CN114006015A - Method for quickly activating galvanic pile - Google Patents
Method for quickly activating galvanic pile Download PDFInfo
- Publication number
- CN114006015A CN114006015A CN202111287051.3A CN202111287051A CN114006015A CN 114006015 A CN114006015 A CN 114006015A CN 202111287051 A CN202111287051 A CN 202111287051A CN 114006015 A CN114006015 A CN 114006015A
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- Prior art keywords
- fuel
- metering ratio
- cathode
- galvanic pile
- anode
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04828—Humidity; Water content
- H01M8/04835—Humidity; Water content of fuel cell reactants
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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
- Y02E60/50—Fuel cells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a method for quickly activating a galvanic pile, relates to the technical field of galvanic pile activation methods, and particularly relates to a method for quickly activating a galvanic pile. The method comprises the following steps: s1: after the fuel cell is started, firstly introducing nitrogen into the anode side, and then introducing anode fuel, wherein the anode fuel comprises dry hydrogen or humidified hydrogen, and the cathode side is introduced with cathode fuel, and the cathode fuel comprises air or oxygen with a first metering ratio; s2: enabling the fuel cell stack to operate at the working voltage of 0.2V/cell-0.4V/cell; s3: introducing air or oxygen with a second metering ratio into the cathode side, wherein the second metering ratio is larger than the first metering ratio; s4: and repeating the steps S1-S3 for a plurality of times to carry out quick activation, thereby improving the performance of the fuel cell. The effects of simple and efficient activation of the galvanic pile and convenient rapid work are achieved.
Description
Technical Field
The invention relates to the technical field of a galvanic pile activation method, in particular to a method for quickly activating a galvanic pile.
Background
The fuel cell is a chemical device for directly converting chemical energy of fuel into electric energy, is not limited by carnot cycle effect, and takes fuel and oxygen as raw materials; and no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is very little. Proton exchange membrane fuel cells have been receiving more and more attention in recent years due to their characteristics of low temperature starting, simple structure, easy operation, etc.
However, for a newly produced fuel cell stack or a fuel cell stack with a long storage time, in order to make the fuel cell stack obtain better performance more quickly, rapid activation is required to reach the optimal performance state.
Disclosure of Invention
The invention aims to provide a method for quickly activating a galvanic pile, which can simply and efficiently activate the galvanic pile and is convenient for quick operation.
The technical purpose of the invention is realized by the following technical scheme:
a method for rapidly activating a galvanic pile comprises the following steps:
s1: after the fuel cell is started, nitrogen is firstly introduced into the anode side, then anode fuel is introduced, the anode fuel comprises dry hydrogen or humidified hydrogen,
introducing cathode fuel into the cathode side, wherein the cathode fuel comprises air or oxygen with a first metering ratio, and the cathode side is in oxygen-deficient operation;
s2: enabling the fuel cell stack to operate at the working voltage of 0.2V/cell-0.4V/cell;
s3: introducing air or oxygen with a second metering ratio to the cathode side, wherein the second metering ratio is larger than the first metering ratio, and allowing the cathode side to normally operate;
s4: and repeating the steps S1-S3 for a plurality of times to carry out quick activation, thereby improving the performance of the fuel cell.
Furthermore, in step S1, the metering ratio of the anode fuel is 1.5-2.
Further, in step S1, the relative humidity of the anode fuel is 0-100%.
Further, in step S1, the cathode fuel is not humidified.
Further, the first metering ratio is 0.5 to 1.5.
Further, the second metering ratio is 1.9 to 4.0.
Further, in step S1, the cathode is operated at the first metering ratio for 1-20 minutes.
Further, in step S3, the cathode is operated at the second metering ratio for 0.5-3 hours.
In conclusion, the invention has the following beneficial effects:
1. the galvanic pile is quickly activated, and the effect is achieved for 2-3 times or a small number of times;
2. the cathode does not need to be humidified, the system structure is simpler, and additional humidifying equipment is not needed;
3. and the method is simpler without testing according to polarization performance or cyclic voltammetry.
Drawings
FIG. 1 is a U-I diagram of the present invention before activation;
FIG. 2 is a U-I diagram after activation according to the present invention;
FIG. 3 is a comparison of the present invention before and after activation.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the invention.
A method for rapidly activating a galvanic pile comprises the following steps:
s1: after the fuel cell is started, nitrogen is firstly introduced into the anode side, and then sufficient anode fuel is introduced, wherein the anode fuel is dry hydrogen or humidified hydrogen, the metering ratio of the dry hydrogen or the humidified hydrogen is 1.5-2, and the relative humidity is 0-100%;
introducing cathode fuel into the cathode side, wherein the cathode fuel is unhumidified air or oxygen with a first metering ratio (lower metering ratio), and the first metering ratio of the cathode fuel is 0.5-1.5, so that the cathode side runs under oxygen;
s2: operating the fuel cell stack at a lower operating voltage; the lower working voltage of the fuel cell is 0.2V/cell-0.4V/cell, and the running time of the cathode under the first metering ratio is 1-20 minutes;
s3: introducing cathode fuel into the cathode side at a second metering ratio (sufficient amount), wherein the second metering ratio is larger than the first metering ratio; the second metering ratio of the cathode fuel is 1.9-4.0, so that the cathode side can normally operate, and the time of the cathode operating at the second metering ratio is 0.5-3 hours.
S4: repeating the steps S1-S3 for several times (2-3 times are effective), and performing rapid activation.
Introducing unhumidified air or oxygen with a low metering ratio, then operating the fuel cell stack at a low working voltage for a certain time, introducing sufficient air or oxygen to the cathode side, repeating the operation for 3 times, and as shown in figures 1-3, according to the comparison before and after activation, the invention improves the performance of the fuel cell by rapid activation.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (8)
1. A method for rapidly activating an electric pile is characterized by comprising the following steps: the method comprises the following steps:
s1: after the fuel cell is started, nitrogen is firstly introduced into the anode side, then anode fuel is introduced, the anode fuel comprises dry hydrogen or humidified hydrogen,
introducing cathode fuel into the cathode side, wherein the cathode fuel comprises air or oxygen with a first metering ratio, and the cathode side is in oxygen-deficient operation;
s2: enabling the fuel cell stack to operate at the working voltage of 0.2V/cell-0.4V/cell;
s3: introducing air or oxygen with a second metering ratio to the cathode side, wherein the second metering ratio is larger than the first metering ratio, and allowing the cathode side to normally operate;
s4: and repeating the steps S1-S3 for a plurality of times to carry out quick activation, thereby improving the performance of the fuel cell.
2. The method for rapidly activating a galvanic pile according to claim 1, wherein: in step S1, the metering ratio of the anode fuel is 1.5-2.
3. A method for rapidly activating a galvanic pile according to claim 1 or 2, characterized in that: in step S1, the relative humidity of the anode fuel is 0-100%.
4. A method for rapidly activating a galvanic pile according to claim 1 or 2, characterized in that: in step S1, the cathode fuel is not humidified.
5. The method for rapidly activating a galvanic pile according to claim 1, wherein: the first metering ratio is 0.5 to 1.5.
6. The method for rapidly activating a galvanic pile according to claim 5, wherein: the second metering ratio is 1.9 to 4.0.
7. The method for rapidly activating a galvanic pile according to claim 5, wherein: in step S2, the cathode is operated at the first metering ratio for 1 to 20 minutes.
8. The method for rapidly activating a galvanic pile according to claim 6, wherein: in step S3, the cathode is operated at the second metering ratio for 0.5-3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287051.3A CN114006015A (en) | 2021-11-02 | 2021-11-02 | Method for quickly activating galvanic pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111287051.3A CN114006015A (en) | 2021-11-02 | 2021-11-02 | Method for quickly activating galvanic pile |
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| Publication Number | Publication Date |
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| CN114006015A true CN114006015A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111287051.3A Pending CN114006015A (en) | 2021-11-02 | 2021-11-02 | Method for quickly activating galvanic pile |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130236800A1 (en) * | 2012-03-07 | 2013-09-12 | Samsung Electronics Co., Ltd. | Method of activating fuel cell |
| US20160372766A1 (en) * | 2013-07-03 | 2016-12-22 | Robert Bosch Gmbh | Method for starting up a fuel cell |
| CN110943243A (en) * | 2019-12-13 | 2020-03-31 | 浙江锋源氢能科技有限公司 | Activation method of fuel cell stack |
| CN111525156A (en) * | 2020-04-30 | 2020-08-11 | 无锡威孚高科技集团股份有限公司 | Activation method of proton exchange membrane fuel cell stack |
-
2021
- 2021-11-02 CN CN202111287051.3A patent/CN114006015A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130236800A1 (en) * | 2012-03-07 | 2013-09-12 | Samsung Electronics Co., Ltd. | Method of activating fuel cell |
| US20160372766A1 (en) * | 2013-07-03 | 2016-12-22 | Robert Bosch Gmbh | Method for starting up a fuel cell |
| CN110943243A (en) * | 2019-12-13 | 2020-03-31 | 浙江锋源氢能科技有限公司 | Activation method of fuel cell stack |
| CN111525156A (en) * | 2020-04-30 | 2020-08-11 | 无锡威孚高科技集团股份有限公司 | Activation method of proton exchange membrane fuel cell stack |
Non-Patent Citations (1)
| Title |
|---|
| 胡新发;谌敏;廖世军;: "高性能燃料电池催化剂及其5kW常温常压免增湿电堆", 电化学, no. 04, pages 51 - 55 * |
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