CN105895945B - Mix the oxidation samarium doped ceria electrolytes and preparation method thereof of nano-diamond powder - Google Patents
Mix the oxidation samarium doped ceria electrolytes and preparation method thereof of nano-diamond 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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- 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
- H01M2008/1293—Fuel cells with solid oxide electrolytes
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Abstract
The oxidation samarium doped ceria electrolytes and preparation method thereof for mixing nano-diamond powder of the present invention, belong to the technical field of new energy-solid oxide fuel cell.The component of electrolyte is Sm2O3、CeO2、Ce2O3And nano-diamond powder, nano-diamond powder account for Sm2O3、CeO2And Ce2O3The 1%~2% of quality sum.Nano-diamond powder synthesis is added using powders by glycine-nitrate process and mixes the oxidation samarium doped ceria electrolytes powder of nano-diamond powder, then is made at 1400 DEG C of electrolyte sheet and is sintered with dry pressing.The present invention to make crystallite dimension increase, while increasing cerium ion Ce by the dopen Nano bortz powder in aoxidizing samarium doped ceria electrolytes material3+Content ratio, the two collectively promote oxygen vacancies concentration increase, cause increase ionic mobility, so as to cause the increase of monocell power.
Description
Technical field
The invention belongs to new energy-solid oxide fuel cell (referred to as：SOFC) technical field.More particularly to samarium oxide
Doped cerium oxide is (referred to as：SDC) electrolyte passes through nano-diamond powder (abbreviation：ND) the method for doping catalysis synthesizes a kind of new
Type SDC/ND composite S OFC electrolyte.
Background technology
SOFC monocells are made of SDC electrolyte, anode and cathode.
Currently, prepare electrolyte powder method have very much, different preparation methods can influence product micro-structure such as
Particle size, intergranular grain boundary width and porosity, therefore the conductivity of acquisition product and activation energy are also affected.Relative to
Solid phase method, hydro-thermal method, sol-gal process and coprecipitation, powders by glycine-nitrate process is simple with preparation, calcination temperature is low,
The advantages that reaction time is short, particle diameter distribution is uniform, large specific surface area.
It is a Ph.D.degree paper of Harbin Institute of Technology, thesis topic with the prior art similar in the present invention
It is " Sm0.2Ce0.8O1.9Electrolyte membrane fuel cell and electrode performance optimizing research ".Disclosed electrolyte powder preparation
It is to synthesize Sm using powders by glycine-nitrate process0.2Ce0.8O1.9Electrolyte.Detailed process is：Institute is calculated according to stoichiometric ratio
The dosage for needing raw material, by Sm2O3Being dissolved in the dilute nitric acid solution of heat becomes Sm (NO3)3Ce (NO are then added in solution3)3·
6H2The molar ratio of O, glycine and total metal ion are controlled 1.5:1, it is added as complexing agent.Later by sweet ammonia on electric furnace
Acid-nitrate mixed solution heating, with the evaporation of moisture, solution concentration constantly increases, and gradually becomes light yellow from colourless, most
Become pale red viscous brown jelly eventually, this constantly has bubble generation in the process, continues heating and spontaneous combustion occurs, combustion reaction is compared
Acutely, it is accompanied by a large amount of rufous NO2Gas is quickly released, and finally obtaining fluffy lurid SDC and a small amount of remnants has
The mixed-powder of machine object.Gained powder is calcined at 600,800,1000 DEG C to 2h respectively, is respectively labeled as SDC600, SDC800 and
SDC1000.Material phase analysis and microscopic appearance are carried out to powder and observe powder, reunion status analysis by the pressed by powder after pre-burning at
The pillar of a diameter of 6mm is used for the test of sintering character.The performance of Article analysis powder such as crystallite dimension, specific surface area, soft group
Situations such as poly- and hard aggregation, these performances are influenced by the Glycine Levels and flame temperature of building-up process.
Paper is disclosed prepares electrolytic thin-membrane with slurry spin coating technique.Specific method is first to prepare binder, by ethyl fibre
Tie up element ([C6H7O2(OC2H5)3]n) and terpinol (C10H18O) press 7.5:92.5 mass ratio is made into organic additive.By pine tar
Alcohol and ethyl cellulose heating are uniformly mixed, and the viscosity of binder is adjusted by the content of change ethyl cellulose.Then, by ball
SDC powders after mill press 30 with organic additive:70 quality is made into spin coating SDC slurries than mixed grinding 2h.Use spin coater
60s is run under the rotating speed of 8krpm, so that slurry is evenly distributed under the influence of centrifugal force on anode support surface and forms film
The defects of base, crackle caused by prevent organic matter from acutely volatilizing in sintering process and hole, per thin film under spin coating
It has all carried out being dried about 10min at 400 DEG C before one layer, the SDC electrolysis being finally densified in 1400 DEG C of co-sintering 4h
Matter film.When making electrolytic thin-membrane, electrode support has also carried out 1400 DEG C of sintering 4h therewith.
Currently, SOFC prepared by SDC electrolytes is widely applied.But prepared by SDC electrolytes
There is also following shortcoming and deficiencies for SOFC monocells：1. the electronic impedance of SDC electrolyte is low, the electricity that anode and cathode both sides generate
There are part electrical short phenomenons in the inside of SDC electrolyte for son, referred to as leak electricity (referring to Fig. 1).2. the inside of SDC electrolyte is brilliant
Particle size is usually smaller, and average grain size only has 44.3nm.To which intra-die impedance occupies larger, blocking SDC electrolyte
Internal oxonium ion passes through, and influences mobility of oxygen ion (referring to Fig. 2).3. since the electronic impedance of SDC electrolyte is low and oxygen is empty
The low problem of site concentration exists, and leads to the external circuit output current and output work of the SOFC monocells of SDC electrolytes preparation
Rate reduces.As shown in figure 3, the SOFC monocell power of control group only has~319mW/cm2。
Invention content
The problem to be solved in the present invention is to prepare the oxidation samarium doped ceria electrolytes for mixing nano-diamond powder, makes electrolysis
Matter has more high ionic mobility, and is conducive to improve the mechanical strength to electrolyte sheet.
The technical solution of the oxidation samarium doped ceria electrolytes for mixing nano-diamond powder of the present invention is as follows.
A kind of oxidation samarium doped ceria electrolytes for mixing nano-diamond powder, component have Sm2O3、CeO2、Ce2O3And nanometer
Bortz powder；Nano-diamond powder accounts for Sm2O3、CeO2And Ce2O3The 1%~2% of quality sum.
Sm in component2O3With CeO2And Ce2O3The sum of mass ratio be about 1: 5.57~5.60.
The preparation method technical solution of the oxidation samarium doped ceria electrolytes for mixing nano-diamond powder of the present invention is as follows
It is described.
A kind of preparation method of oxidation samarium doped ceria electrolytes that mixing nano-diamond powder, first dissolves samarium oxide
Samaric nitrate is made in the nitric acid and water of stoichiometry, adds six nitric hydrate ceriums, glycine and water mixing, heating stirring and obtains
The mass ratio of nitrate liquid, wherein samarium oxide, six nitric hydrate ceriums and water is 1: 14.10~14.11: 160~200；It is special
Sign is, then by bortz powder that particle diameter is 4~10nm in nitrate liquid, be heated with stirring to it is thick after be further continued for
Heating, until detonation occurs；Is carried out to detonation product, the samarium oxide for obtaining mixing nano-diamond powder is mixed 800 DEG C of 4 hours of calcining
Miscellaneous cerium oxide electrolyte powder；Electrolyte sheet finally is made with dry pressing, 4 hours are sintered at 1400 DEG C, obtain mixing nanometer
The oxidation samarium doped ceria electrolytes of bortz powder；Wherein the addition of bortz powder is the 0.0659 of samarium oxide by mass
~0.1318 times, glycine dosage is by 2 times that molar amount is samarium ion and cerium ion summation.
The bortz powder, preferably particle diameter are 5~6nm.
The addition of bortz powder is preferably 0.0659 times of samarium oxide by mass.
Electrolyte sheet is made in the dry pressing, is by the samarium oxide doped cerium oxide electricity obtained for mixing nano-diamond powder
Solution matter powder first carries out precompressed, pressure 0.6MPa, pressurize 1min；Then it grinds, again tabletting, pressure 0.6MPa,
Pressurize 1min.
Present invention improves over the manufacturing process of electrolyte sheet, are prepared for the electrolytic cell of self-supporting, are mainly manifested in pair
After the SDC electrolyte powders obtained for mixing nano-diamond powder carry out 800 DEG C of calcining 4 hours, electrolyte is made with dry pressing
Piece, then be sintered 4 hours with 1400 DEG C of high temperature sintering furnace.In this way so that self-supporting electrolytic cell has manufacture craft simple, nothing
Other backing materials and subsequent etching are needed, 1400 DEG C of high temperature are not needed to the sintering of electrode material, also not by the shadow of high temperature
It rings.
In the synthesis process, glycine amount ratio background technology is big by the present invention.Because glycine is as complexing agent, dosage
Samarium ion can be completely secured and cerium ion is completely dissolved in solution in increasing, or adds new substance later there are remaining
Amount.
ND doping way used in the present invention is different from other modes that trivalent ion is added, but is catalyzed by four valence states,
Because of catalytic action of the pi bond of ND to heavy metal ion, the ratio of the valence state of three valence states of the Ce elements in electrolyte/tetra- can be improved
Example, increases the concentration of Lacking oxygen；ND doping methods are but also electrolyte internal grain size is increased simultaneously.The two can be common
Increase the concentration of Lacking oxygen in electrolyte, improves the mobility of oxonium ion in the electrolyte；Simultaneously because the high hole of ND is moved
Shifting rate, high heat conductance can find that the impedance inside electrolytic cell reduces (high frequency stage) in AC impedance characterization, brilliant
The impedance on boundary increases (low frequency phase), that is, has high ionic mobility and low electron mobility.Its electronic impedance increases, and reduces
Internal electrical short leaky；The characteristics such as extremely low coefficient of thermal expansion and chemical stabilization, so being conducive to improve to electrolysis
The mechanical strength of matter piece.
Test indicate that present patent application is mainly by adulterating ND in SDC electrolytes, to make crystallite dimension
Increase, also increases cerium ion Ce simultaneously3+/Ce4+Ratio (that is, doping ND after increase cerium ion Ce3+Content).The two is total
With promoting oxygen vacancies concentration to increase, cause to increase ionic mobility, so as to cause the increase of monocell power.
Description of the drawings
Fig. 1 is the AC impedance figure of SDC electrolyte made from embodiment 1 and 4.
Fig. 2 is the XRD diagram of SDC/ND electrolyte made from SDC electrolyte made from embodiment 1 and 4 and embodiment 2 and 4.
Fig. 3 is the volt-ampere curve and power graph for the SOFC monocells that SDC is assembled into made from embodiment 1 and 4.
Fig. 4 is the TEM figures of the ND powder for doping in embodiment 2,3.
Fig. 5 is the AC impedance figure of SDC/ND composite electrolytes made from embodiment 2 and 4.
Fig. 6 is the AC impedance figure of SDC/2ND composite electrolytes made from embodiment 3 and 4.
Fig. 7 is cerium ion in SDC/ND electrolyte made from SDC electrolyte made from embodiment 1 and 4 and embodiment 2 and 4
XPS figure.
Fig. 8 is the volt-ampere curve and power diagram of the monocell of SDC/ND made from embodiment 2 and 4.
Specific implementation mode
Embodiment 1：The synthesis of SDC electrolyte powders.
Take 1.3080g samarium oxides (Sm2O3) it is added to 1.8ml nitric acid (HNO3) in, add deionized water to 50ml, this
When samarium ion (Sm3+) concentration is about 0.1503mol/L；Take 18.453g cerous nitrates (Ce (NO3)3·6H2O deionized water) is added extremely
200ml dissolves, at this time cerium ion (Ce3+) concentration is about 0.2126mol/L.Weigh 7.5123g glycine (C2H5NO2), it is sweet at this time
The amount of propylhomoserin is 2 times of metal ion moles total number.After samarium to be oxidized fully dissolves and glycine to be added to cerous nitrate together molten
In liquid, add deionized water to 600ml, at this time metal ion (including samarium ion Sm3+With cerium ion Ce3+) a concentration of
0.0833mol/L.The nitrate liquid that heating stirring aforementioned process obtains, makes samarium ion fully be doped into cerous nitrate solution,
Become thick liquid.Continue to be heated to detonation, then detonation product is put into 800 DEG C of high temperature sintering furnace and is calcined 4 hours, it is residual to make
The nitrate anion stayed is sold out, and is sufficiently formed metal oxide, and oxidation samarium doped ceria electrolytes (SDC) powder is made.
After high-temperature calcination, cerium ion has trivalent Ce3+With tetravalence phase Ce4+, i.e. Ce2O3And CeO2。
Last SDC powder qualities obtained are 8.6212g, wherein Sm2O3Quality is 1.3080g, CeO2And Ce2O3Quality is about
For 7.3132g.
Electrolyte is made in the SDC powders of the present embodiment as a control group, with following example 2,3 SDC/ND powders,
SDC/2ND powders are also made electrolyte and carry out performance comparison.The present embodiment prepares raw material drug and following reality used in SDC powders
Apply the raw material drug used in example 2,3 be identical producer, same size, same batch drug.
Embodiment 2：The synthesis of SDC and nano-diamond powder composite electrolyte powder (SDC/ND).
Take 1.3080g samarium oxides (Sm2O3) it is added to 1.8ml nitric acid (HNO3) in, add deionized water to 50ml, this
When samarium ion (Sm3+) concentration is about 0.1503mol/L；Take 18.453g cerous nitrates (Ce (NO3)3·6H2O deionized water) is added extremely
200ml dissolves, at this time cerium ion (Ce3+) concentration is about 0.2126mol/L.Weigh 7.5123g glycine (C2H5NO2), it is sweet at this time
The amount of propylhomoserin is 2 times of metal ion moles total number.After samarium to be oxidized fully dissolves and glycine to be added to cerous nitrate together molten
In liquid, add deionized water to 600ml, at this time metal ion (including samarium ion Sm3+With cerium ion Ce3+) a concentration of
0.0833mol/L.The nitrate liquid that heating stirring aforementioned process obtains, makes samarium ion fully be doped into cerous nitrate solution.
It is diamond (ND) powder that 5~6nm mass is 0.0862g that particle diameter, which is added, continues heating stirring, until becoming viscous fluid
Body.Continue to be heated to detonation, then detonation product is put into 800 DEG C of high temperature sintering furnace and is calcined 4 hours.To make remaining nitrate anion
It sells out, is sufficiently formed metal oxide, prepare the oxidation samarium doped ceria electrolytes powder for mixing nano-diamond powder
Body, the powder are denoted as SDC/ND.
Last SDC/ND powder qualities obtained are 8.7074g, wherein Sm2O3Quality is 1.3080g, CeO2And Ce2O3Matter
Amount is about 7.3132g, nano-diamond powder 0.0862g.
Embodiment 3：The synthesis of SDC and nano-diamond powder composite electrolyte powder (SDC/2ND).
For raw materials used and preparation process with embodiment 2, the nano-diamond powder being only added is 0.1724g, i.e. nanogold
Emery dosage is 2 times of embodiment 2.Equally prepare the oxidation samarium doped ceria electrolytes powder for mixing nano-diamond powder
Body, the powder are denoted as SDC/2ND.
Last SDC/ND powder qualities obtained are 8.7936g, wherein Sm2O3Quality is 1.3080g, CeO2And Ce2O3Matter
Amount is about 7.3132g, nano-diamond powder 0.1724g.
Embodiment 4：The preparation of SDC electrolyte, SDC/ND composite electrolytes and SDC/2ND composite electrolytes.
Three kinds of electrolyte are prepared using identical technique.Specific embodiment is, by electrolyte powder obtained elder generation
Carry out precompressed, pressure 0.6MPa, pressurize 1min.Then it grinds again, again tabletting, pressure 0.6MPa, pressurize 1min.
The electrolyte sheet pressed is sintered 4 hours for 1400 DEG C in high temperature sintering furnace.
XRD is carried out to SDC/ND composite electrolytes made from SDC electrolyte made from embodiment 1 and 4 and embodiment 2 and 4
(D/max-2550RigaKu Japan) is tested, and the results are shown in Figure 2.It can be found that its diffraction maximum is almost the same, illustrate ND's
Incorporation, does not change the perovskite structure of electrolyte.According to Scherrer formula and (111), (200), (220) and (311) diffraction maximum
Position, the SDC electrolyte average grain sizes that can be calculated for comparing are 44.3nm；And the SDC/ND compound electrics of the present invention
It is 71.5nm to solve matter average grain size, increases 50% or more.The increase of crystallite dimension can reduce intra-die impedance, increase
Its ionic mobility is conducive to transmission of the oxonium ion in SDC/ND composite electrolytes.
XPS is carried out to SDC/ND composite electrolytes made from SDC electrolyte made from embodiment 1 and 4 and embodiment 2 and 4
(ESCALAB 250Thermo Electron Corporation USA) is tested, and the results are shown in Figure 7.It can be found that cerium ion
That represented near 917eV is Ce4+, and that represented near 904eV to 899eV and 886eV to 881eV is Ce3+.It can be with
It was found that the difference between SDC electrolyte and SDC/ND composite electrolytes, after adulterating ND, three peak positions of Ce ions occur
It moves to left, and Ce3+The width at peak is all higher than the peak undoped with ND.Thus illustrate Ce3+/Ce4+Content ratio increase, cause oxygen empty
Cave concentration increases, and is conducive to transmission of the oxonium ion in SDC/ND composite electrolytes.Thus can also prove ND have to cerium from
The catalysis reduction of son.
Embodiment 5：The ac impedance measurement of SDC electrolyte, SDC/ND composite electrolytes and SDC/2ND composite electrolytes.
To SDC/ND composite electrolytes and embodiment made from SDC electrolyte made from embodiment 1 and 4 and embodiment 2 and 4
SDC/2ND composite electrolytes progress electrochemical workstation (SI1287&1260solartron UK) exchanges resistance made from 3 and 4
Anti- test.The both sides corresponding position of SDC electrolyte, SDC/ND composite electrolytes and SDC/2ND composite electrolytes is coated in silver paste,
As electrode collecting layer.Electrochemical workstation (SI1287&1260solartron UK) is attempted by with filamentary silver extraction to be exchanged
Testing impedance.Temperature can be made electrolyte internal and external temperature consistent, fully be activated current-carrying in this way using sequence from high to low when measurement
Sub- activity.Specific is respectively 800 DEG C, 750 DEG C, 700 DEG C and 650 DEG C.Ac impedance measurement result is respectively such as Fig. 1, Fig. 5 and Fig. 6
It is shown.
The right low dot location numerical value of initial semicircle represents the numerical value of ionic resistance.SDC electrolyte 800 DEG C, 750 DEG C,
700 DEG C and 650 DEG C of ionic resistance numerical value is respectively 9 Ω cm, 15 Ω cm, 24 Ω cm and 42 Ω cm, and SDC/ND combined electrolysis
Matter is respectively 3 Ω cm, 7 Ω cm, 10 Ω cm and 17 Ω cm in 800 DEG C, 750 DEG C, 700 DEG C and 650 DEG C of ionic resistance numerical value,
SDC/2ND composite electrolytes 800 DEG C, 750 DEG C, 700 DEG C and 650 DEG C of ionic resistance numerical value be respectively 4 Ω cm, 7 Ω cm,
12 Ω cm and 23A Ω cm.It can be seen that the AC impedance of SDC/ND composite electrolytes is significantly less than the exchange resistance of SDC electrolyte
It is anti-, again smaller than the AC impedance of SDC/2ND composite electrolytes.That is mobility of oxygen ion higher in SDC/ND composite electrolytes.
Since its electronic impedance increases, reduces internal electrical short and (be commonly called as leaking electricity) phenomenon.In AC impedance characterization, Ke Yifa
Impedance inside existing electrolytic cell reduces (high frequency stage), i.e., its ionic resistance is smaller.The impedance of crystal boundary increases (low frequency rank
Section), i.e., its electronic impedance is larger.So the SDC/ND electrolyte of the art of this patent has high ionic mobility and low electron transfer
Rate.It is tested through ac impedance spectroscopy, it is found that the ionic conductivity of SDC/ND composite electrolytes is better than SDC/2ND composite electrolytes.
Embodiment 6：The preparation and test of monocell.
Cathode material is LaNiO3Material, air is as cathode oxidation gas；Anode material is NiO-SDC mixing materials,
Hydrogen is as anode fuel gas.SDC/ND made from SDC electrolyte made from embodiment 1 and 4 and embodiment 2 and 4 is compound
Electrolyte is assembled into SOFC monocells respectively.
Linear volt-ampere curve survey is carried out to above-mentioned two SOFC monocells with electrochemical workstation (occasion China of CH614D China)
Examination.Measuring temperature is using sequentially, the NiO in such anode material NiO-SDC can fully be reduced into Ni from high to low.It is specific to measure
Operating temperature is 800 DEG C, 750 DEG C, 700 DEG C, 600 DEG C and 500 DEG C, then obtains power curve by calculating.By SDC assemblings
SOFC monocells and by SDC/ND assembling SOFC monocells linear volt-ampere curve and power curve respectively such as Fig. 3 and Fig. 8 institutes
Show.In 800 DEG C of operating temperatures, 319mW/cm is only reached by the power of the SOFC monocells of SDC assemblings2, and by SDC/ND groups
The power of the SOFC monocells of dress can reach 762mW/cm2, the power of the latter's monocell is the former 2.4 times.And medium temperature region,
The power of SDC/ND monocells is also apparently higher than the power of SDC/ND monocells.By the power of the SOFC monocells of SDC/ND assemblings
It is the important technology index for weighing SOFC performances.
Claims (6)
1. a kind of oxidation samarium doped ceria electrolytes for mixing nano-diamond powder, which is characterized in that component has Sm2O3、CeO2、
Ce2O3And nano-diamond powder；Nano-diamond powder accounts for Sm2O3、CeO2And Ce2O3The 1%~2% of quality sum；The nanometer
Bortz powder, particle diameter are 4~10nm.
2. the oxidation samarium doped ceria electrolytes according to claim 1 for mixing nano-diamond powder, which is characterized in that group
Sm in point2O3With CeO2And Ce2O3The sum of mass ratio be 1: 5.57~5.60.
3. a kind of preparation method of the oxidation samarium doped ceria electrolytes for mixing nano-diamond powder of claim 1, first will
Samarium oxide is dissolved in the nitric acid of stoichiometry and samaric nitrate is made in water, adds six nitric hydrate ceriums, glycine and water mixing, adds
Thermal agitation obtains nitrate liquid, and the wherein mass ratio of samarium oxide, six nitric hydrate ceriums and water is 1: 14.10~14.11: 160
~200；It is characterized in that, again by particle diameter be 4~10nm bortz powder in nitrate liquid, be heated with stirring to sticky
It is further continued for heating up after shape, until detonation occurs；800 DEG C of 4 hours of calcining are carried out to detonation product, obtain mixing nano-diamond powder
Oxidation samarium doped ceria electrolytes powder；Electrolyte sheet finally is made with dry pressing, 4 hours are sintered at 1400 DEG C,
Obtain mixing the oxidation samarium doped ceria electrolytes of nano-diamond powder；Wherein the addition of bortz powder is oxidation by mass
0.0659~0.1318 times of samarium, glycine dosage is by 2 times that molar amount is samarium ion and cerium ion summation.
4. the preparation method of the oxidation samarium doped ceria electrolytes according to claim 3 for mixing nano-diamond powder,
It is characterized in that, the bortz powder, particle diameter is 5~6nm.
5. the preparation method of the oxidation samarium doped ceria electrolytes according to claim 3 or 4 for mixing nano-diamond powder,
It is characterized in that, the addition of bortz powder is 0.0659 times of samarium oxide by mass.
6. the preparation method of the oxidation samarium doped ceria electrolytes according to claim 3 or 4 for mixing nano-diamond powder,
It is characterized in that, electrolyte sheet is made in the dry pressing, it is by the oxidation samarium doping oxidation obtained for mixing nano-diamond powder
Cerium electrolyte powder first carries out precompressed, pressure 0.6MPa, pressurize 1min；Then it grinds, again tabletting, pressure is
0.6MPa, pressurize 1min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1823444A (en) * | 2003-07-14 | 2006-08-23 | 株式会社藤仓 | Electrolyte compositon, photoelectric converter and dye-sensitized solar cell using same |
| CN101271981A (en) * | 2007-03-23 | 2008-09-24 | 中国科学院大连化学物理研究所 | Low temperature solid-oxide fuel battery three-in-one component MEA and preparation thereof |
| CN101540411A (en) * | 2009-04-15 | 2009-09-23 | 中国科学院上海硅酸盐研究所 | Solid electrolyte direct carbon fuel cell |
-
2016
- 2016-06-20 CN CN201610439308.5A patent/CN105895945B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1823444A (en) * | 2003-07-14 | 2006-08-23 | 株式会社藤仓 | Electrolyte compositon, photoelectric converter and dye-sensitized solar cell using same |
| CN101271981A (en) * | 2007-03-23 | 2008-09-24 | 中国科学院大连化学物理研究所 | Low temperature solid-oxide fuel battery three-in-one component MEA and preparation thereof |
| CN101540411A (en) * | 2009-04-15 | 2009-09-23 | 中国科学院上海硅酸盐研究所 | Solid electrolyte direct carbon fuel cell |
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