CN106953111B - A kind of preparation method of samarium doping cerium oxide solid electrolyte powder - Google Patents
A kind of preparation method of samarium doping cerium oxide solid electrolyte powder Download PDFInfo
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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
- 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
- H01M8/126—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 cerium oxide
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Abstract
The present invention provides a kind of preparation method of Sm doped CeO_2 solid electrolyte powder, belongs to fuel cell field.It is characterized in that cerous nitrate and samaric nitrate, ammonium carbonate are each configured to solution A and B, BYK Series Dispersant is added in sal volatile, and citric acid, oxalic acid, ammonium chloride are configured to solution C.Solution A and C are mixed in precipitating and instilled in solution B and is stirred to react generation precipitating.Precipitation and separation is cleaned, is dry, is calcined and is crushed and obtains nanoscale SDC powder.The method of the present invention is easy to get nanoscale, spherical, good dispersion SDC powder.The entire process flow of the method for the present invention is easily controllable, and technique is portable.Stable processing technique is promoted simultaneously, and product uniformity consistency is promoted.This pulverulence is very useful for the subsequent solid electrolyte film for preparing.
Description
Technical field
The invention belongs to fuel cell fields, relate more specifically to a kind of solid electrolyte of solid oxide fuel cell
Powder preparation method.
Background technique
Fuel cell is also known as electrochemical generator, and the chemical energy being stored in fuel and oxidant is converted into electricity by it
Energy.Fuel cell can be divided into five big types: phosphate fuel cell (PAFC), polymer dielectric according to the difference of electrolyte
Membrane cell (PEMFC), alkaline fuel cell (AFC), molten carbonate fuel cell (MCFC), solid oxide fuel electricity
Pond (SOFC).Solid oxide fuel cell (Solid Oxide Fuel Cell, abbreviation SOFC) is made using solid ceramic materials
It is a kind of efficient, environmental-friendly all solid state chemical generated device for electrolyte.SOFC is a kind of total solids ceramic material fuel
Battery, has and can avoid liquid electrolyte etching problem, operating temperature height (600-1000 DEG C), and reactant easily obtains enough energy
Reach activated state, accelerate kinetic reaction process, does not need noble metal as catalyst, reduce production cost, joined using thermoelectricity
Produce the advantages that improving cell power generation efficiency.
Solid oxide fuel cell (SOFC) is by fine and close oxide ceramics solid electrolyte and two porous electrodes
The electrochemical generating unit that (one is the anode for contacting fuel, the other is the cathode of catalytic oxidation agent) is constituted.It is electrolysed material
Material is the core material of SOFC, and it is oxygen ion conductor under high temperature, and can be to fuel that the main function of electrolyte, which is conduction ion,
And oxidant is effectively isolated, and difference in oxygen concentration is formed, and the electronics conduction in electrolyte can generate the two poles of the earth short circuit consumption energy
Amount to reduce the electric current delivery efficiency of battery, therefore requires electrolyte to have a biggish ion conductivity first, and electronics
Conductive capability wants as small as possible.Compactness, preferable stability are additionally needed, good chemical compatibility and certain heat are swollen
Swollen coefficient.
Zirconium oxide is one of to develop earliest and study more sufficient material as SOFC electrolyte, belongs to high-temp solid electricity
It is a series of problems, such as solution material, this hot operation brings interfacial reaction, electrode sintering, thermal expansion coefficient mismatch, right
It is also quite stringent in the requirement of material.And cerium oxide, bismuth oxide, lanthanum gallate based perovskite class, phosphorus ash stone these four be medium temperature
Solid electrolyte material, it is advantageous that reducing temperature, wherein cerium oxide is one got growing concern in recent years
Kind solid electrolyte material.Pure CeO2It is a kind of hybrid conductor, oxonium ion, electrons and holes conduction are several to the contribution of conductivity
It is identical.After adulterated alkaline-earth metal and rare-earth oxide, such as: SrO, CaO, Gd2O3、Sm2O3Deng CeO2The ion of electrolyte
Electric conductivity can increase substantially, it is now recognized that Sm2O3It is a kind of preferable dopant.Doping method has solid reaction process, colloidal sol solidifying
Glue method, coprecipitation, and coprecipitation further includes oxalate coprecipitation method, carbonate co-precipitation, co-precipitating with nitrate.And
The method of the prior art in terms of powder raw material is adulterated in preparation, still deposit by powder size, granule-morphology and dispersibility etc.
In some problems, adversely affected to electrolyte is prepared.
Summary of the invention
The present invention provides a kind of solid fuel cell (SOFC), the preparation of Sm doped CeO_2 (SDC) electrolyte powder
Method is used for overcome the deficiencies in the prior art.
The preparation method of Sm doped CeO_2 electrolyte powder of the present invention includes the following steps:
(1) by Ce (NO3)3·6H2O is made into the cerous nitrate solution of concentration 1mol/L with deionized water dissolving；
(2) by Sm (NO3)3·6H2O is made into the samarium nitrate solution that concentration is 1mol/L with deionized water dissolving；
(3) cerous nitrate solution and samarium nitrate solution are mixed according to the ratio of volume ratio 4:1, and is diluted to deionized water
The sum of Ce and Sm concentration of metal ions is 0.05mol/L, obtains solution A；
(4) ammonium carbonate is made into the sal volatile of 0.05mol/L with deionized water dissolving, dispersing agent is added wherein
One of BYK180, BYK182, BYK190, BYK192, concentration reach 0.2-0.4g/L, obtain B solution；
(5) citric acid, oxalic acid and ammonium chloride are dissolved into solution with deionized water, citric acid concentration 0.08-0.12g/L,
Concentration of oxalic acid 0.2-0.3g/L, ammonium chloride concentration 0.15-0.2g/L, obtains C solution；
(6) A, B, C solution are got out in the ratio of the volume ratio 1:2:1 of solution A, B solution and C solution, it is first that A and C is molten
Liquid is uniformly mixed, and AC mixed solution is and then instilled B solution with 50-80ml/min speed, while quickly stirring to B solution,
Stirring 10-30 minutes is further continued for after dripping off；
(7) sediment is centrifugated out, sediment is washed with deionized, is centrifugated again, so three times；
(8) sediment is 1-2 hours dry at 100-120 DEG C, air-flow crushing, then calcining 2-3 is small at 730-780 DEG C
When, by air-flow crushing, obtain Ce0.8Sm0.2O1.9(SDC) powder, powder size 11-14nm, shape are spherical shape, good dispersion.
The present invention has following notable feature compared with prior art:
(1) various material composition classification configurations；
(2) cerous nitrate and samaric nitrate mixed solution concentration and sal volatile concentration are suitably reduced；
(3) citric acid, oxalic acid and ammonium chloride are added in cerous nitrate and samaric nitrate mixed solution；
(4) BYK Series Dispersant is added in sal volatile；
In the methods of the invention, required raw material is dissolved into solution in advance, makes entire process flow easily controllable in this way,
It is able to use metering pump in industrial processes to add and control solution quantity, technique is portable.By the way that various material compositions are divided
Class configuration, appropriate dilute solution concentration, and using citric acid, oxalic acid, ammonium chloride and BYK Series Dispersant, reach and is easy to control
SDC powder size, shape and dispersibility processed.Stable processing technique is promoted simultaneously, and product uniformity consistency is promoted.
The advantage of SDC powder prepared by the present invention is: Sm doped CeO_2 powder (SDC) granularity is nanoscale, only
More than ten nanometers, and shape is spherical, good dispersion.This pulverulence is very for the subsequent solid electrolyte film for preparing
Beneficial.
Detailed description of the invention
Fig. 1 is the TEM photo of the SDC powder of the method for the present invention preparation；
Fig. 2 is the TEM photo that the SDC powder of oxalic acid preparation is not used in the method for the present invention；
Fig. 3 is the TEM photo that the SDC powder of ammonium chloride preparation is not used in the method for the present invention.
Specific embodiment
The method of the present invention be based on coprecipitation principle, be react to generate with ammonium carbonate using the salt of the samarium of cerium to precipitate, then
Sediment is separated and obtains final Sm doped CeO_2 solid electrolyte powder by drying and calcining.
In the methods of the invention, required raw material is dissolved into solution in advance, makes entire process flow easily controllable in this way,
It is able to use metering pump in industrial processes to add and control solution quantity, technique is portable.
In the method for the present invention, (1) step is by Ce (NO3)3·6H2O is made into concentration 1mol/L's with deionized water dissolving
Cerous nitrate solution；(2) step is by Sm (NO3)3·6H2It is molten that O with deionized water dissolving is made into the samaric nitrate that concentration is 1mol/L
Liquid.Why cerous nitrate and samaric nitrate raw material be dissolved into solution respectively, can increase herein examine cerium and samarium content in this way
Operation procedure, to reach the ratio of both accurate control.Component difference caused by due to raw material fluctuation etc. is effectively avoided,
Keep final material performance unstable, stable and consistent local specialties quality is realized with this.
(3) step of the method for the present invention is to mix cerous nitrate solution and samarium nitrate solution according to the ratio of volume ratio 4:1
It closes, and being diluted to Ce and Sm concentration of metal ions with deionized water is 0.05mol/L, obtains solution A.In Sm doped CeO_2
In solid electrolyte, the molar ratio of cerium and samarium is fixed 4:1, is in this step first uniformly mixed the two by this alloy, then
Further dilution.Determining that being diluted to Ce and Sm concentration of metal ions is 0.05mol/L according to experimental result, solution concentration is excessively high,
Powder particle is thick, high production efficiency；Solution concentration is too low, and powder particle is tiny, and production efficiency is low.
(4) step of the invention is the sal volatile that ammonium carbonate is made into 0.05mol/L with deionized water dissolving, at it
One of middle addition dispersant B YK180, BYK182, BYK190, BYK192, concentration reaches 0.2-0.4g/L, obtains B solution.
These types of BYK dispersing agent can be dissolved in water, and result of study discovery has good deflocculation, Xie Xu for SDC powder preparing processes
Solidifying and stabilization, the effect of the dispersing agents such as the polyethylene glycol used compared with prior art, neopelex have obviously
It is good very much.
(5) step of the invention is that citric acid, oxalic acid and ammonium chloride are dissolved into solution with deionized water, citric acid concentration
0.08-0.12g/L, concentration of oxalic acid 0.2-0.3g/L, ammonium chloride concentration 0.15-0.2g/L obtain C solution.Citric acid plays heavy
The peptizaiton at shallow lake initial stage helps to reduce particle size, prevents particle agglomeration.The addition of oxalic acid can increase forming core when precipitating
Rate further decreases particle size with citric acid cooperation.It can be seen that unused oxalic acid system from the comparison of attached drawing 2 and attached drawing 1
Standby powder particle size is bigger than normal.The addition of ammonium chloride is played the role of modifying granule-morphology, and grain shape is made to tend to be spherical.From
The granule-morphology complexity that the comparison of attached drawing 3 and attached drawing 1 and attached drawing 2 can be seen that unused ammonium chloride is random, and it is tight to reunite
Weight.
(6) step of the invention is that get out A, B, C in the ratio of the volume ratio 1:2:1 of solution A, B solution and C solution molten
Liquid, appropriate excessive ammonium carbonate is here to guarantee that cerium and samarium are precipitated out completely.First A and C solution are uniformly mixed, then mix AC
It closes solution and B solution is instilled with 50-80ml/min speed, while B solution is quickly stirred, 10-30 points of stirring are further continued for after dripping off
Clock.The citric acid of C solution, oxalic acid and ammonium chloride and solution A are not mixed in the present invention, because discovery is blended in
Standing time is more than 1 hour or more together, the big heavy discount of effect for the control particle size and shape that they are played.Furthermore
These ingredients are larger for the effect for adjusting particle size and shape, and separate configuration is conducive in process of production by adjusting in time
Section additional amount reaches control product quality.
(7) step of the invention is to be centrifugated out by sediment, and sediment is washed with deionized, again centrifugation point
From so three times.This process be other Ion Cleanings are clean, otherwise powder is hardened tight after subsequent drying and calcination process
Weight, it is not easy to broken.
(8) step of the invention is sediment is 1-2 hours dry at 100-120 DEG C, air-flow crushing, then in 730-
It is calcined 2-3 hours at 780 DEG C, by air-flow crushing, obtains Ce0.8Sm0.2O1.9(SDC) powder, powder size 11-14nm, shape
For spherical shape, good dispersion.It is first crushed once after drying, is conducive to the dispersion of final powder, grit is avoided to occur, make finally to produce
Product uniformity consistency is promoted.It can prevent from polluting using air-flow crushing, reduce granularity, improve dispersibility.
In conclusion in the methods of the invention, required raw material being dissolved into solution in advance, makes entire process flow easy in this way
In control, it is able to use metering pump in industrial processes and adds and controls solution quantity, technique is portable.By by various originals
Expect compositional classification configuration, appropriate dilute solution concentration, and utilize citric acid, oxalic acid, ammonium chloride and BYK Series Dispersant, reaches
To easily controllable SDC powder size, shape and dispersibility.Stable processing technique is promoted simultaneously, product uniformity consistency
It is promoted.
The advantage of SDC powder prepared by the present invention is: Sm doped CeO_2 powder (SDC) granularity is nanoscale, only
More than ten nanometers, and shape is spherical, good dispersion.This pulverulence is very for the subsequent solid electrolyte film for preparing
Beneficial.
Embodiment 1
SDC powder is prepared according to the following steps:
(1) by Ce (NO3)3·6H2O is made into the cerous nitrate solution of concentration 1mol/L with deionized water dissolving；
(2) by Sm (NO3)3·6H2O is made into the samarium nitrate solution that concentration is 1mol/L with deionized water dissolving；
(3) cerous nitrate solution and samarium nitrate solution are mixed according to the ratio of volume ratio 4:1, and is diluted to deionized water
The sum of Ce and Sm concentration of metal ions is 0.05mol/L, obtains solution A；
(4) ammonium carbonate is made into the sal volatile of 0.05mol/L with deionized water dissolving, dispersing agent is added wherein
BYK180, concentration reach 0.2g/L, obtain B solution；
(5) citric acid, oxalic acid and ammonium chloride are dissolved into solution with deionized water, citric acid concentration 0.08g/L, oxalic acid is dense
0.2g/L is spent, ammonium chloride concentration 0.15g/L obtains C solution；
(6) A, B, C solution are got out in the ratio of the volume ratio 1:2:1 of solution A, B solution and C solution, it is first that A and C is molten
Liquid is uniformly mixed, and AC mixed solution is and then instilled B solution with 80ml/min speed, while quickly stirring to B solution, dripped off
After be further continued for stirring 30 minutes；
(7) sediment is centrifugated out, sediment is washed with deionized, is centrifugated again, so three times；
(8) sediment is 1 hour dry at 120 DEG C, air-flow crushing, then calcined 2 hours at 780 DEG C, by air-flow
It crushes, obtains Ce0.8Sm0.2O1.9(SDC) powder, powder size 14nm, shape are spherical shape, good dispersion.
Embodiment 2
SDC powder is prepared according to the following steps:
(1) by Ce (NO3)3·6H2O is made into the cerous nitrate solution of concentration 1mol/L with deionized water dissolving；
(2) by Sm (NO3)3·6H2O is made into the samarium nitrate solution that concentration is 1mol/L with deionized water dissolving；
(3) cerous nitrate solution and samarium nitrate solution are mixed according to the ratio of volume ratio 4:1, and is diluted to deionized water
Ce and Sm concentration of metal ions is 0.05mol/L, obtains solution A；
(4) ammonium carbonate is made into the sal volatile of 0.05mol/L with deionized water dissolving, dispersing agent is added wherein
BYK182, concentration reach 0.25g/L, obtain B solution；
(5) citric acid, oxalic acid and ammonium chloride are dissolved into solution with deionized water, citric acid concentration 0.1g/L, oxalic acid is dense
0.25g/L is spent, ammonium chloride concentration 0.16g/L obtains C solution；
(6) A, B, C solution are got out in the ratio of the volume ratio 1:2:1 of solution A, B solution and C solution, it is first that A and C is molten
Liquid is uniformly mixed, and AC mixed solution is and then instilled B solution with 70ml/min speed, while quickly stirring to B solution, dripped off
After be further continued for stirring 30 minutes；
(7) sediment is centrifugated out, sediment is washed with deionized, is centrifugated again, so three times；
(8) sediment is 1 hour dry at 120 DEG C, air-flow crushing, then calcined 2 hours at 770 DEG C, by air-flow
It crushes, obtains Ce0.8Sm0.2O1.9(SDC) powder, powder size 13nm, shape are spherical shape, good dispersion.
Embodiment 3
SDC powder is prepared according to the following steps:
(1) by Ce (NO3)3·6H2O is made into the cerous nitrate solution of concentration 1mol/L with deionized water dissolving；
(2) by Sm (NO3)3·6H2O is made into the samarium nitrate solution that concentration is 1mol/L with deionized water dissolving；
(3) cerous nitrate solution and samarium nitrate solution are mixed according to the ratio of volume ratio 4:1, and is diluted to deionized water
The sum of Ce and Sm concentration of metal ions is 0.05mol/L, obtains solution A；
(4) ammonium carbonate is made into the sal volatile of 0.05mol/L with deionized water dissolving, dispersing agent is added wherein
BYK190, concentration reach 0.3g/L, obtain B solution；
(5) citric acid, oxalic acid and ammonium chloride are dissolved into solution with deionized water, citric acid concentration 0.12g/L, oxalic acid is dense
0.27g/L is spent, ammonium chloride concentration 0.18g/L obtains C solution；
(6) A, B, C solution are got out in the ratio of the volume ratio 1:2:1 of solution A, B solution and C solution, it is first that A and C is molten
Liquid is uniformly mixed, and AC mixed solution is and then instilled B solution with 60ml/min speed, while quickly stirring to B solution, dripped off
After be further continued for stirring 20 minutes；
(7) sediment is centrifugated out, sediment is washed with deionized, is centrifugated again, so three times；
(8) sediment is 1 hour dry at 110 DEG C, air-flow crushing, then calcined 3 hours at 750 DEG C, by air-flow
It crushes, obtains Ce0.8Sm0.2O1.9(SDC) powder, powder size 12nm, shape are spherical shape, good dispersion.
Embodiment 4
SDC powder is prepared according to the following steps:
(1) by Ce (NO3)3·6H2O is made into the cerous nitrate solution of concentration 1mol/L with deionized water dissolving；
(2) by Sm (NO3)3·6H2O is made into the samarium nitrate solution that concentration is 1mol/L with deionized water dissolving；
(3) cerous nitrate solution and samarium nitrate solution are mixed according to the ratio of volume ratio 4:1, and is diluted to deionized water
The sum of Ce and Sm concentration of metal ions is 0.05mol/L, obtains solution A；
(4) ammonium carbonate is made into the sal volatile of 0.05mol/L with deionized water dissolving, dispersing agent is added wherein
BYK192, concentration reach 0.4g/L, obtain B solution；
(5) citric acid, oxalic acid and ammonium chloride are dissolved into solution with deionized water, citric acid concentration 0.12g/L, oxalic acid is dense
0.3g/L is spent, ammonium chloride concentration 0.2g/L obtains C solution；
(6) A, B, C solution are got out in the ratio of the volume ratio 1:2:1 of solution A, B solution and C solution, it is first that A and C is molten
Liquid is uniformly mixed, and AC mixed solution is and then instilled B solution with 50ml/min speed, while quickly stirring to B solution, dripped off
After be further continued for stirring 10 minutes；
(7) sediment is centrifugated out, sediment is washed with deionized, is centrifugated again, so three times；
(8) sediment is 2 hours dry at 100 DEG C, air-flow crushing, then calcined 3 hours at 730 DEG C, by air-flow
It crushes, obtains Ce0.8Sm0.2O1.9(SDC) powder, powder size 11nm, shape are spherical shape, good dispersion.
Claims (8)
1. a kind of preparation method of samarium doping cerium oxide solid electrolyte powder, it is characterised in that include the following steps:
(1) by Ce (NO3)3·6H2O is made into cerous nitrate solution with deionized water dissolving；
(2) by Sm (NO3)3·6H2O is made into samarium nitrate solution with deionized water dissolving；
(3) cerous nitrate solution and samarium nitrate solution are mixed and obtains solution A after being diluted with deionized water；
(4) sal volatile for being made into ammonium carbonate with deionized water dissolving, addition dispersing agent, dispersing agent BYK180,
One of BYK182, BYK190, BYK192 obtain B solution；
(5) it is mixed after citric acid, oxalic acid and ammonium chloride being dissolved into solution with deionized water, obtains C solution；
(6) A, B, C solution are got out, is first uniformly mixed A and C solution, and then by AC mixed solution with 50-80mL/min speed
Degree instills B solution, while quickly stirring to B solution, and stirring 10-30 minutes is further continued for after dripping off；
(7) sediment is centrifugated out, sediment is washed with deionized, is centrifugated again, so three times；
(8) for a period of time by drying precipitate, air-flow crushing, then calcine, by air-flow crushing, obtain Ce0.8Sm0.2O1.9(SDC)
Powder, powder size 11-14nm, shape are spherical shape, good dispersion.
2. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (1) institute
Stating cerous nitrate solution concentration is 1mol/L.
3. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (2) institute
Stating samarium nitrate solution concentration is 1mol/L.
4. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (3) institute
The volume ratio for stating cerous nitrate solution and samarium nitrate solution is 4:1；The sum of Ce and Sm concentration of metal ions is in solution A after dilution
0.05mol/L。
5. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (4) institute
Stating sal volatile concentration is 0.05mol/L, dispersant concentration 0.2-0.4g/L.
6. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (5) institute
Stating citric acid concentration is 0.08-0.12g/L, concentration of oxalic acid 0.2-0.3g/L, ammonium chloride concentration 0.15-0.2g/L.
7. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (6) institute
The volume ratio for stating solution A, B solution and C solution is 1:2:1.
8. the preparation method of samarium doping cerium oxide solid electrolyte powder as described in claim 1, it is characterised in that step (8) institute
State 100-120 DEG C of drying precipitate temperature, drying time 1-2 hour, 730-780 DEG C of calcination temperature, calcination time 2-3 hours.
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| CN103035936A (en) * | 2012-12-27 | 2013-04-10 | 清华大学 | Preparation method of composite electrolyte powder for medium-and-low-temperature solid oxide fuel cell |
| CN105895945A (en) * | 2016-06-20 | 2016-08-24 | 吉林大学 | Samaria doped ceria electrolyte doped with nano-diamond powder, and preparation method thereof |
| CN106450352A (en) * | 2016-12-08 | 2017-02-22 | 常熟理工学院 | Carbon deposition-resistant solid oxide fuel cell anode and preparation method thereof |
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| CN103035936A (en) * | 2012-12-27 | 2013-04-10 | 清华大学 | Preparation method of composite electrolyte powder for medium-and-low-temperature solid oxide fuel cell |
| CN105895945A (en) * | 2016-06-20 | 2016-08-24 | 吉林大学 | Samaria doped ceria electrolyte doped with nano-diamond powder, and preparation method thereof |
| CN106450352A (en) * | 2016-12-08 | 2017-02-22 | 常熟理工学院 | Carbon deposition-resistant solid oxide fuel cell anode and preparation method thereof |
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| 共沉淀剂和凝胶配体对湿法合成Ce0.8Sm0.2O1.90性能的影响;佟泽等;《电源技术》;20140331;第38卷(第3期);第450-453页 |
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