CN109449469A - Method for synthesizing bismuth oxide-based electrolyte material of solid oxide fuel cell by coprecipitation method - Google Patents
Method for synthesizing bismuth oxide-based electrolyte material of solid oxide fuel cell by coprecipitation method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910000416 bismuth oxide Inorganic materials 0.000 title claims abstract description 25
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 239000002001 electrolyte material Substances 0.000 title claims abstract description 19
- 239000007787 solid Substances 0.000 title claims abstract description 18
- 238000000975 co-precipitation Methods 0.000 title claims abstract description 12
- 230000002194 synthesizing effect Effects 0.000 title abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- LLZBVBSJCNUKLL-UHFFFAOYSA-N thulium(3+);trinitrate Chemical compound [Tm+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O LLZBVBSJCNUKLL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000001376 precipitating effect Effects 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000003786 synthesis reaction Methods 0.000 claims description 9
- 239000003153 chemical reaction reagent Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000012805 post-processing Methods 0.000 claims description 4
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010189 synthetic method Methods 0.000 claims 6
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 229910001388 sodium aluminate Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010923 batch production Methods 0.000 abstract 1
- 239000012716 precipitator Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 11
- 239000003792 electrolyte Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001621 bismuth Chemical class 0.000 description 1
- 229940049676 bismuth hydroxide Drugs 0.000 description 1
- TZSXPYWRDWEXHG-UHFFFAOYSA-K bismuth;trihydroxide Chemical compound [OH-].[OH-].[OH-].[Bi+3] TZSXPYWRDWEXHG-UHFFFAOYSA-K 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- CJJMLLCUQDSZIZ-UHFFFAOYSA-N oxobismuth Chemical class [Bi]=O CJJMLLCUQDSZIZ-UHFFFAOYSA-N 0.000 description 1
- QGWDKKHSDXWPET-UHFFFAOYSA-E pentabismuth;oxygen(2-);nonahydroxide;tetranitrate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[O-2].[Bi+3].[Bi+3].[Bi+3].[Bi+3].[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QGWDKKHSDXWPET-UHFFFAOYSA-E 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005118 spray pyrolysis Methods 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910006362 δ-Bi2O3 Inorganic materials 0.000 description 1
Classifications
-
- 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
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
- H01M8/1266—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides the electrolyte containing bismuth oxide
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A method for synthesizing a bismuth oxide-based electrolyte material of a solid oxide fuel cell by a coprecipitation method relates to the technical field of solid oxide fuel cell electrolyte material manufacturing. Adding bismuth nitrate aqueous solution (Bi (NO)3)3·5H2O) and thulium nitrate in water (Tm (NO)3)3·5H2O) mixing, placing in a reaction kettle, and adding a precipitator to carry out hydrothermal uniform coprecipitation reaction; after the reaction is completed, the bismuth oxide (Bi) of the solid oxide fuel cell is obtained by post-treatment2O3) A base electrolyte material. The bismuth oxide-based electrolyte material prepared by the chemical coprecipitation method has the advantages of high material purity, uniform particle size distribution, controllable particle size, regular shape, higher activity, ultrafine powder, short period, low cost, safety, reliability, simple process, suitability for batch production and the like.
Description
Technical field
The present invention relates to solid-oxide fuel battery electrolyte material manufacturing technology field, in particular to a kind of co-precipitation
The method of method synthesis of solid oxide fuel cell bismuth oxide base electrolyte material.
Background technique
Solid oxide fuel cell (Solid oxide fuel cells, SOFC) is known as 21 century and most develops
One of energy technology of potentiality.Currently, the middle low temperature of solid oxide fuel cell (SOFC) is SOFC commercialized development
Key, research shows that the use of the filming of the electrolyte and electrolyte with high oxygen ionic conductivity being to realize
The main path of low temperature in SOFC.Electrolyte is the most crucial component of SOFC, and charged transport property and hot expansion property are not
But the operating temperature and energy conversion efficiency for directly affecting battery, also determine matched cathode and anode material and
The selection of corresponding technology of preparing.Due to bismuth oxide base electrolyte oxygen ionic conductivity with higher at a lower temperature, 500
DEG C when ionic conductance can reach 1 × 10-2S/cm, in 750 DEG C of about 1S/cm, and its synthesis temperature is low, is easy to sinter densification into
Ceramics, it is highly beneficial to the reduction internal resistance of cell and production fuel cell, it is used as intermediate temperature solid oxide fuel cell and relatively manages
The electrolyte thought.
δ-Bi2O3It is a kind of special material, there is cubic fluorite mine type structure, there is 1/4 oxonium ion position in lattice
It is vacancy, thus there is very high oxygen ionic conductivity.It is than existing zirconium electrolyte, such as YSZ (Zr1- xYxO2-X/2), high 1~2 order of magnitude of electric conductivity at the same temperature, if YSZ can be replaced in solid fuel cell, to mentioning
High battery efficiency and service life save battery materials and simplify battery production, be extremely important.Bismuth oxide is as a kind of
Advanced powder body material, in addition to other than having application in terms of electrolyte, in other respects, such as in electronic ceramics powder body material, photoelectricity
Material, catalyst, nuclear waste absorbing material etc. have good application prospect.With the continuous depth of bismuth oxide application study
Enter the continuous reinforcement with the environmentally protective consciousness of people, the application of bismuth oxide will be more wide.We should make full use of bismuth data
Advantage, further increase bismuth oxide application study dynamics, continually develop its new application field, for promoted China's tradition produce
Industry and raising associated materials performance make positive contribution.
In recent years, to Bi2O3The exploration of preparation method and application caused the broad interests of researchers at home and abroad.
Preparation method is divided into hard chemical method and softening method two major classes.Hard chemical method: because bismuth salt is particularly easy to hydrolyze and give birth to
At products such as novismuth, bismuth hydroxide and alkali formula bismuth oxides, in the past mostly using it is traditional be chemically synthesized firmly it is pure
Bismuth oxide.Mainly using high temperature solid-state method and spray pyrolysis etc..Softening method: the basic principle for softening is in temperature
Under conditions of relatively low, connect " hard " structure piece with " soft " solvent or organic molecule by chemical reaction, or
It is to assist successfully synthesizing with physical means such as microwave and ultrasounds forming the nano material that special, pattern is different, has excellent performance, these
Property is that traditional chemical reaction firmly is unapproachable.Softening method applied in studying at present: low temperature liquid polymerization process, microwave
Method harmony chemical method.Wherein, there are coprecipitation, hydro-thermal method, colloidal sol-using the method that low temperature liquid polymerization process prepares nano bismuth oxide
Gel method, microemulsion method and solvent-thermal method etc..Coprecipitation because of its material purity height, even particle size distribution, particle size be controllable,
Morphological rules, activity are higher, and superfine powder, the period is short, at low cost, and securely and reliably, simple process is suitable for the advantages that producing in batches
And it easily promotes and applies.
Summary of the invention
The purpose of the present invention is to propose to a kind of Co deposited synthesis solid oxide fuel cell bismuth oxide base electrolyte materials
The method of material, to overcome the defect in the prior art, the bismuth oxide base electrolyte material of synthesis is with high purity, even particle size distribution,
Particle size is controllable, the molding and sintering being easy in subsequent technique.
To realize the purpose, the invention adopts the following technical scheme:
A kind of method of Co deposited synthesis solid oxide fuel cell bismuth oxide base electrolyte material, by bismuth nitrate water
Solution (Bi (NO3)3·5H2) and thulium nitrate aqueous solution (Tm (NO O3)3·5H2O) mixing is placed in reaction kettle and precipitating is added
Agent carry out the uniform coprecipitation reaction of hydro-thermal, reaction temperature be 250~350 DEG C, the reaction time be 12~20h, aqueous bismuth nitrate solution,
The molar concentration of thulium nitrate aqueous solution is followed successively by 0.06~0.6mol/L, 0.02~0.2mol/L, aqueous bismuth nitrate solution and nitric acid
Volume ratio between thulium aqueous solution is 1~30:1；Solid oxide fuel cell bismuth oxide is obtained through post-processing after fully reacting
(Bi2O3) base electrolyte material.
Preferably, precipitating reagent is one of ammonium hydroxide, sodium hydroxide, potassium hydroxide, sodium metaaluminate, aluminum sulfate or two
Kind.Molar ratio between precipitating reagent and bismuth nitrate is 15~45:1.Precipitating reagent is added to reaction kettle using form is slowly added dropwise
In, 1.5~2.5h of strong stirring after addition.
As a further improvement, the uniform coprecipitation reaction of hydro-thermal is to be placed in reaction kettle in constant temperature blast drying oven to carry out
's.Post-processing is to be separated by solid-liquid separation reaction product, wash and be placed in thermostatic drying chamber and be dried.It is done in thermostatic drying chamber
Dry temperature is 30~80 DEG C, and drying time is 5~12h.
Present invention Co deposited synthesis solid oxide fuel cell bismuth oxide base electrolyte material, mainly solves existing
The problems such as hydro-thermal method is more through high-temperature roasting and broken dispersion bring impurity, and performance particle diameter is big, unstable quality.The present invention
Provided chemical coprecipitation prepares bismuth oxide base electrolyte material, with material purity height, even particle size distribution, particle
Size is controllable, morphological rules, activity are higher, and superfine powder, the period is short, and at low cost, securely and reliably, simple process is suitable for batch
The advantages that production.
Detailed description of the invention
Fig. 1 is the XRD diagram of 1 products therefrom of embodiment.
Fig. 2 is that the SEM of 1 products therefrom of embodiment schemes.
Fig. 3 is the XRD diagram of 2 products therefrom of embodiment.
Fig. 4 is that the SEM of 2 products therefrom of embodiment schemes.
Specific embodiment
Below by way of the specific embodiment Co deposited synthesis solid oxide fuel electricity that present invention be described in more detail
The method of pond bismuth oxide base electrolyte material.
Embodiment 1
Weigh the bismuth nitrate (Bi (NO of 8.625g3)3·5H2) and the thulium nitrate of 2.058g (Tm (NO O3)3·5H2O), by two
Person is dissolved in respectively in the distilled water of 100mL and 50mL, and it is the uniform molten of 0.178mol/L and 0.092mol/L that stirring, which forms concentration,
Liquid is transferred in the reaction kettle that volume is 250mL after mixing two kinds of solution, and aluminum sulfate is slowly added dropwise, and (additive amount is according to precipitating
Molar ratio between agent and bismuth nitrate is 30:1), is sealed after strong stirring 2h, reaction kettle is placed in constant temperature blast drying oven and heats
To 250 DEG C of heat preservation 20h, stops heating cooled to room temperature, product is filtered, washed, dries (50 DEG C, 10h), consolidate
Oxide body fuel cell bismuth oxide (Bi2O3) base electrolyte material.
Fig. 1 is the XRD spectrum of 1 products therefrom of embodiment, it can be seen that product purity is higher.Fig. 2 is to produce obtained by embodiment 1
The SEM of object schemes, it can be seen that the cavity of gained potsherd is seldom, consistency is higher.
Embodiment 2
Weigh the bismuth nitrate (Bi (NO of 9.083g3)3·5H2) and the thulium nitrate of 1.530g (Tm (NO O3)3·5H2O), by two
Person is dissolved in respectively in the distilled water of 100mL and 70mL, and it is the uniform molten of 0.187mol/L and 0.049mol/L that stirring, which forms concentration,
Liquid is transferred in the reaction kettle that volume is 200mL after mixing two kinds of solution, and sodium hydroxide solution is slowly added dropwise, and (additive amount is pressed
It is 20:1) according to the molar ratio between precipitating reagent and bismuth nitrate, is sealed after strong stirring 2.5h, reaction kettle is placed in constant temperature forced air drying
It is heated to 300 DEG C of heat preservation 15h in case, stops heating cooled to room temperature, product is filtered, washed, dries (70 DEG C,
6h), solid oxide fuel cell bismuth oxide (Bi is obtained2O3) base electrolyte material.
Fig. 3 is the XRD spectrum of 2 products therefrom of embodiment, it can be seen that product purity is higher.Fig. 4 is to produce obtained by embodiment 2
The SEM of object schemes, it can be seen that the cavity of gained potsherd is seldom, consistency is higher.
It should be pointed out that the present invention is not limited only to embodiment listed above, it is all can be direct from the content of present invention
Export or enlightenment, which join conceivable the relevant technologies, should belong to the range that the present invention covers protection.
Claims (7)
1. a kind of method of Co deposited synthesis solid oxide fuel cell bismuth oxide base electrolyte material, it is characterised in that:
By aqueous bismuth nitrate solution (Bi (NO3)3·5H2) and thulium nitrate aqueous solution (Tm (NO O3)3·5H2O) mixing is placed in reaction kettle
And precipitating reagent is added and carries out the uniform coprecipitation reaction of hydro-thermal, reaction temperature is 250~350 DEG C, and the reaction time is 12~20h, nitre
Sour bismuth aqueous solution, thulium nitrate aqueous solution molar concentration be followed successively by 0.06~0.6mol/L, 0.02~0.2mol/L, bismuth nitrate water
Volume ratio between solution and thulium nitrate aqueous solution is 1~30:1；Solid oxide fuel is obtained through post-processing after fully reacting
Cell oxidation bismuth (Bi2O3) base electrolyte material.
2. synthetic method as described in claim 1, it is characterised in that: precipitating reagent be ammonium hydroxide, sodium hydroxide, potassium hydroxide, partially
One or both of sodium aluminate, aluminum sulfate.
3. synthetic method as claimed in claim 1 or 2, it is characterised in that: the molar ratio between precipitating reagent and bismuth nitrate is 15
~45:1.
4. synthetic method as claimed in claim 1 or 2, it is characterised in that: precipitating reagent be using be slowly added dropwise form be added to
In reaction kettle, 1.5~2.5h of strong stirring after addition.
5. synthetic method as described in claim 1, it is characterised in that: the uniform coprecipitation reaction of hydro-thermal is that reaction kettle is placed in perseverance
It is carried out in warm air dry oven.
6. synthetic method as described in claim 1, it is characterised in that: post-processing be by reaction product be separated by solid-liquid separation, wash with
And it is placed in thermostatic drying chamber and is dried.
7. synthetic method as claimed in claim 6, it is characterised in that: drying temperature is 30~80 DEG C in thermostatic drying chamber, is done
The dry time is 5~12h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871675A (en) * | 2021-08-25 | 2021-12-31 | 南京理工大学 | Method for repairing solid oxide battery thin film electrolyte |
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