CN102117917A - Preparation method of cathode of solid oxide fuel cell - Google Patents
Preparation method of cathode of solid oxide fuel cell Download PDFInfo
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- CN102117917A CN102117917A CN2010105977397A CN201010597739A CN102117917A CN 102117917 A CN102117917 A CN 102117917A CN 2010105977397 A CN2010105977397 A CN 2010105977397A CN 201010597739 A CN201010597739 A CN 201010597739A CN 102117917 A CN102117917 A CN 102117917A
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- fuel cell
- cathode
- solid oxide
- oxide fuel
- preparation
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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
Abstract
The invention relates to a preparation method of the cathode of a solid oxide fuel cell, which comprises step as follows: spraying materials are melted and sprayed on the surface of a cathode part through heat energy and impact wave released by explosion generated by a litten gas, wherein the spraying speed of the spraying materials is 500-800 meters/second; the cathode part is made of YSZ (Yttria Stabilized Zirconia) materials; the gas is a mixed gas of oxygen gas and ethyne; and the spraying materials are LSM materials, i.e. La0.8Sr0.2MnO3. The cathode of the solid oxide fuel cell, prepared by adopting the technology, has the advantages of high bonding strength between a coating and a substrate, low workpiece surface temperature, larger surface roughness and the like, can increase the catalytic surface area, has certain porosity, and ensures that oxygen can be easily adsorbed and dissociated.
Description
Technical field
The present invention relates to a kind of preparation method of cell cathode, especially relate to a kind of preparation method of cathode of solid oxide fuel cell.
Background technology
Environment and energy pressure in the face of current society, people can pay close attention to the importance of energy-saving and emission-reduction more, therefore adopt new technology to solve the human problem that is faced, become the common recognition of countries in the world government, Solid Oxide Fuel Cell can solve the human puzzlement that is faced to a certain extent, therefore the Solid Oxide Fuel Cell technology receives much concern at present, Solid Oxide Fuel Cell is because it is a kind of all solid state electrochemical generating unit that chemical energy is directly changed into electric energy, has environmental friendliness, advantages such as energy conversion efficiency height and fuel are scalable, the novel energy transformation technology of people's exploitation under this background, therefore, to the research and the exploration of Solid Oxide Fuel Cell, the mankind's sustainable development is had great importance.
Solid Oxide Fuel Cell mainly contains three parts and constitutes, and is respectively: negative electrode, anode and electrolyte.In this three part, negative electrode is owing to have the ability of adsorb oxygen and the performance of dissociating oxygen, so it has important effect.Anticathode requirement is: have porousness, thereby allow reacting gas to be diffused into three phase boundary easily, surface area is big in addition, can increase catalytic reaction surface.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of cathode of solid oxide fuel cell, it is extensive that this method has the raw material of use, easy to process, the serviceability temperature scope is wide, shock-resistant, intensity is high, surface area is big, characteristics such as porosity height, extensively be suitable for the preparation of fuel cell, have great importance for the extensive use of Solid Oxide Fuel Cell.
The present invention solves the technical scheme that its technical problem takes: a kind of preparation method of cathode of solid oxide fuel cell, heat energy and shock wave that the blast that produces by the gas of lighting discharges melt spraying raw material and are injected in the negative electrode piece surface.
The speed that described spraying raw material is sprayed is 500～800m/s; What described negative electrode part adopted is that the YSZ material is made; Described gas is the mist of oxygen and acetylene; The LSM material that described spraying raw material adopts, i.e. La0.8Sr0.2MnO3.Make the cell cathode of preparing by this method better to carry out work, surface roughness is bigger, and certain porosity is arranged.
The invention has the beneficial effects as follows: because that gas burst is sprayed on the particle temperature that sprays in the spraying process is very low, the actuating force that undergoes phase transition is less, solids crystal grain is difficult for growing up, oxidative phenomena is difficult to take place, in addition, in spraying process, has certain porosity, another characteristics of this method are, the coatings prepared surface roughness is bigger, therefore, adopt this technology to prepare the negative electrode of Solid Oxide Fuel Cell, have coating and substrate combinating strength height, workpiece surface temperature is low, surface roughness is bigger, and it is long-pending to increase catalytic surface, and certain porosity is arranged, advantage such as oxygen is adsorbed easily and dissociate, so this method is fit to the negative electrode of preparation Solid Oxide Fuel Cell very much.
Embodiment
Adopt the gas burst spraying technology to prepare the method for cathode of solid oxide fuel cell, described method is carried out as follows: be the LSM powder of 25-45 μ m with diameter, via control device, make it to enter detonation gun, advance inflow pipe with oxygen (0.05-0.2MPa) and acetylene (0.05-0.15MPa) mist, utilize spark plug that gas is lighted, blast, making powder arrive the spray distance with 500-800m/s speed is on the YSZ matrix of 80-200mm.In addition, the residence time according to desired thickness adjustment nozzle obtains needed negative electrode with this.
In Solid Oxide Fuel Cell, LSM is considered to traditional cathode material, and it has the conductivity height, catalytic activity height, good chemical stability, advantage such as thermal coefficient of expansion is lower, extensive use in field of solid oxide fuel.
The present invention utilizes the gas burst spraying technology to prepare the LSM negative electrode of Solid Oxide Fuel Cell, by formulating reasonable technological parameter, on the YSZ electrolyte, spray La0.8Sr0.2MnO3 (LSM) cathode material, make it to become the monocell of LSM-YSZ-Ni-YSZ structure, and can select suitable thickness according to concrete needs, utilize different technology to adjust coating, to reach industrial requirement.The negative electrode of this method preparation has good effect.
Below in conjunction with embodiment technical scheme of the present invention is described further:
Embodiment 1:
With composition is that La0.8Sr0.2MnO3 (LSM) granularity is the powder of 30 μ m, by the gas burst spraying equipment, making it to arrive spray distance is on the 100mmYSZ substrate, after making its thickness reach 30 μ m, after the cooling, promptly can be made into needed Solid Oxide Fuel Cell LSM negative electrode, concrete technological parameter is as shown in table 1.
Table 1 gas burst spraying parameter
Embodiment 2:
With composition is that La0.8Sr0.2MnO3 (LSM) granularity is the powder of 40 μ m, by the gas burst spraying equipment, making it to arrive spray distance is on the 150mmYSZ substrate, after making its thickness reach 35 μ m, after the cooling, promptly can be made into needed Solid Oxide Fuel Cell LSM negative electrode, concrete technological parameter is as shown in table 2.
Table 2 gas burst spraying parameter
Claims (5)
1. the preparation method of a cathode of solid oxide fuel cell is characterized in that: heat energy and shock wave that the blast that produces by the gas of lighting discharges, melt spraying raw material and be injected in the negative electrode piece surface.
2. the preparation method of cathode of solid oxide fuel cell according to claim 1 is characterized in that: the speed that described spraying raw material is sprayed is 500～800m/s.
3. the preparation method of cathode of solid oxide fuel cell according to claim 1 is characterized in that: what described negative electrode part adopted is that the YSZ material is made.
4. the preparation method of cathode of solid oxide fuel cell according to claim 1, it is characterized in that: described gas is the mist of oxygen and acetylene.
5. the preparation method of cathode of solid oxide fuel cell according to claim 1 is characterized in that: the LSM material that described spraying raw material adopts, i.e. La0.8Sr0.2MnO3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105977397A CN102117917A (en) | 2010-12-21 | 2010-12-21 | Preparation method of cathode of solid oxide fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105977397A CN102117917A (en) | 2010-12-21 | 2010-12-21 | Preparation method of cathode of solid oxide fuel cell |
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| CN102117917A true CN102117917A (en) | 2011-07-06 |
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| CN2010105977397A Pending CN102117917A (en) | 2010-12-21 | 2010-12-21 | Preparation method of cathode of solid oxide fuel cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428664A (en) * | 2015-11-10 | 2016-03-23 | 辽宁石油化工大学 | Preparation method for electrode of solid oxide fuel cell |
| CN107093744A (en) * | 2017-04-17 | 2017-08-25 | 北京矿冶研究总院 | Preparation method of low-temperature solid fuel cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885601A (en) * | 2006-05-19 | 2006-12-27 | 中国矿业大学(北京) | Method for preparing solid oxide fuel cell cathode load type half-cell |
| CN101339997A (en) * | 2007-07-06 | 2009-01-07 | 中国科学院大连化学物理研究所 | Membrane electrode component of medium temperature solid-oxide fuel cell and preparation thereof |
| CN101859902A (en) * | 2010-06-11 | 2010-10-13 | 苏州雅典娜科技有限公司 | Solid oxide fuel cell electrode and preparation process thereof |
-
2010
- 2010-12-21 CN CN2010105977397A patent/CN102117917A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885601A (en) * | 2006-05-19 | 2006-12-27 | 中国矿业大学(北京) | Method for preparing solid oxide fuel cell cathode load type half-cell |
| CN101339997A (en) * | 2007-07-06 | 2009-01-07 | 中国科学院大连化学物理研究所 | Membrane electrode component of medium temperature solid-oxide fuel cell and preparation thereof |
| CN101859902A (en) * | 2010-06-11 | 2010-10-13 | 苏州雅典娜科技有限公司 | Solid oxide fuel cell electrode and preparation process thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428664A (en) * | 2015-11-10 | 2016-03-23 | 辽宁石油化工大学 | Preparation method for electrode of solid oxide fuel cell |
| CN105428664B (en) * | 2015-11-10 | 2017-12-08 | 辽宁石油化工大学 | A kind of preparation method of the electrode of SOFC |
| CN107093744A (en) * | 2017-04-17 | 2017-08-25 | 北京矿冶研究总院 | Preparation method of low-temperature solid fuel cell |
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Application publication date: 20110706 |