CN1986117A - Blended nano cerium oxide powder and its preparing process - Google Patents
Blended nano cerium oxide powder and its preparing process Download PDFInfo
- Publication number
- CN1986117A CN1986117A CNA2006101697738A CN200610169773A CN1986117A CN 1986117 A CN1986117 A CN 1986117A CN A2006101697738 A CNA2006101697738 A CN A2006101697738A CN 200610169773 A CN200610169773 A CN 200610169773A CN 1986117 A CN1986117 A CN 1986117A
- Authority
- CN
- China
- Prior art keywords
- cerium oxide
- powder
- oxide powder
- gadolinium
- nano cerium
- 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.)
- Granted
Links
Classifications
-
- 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
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention discloses doped nanometer cerium oxide powder and its preparation process. The doped nanometer cerium oxide powder is composite oxide of cerium oxide, gadolinium oxide and yttria in the stoichiometric ratio as shown in Ce1-xGdx-yYyO2-0.5x, where, x is 0.1-0.2 and 0<y<x, and has crystal size of 8-100 nm. It is prepared through the following steps: 1. dissolving cerium nitrate, gadolinium nitrate and yttrium nitrate in the required molar ratio into water to compound mixed metal ion solution, and adding citric acid; 2. heating the obtained solution at 80-100 deg.c to obtain dry gel; 3. self-extension burning the dry gel to obtain powder; and 4. heat treatment of the powder at 500-1000 deg.c in the air for 1-2 hr. The doped nanometer cerium oxide powder may be used as electrolyte material in the medium temperature solid oxide fuel cell.
Description
Technical field
The present invention relates to a kind of blended nano cerium oxide powder and preparation method thereof.
Background technology
Doped cerium oxide (DCO) is a kind of oxygen ion conductor, because it has than stabilisation ZrO under middle temperature (600 ℃～800 ℃)
2Higher ionic conductivity is than doping LaGaO
3Advantages such as lower price, raw material are easy to get are considered to one of first-selected electrolyte of intermediate temperature solid oxide fuel cell.The powder of high-quality is preparation CeO
2The basis of base pottery.Usually require powder to form evenly, ultra-fine, narrow diameter distribution does not have and reunites or few the reunion, so that reduce the sintering temperature of pottery as far as possible, improves the performance of pottery.The method for preparing doped cerium oxide has a lot, as solid reaction process, chemical coprecipitation, hydro-thermal method and sol-gel process etc.The solid reaction process technology of preparing is simple, and cost is low, but the chemical uniformity of the powder of solid phase method preparation is relatively poor, and is difficult for obtaining single crystalline phase; Chemical coprecipitation technology is simple, and is easy to operate, and cost is low, and the doped cerium oxide particle that makes is even, easily regulates, and is easy to suitability for industrialized production, and shortcoming is the washing difficulty of the precipitation method; Hydro-thermal method equipment and instrument costliness, and operation with high pressure is difficult for suitability for industrialized production; Sol-gel technique has the raw molecule level to be mixed, and product is formed and substitutional ion is controlled easily, characteristics such as narrow particle size distribution, but synthetic powder needs higher temperature, and powder may be reunited.
Summary of the invention
The purpose of this invention is to provide a kind of blended nano cerium oxide powder and preparation method thereof.
Blended nano cerium oxide powder provided by the present invention is to meet Ce
1-xGd
X-yY
yO
2-0.5xThe composite oxides of the cerium oxide of stoichiometric proportion, gadolinium oxide and yittrium oxide, its size of microcrystal are 8-100nm; Wherein, 0.1≤x≤0.2,0＜y＜x.
This blended nano cerium oxide powder can prepare according to the method that comprises the steps:
(1) cerous nitrate, gadolinium nitrate and the yttrium nitrate mol ratio according to 1-x: x-y: y is dissolved in the water, is made into metallic ion mixed liquor, wherein, 0.1≤x≤0.2,0＜y＜x; Add citric acid then in described metallic ion mixed liquor, the total mol ratio that makes citric acid and metal ion cerium, gadolinium and ruthenium ion is 1: 1-2;
(2) moisture is removed in the solution evaporation that step (1) is obtained, and obtains xerogel;
(3) the xerogel self-propagating combustion that step (2) is obtained obtains powder;
(4), obtain gadolinium, the yttrium composite doped cerium oxide powder of different size of microcrystal, different specific areas with powder heat treatment in 500-1000 ℃ of air of step (3) acquisition.
The water that is used to dissolve cerous nitrate, gadolinium nitrate and yttrium nitrate in the above-mentioned steps (1) is preferably deionized water.
Evaporation in the described step (2) can be carried out at normal temperatures, and in order to accelerate evaporation rate, described evaporating temperature can be 80-100 ℃, is preferably 90 ℃.
Heat treatment time in the step (4) can be 1-2h.
The existing method of the xerogel self-propagating combustion of step (2) acquisition all can be selected for use, be heated to 200 ℃ in the calcining furnace as xerogel is gone into, xerogel generation self-propagating combustion obtains powder.
The size of microcrystal of the gadolinium of method for preparing, yttrium composite doped cerium oxide powder is 8-100nm.
The present invention utilizes the process characteristic of collosol and gel-firing method, by optimizing technological parameter, adjusts the ratio of citric acid and metal ion, it is fully burnt directly obtain gadolinium, yttrium composite doped cerium oxide nanometer powder.The method for preparing blended nano cerium oxide powder of the present invention, based on the oxidation-reduction reaction principle, wherein nitrate ion is as oxidant, and citric acid is as complexing agent and fuel.Citric acid and cerium, gadolinium, yttrium plasma effect form complex compound, so reactant mixes with atomic level, have effectively shortened diffusion length, have significantly reduced reaction temperature, help reaction and carry out fast.Course of reaction is easy, need not high-tension apparatus, and the subsequent heat treatment temperature is no more than 1000 ℃, and heat treatment time is less than 2h.The product purity height, controllable granularity, narrow particle size distribution.By the addition of control citric acid, regulate the subsequent heat treatment temperature and time, can control the size of microcrystal (8-100nm) and the specific area (10-65m of gadolinium, yttrium composite doped cerium oxide
2/ g).Technical process is simple, and preparation parameter is easy to control, good reproducibility, and can scale synthetic, device therefor be simple, and reactant is in the height homogeneously dispersed state, and the compound formation temperature is low in the building-up process, makes that the product particle diameter is little, and it is more even to distribute.
Gadolinium of the present invention, yttrium composite doped cerium oxide powder can be used for the electrolyte of intermediate temperature solid oxide fuel cell.
The specific embodiment
Main implementation process of the present invention is:
(1) be initiation material with cerous nitrate, gadolinium nitrate and yttrium nitrate, cerous nitrate, gadolinium nitrate and yttrium nitrate are dissolved in the water, and being made into the mol ratio that meets cerium, gadolinium and ruthenium ion is the metallic ion mixed liquor of 1-x: x-y: y, wherein, 0.1≤x≤0.2,0＜y＜x.Fully add citric acid complexing agent behind the mixing, total mol ratio of this citric acid and metal ion cerium, gadolinium and yttrium is 1: 1-2, solution mix the back and form complex compound, and citric acid is as complexing agent, and double as fuel is used;
(2) solution is placed on heating evaporation in the water-bath, 80-100 ℃ of control temperature formed transparent colloidal sol in continuous stirring 5-8 hour, then this colloidal sol further heated, and formed xerogel;
(3) be heated to 200 ℃, xerogel powder generation self-propagating combustion, the powder that obtains synthesizing with putting into calcining furnace after the xerogel grinding that obtains.
(4), obtain gadolinium, the yttrium composite doped cerium oxide powder of different-grain diameter, different specific areas with above-mentioned (1), (2), the resulting powder of (3) step heat treatment 1-2h in 500-1000 ℃ of air.
Further illustrate characteristics of the present invention by the following examples, but be not limited to embodiment.
Experimental technique among the following embodiment if no special instructions, is conventional method.
Embodiment 1, preparation meet Ce
0.8Gd
0.05Y
0.15O
1.9Gadolinium, the yttrium composite doped cerium oxide powder of stoichiometric proportion
It by the mol ratio of cerium, gadolinium and ruthenium ion 0.8: 0.05: 0.15 stoichiometric proportion, take by weighing cerous nitrate, gadolinium nitrate and yttrium nitrate, be dissolved in the deionized water, constantly stir and make it add citric acid after fully dissolving, total mol ratio of this citric acid and metal ion cerium, gadolinium and yttrium is 1: 1.2.Solution is placed on heating evaporation in the water-bath, 90 ℃ of control temperature, continuous stirring formed transparent colloidal sol in 6 hours, then this colloidal sol was further heated, and formed xerogel.Be heated to 200 ℃ with putting into calcining furnace after the xerogel grinding that obtains, xerogel powder generation self-propagating combustion, the powder that obtains synthesizing is warming up to the powder that obtains 500 ℃ of insulation 2h again, obtains powder.Through the plasma emission spectrometer assay determination, the mol ratio of cerium, gadolinium and yttrium is 0.8: 0.05: 0.15 in this powder, and promptly this powder is Ce
0.8Gd
0.05Y
0.15O
1.9Nanometer powder.Observe powder under the JEM2010 transmission electron microscope, its maximum size of microcrystal is 11nm, and minimum size of microcrystal is 8nm, and the average crystal grain grain size is 9nm, reaches nanometer scale.After measured, the average specific surface area of powder is 65.4m
2/ g.With Ce
0.8Gd
0.05Y
0.15O
1.9The nanometer powder dry-pressing becomes diameter 12mm, and the disk of thickness 1mm, sintering in program control intensification cabinet-type electric furnace, sintering condition are 1250 ℃ of insulation 4h, and warming and cooling rate is 4 ℃/min.Disk behind the sintering is measured through the ac resistance analysis of CHI660B electrochemical workstation (Shanghai occasion China instrument company), and its ionic conductivity in 500 ℃, 600 ℃ and 700 ℃ of air atmospheres is respectively 0.011,0.034,0.074S/cm.
Embodiment 2, preparation meet Ce
0.8Gd
0.1Y
0.1O
1.9Gadolinium, the yttrium composite doped cerium oxide powder of stoichiometric proportion
It by the mol ratio of cerium, gadolinium and ruthenium ion 0.8: 0.1: 0.1 stoichiometric proportion, take by weighing cerous nitrate, gadolinium nitrate and yttrium nitrate, be dissolved in the deionized water, constantly stir and make it add citric acid complexing agent after fully dissolving, total mol ratio of this citric acid and metal ion cerium, gadolinium and yttrium is 1: 1.5.Solution is placed on heating evaporation in the water-bath, 80 ℃ of control temperature, continuous stirring formed transparent colloidal sol in 8 hours, then this colloidal sol was further heated, and formed xerogel.To obtain to put into calcining furnace after xerogel grinds and be heated to 200 ℃, xerogel powder generation self-propagating combustion, the powder that obtains synthesizing is warming up to the powder that obtains 600 ℃ of insulation 2h again, obtains powder.Through the plasma emission spectrometer assay determination, the mol ratio of cerium, gadolinium and yttrium is 0.8: 0.1: 0.1 in this powder, and promptly this powder is Ce
0.8Gd
0.1Y
0.1O
1.9Nanometer powder.Observe powder under the JEM2010 transmission electron microscope, its maximum size of microcrystal is 23nm, and minimum size of microcrystal is 18nm, and the average crystal grain grain size is 20nm, reaches nanometer scale.After measured, the average specific surface area of powder is 45.3m
2/ g.With Ce
0.8Gd
0.1Y
0.1O
1.9The nanometer powder dry-pressing becomes diameter 12mm, and the disk of thickness 1mm, sintering in program control intensification cabinet-type electric furnace, sintering condition are 1250 ℃ of insulation 4h, and warming and cooling rate is 4 ℃/min.Disk behind the sintering is measured through the ac resistance analysis of CHI660B electrochemical workstation (Shanghai occasion China instrument company), and its ionic conductivity in 500 ℃, 600 ℃ and 700 ℃ of air atmospheres is respectively 0.0062,0.025,0.063S/cm.
Embodiment 3, preparation meet Ce
0.8Gd
0.15Y
0.05O
1.9Gadolinium, the yttrium composite doped cerium oxide powder of stoichiometric proportion
It by the mol ratio of cerium, gadolinium and ruthenium ion 0.8: 0.15: 0.05 stoichiometric proportion, take by weighing cerous nitrate, gadolinium nitrate and yttrium nitrate, be dissolved in the deionized water, constantly stir and make it add citric acid complexing agent after fully dissolving, total mol ratio of this citric acid and metal ion cerium, gadolinium and yttrium is 1: 1.5.Solution is placed on heating evaporation in the water-bath, 100 ℃ of control temperature, continuous stirring formed transparent colloidal sol in 5 hours, then this colloidal sol was further heated, and formed xerogel.To obtain to put into calcining furnace after xerogel grinds and be heated to 200 ℃, xerogel powder generation self-propagating combustion, the powder that obtains synthesizing is warming up to the powder that obtains 900 ℃ of insulation 2h again, obtains powder.Through the plasma emission spectrometer assay determination, the mol ratio of cerium, gadolinium and yttrium is 0.8: 0.15: 0.05 in this powder, and promptly this powder is Ce
0.8Gd
0.15Y
0.05O
1.9Nanometer powder.Observe powder under the JEM2010 transmission electron microscope, its maximum size of microcrystal is 37nm, and minimum size of microcrystal is 32nm, and the average crystal grain grain size is 35nm, reaches nanometer scale.Through measuring, the average specific surface area of powder is 22m
2/ g.With Ce
0.8Gd
0.15Y
0.5O
1.9The nanometer powder dry-pressing becomes diameter 12mm, and the disk of thickness 1mm, sintering in program control intensification cabinet-type electric furnace, sintering condition are 1250 ℃ of insulation 4h, and warming and cooling rate is 4 ℃/min.Disk behind the sintering is measured through the ac resistance analysis of CHI660B electrochemical workstation (Shanghai occasion China instrument company), and its ionic conductivity in 500 ℃, 600 ℃ and 700 ℃ of air atmospheres is respectively 0.0056,0.019,0.065S/cm.
Embodiment 4, preparation meet Ce
0.9Gd
0.05Y
0.5O
1.95Gadolinium, the yttrium composite doped cerium oxide powder of stoichiometric proportion
It by the mol ratio of cerium, gadolinium and ruthenium ion 0.9: 0.05: 0.05 stoichiometric proportion, take by weighing cerous nitrate, gadolinium nitrate and yttrium nitrate, be dissolved in the deionized water, constantly stir and make it add citric acid complexing agent after fully dissolving, total mol ratio of this citric acid and metal ion cerium, gadolinium and yttrium is 1: 1.8.Solution is placed on heating evaporation in the water-bath, 100 ℃ of control temperature, continuous stirring formed transparent colloidal sol in 6 hours, then this colloidal sol was further heated, and formed xerogel.To obtain to put into calcining furnace after xerogel grinds and be heated to 200 ℃, xerogel powder generation self-propagating combustion, the powder that obtains synthesizing is warming up to the powder that obtains 600 ℃ of insulation 2h again, obtains powder.Through the plasma emission spectrometer assay determination, the mol ratio of cerium, gadolinium and yttrium is 0.9: 0.05: 0.05 in this powder, and promptly this powder is Ce
0.9Gd
0.05Y
0.05O
1.95Nanometer powder.Observe powder under the JEM2010 transmission electron microscope, its maximum size of microcrystal is 25nm, and minimum size of microcrystal is 20nm, and the average crystal grain grain size is 22nm, reaches nanometer scale.Through measuring, the average specific surface area of powder is 33m
2/ g.With Ce
0.9Gd
0.05Y
0.05O
1.95The nanometer powder dry-pressing becomes diameter 12mm, and the disk of thickness 1mm, sintering in program control intensification cabinet-type electric furnace, sintering condition are 1250 ℃ of insulation 4h, and warming and cooling rate is 4 ℃/min.Disk behind the sintering is measured through the ac resistance analysis of CHI660B electrochemical workstation (Shanghai occasion China instrument company), and its ionic conductivity in 500 ℃, 600 ℃ and 700 ℃ of air atmospheres is respectively 0.012,0.032,0.053S/cm.
Embodiment 5, preparation meet Ce
0.85Gd
0.08Y
0.07O
1.925Gadolinium, the yttrium composite doped cerium oxide powder of stoichiometric proportion
It by the mol ratio of cerium, gadolinium and ruthenium ion 0.85: 0.08: 0.07 stoichiometric proportion, take by weighing cerous nitrate, gadolinium nitrate and yttrium nitrate, be dissolved in the deionized water, constantly stir and make it add citric acid complexing agent after fully dissolving, total mol ratio of this citric acid and metal ion cerium, gadolinium and yttrium is 1: 2.Solution is placed on heating evaporation in the water-bath, 90 ℃ of control temperature, continuous stirring formed transparent colloidal sol in 7 hours, then this colloidal sol was further heated, and formed xerogel.To obtain to put into calcining furnace after xerogel grinds and be heated to 200 ℃, xerogel powder generation self-propagating combustion, the powder that obtains synthesizing is warming up to the powder that obtains 500 ℃ of insulation 2h again, obtains powder.Through the plasma emission spectrometer assay determination, the mol ratio of cerium, gadolinium and yttrium is 0.85: 0.08: 0.07 in this powder, and promptly this powder is Ce
0.85Gd
0.08Y
0.07O
1.925Nanometer powder.Observe powder under the JEM2010 transmission electron microscope, its maximum size of microcrystal is 12nm, and minimum size of microcrystal is 8nm, and the average crystal grain grain size is 10nm, reaches nanometer scale.Through measuring, the average specific surface area of powder is 60m
2/ g.With Ce
0.85Gd
0.08Y
0.07O
1.925The nanometer powder dry-pressing becomes diameter 12mm, and the disk of thickness 1mm, sintering in program control intensification cabinet-type electric furnace, sintering condition are 1250 ℃ of insulation 4h, and warming and cooling rate is 4 ℃/min.Disk behind the sintering is measured through the ac resistance analysis of CHI660B electrochemical workstation (Shanghai occasion China instrument company), and its ionic conductivity in 500 ℃, 600 ℃ and 700 ℃ of air atmospheres is respectively 0.0125,0.036,0.069S/cm.
Claims (10)
1, a kind of blended nano cerium oxide powder is to meet Ce
1-xGd
X-yY
yO
2-0.5xThe composite oxides of the cerium oxide of stoichiometric proportion, gadolinium oxide and yittrium oxide, its size of microcrystal are 8-100nm; Wherein, 0.1≤x≤0.2,0＜y＜x.
2, nanometer powder according to claim 1 is characterized in that: the specific area of described blended nano cerium oxide powder is 10-65m
2/ g.
3, nanometer powder according to claim 1 and 2 is characterized in that: described blended nano cerium oxide powder meets Ce
0.8Gd
0.05Y
0.15O
1.9Stoichiometric proportion; The average crystal grain particle diameter of described blended nano cerium oxide powder is 9nm, and average specific surface area is 65.4m
2/ g.
4, nanometer powder according to claim 1 and 2 is characterized in that: described blended nano cerium oxide powder meets Ce
0.8Gd
0.1Y
0.1O
1.9Stoichiometric proportion; The average crystal grain particle diameter of described blended nano cerium oxide powder is 20nm, and average specific surface area is 45.3m
2/ g.
5, nanometer powder according to claim 1 and 2 is characterized in that: described blended nano cerium oxide powder meets Ce
0.8Gd
0.15Y
0.05O
1.9Stoichiometric proportion; The average crystal grain particle diameter of described blended nano cerium oxide powder is 35nm, and average specific surface area is 22m
2/ g.
6, nanometer powder according to claim 1 and 2 is characterized in that: described blended nano cerium oxide powder meets Ce
0.9Gd
0.05Y
0.05O
1.9Stoichiometric proportion; The average crystal grain particle diameter of described blended nano cerium oxide powder is 22nm, and average specific surface area is 33m
2/ g.
7, nanometer powder according to claim 1 and 2 is characterized in that: described blended nano cerium oxide powder meets Ce
0.85Gd
0.08Y
0.07O
1.925Stoichiometric proportion; The average crystal grain particle diameter of described blended nano cerium oxide powder is 10nm, and average specific surface area is 60m
2/ g.
8, a kind of method for preparing the described blended nano cerium oxide powder of arbitrary claim in the claim 1 to 7 comprises the steps:
(1) cerous nitrate, gadolinium nitrate and the yttrium nitrate mol ratio according to 1-x: x-y: y is dissolved in the water, is made into metallic ion mixed liquor, wherein, 0.1≤x≤0.2,0＜y＜x; Add citric acid then in described metallic ion mixed liquor, the total mol ratio that makes citric acid and metal ion cerium, gadolinium and ruthenium ion is 1: 1-2;
(2) moisture is removed in the solution evaporation that step (1) is obtained, and obtains xerogel;
(3) the xerogel self-propagating combustion that step (2) is obtained obtains powder;
(4) powder that step (3) is obtained is heat-treated in 500-1000 ℃ of air, obtains gadolinium, the yttrium composite doped cerium oxide powder of different-grain diameter, different specific areas.
9, method according to claim 8 is characterized in that: the water that is used to dissolve cerous nitrate, gadolinium nitrate and yttrium nitrate in the described above-mentioned steps (1) is deionized water; Heat treatment time in the step (4) is 1-2h.
10, method according to claim 9 is characterized in that: the evaporating temperature in the described step (2) is 80-100 ℃, is preferably 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101697738A CN100464901C (en) | 2006-12-28 | 2006-12-28 | Blended nano cerium oxide powder and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101697738A CN100464901C (en) | 2006-12-28 | 2006-12-28 | Blended nano cerium oxide powder and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986117A true CN1986117A (en) | 2007-06-27 |
| CN100464901C CN100464901C (en) | 2009-03-04 |
Family
ID=38183137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101697738A Expired - Fee Related CN100464901C (en) | 2006-12-28 | 2006-12-28 | Blended nano cerium oxide powder and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100464901C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693520B (en) * | 2009-10-21 | 2012-07-25 | 济南大学 | Industrialized process for preparing cerium oxide nano-rods doped with rare earth elements |
| CN102942205A (en) * | 2012-11-20 | 2013-02-27 | 陕西科技大学 | Morphology controllable nanometer CeO2 preparation method |
| CN103951392A (en) * | 2014-04-15 | 2014-07-30 | 山东大学 | Method of synthesizing MgO/Y2O3 nano powder by microwave combustion |
| CN104263369A (en) * | 2014-09-23 | 2015-01-07 | 南京信息工程大学 | Preparation method of europium doped yttrium/gadolinium-oxide nano polycrystalline luminescent powder |
| CN113302771A (en) * | 2018-11-17 | 2021-08-24 | 环球公用事业公司 | Method for producing an electrochemical reactor |
| CN113929498A (en) * | 2021-09-16 | 2022-01-14 | 山东工业陶瓷研究设计院有限公司 | Coating for preparing barrier layer, preparation method of barrier layer and barrier layer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089930A (en) * | 1993-01-12 | 1994-07-27 | 中国科学院金属研究所 | A kind of preparation method of nanometer-level oxide ceramic powder |
| US8435694B2 (en) * | 2004-01-12 | 2013-05-07 | Fuelcell Energy, Inc. | Molten carbonate fuel cell cathode with mixed oxide coating |
| DE102005003612B3 (en) * | 2005-01-26 | 2006-06-14 | Forschungszentrum Jülich GmbH | Producing a gastight proton conductor, e.g. useful in fuel cells, comprises coating a substrate with an oxygen ion conductor, applying a carbonate layer, and drying and sintering the product |
| CN1285511C (en) * | 2005-04-29 | 2006-11-22 | 中国科学院上海光学精密机械研究所 | Method for synthesizing Y2O3 nano material directly from combustion method of citric acid |
| JP5095089B2 (en) * | 2005-05-31 | 2012-12-12 | 株式会社豊田中央研究所 | Solid polymer electrolyte, solid polymer fuel cell, and manufacturing method thereof |
-
2006
- 2006-12-28 CN CNB2006101697738A patent/CN100464901C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693520B (en) * | 2009-10-21 | 2012-07-25 | 济南大学 | Industrialized process for preparing cerium oxide nano-rods doped with rare earth elements |
| CN102942205A (en) * | 2012-11-20 | 2013-02-27 | 陕西科技大学 | Morphology controllable nanometer CeO2 preparation method |
| CN103951392A (en) * | 2014-04-15 | 2014-07-30 | 山东大学 | Method of synthesizing MgO/Y2O3 nano powder by microwave combustion |
| CN104263369A (en) * | 2014-09-23 | 2015-01-07 | 南京信息工程大学 | Preparation method of europium doped yttrium/gadolinium-oxide nano polycrystalline luminescent powder |
| CN113302771A (en) * | 2018-11-17 | 2021-08-24 | 环球公用事业公司 | Method for producing an electrochemical reactor |
| CN113929498A (en) * | 2021-09-16 | 2022-01-14 | 山东工业陶瓷研究设计院有限公司 | Coating for preparing barrier layer, preparation method of barrier layer and barrier layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100464901C (en) | 2009-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tarancón et al. | Synthesis of nanocrystalline materials for SOFC applications by acrylamide polymerisation | |
| CN100464901C (en) | Blended nano cerium oxide powder and its preparing process | |
| Chung et al. | Microwave-induced combustion synthesis of Ce1− xSmxO2− x/2 powder and its characterization | |
| CN101475377B (en) | Preparation of solid oxide electrolytic cell anode barrier layer nano powder and barrier layer | |
| Zhang et al. | Preparation and properties of dense Ce0. 9Gd0. 1O2− δ ceramics for use as electrolytes in IT-SOFCs | |
| Khan et al. | Wet chemical synthesis and characterisation of Ba0. 5Sr0. 5Ce0. 6Zr0. 2Gd0. 1Y0. 1O3− δ proton conductor | |
| Acharya | The effect of processing route on sinterability and electrical properties of nano-sized dysprosium-doped ceria | |
| Polat et al. | Thermo-electrical and structural properties of Gd2O3 and Lu2O3 double-doped Bi2O3 | |
| US7968609B2 (en) | Mixtures of nanoparticles | |
| Arabacı | Effect of Er, Gd, and Nd co-dopants on the properties of Sm-doped ceria electrolyte for IT-SOFC | |
| Cheng et al. | Formation of Ce0. 8Sm0. 2O1. 9 nanoparticles by urea-based low-temperature hydrothermal process | |
| Arabacı | Citrate/nitrate combustion synthesis and electrical properties of rare earth co-doped Ce0. 8Gd0. 2− xNdxO1. 90 electrolyte materials | |
| JP5969632B2 (en) | Method for synthesizing air electrode powder for medium- and low-temperature solid oxide fuel cells by sol-gel method | |
| CN108242554B (en) | Barium cerate-based electrolyte material and preparation method and application thereof | |
| Balci et al. | Effect of ratios of dopant contents on the electrical conductivity of Bi2O3 ceramics co–doped with some rare earth oxides | |
| CN109942293A (en) | A kind of method that the combustion-supporting method of microwave prepares LMO-YSZ composite solid electrolyte | |
| CN113233518B (en) | Solid oxide fuel cell anode catalytic material with multi-carbon fuel catalytic hydrogen production function and preparation method thereof | |
| Ibrahim et al. | Novel synthesis of stabilized Bi1–x–yGdxDyyO1. 5 solid electrolytes with enhanced conductivity for intermediate temperature solid oxide fuel cells (SOFCs) | |
| Hu et al. | The preparation and electrical properties of La doped Er0. 2Ce0. 8O1. 9 based solid electrolyte | |
| Liao et al. | Synthesis and characterization of Ga-doped Ba3MoNbO8. 5 electrolytes for intermediate temperature-solid oxide fuel cells | |
| WO2023193062A1 (en) | Electrode compositions | |
| Shi et al. | Synthesis and characterization of La0. 85Sr0. 15Ga0. 80Mg0. 20O2. 825 by glycine combustion method and EDTA combustion method | |
| Singh et al. | Glycine-nitrates combustion synthesis and properties of nano-sized Ce1-xGdxO2-delta solid solution for solid oxide fuel cell viewpoint | |
| CN111943669A (en) | Preparation method for synthesizing lanthanum hafnate powder by sol-gel method | |
| JP3604210B2 (en) | Method for producing NiO / YSZ composite powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20111228 |