-80 ℃. The low-temperature drying does not damage the structure of the catalyst, and is favorable for the catalyst to maintain the catalytic activity.
In another embodiment, the dust removal treatment in step 1 is a purge with oil-free dry compressed air. The compressed air has good blowing and dust removing effects and does not need subsequent drying treatment. Wherein the pressure of the compressed air is preferably 0.1-1 MPa, and the purging time is preferably 10-30 min. In order to maintain the structural performance of the anode catalyst, the purging pressure of the compressed air is not excessively high, and under the purging condition, a good dust removal effect can be obtained with low energy consumption.
In the step 2, as an embodiment of the present invention, the flow rate of the pure oxygen is 500 to 2500L/h. The pure oxygen flow is controlled to be H when the hydrogen-oxygen fuel cell works normally210E of flow50 times, the larger the flow of pure oxygen, the more beneficial is the CO generated in the regeneration process2The more efficient the catalyst regeneration is by escaping from the catalyst surface.
The following is a further description with reference to specific examples.
The first embodiment is as follows:
the present embodiment provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, comprising the steps of:
step 1: washing the anode to be treated with clear water, and drying at 50 ℃ for 4 h;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) at 200 ℃ for 8h in a pure oxygen atmosphere, and controlling the flow of pure oxygen to be 500L/h.
After the above simple treatment, the catalyst can be regenerated.
Example two:
the present embodiment provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, comprising the steps of:
step 1: washing the anode to be treated with clear water, and drying at 80 ℃ for 2 h;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) at 250 ℃ for 4h in a pure oxygen atmosphere, and controlling the flow of pure oxygen to be 2500L/h.
Example three:
the present embodiment provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, comprising the steps of:
step 1: washing the anode to be treated with clear water, and drying at 60 ℃ for 3 h;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) for 6 hours at 220 ℃ in a pure oxygen atmosphere, and controlling the flow of pure oxygen to be 1500L/h.
Example four:
the present embodiment provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, comprising the steps of:
step 1: purging the anode to be treated by using oil-free dry compressed air, wherein the pressure of the compressed air is 0.1 MPa, and the purging time is 30 min;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) for 6 hours at 230 ℃ in a pure oxygen atmosphere, and controlling the flow of pure oxygen to be 2000L/h.
Example five:
the present embodiment provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, comprising the steps of:
step 1: purging the anode to be treated by using oil-free dry compressed air, wherein the pressure of the compressed air is 1MPa, and the purging time is 10 min;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) for 6 hours at 230 ℃ in a pure oxygen atmosphere, and controlling the flow of pure oxygen to be 800L/h.
Example six:
the present embodiment provides a method for regenerating an anode catalyst of a hydrogen-oxygen fuel cell, comprising the steps of:
step 1: purging the anode to be treated by using oil-free dry compressed air, wherein the pressure of the compressed air is 0.5 MPa, and the purging time is 20 min;
step 2: and (3) roasting the anode subjected to dust removal treatment in the step (1) for 6 hours at 250 ℃ in a pure oxygen atmosphere, wherein the flow rate of pure oxygen is controlled to 2200L/h.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A method of regenerating an anode catalyst for a hydrogen-oxygen fuel cell, comprising the steps of:
carrying out dust removal treatment on the anode to be treated;
and roasting the anode subjected to dust removal treatment for 4-8 hours at 200-250 ℃ in a pure oxygen atmosphere.
2. The regeneration method according to claim 1, wherein the pure oxygen flow rate is 500 to 2500L/h.
3. The regeneration method of claim 1, wherein the dust removal treatment is a drying treatment after being washed clean with clean water.
4. The regeneration method according to claim 3, wherein the drying treatment is performed at 50 to 80 ℃ for 2 to 4 hours.
5. The regeneration process of claim 1, wherein the dust removal treatment is purging with oil-free dry compressed air.
6. The regeneration method according to claim 5, wherein the pressure of the compressed air is 0.1 to 1MPa, and the purge time is 10 to 30 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910916458.4A CN112563526A (en) | 2019-09-26 | 2019-09-26 | Regeneration method of anode catalyst of hydrogen-oxygen fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910916458.4A CN112563526A (en) | 2019-09-26 | 2019-09-26 | Regeneration method of anode catalyst of hydrogen-oxygen fuel cell |
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| CN112563526A true CN112563526A (en) | 2021-03-26 |
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| CN201910916458.4A Pending CN112563526A (en) | 2019-09-26 | 2019-09-26 | Regeneration method of anode catalyst of hydrogen-oxygen fuel cell |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1750876A (en) * | 2002-01-29 | 2006-03-22 | 埃克森美孚研究工程公司 | Catalyst regeneration |
| CN101048909A (en) * | 2004-10-29 | 2007-10-03 | 丰田自动车株式会社 | Fuel cell system and method |
| JP2008049282A (en) * | 2006-08-25 | 2008-03-06 | National Institute Of Advanced Industrial & Technology | Method and apparatus for regenerating noble metal supported catalyst |
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- 2019-09-26 CN CN201910916458.4A patent/CN112563526A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1750876A (en) * | 2002-01-29 | 2006-03-22 | 埃克森美孚研究工程公司 | Catalyst regeneration |
| CN101048909A (en) * | 2004-10-29 | 2007-10-03 | 丰田自动车株式会社 | Fuel cell system and method |
| JP2008049282A (en) * | 2006-08-25 | 2008-03-06 | National Institute Of Advanced Industrial & Technology | Method and apparatus for regenerating noble metal supported catalyst |
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Application publication date: 20210326 |