CN115064712A - Preparation method of nanoparticle-coated composite cathode material - Google Patents
Preparation method of nanoparticle-coated composite cathode material Download PDFInfo
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- 239000010406 cathode material Substances 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011259 mixed solution Substances 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000002019 doping agent Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000012159 carrier gas Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012153 distilled water Substances 0.000 claims abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 8
- 239000010453 quartz Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 150000001768 cations Chemical class 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 abstract description 5
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229910002207 La0.8Sr0.2MnO3–δ Inorganic materials 0.000 description 9
- 229910002206 La0.8Sr0.2MnO3−δ Inorganic materials 0.000 description 9
- 238000005118 spray pyrolysis Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001453 impedance spectrum Methods 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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- 239000013077 target material Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8882—Heat treatment, e.g. drying, baking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
- H01M4/9025—Oxides specially used in fuel cell operating at high temperature, e.g. SOFC
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
-
- 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 discloses a preparation method of a nanoparticle-coated composite cathode material, and belongs to the field of fuel cells. The method adds Ce (NO) 3 ) 3 Dissolving the doping agent and ammonia water in distilled water, adding perovskite type cathode powder into the solution, placing the mixed solution into an ultrasonic atomizer after ultrasonic dispersion, conveying atomized fine liquid drops into a quartz tube by carrier gas, sequentially carrying out heat treatment by four electric furnaces at the temperature of 250 ℃, 450 ℃, 650 ℃ and 850 ℃, and finally collecting the liquid drops by a filter to obtain the nanoparticle-coated composite cathode material. The preparation method has the advantages that the types of metal cations in the solution are fewer, and more accurate chemical composition and better chemical compatibility can be obtained.And controlling the residence time of the liquid drops in the electric furnace through the carrier gas flow, so that the liquid drops are subjected to drying, dehydration, reaction and crystallization in sequence to obtain the composite cathode material with the size of nano level.
Description
Technical Field
The invention relates to a preparation method of a cathode material, in particular to a preparation method of a composite cathode material coated with nano-particles.
Background
The fuel cell is a fourth generation power generation technology following water power, firepower and nuclear energy, and is a device for directly converting chemical energy of fuel into electric energy. Fuel cells are receiving much attention because they have great potential for development in stationary power stations, portable mobile power sources, and particularly in the field of sustainable energy development. Compared with the conventional power generation device, the fuel cell has high energy conversion efficiency, and SO 2 、NO x And CO 2 And the exhaust emission is low.
The Solid Oxide Fuel Cell (SOFC) is an all-solid-state energy conversion device which can directly convert chemical energy of fuel into electric energy, and has the outstanding advantages of high efficiency, environmental friendliness and the like. The traditional SOFC has the working temperature of 800-1000 ℃ generally, and the operation at the high temperature brings many problems: first, the choice of materials is limited, for example, metal alloy based interconnect materials; secondly, the problem of compatibility is that reaction can occur among all components of the SOFC at high temperature; finally, the preparation cost is high. Therefore, development of medium and low temperature SOFCs is a current research focus.
One key issue in improving the performance of SOFCs at medium and low temperatures is the cathode performance. Cathode performance is determined by two factors: material intrinsic properties and electrode structure. Although intrinsic properties such as catalytic activity and electrical conductivity are of paramount importance, the performance of the cathode material is largely dependent on the electrode structure. In addition to the use of highly catalytic and highly conductive materials for the cathode, the achievement of extremely high current densities requires finely controlled electrode structures, which require the electrochemically active three-phase boundary (TPB) region between the electron, ion and gas phases to be as large as possible. Based on this, one widely used cathode material is a nanocomposite cathode composed of a nano-sized electronically conductive perovskite oxide and an ionically conductive oxide.
In recent years, various methods for preparing a nano cathode material have been developed, such as a sol-gel method, a hydrothermal method, a coprecipitation method, a spray pyrolysis method, and the like. Among these methods, spray pyrolysis has proven to be an economical method for preparing electrodes having nanostructures. The principle of the spray pyrolysis method is that a metal salt solution is sprayed into a high-temperature atmosphere (generally 900 ℃) in a mist shape, at the moment, the evaporation of a solvent and the thermal decomposition of the metal salt are immediately caused, and then a solid phase is precipitated due to supersaturation, so that the nano powder is directly obtained. However, there are some disadvantages to the preparation of nanocomposite cathodes using spray pyrolysis: one is that in order to tightly control the chemical composition of the target material, it is desirable that the species of metal cations in the solution be as small as possible. And to prepare a composite cathode, a variety of metal cations are used. At the moment, the spray pyrolysis method is adopted, so that chemical reaction between the electronic conductive perovskite oxide and the ionic conductive oxide can be caused, and the chemical compatibility is poor; secondly, the atomized liquid drops are directly sprayed into a high-temperature atmosphere of 900 ℃, excessive temperature can lead precipitated crystal grains to excessively grow, the proportion of nano-scale powder is reduced, and the composite effect is poor.
Disclosure of Invention
The invention aims to: the invention aims to provide a preparation method of a nanoparticle-coated composite cathode material, which has less metal cation types in a solution, and can obtain more accurate chemical composition and better chemical compatibility.
The technical scheme is as follows: the preparation method of the nanoparticle-coated composite cathode material comprises the following steps:
(1) adding Ce (NO) 3 ) 3 Dissolving the doping agent in distilled water to prepare a first mixed solution;
(2) adding ammonia water into the first mixed solution, and adjusting the pH value to 7-8 to prepare a second mixed solution;
(3) adding cathode powder into the second mixed solution, and performing ultrasonic dispersion to prepare a third mixed solution;
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, carrying out heat treatment through an electric furnace, and finally collecting through a filter to obtain the nanoparticle-coated composite cathode material.
Preferably, the dopant is Y (NO) 3 ) 3 、La(NO 3 ) 3 、Sm(NO 3 ) 3 、Gd(NO 3 ) 3 Any one of them.
Preferably, the dopant is reacted with Ce (NO) 3 ) 3 The molar ratio of (1) to (4-9).
Preferably, in the first mixed solution, Ce (NO) 3 ) 3 The concentration of (b) is 0.08-0.1 mol/L.
Preferably, the cathode powder is La 1-x Sr x MnO 3-δ (0<x<0.5)、Ba 1-x Sr x Co 1-y Fe y O 3-δ (0<x<0.5，0<y<0.5)、Sm 1-x Sr x CoO 3-δ (0<x<0.5) of the above-mentioned compounds; the particle size of the cathode powder is 50-100 nm.
Preferably, in the third mixed solution, Ce (NO) 3 ) 3 The molar ratio of the carbon powder to the cathode powder is 1 (1-4).
Preferably, the carrier gas flow is 1-2L/min.
Preferably, the number of the electric furnaces for heat treatment is four, and the heat treatment temperatures of the four electric furnaces are 250 ℃, 450 ℃, 650 ℃ and 850 ℃ in sequence.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the preparation method provided by the invention has fewer metal cation types in the solution, and can obtain more accurate chemical composition and better chemical compatibility. And the heat treatment process of the method is that the atomized liquid drops sequentially pass through four electric furnaces with different temperatures of 250 ℃, 450 ℃, 650 ℃ and 850 ℃ by carrier gas, the residence time of the liquid drops in the electric furnaces is controlled by the flow of the carrier gas, so that the liquid drops are dried, dehydrated, reacted and crystallized, and finally the composite cathode material coated by the nano-scale particles is obtained.
Drawings
FIG. 1 is an electrochemical AC impedance spectrum of a sample at 800 ℃;
FIG. 2 is the I-V curve at 800 ℃ for a cell with the corresponding sample as cathode;
FIG. 3 is a TEM image of the nanoparticle-coated composite cathode prepared in example 2.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
The preparation method of the nanoparticle-coated composite cathode material comprises the following steps:
(1) adding Ce (NO) 3 ) 3 Dissolving the doping agent in distilled water to obtain a first mixed solution (the doping agent is Sm (NO) 3 ) 3 Dopant with Ce (NO) 3 ) 3 Is 1:4, Ce (NO) 3 ) 3 The concentration of (b) is 0.1 mol/L);
(2) adding ammonia water into the first mixed solution, and adjusting the pH value to 7-8 to prepare a second mixed solution;
(3) adding cathode powder into the second mixed solution, and performing ultrasonic dispersion to obtain third mixed solution (the cathode powder is La) 0.8 Sr 0.2 MnO 3-δ (see dos Santos-G Losilla E R Martiz L, Losilla E R Martiz n F, et al. Novel micro structural constructs to enhance the electrochemical performance of La 0.8 Sr 0.2 MnO 3−δ cathodes[J]. ACS Applied Materials & Interfaces, 2015, 7(13): 7197-7205.)，Ce(NO 3 ) 3 And La 0.8 Sr 0.2 MnO 3-δ In a molar ratio of 1:2.3, La 0.8 Sr 0.2 MnO 3-δ The particle size of the powder is 50-100 nm);
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, sequentially performing heat treatment through four electric furnaces at the heat treatment temperatures of 250 ℃, 450 ℃, 650 ℃ and 850 ℃, and finally collecting the liquid drops through a filter to obtain the nanoparticle-coated composite cathode material. The carrier gas flow rate is 1-2L/min.
Example 2
The preparation method of the nanoparticle-coated composite cathode material comprises the following steps:
(1) adding Ce (NO) 3 ) 3 Doping of the siliconDissolving the agent in distilled water to obtain a first mixed solution (doping agent Sm (NO)) 3 ) 3 Dopant with Ce (NO) 3 ) 3 Is 1:4, Ce (NO) 3 ) 3 The concentration of (b) is 0.1 mol/L);
(2) adding ammonia water into the first mixed solution, and adjusting the pH value to 7-8 to prepare a second mixed solution;
(3) adding cathode powder into the second mixed solution, and performing ultrasonic dispersion to obtain third mixed solution (the cathode powder is La) 0.8 Sr 0.2 MnO 3-δ ，Ce(NO 3 ) 3 And La 0.8 Sr 0.2 MnO 3-δ In a molar ratio of 1:1.5, La 0.8 Sr 0.2 MnO 3-δ The particle size of the powder is 50-100 nm);
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, sequentially performing heat treatment through four electric furnaces at the heat treatment temperatures of 250 ℃, 450 ℃, 650 ℃ and 850 ℃, and finally collecting the liquid drops through a filter to obtain the nanoparticle-coated composite cathode material. The carrier gas flow rate is 1-2L/min.
Example 3
The preparation method of the nanoparticle-coated composite cathode material comprises the following steps:
(1) adding Ce (NO) 3 ) 3 Dissolving the doping agent in distilled water to obtain a first mixed solution (the doping agent is Sm (NO) 3 ) 3 Dopant with Ce (NO) 3 ) 3 Is 1:4, Ce (NO) 3 ) 3 The concentration of (b) is 0.1 mol/L);
(2) adding ammonia water into the first mixed solution, and adjusting the pH value to 7-8 to prepare a second mixed solution;
(3) adding cathode powder into the second mixed solution, and performing ultrasonic dispersion to obtain third mixed solution (the cathode powder is La) 0.8 Sr 0.2 MnO 3-δ ，Ce(NO 3 ) 3 And La 0.8 Sr 0.2 MnO 3-δ In a molar ratio of 1:1, La 0.8 Sr 0.2 MnO 3-δ The particle size of the powder is 50-100 nm);
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, sequentially performing heat treatment through four electric furnaces at the heat treatment temperatures of 250 ℃, 450 ℃, 650 ℃ and 850 ℃ sequentially, and finally collecting the liquid drops through a filter to obtain the nanoparticle-coated composite cathode material. The carrier gas flow rate is 1-2L/min.
Comparative example 1
(1) Adding Ce (NO) 3 ) 3 Dissolving the doping agent in distilled water to obtain a first mixed solution (the doping agent is Sm (NO) 3 ) 3 Dopant with Ce (NO) 3 ) 3 Is 1:4, Ce (NO) 3 ) 3 The concentration of (b) is 0.1 mol/L);
(2) adding ammonia water into the first mixed solution, and adjusting the pH value to 7-8 to prepare a second mixed solution;
(3) adding cathode powder into the second mixed solution, and performing ultrasonic dispersion to obtain third mixed solution (the cathode powder is La) 0.8 Sr 0.2 MnO 3-δ ， Ce(NO 3 ) 3 And La 0.8 Sr 0.2 MnO 3-δ In a molar ratio of 1:1.5, La 0.8 Sr 0.2 MnO 3-δ The particle size of the powder is 50-100 nm);
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, carrying out heat treatment through an electric furnace at the temperature of 900 ℃, and finally collecting the liquid drops through a filter to obtain the composite cathode material. The carrier gas flow rate is 1-2L/min.
Comparative example 2
(1) Adding Ce (NO) 3 ) 3 Dissolving the doping agent in distilled water to obtain a first mixed solution (the doping agent is Sm (NO) 3 ) 3 Dopant with Ce (NO) 3 ) 3 Is 1:4, Ce (NO) 3 ) 3 The concentration of (b) is 0.1 mol/L);
(2) adding La (NO) 3 ) 3 、Sr(NO 3 ) 2 And Mn (NO) 3 ) 2 Weighing according to a molar ratio of 4:1:5, and dissolving in distilled water to obtain a second mixed solution, Mn (NO) 3 ) 2 The concentration of (b) is 0.1 mol/L;
(3) in thatAdding the first mixed solution into the second mixed solution, uniformly mixing, adding ammonia water, adjusting the pH value to 7-8, and preparing a third mixed solution (the first mixed solution and the second mixed solution are according to Ce (NO) 3 ) 3 With Mn (NO) 3 ) 2 In a 1:1.2 molar ratio);
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, carrying out heat treatment through an electric furnace at the temperature of 900 ℃, and finally collecting the liquid drops through a filter to obtain the composite cathode material. The carrier gas flow rate is 1-2L/min.
FIG. 1 is an electrochemical AC impedance spectrum of a sample at 800 deg.C, corresponding to polarization resistances of 0.091, 0.076, 0.048, 0.029 and 0.034 Ω cm 2 The electrochemical performance of the cathode material obtained by the method is obviously improved.
FIG. 2 is an I-V curve at 800 ℃ for a cell having a cathode corresponding to a sample, wherein the maximum power densities of the cells are 122, 149, 203, 284 and 250 mW cm -2 The battery performance of the cathode material prepared by the method is obviously improved.
Fig. 3 is a composite cathode material coated with nanoparticles prepared in example 2, and it can be seen that the particle size is around 150 nm.
Claims (9)
1. A preparation method of a nanoparticle-coated composite cathode material is characterized by comprising the following steps:
(1) adding Ce (NO) 3 ) 3 Dissolving the doping agent in distilled water to prepare a first mixed solution;
(2) adding ammonia water into the first mixed solution, and adjusting the pH value to 7-8 to prepare a second mixed solution;
(3) adding cathode powder into the second mixed solution, and performing ultrasonic dispersion to prepare a third mixed solution;
(4) and (3) passing the third mixed solution through an ultrasonic atomizer, conveying the atomized fine liquid drops into a quartz tube by carrier gas, carrying out heat treatment through an electric furnace, and finally collecting through a filter to obtain the nanoparticle-coated composite cathode material.
2. The method of claim 1, wherein the dopant is Y (NO) 3 ) 3 、La(NO 3 ) 3 、Sm(NO 3 ) 3 、Gd(NO 3 ) 3 Any one of them.
3. The method of claim 1, wherein the dopant is mixed with Ce (NO) 3 ) 3 The molar ratio of (A) to (B) is 1 (4-9).
4. The method of claim 1, wherein the first mixture comprises Ce (NO) 3 ) 3 The concentration of (b) is 0.08-0.1 mol/L.
5. The method of claim 1, wherein the cathode powder is La 1-x Sr x MnO 3-δ (0<x<0.5)、Ba 1-x Sr x Co 1-y Fe y O 3-δ (0<x<0.5，0<y<0.5)、Sm 1- x Sr x CoO 3-δ (0<x<0.5).
6. The method for preparing the nanoparticle-coated composite cathode material of claim 1, wherein the particle size of the cathode powder is 50-100 nm.
7. The method of claim 1, wherein Ce (NO) is present in the third mixture 3 ) 3 The molar ratio of the carbon powder to the cathode powder is 1 (1-4).
8. The method for preparing the nanoparticle-coated composite cathode material of claim 1, wherein the carrier gas flow rate is 1-2L/min.
9. The method for preparing the nanoparticle-coated composite cathode material according to claim 1, wherein the number of the electric furnaces for heat treatment is four, and the heat treatment temperatures of the four electric furnaces are 250 ℃, 450 ℃, 650 ℃ and 850 ℃ in sequence.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372353A (en) * | 2008-06-12 | 2009-02-25 | 江苏工业学院 | Method for preparing nano CeO2 power by ultrasonic atomization process |
| CN102420332A (en) * | 2011-11-04 | 2012-04-18 | 上海交通大学 | Chromium poisoning-resistant doped CeO2-coated LaNi0.6Fe0.4O3-delta cathode of solid oxide fuel cell and preparation method thereof |
| CN109301297A (en) * | 2018-11-15 | 2019-02-01 | 中国矿业大学(北京) | A kind of composite ceramic powder and composite solid oxide fuel cell prepared therefrom |
| CN110272115A (en) * | 2019-07-31 | 2019-09-24 | 太原理工大学 | Cu-Ce-Y spherical hollow space composite material and preparation method and application |
| CN111146456A (en) * | 2020-01-22 | 2020-05-12 | 福州大学 | Preparation method of composite cathode material for fuel cell |
| CN112670521A (en) * | 2020-12-28 | 2021-04-16 | 哈尔滨工业大学 | Method for improving stability of solid oxide fuel cell cathode based on stress design |
| CN113258111A (en) * | 2021-06-30 | 2021-08-13 | 中国矿业大学(北京) | Zirconium-based anode-supported solid oxide battery without isolation layer |
| CN113871636A (en) * | 2021-09-30 | 2021-12-31 | 福州大学 | Chromium poisoning resistant nano-structured composite cathode of solid oxide fuel cell |
| CN113991122A (en) * | 2021-09-06 | 2022-01-28 | 中国地质大学(武汉)浙江研究院 | Electrode material with core-shell structure for symmetric solid oxide fuel cell and preparation method and application thereof |
| CN114497589A (en) * | 2020-10-27 | 2022-05-13 | 中国科学院宁波材料技术与工程研究所 | Modified solid oxide fuel cell electrode, in-situ solvothermal preparation method thereof and solid oxide fuel cell |
-
2022
- 2022-08-03 CN CN202210925452.5A patent/CN115064712B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372353A (en) * | 2008-06-12 | 2009-02-25 | 江苏工业学院 | Method for preparing nano CeO2 power by ultrasonic atomization process |
| CN102420332A (en) * | 2011-11-04 | 2012-04-18 | 上海交通大学 | Chromium poisoning-resistant doped CeO2-coated LaNi0.6Fe0.4O3-delta cathode of solid oxide fuel cell and preparation method thereof |
| CN109301297A (en) * | 2018-11-15 | 2019-02-01 | 中国矿业大学(北京) | A kind of composite ceramic powder and composite solid oxide fuel cell prepared therefrom |
| CN110272115A (en) * | 2019-07-31 | 2019-09-24 | 太原理工大学 | Cu-Ce-Y spherical hollow space composite material and preparation method and application |
| CN111146456A (en) * | 2020-01-22 | 2020-05-12 | 福州大学 | Preparation method of composite cathode material for fuel cell |
| CN114497589A (en) * | 2020-10-27 | 2022-05-13 | 中国科学院宁波材料技术与工程研究所 | Modified solid oxide fuel cell electrode, in-situ solvothermal preparation method thereof and solid oxide fuel cell |
| CN112670521A (en) * | 2020-12-28 | 2021-04-16 | 哈尔滨工业大学 | Method for improving stability of solid oxide fuel cell cathode based on stress design |
| CN113258111A (en) * | 2021-06-30 | 2021-08-13 | 中国矿业大学(北京) | Zirconium-based anode-supported solid oxide battery without isolation layer |
| CN113991122A (en) * | 2021-09-06 | 2022-01-28 | 中国地质大学(武汉)浙江研究院 | Electrode material with core-shell structure for symmetric solid oxide fuel cell and preparation method and application thereof |
| CN113871636A (en) * | 2021-09-30 | 2021-12-31 | 福州大学 | Chromium poisoning resistant nano-structured composite cathode of solid oxide fuel cell |
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