CN111211332A - Medium-temperature solid oxide fuel cell cathode material - Google Patents
Medium-temperature solid oxide fuel cell cathode material Download PDFInfo
- Publication number
- CN111211332A CN111211332A CN202010033146.1A CN202010033146A CN111211332A CN 111211332 A CN111211332 A CN 111211332A CN 202010033146 A CN202010033146 A CN 202010033146A CN 111211332 A CN111211332 A CN 111211332A
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- solid oxide
- oxide fuel
- cathode material
- temperature solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- H01M4/9041—Metals or alloys
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inert Electrodes (AREA)
Abstract
The invention discloses a cathode material of an intermediate-temperature solid oxide fuel cell, which comprises the following raw materials: GdBAySr(1‑y)Co2O5And GdzCe(1‑z)O2Wherein y is 0.7 and z is 0.9. The invention has good electrochemical performance at the medium and low temperature end.
Description
Technical Field
The invention relates to the technical field of intermediate-temperature solid oxide fuel cells, in particular to a cathode material of an intermediate-temperature solid oxide fuel cell.
Background
A solid oxide fuel cell (SOFC for short) is used as an energy direct conversion device, and can directly convert chemical energy in fuel and oxidant into electric energy at high operating temperature. The requirement of the traditional SOFC on key component materials is very strict due to the overhigh operating temperature, so that the selection of cell component materials is limited, the manufacturing cost is increased, the difficult problems of difficult packaging and the like are caused, and the development of commercial market development of the SOFC is not facilitated. Therefore, in order to meet the requirement of commercial development, the development of intermediate-temperature solid oxide fuel cells with good electrochemical performance at the intermediate-low temperature end (500-.
However, with operating temperatureThe interface resistance between the conventional cathode material and the solid electrolyte and the electrode polarization of the cathode increase, resulting in a decrease in battery performance. Therefore, the development of the cathode material with high performance at the medium-low temperature end is a key point for promoting the development of IT-SOFC and realizing the commercial development. At present, the research on the cathode material at the medium and low temperature ends is mainly focused on perovskite type oxides, mainly comprising ABO3Perovskite oxides of the type LnBaCo2O5+δ(LBCO) type double perovskite oxides, and the like.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a cathode material of an intermediate-temperature solid oxide fuel cell, which has good electrochemical performance at the intermediate-low temperature end.
The invention provides a medium-temperature solid oxide fuel cell cathode material, which comprises the following raw materials: GdBAySr(1-y)Co2O5And GdzCe(1-z)O2Wherein y is 0.7 and z is 0.9.
Preferably, GdBAySr(1-y)Co2O5And GdzCe(1-z)O2The weight ratio of (A) to (B) is 7: 3.
preferably, the electrolyte of the solid oxide fuel cell is GdzCe(1-z)O2。
Preferably, GdBAySr(1-y)Co2O5And GdzCe(1-z)O2Are all prepared by a sol-gel method.
Preferably, the specific steps of the sol-gel process are: according to GdBAySr(1-y)Co2O5Or GdzCe(1-z)O2Respectively weighing metal nitrates according to the molar ratio of each metal element, dissolving in water, adding an ammonia water solution of citric acid and EDTA, uniformly mixing, adjusting the pH value to 5.5-6.5, heating until the solution becomes a gel state, drying, adding ethanol, burning to remove organic impurities, and calcining to obtain the catalyst.
Preferably, GdBAySr(1-y)Co2O5By calciningThe sintering temperature is 920-970 ℃, and the sintering time is 1.5-2.5 h.
Preferably, GdzCe(1-z)O2The calcination temperature is 650-750 ℃, and the calcination time is 1.5-2.5 h.
Preferably, the drying temperature is 170-190 ℃, and the drying time is 7.5-8.5 h.
Preferably, the ratio of the total number of moles of metallic elements, the number of moles of citric acid and the number of moles of EDTA is 1: 1.4-1.6: 1.4-1.6.
Preferably, the concentration of EDTA in the aqueous ammonia solution of EDTA is 0.8-1.2 mol/L.
Preferably, the pH is adjusted with ammonia.
Has the advantages that:
GdBaySr(1-y)Co2O5abbreviated GBSCO, GdzCe(1-z)O2Abbreviated GDC. According to the invention, the cathode material is prepared by mixing GBSCO and GDC in a certain mass ratio, the cathode material and the electrolyte have good connection performance and physical and chemical stability, and the cathode material and the electrolyte do not react at any time under a high-temperature condition; the cathode material has good electrochemical performance, increases an electrode/electrolyte/air three-phase interface (TPB) area between an electrolyte and a cathode, reduces the polarization internal resistance of the cathode material, and increases the oxygen reduction reaction point position of the cathode, so that the oxygen transmission rate of the cathode side is accelerated, and the electrochemical reaction rate is accelerated.
Drawings
Fig. 1 is an ac impedance spectrum of the battery prepared in example 1.
Fig. 2 is a linear sweep voltammogram of the cell prepared in example 1.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
An intermediate-temperature solid oxide fuel cell cathode material comprises the following raw materials: GdBA0.7Sr0.3Co2O5And Gd0.9Ce0.1O2；GdBa0.7Sr0.3Co2O5And Gd0.9Ce0.1O2The weight ratio of (A) to (B) is 7: 3;
wherein, Gd0.9Ce0.1O2The preparation method comprises the following steps: according to Gd0.9Ce0.1O2Respectively weighing Ce (NO) according to the molar ratio of each metal element3)3·6H2O、Gd(NO3)3·6H2Dissolving in water, adding citric acid and an aqueous ammonia solution of EDTA (ethylene diamine tetraacetic acid) with the concentration of 1mol/L, uniformly mixing, adjusting the pH value to 6 with aqueous ammonia, slowly heating in a water bath until the water is basically volatilized to form a semitransparent gel state substance, transferring to a forced air drying oven, drying at 180 ℃ for 8h, adding absolute ethyl alcohol, burning and carbonizing to remove organic impurities, transferring to a muffle furnace, and calcining at 700 ℃ for 2h to obtain the product, wherein the ratio of the total mole number of metal elements, the mole number of citric acid and the mole number of EDTA is 1: 1.5: 1.5;
GdBa0.7Sr0.3Co2O5the preparation method comprises the following steps: according to GdBA0.7Sr0.3Co2O5Respectively weighing Gd (NO) according to the molar ratio of each metal element3)3·6H2O、Ba(NO3)2、Sr(NO3)2、Co(NO3)2·6H2Dissolving in water, adding citric acid and an aqueous ammonia solution of EDTA (ethylene diamine tetraacetic acid) with the concentration of 1mol/L, uniformly mixing, adjusting the pH value to 6 with aqueous ammonia, continuously carrying out hydrothermal treatment in a water bath kettle at 80 ℃ until the solution becomes a semitransparent gel state substance, transferring to a forced air drying oven, drying at 180 ℃ for 8h, adding absolute ethyl alcohol, burning to remove organic impurities, transferring to a muffle furnace, and calcining at 950 ℃ for 2h to obtain the product, wherein the ratio of the total mole number of metal elements, the mole number of citric acid and the mole number of EDTA is 1: 1.5: 1.5.
example 2
An intermediate-temperature solid oxide fuel cell cathode material comprises the following raw materials: GdBA0.7Sr0.3Co2O5And Gd0.9Ce0.1O2；GdBa0.7Sr0.3Co2O5And Gd0.9Ce0.1O2The weight ratio of (A) to (B) is 7: 3;
wherein, Gd0.9Ce0.1O2The preparation method comprises the following steps: according to Gd0.9Ce0.1O2Respectively weighing Ce (NO) according to the molar ratio of each metal element3)3·6H2O、Gd(NO3)3·6H2Dissolving the mixture in water, adding citric acid and an aqueous ammonia solution of EDTA (ethylene diamine tetraacetic acid) with the concentration of 0.8mol/L, uniformly mixing, adjusting the pH to 6.5 by using aqueous ammonia, slowly heating the mixture in a water bath until the water is basically volatilized to form a semitransparent gel state substance, transferring the substance to a blast drying oven, drying the substance at 170 ℃ for 8.5 hours, adding absolute ethyl alcohol for combustion and carbonization to remove organic impurities, transferring the substance to a muffle furnace, and calcining the substance at 650 ℃ for 2.5 hours to obtain the ethylene diamine tetraacetic acid, wherein the ratio of the total mole number of metal elements, the mole number of citric acid and the mole number of EDTA is 1: 1.4: 1.4
GdBa0.7Sr0.3Co2O5The preparation method comprises the following steps: according to GdBA0.7Sr0.3Co2O5Respectively weighing Gd (NO) according to the molar ratio of each metal element3)3·6H2O、Ba(NO3)2、Sr(NO3)2、Co(NO3)2·6H2Dissolving in water, adding citric acid and an aqueous ammonia solution of EDTA (ethylene diamine tetraacetic acid) with the concentration of 1.2mol/L, uniformly mixing, adjusting the pH value to 5.5 with aqueous ammonia, continuously carrying out hydrothermal treatment in a water bath kettle at 80 ℃ until the solution becomes a semitransparent gel state substance, transferring to a blast drying oven, drying at 190 ℃ for 7.5h, adding absolute ethyl alcohol, burning to remove organic impurities, transferring to a muffle furnace, and calcining at 970 ℃ for 1.5h to obtain the Ethylene Diamine Tetraacetic Acid (EDTA), wherein the ratio of the total mole number of metal elements, the mole number of citric acid and the mole number of EDTA is 1: 1.4: 1.4.
example 3
An intermediate-temperature solid oxide fuel cell cathode material comprises the following raw materials: GdBA0.7Sr0.3Co2O5And Gd0.9Ce0.1O2；GdBa0.7Sr0.3Co2O5And Gd0.9Ce0.1O2Weight of (2)The ratio is 7: 3;
wherein, Gd0.9Ce0.1O2The preparation method comprises the following steps: according to Gd0.9Ce0.1O2Respectively weighing Ce (NO) according to the molar ratio of each metal element3)3·6H2O、Gd(NO3)3·6H2Dissolving the mixture in water, adding citric acid and an aqueous ammonia solution of EDTA (ethylene diamine tetraacetic acid) with the concentration of 1.2mol/L, uniformly mixing, adjusting the pH value to 5.5 by using aqueous ammonia, slowly heating the mixture in a water bath until the water is basically volatilized to form a semitransparent gel state substance, transferring the substance to a blast drying oven, drying the substance at 190 ℃ for 7.5h, adding absolute ethyl alcohol for combustion and carbonization to remove organic impurities, transferring the substance to a muffle furnace, and calcining the substance at 750 ℃ for 1.5h to obtain the ethylene diamine tetraacetic acid, wherein the ratio of the total mole number of metal elements, the mole number of citric acid and the mole number of EDTA is 1: 1.6: 1.6;
GdBa0.7Sr0.3Co2O5the preparation method comprises the following steps: according to GdBA0.7Sr0.3Co2O5Respectively weighing Gd (NO) according to the molar ratio of each metal element3)3·6H2O、Ba(NO3)2、Sr(NO3)2、Co(NO3)2·6H2Dissolving in water, adding citric acid and an aqueous ammonia solution of EDTA (ethylene diamine tetraacetic acid) with the concentration of 0.8mol/L, uniformly mixing, adjusting the pH to 6.5 with aqueous ammonia, continuously carrying out hydrothermal treatment in a water bath kettle at 80 ℃ until the solution becomes a semitransparent gel substance, transferring to a blast drying oven, drying for 8.5h at 170 ℃, adding absolute ethyl alcohol for combustion to remove organic impurities, transferring to a muffle furnace, and calcining for 2.5h at 920 ℃, wherein the ratio of the total mole number of metal elements, the mole number of citric acid and the mole number of EDTA is 1: 1.6: 1.6.
test examples
And preparing a half cell with a cathode/electrolyte structure in an electrolyte supporting mode, wherein the structure of the half cell is cathode (working electrode)/electrolyte/silver paste (counter electrode), and performing related electrochemical performance test on the half cell by adopting a three-electrode method.
The test half cell preparation procedure was as follows:
GDC electrolyte sheet: example 1 preparationGd of (2)0.9Ce0.1O2Fully grinding, taking 0.25g of pressed tablets, and calcining at 1400 ℃ for 4h to obtain a GDC electrolyte tablet;
GBSCO-GDC/GDC half-cell preparation: uniformly mixing the embodiment 1 with a binder to prepare cathode slurry; uniformly coating cathode slurry on the central area of one side of an electrolyte sheet to serve as a cathode area, and calcining at 900 ℃ for 1 h; in order to ensure the charge collection efficiency, a silver core is arranged on the calcined cathode region point to be used as a charge collector, and a section of silver wire is led out to be used as a Working Electrode (WE); uniformly coating silver paste on the other side of the electrolyte sheet to serve as a Counter Electrode (CE), and leading out silver wires; finally, a Reference Electrode (RE) is spotted on one side of the cathode region by using silver paste, and silver wires are led out.
And (3) electrical property detection:
1) and (3) alternating current impedance spectrum testing: the half cell was subjected to AC impedance test at 650 deg.C, 700 deg.C, and 750 deg.C in air atmosphere at 1-105Hz, and the test results are shown in FIG. 1, where FIG. 1 is an AC impedance spectrum of the cell prepared in example 1, and FIG. 1 shows that at 750 deg.C, the ohmic internal resistance is 1.18. omega. cm2Total internal resistance of 1.43 omega cm2The internal resistance of the interface is 0.25 omega cm2；
2) Linear scan test: the current density change was recorded by applying a linearly varying voltage to both ends of the electrode at 650 deg.C, 700 deg.C, and 750 deg.C, respectively, in an air atmosphere, and the test results are shown in FIG. 2, FIG. 2 is a linear sweep voltammogram of the battery prepared in example 1, and it can be seen from FIG. 2 that the maximum current density reached 0.84A/cm at 750 deg.C2。
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 person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The cathode material of the intermediate-temperature solid oxide fuel cell is characterized by comprising the following raw materials: gd (Gd)BaySr(1-y)Co2O5And GdzCe(1-z)O2Wherein y is 0.7 and z is 0.9.
2. An intermediate-temperature solid oxide fuel cell cathode material according to claim 1, wherein GdBAySr(1-y)Co2O5And GdzCe(1-z)O2The weight ratio of (A) to (B) is 7: 3.
3. an intermediate-temperature solid oxide fuel cell cathode material according to claim 1 or 2, wherein the electrolyte of the solid oxide fuel cell is GdzCe(1-z)O2。
4. An intermediate-temperature solid oxide fuel cell cathode material according to any one of claims 1 to 3, wherein GdBAySr(1-y)Co2O5And GdzCe(1-z)O2Are all prepared by a sol-gel method.
5. An intermediate-temperature solid oxide fuel cell cathode material according to claim 4, characterized in that the sol-gel method comprises the following specific steps: according to GdBAySr(1-y)Co2O5Or GdzCe(1-z)O2Respectively weighing metal nitrates according to the molar ratio of each metal element, dissolving in water, adding an ammonia water solution of citric acid and EDTA, uniformly mixing, adjusting the pH value to 5.5-6.5, heating until the solution becomes a gel state, drying, adding ethanol, burning to remove organic impurities, and calcining to obtain the catalyst.
6. An intermediate-temperature solid oxide fuel cell cathode material according to claim 5, wherein GdBAySr(1-y)Co2O5The calcination temperature is 920-970 ℃, and the calcination time is 1.5-2.5 h; preferably, GdzCe(1-z)O2The calcination temperature is 650-750 ℃, and the calcination time is 1.5-2.5h。
7. An intermediate-temperature solid oxide fuel cell cathode material according to claim 5 or 6, characterized in that the drying temperature is 170-190 ℃ and the drying time is 7.5-8.5 h.
8. An intermediate-temperature solid oxide fuel cell cathode material according to any one of claims 5-7, wherein the ratio of the total moles of metal elements, the moles of citric acid and the moles of EDTA is 1: 1.4-1.6: 1.4-1.6.
9. An intermediate-temperature solid oxide fuel cell cathode material according to any one of claims 5-8, wherein the concentration of EDTA in the aqueous ammonia solution of EDTA is 0.8-1.2 mol/L.
10. An intermediate-temperature solid oxide fuel cell cathode material according to any one of claims 5 to 9, characterized in that the pH is adjusted with ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033146.1A CN111211332A (en) | 2020-01-13 | 2020-01-13 | Medium-temperature solid oxide fuel cell cathode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033146.1A CN111211332A (en) | 2020-01-13 | 2020-01-13 | Medium-temperature solid oxide fuel cell cathode material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111211332A true CN111211332A (en) | 2020-05-29 |
Family
ID=70789060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010033146.1A Pending CN111211332A (en) | 2020-01-13 | 2020-01-13 | Medium-temperature solid oxide fuel cell cathode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111211332A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013143242A (en) * | 2012-01-10 | 2013-07-22 | Noritake Co Ltd | Solid oxide fuel cell, and material for forming cathode for the fuel cell |
| CN104409742A (en) * | 2014-11-06 | 2015-03-11 | 哈尔滨工业大学 | BaCoO3-delta base B-position Bi2O3-Nb2O5 co-doped cathode material of solid oxide fuel cell, preparation method and applications thereof |
-
2020
- 2020-01-13 CN CN202010033146.1A patent/CN111211332A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013143242A (en) * | 2012-01-10 | 2013-07-22 | Noritake Co Ltd | Solid oxide fuel cell, and material for forming cathode for the fuel cell |
| CN104409742A (en) * | 2014-11-06 | 2015-03-11 | 哈尔滨工业大学 | BaCoO3-delta base B-position Bi2O3-Nb2O5 co-doped cathode material of solid oxide fuel cell, preparation method and applications thereof |
Non-Patent Citations (3)
| Title |
|---|
| CRISTINA ARTINI: "High Temperature Structural Study of Gd-Doped Ceriaby Synchrotron X‑ray Diffraction(673K ≤ T ≤ 1073K)", 《INORGANIC CHEMISTRY》 * |
| MARCO SCAVINI: "Probing Complex Disorder in Ce1-xGdxO2-x/2 Using the Pair Distribution Function Analysis", 《CHEMISTRY OF MATERIALS》 * |
| 杨鹏: "钙钛矿基氧化物材料的制备及电化学性能研究", 《中国优秀博硕士学位论文数据库（硕士）工程科技Ⅰ辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109742414A (en) | A kind of intermediate temperature solid oxide fuel cell cathode material and the preparation method and application thereof | |
| CN104409742A (en) | BaCoO3-delta base B-position Bi2O3-Nb2O5 co-doped cathode material of solid oxide fuel cell, preparation method and applications thereof | |
| CN114824303B (en) | R-P type layered medium-entropy perovskite structure cathode material and preparation method thereof | |
| CN108390087B (en) | Composite solid electrolyte and preparation method thereof | |
| CN112408490B (en) | Hydrothermal synthesis of Ba doped Sr2Fe1.5Mo0.5O6Method for preparing double perovskite nano material | |
| CN102842723A (en) | Intermediate temperature solid oxide fuel cell cathode material with perovskite structure and preparation method thereof | |
| JP3617814B2 (en) | Air electrode material for alkaline-earth-added nickel-iron perovskite-type low-temperature solid fuel cell | |
| CN111584882B (en) | Solid oxide fuel cell with novel structure and preparation method thereof | |
| CN109818021A (en) | It is a kind of based on cerium oxide/ferriferrous oxide composite material low-temperature solid oxide fuel cell | |
| JP5226656B2 (en) | Solid oxide fuel cell and method for producing solid oxide fuel cell | |
| CN116666670B (en) | Lanthanum-niobium co-doped intermediate-temperature SOFC cathode material and preparation method and application thereof | |
| CN111326751B (en) | Aluminum-air battery and preparation method thereof | |
| CN103427092B (en) | Clad structure composite conductive ceramic material and cathode contact layer and preparation method thereof | |
| CN101222060A (en) | Medium-low temperature solid-oxide fuel battery cathode material | |
| JP3414657B2 (en) | Air electrode materials for nickel-iron based perovskite solid fuel cells | |
| JP2810104B2 (en) | Ceramic electrode and fuel cell having the same | |
| CN111403752A (en) | Low-temperature solid oxide fuel cell composite cathode material and preparation method of single fuel cell thereof | |
| CN110993997A (en) | Method for improving operation stability of reversible solid oxide battery | |
| CN115241471A (en) | Solid oxide fuel cell cathode material and preparation method and application thereof | |
| CN111211332A (en) | Medium-temperature solid oxide fuel cell cathode material | |
| CN108598540A (en) | Solid oxide fuel cell and preparation method thereof | |
| CN108054394A (en) | The synthetic method of solid oxide fuel cell strontium titanate base material | |
| CN113451594A (en) | Cathode material of solid oxide fuel cell and preparation method thereof | |
| CN101267038A (en) | Cathode material for middle and low-temperature solid oxide fuel battery | |
| CN110556542A (en) | Cathode material of solid oxide fuel cell and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200529 |