JPH0220571B2 - - Google Patents
Info
- Publication number
- JPH0220571B2 JPH0220571B2 JP60126447A JP12644785A JPH0220571B2 JP H0220571 B2 JPH0220571 B2 JP H0220571B2 JP 60126447 A JP60126447 A JP 60126447A JP 12644785 A JP12644785 A JP 12644785A JP H0220571 B2 JPH0220571 B2 JP H0220571B2
- Authority
- JP
- Japan
- Prior art keywords
- bismuth
- yttrium oxide
- oxide
- compound
- layered structure
- 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.)
- Expired - Lifetime
Links
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 13
- NVCDHVHXNUHYTG-UHFFFAOYSA-N bismuth oxygen(2-) yttrium(3+) Chemical compound [O--].[O--].[O--].[Y+3].[Bi+3] NVCDHVHXNUHYTG-UHFFFAOYSA-N 0.000 claims description 10
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 8
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 claims description 6
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 6
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- -1 oxygen ion Chemical class 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000010416 ion conductor Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910052797 bismuth Inorganic materials 0.000 description 5
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 238000000634 powder X-ray diffraction Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910000953 kanthal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010027476 Metastases Diseases 0.000 description 1
- 241000255969 Pieris brassicae Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000004455 differential thermal analysis Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009401 metastasis Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
-
- 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)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Fuel Cell (AREA)
Description
産業上の利用分野
本発明は、新規化合物であるBi2-2XY2XO3（Ｘ
＝0.215〜0.235）で示される六方晶系の層状構造
を有する化合物およびその製造法に関する。更に
詳しくは酸素イオン伝導体として有用なものであ
り、酸素センサー、燃料電池、酸素ポンプ等への
応用が期待される新規化合物およびその製造法に
関する。
従来技術
従来、六方晶系の層状構造を有する酸化物とし
て、一般式Bi1-XMXO1.5-X/2またはBi2-2XR2xO3で
表わされる固溶体が知られている。ＭはCa2+，
Sr2+またはBa2+であり、ＲはLa3+，Pr3+，，
Nd3+，Sm3+等のイオン半径の大なる希土類イオ
ンである。該酸化物は、六方晶系に属する層状構
造を有しており、層間に存在する酸素の移動に起
因する酸素イオン伝導体であることも知られてい
る。これら公知の六方晶系の層状構造を有する酸
化物のうち、代表例とみなされる
Bi0.870Ca0.130O1.435
Bi0.765Sr0.235O1.385
Bi0.844Ba0.156O1.422
の結晶学的ならびに物理学的データを第１表に、
また粉末Ｘ線回折の結果をBi0.8Ba0.1O1.3の場合
について第２表に示す。
Industrial Application Field The present invention is directed to a novel compound Bi 2-2X Y 2X O 3 (X
The present invention relates to a compound having a hexagonal layered structure represented by (=0.215 to 0.235) and a method for producing the same. More specifically, the present invention relates to a novel compound that is useful as an oxygen ion conductor and is expected to be applied to oxygen sensors, fuel cells, oxygen pumps, etc., and a method for producing the same. Prior Art Conventionally, solid solutions represented by the general formula Bi 1-X M X O 1.5-X/2 or Bi 2-2X R 2x O 3 are known as oxides having a hexagonal layered structure. M is Ca 2+ ,
Sr 2+ or Ba 2+ , R is La 3+ , Pr 3+ , ,
These are rare earth ions with large ionic radii such as Nd 3+ and Sm 3+ . This oxide has a layered structure belonging to a hexagonal system, and is also known to be an oxygen ion conductor due to the movement of oxygen present between the layers. Among these known oxides having a hexagonal layered structure, Bi 0 . 870 Ca 0 . 130 O 1 . 435 Bi 0 . 765 Sr 0 . 235 O 1 . 385 Bi 0 . 844 Ba is considered a representative example. The crystallographic and physical data of 0.156 O 1.422 are shown in Table 1 .
Further , the results of powder X-ray diffraction are shown in Table 2 for the case of Bi 0.8 Ba 0.1 O 1.3 .
【表】
いずれも六方晶系に属している。
[Table] All belong to the hexagonal crystal system.
【表】
発明の目的
本発明の目的は、酸素イオン伝導体材料として
有用なる新規化合物ビスマス・イツトリウム酸化
物およびその製造法を提供するにある。
発明の構成
本発明のビスマス・イツトリウム酸化物は、一
般式Bi2-2XY2XO3（Ｘ＝0.215〜0.235）で示される
固溶体である。この固溶領域内のいくつかの組成
について、粉末Ｘ線回折の結果から得られた格子
定数を第３表に示す。[Table] Object of the Invention The object of the present invention is to provide a new compound bismuth yttrium oxide useful as an oxygen ion conductor material and a method for producing the same. Structure of the Invention The bismuth-yttrium oxide of the present invention is a solid solution represented by the general formula Bi 2-2X Y 2X O 3 (X=0.215 to 0.235). Table 3 shows the lattice constants obtained from powder X-ray diffraction results for several compositions within this solid solution region.
【表】
また、組成がＸ＝0.225であるBi1.55Y0.45O3に
おける粉末Ｘ線回折パターンを、面指数（hkl）、
実測面間隔および相対強度の順に第４表に示す。[Table] In addition, the powder X-ray diffraction pattern of Bi 1 . 55 Y 0 . 45 O 3 with a composition of X = 0.225 is expressed as
Table 4 shows the measured surface spacing and relative strength in order.
【表】【table】
【表】
第２表ならびに第４表を比較対照することから
明らかなように、本発明における新規な化合物
Bi2-2XY2XO3（Ｘ＝0.215〜0.235）は、公知の化合
物Bi1-XMXO1.5-X/2あるいはBi2-2XR2XO3と同様、
空間群がＲ３ｍに属する六方晶の層状構造である
ことが判明した。したがつて、本発明における新
規な化合物Bi2-2XY2XO3（Ｘ＝0.215〜0.235）は、
公知の化合物Bi2-2XR2XO3中のすべてのＲがＹで
置換された層状構造であることが明らかである。
第１図にBi2-2XY2XO3（Ｘ＝0.215〜0.235）の結晶
構造を示す。大きな白丸は酸素を、小さな黒丸は
ビスマスとイツトリウムを、小さな白丸はビスマ
スを示している。細線で示した平行六面体は六方
晶系の単位格子を示す。黒丸で示されたビスマス
とイツトリウムは無秩序に分布しており、層内に
ある８個の酸素に囲まれている。小さな丸で示さ
れたビスマスは、層内にある４個の酸素に配位し
ている。図には示されていないが、位置の特定化
できぬ酸素が空白で示された層間に存在してお
り、この酸素が伝導に寄与している。
本発明の六方晶系の層状構造を有するビスマ
ス・イツトリウム酸化物Bi2-2XY2XO3（Ｘ＝0.215
〜0.235）は、酸素イオン伝導体として有用なも
のであり、酸素センサー、燃料電池、酸素ポンプ
等への応用が期待される。
本発明における新規ビスマス・イツトリウム酸
化物の組成がＸ＝0.235であるBi1.53Y0.47O3の電
気伝導度は600℃で10-2.4Ω-1cm-1であり、イツト
リウム安定化ジルコニア（ZrO2）0.9（Y2O3）0.1に
匹敵するものであつた。
本発明の六方晶系の層状構造を有するビスマ
ス・イツトリウム酸化物Bi2-2XY2XO3（Ｘ＝0.215
〜0.235）は、次の方法によつて製造し得られる。
酸化ビスマス（Bi2O3）もしくは、加熱される
ことにより酸化ビスマス（Bi2O3）に分解される
化合物と、酸化イツトリウム（Y2O3）もしくは、
加熱されることにより分解されて酸化イツトリウ
ム（Y2O3）を生ずる化合物とを、酸化イツトリ
ウム（Y2O3）の割合が21.5〜23.5モル％になるよ
うに混合して、720℃以下の温度で大気中で加熱
することによつて製造することができる。
本発明の六方晶系の層状構造を有するビスマ
ス・イツトリウム酸化物Bi2-2XY2XO3（Ｘ＝0.215
〜0.235）は、第２図に示すように約720℃で容易
に相転移を起こし面心立方晶の結晶構造をもつ
が、この立方晶の構造は720℃以下にもたらして
も六方晶へは容易に転移せず、その転移速度は非
常に緩慢である。したがつて、720℃より高い温
度にもたらすと目的とする六方晶系のビスマス・
イツトリウム酸化物を得ることはできない。
本発明の新規化合物は従来のBi1-XMXO1.5-X/2，
及びBi2-2XR2XO3とは、前記720℃以上では六方晶
系の層状構造から面心立方晶系の結晶構造へ相転
移する点で、その様相を異にしている。
実施例
純度99.9％以上の酸化ビスマス（Bi2O3）粉末
と純度99.9％以上の酸化イツトリウム（Y2O3）
粉末とを酸化イツトリウムの割合が21.5〜23.5モ
ル％となるように秤量し、メノウ乳鉢中でエタノ
ールを加えて充分に混合し、平均粒径44μ以下の
微粉末混合物を得た。
当該混合物の白金ルツボにそう入し、カンタル
線発熱体竪型電気炉中に静置し、室温から加温を
はじめ、当該ルツボが650℃に達したのち、当該
電気炉をこの温度に保つた。90時間後、当該ルツ
ボを当該電気炉から取り出し、当該新規ビスマ
ス・イツトリウム酸化物Bi2-2XY2XO3（Ｘ＝0.215
〜0.235）を製造した。
また、当該新規Bi2-2XY2XO3（Ｘ＝0.215〜
0.235）を炭化タングステン製の金型を用いて、
円板状圧縮体に成型した後、当該成型体を白金ル
ツボ中に静置し、カンタル線発熱体竪型電気炉中
で650℃で24時間仮焼し、円板状焼結体を得た。
当該焼結円板の両面に銀ペーストを塗付して電極
としたのち、直流二端子法によつて電気抵抗を測
定し、当該測定値から電気伝導度を算出した。
当該焼結体円板の温度変化に伴う、電気伝導度
の変化を第３図に示す。すなわち、当該曲線では
温度上昇とともに電気伝導度も増加しており、そ
の傾向ならびに電気伝導度の値も公知の六方晶系
の層状構造を有する酸素イオン伝導体について報
告されたものと類似しており、とりわけ第１表に
示したBi0.87Ca0.13O1.435の場合と同等であつた。
したがつて、本発明における新規の六方晶系の層
状構造を有するビスマス・イツトリウム酸化物
Bi2-2XY2XO3（Ｘ＝0.215〜0.235）も酸素イオン伝
導体であることがわかる。
発明の効果
本発明は酸素イオン伝導体として有用な新規物
質を提供し得た優れた効果を奏し得られる。[Table] As is clear from comparing and contrasting Tables 2 and 4, the novel compounds of the present invention
Bi 2-2X Y 2X O 3 (X = 0.215 to 0.235) is similar to the known compound Bi 1-X M X O 1.5-X/2 or Bi 2-2X R 2X O 3 ,
It was found that it had a hexagonal layered structure belonging to the space group R3m. Therefore, the novel compound Bi 2-2X Y 2X O 3 (X=0.215-0.235) in the present invention is
It is clear that the known compound Bi 2-2X R 2X O 3 has a layered structure in which all R's are substituted with Y.
FIG. 1 shows the crystal structure of Bi 2-2X Y 2X O 3 (X=0.215-0.235). The large white circle represents oxygen, the small black circle represents bismuth and yttrium, and the small white circle represents bismuth. The parallelepiped shown by thin lines indicates a hexagonal unit cell. Bismuth and yttrium, shown as black circles, are randomly distributed and surrounded by eight oxygen atoms within the layer. Bismuth, shown as a small circle, coordinates to four oxygen atoms within the layer. Although not shown in the figure, oxygen, whose location cannot be specified, is present between the blank layers and contributes to conduction. Bismuth yttrium oxide Bi 2-2X Y 2X O 3 (X=0.215
~0.235) is useful as an oxygen ion conductor, and is expected to be applied to oxygen sensors, fuel cells, oxygen pumps, etc. The electrical conductivity of Bi 1 . 53 Y 0 . 47 O 3 whose composition is X = 0.235 of the new bismuth-yttrium oxide in the present invention is 10 -2.4 Ω -1 cm -1 at 600°C, and it is yttrium stabilized. It was comparable to zirconia (ZrO 2 ) 0.9 ( Y 2 O 3 ) 0.1 . Bismuth yttrium oxide Bi 2-2X Y 2X O 3 (X=0.215
~0.235) can be produced by the following method. Bismuth oxide (Bi 2 O 3 ) or a compound that decomposes into bismuth oxide (Bi 2 O 3 ) when heated, and yttrium oxide (Y 2 O 3 ) or
A compound that decomposes when heated to produce yttrium oxide (Y 2 O 3 ) is mixed so that the proportion of yttrium oxide (Y 2 O 3 ) is 21.5 to 23.5 mol%, and the mixture is heated at 720°C or lower. It can be produced by heating in air at a temperature. Bismuth yttrium oxide Bi 2-2X Y 2X O 3 (X=0.215
~0.235) easily undergoes a phase transition at approximately 720°C and has a face-centered cubic crystal structure, as shown in Figure 2, but this cubic structure does not change to a hexagonal crystal even if brought to temperatures below 720°C. It does not metastasize easily and its rate of metastasis is very slow. Therefore, hexagonal bismuth crystals intended to be brought to temperatures higher than 720°C.
Yttrium oxide cannot be obtained. The new compound of the present invention has the conventional Bi 1-X M X O 1.5-X/2 ,
and Bi 2-2X R 2X O 3 are different from each other in that at temperatures above 720° C., the phase transition occurs from a hexagonal layered structure to a face-centered cubic crystal structure. Example Bismuth oxide (Bi 2 O 3 ) powder with a purity of 99.9% or more and yttrium oxide (Y 2 O 3 ) with a purity of 99.9% or more
The powder was weighed so that the proportion of yttrium oxide was 21.5 to 23.5 mol %, and ethanol was added and thoroughly mixed in an agate mortar to obtain a fine powder mixture with an average particle size of 44 μm or less. The mixture was placed in a platinum crucible, placed in a vertical electric furnace with a Kanthal wire heating element, heated from room temperature, and after the crucible reached 650°C, the electric furnace was kept at this temperature. . After 90 hours, the crucible was taken out from the electric furnace and the new bismuth-yttrium oxide Bi 2-2X Y 2X O 3 (X=0.215
~0.235) was produced. In addition, the new Bi 2-2X Y 2X O 3 (X=0.215~
0.235) using a tungsten carbide mold,
After molding into a disc-shaped compressed body, the molded body was placed in a platinum crucible and calcined at 650°C for 24 hours in a vertical electric furnace with a Kanthal wire heating element to obtain a disc-shaped sintered body. .
After applying silver paste to both sides of the sintered disk to make an electrode, the electrical resistance was measured by the DC two terminal method, and the electrical conductivity was calculated from the measured value. FIG. 3 shows changes in electrical conductivity with changes in temperature of the sintered disk. That is, in this curve, the electrical conductivity increases as the temperature rises, and the trend and electrical conductivity values are similar to those reported for known oxygen ion conductors with a hexagonal layered structure. In particular, it was equivalent to the case of Bi 0 . 87 Ca 0 . 13 O 1 .435 shown in Table 1.
Therefore, the bismuth yttrium oxide having a novel hexagonal layered structure in the present invention
It can be seen that Bi 2-2X Y 2X O 3 (X=0.215 to 0.235) is also an oxygen ion conductor. Effects of the Invention The present invention has the excellent effect of providing a new substance useful as an oxygen ion conductor.
第１図は、本発明のBi2-2XY2XO3（Ｘ＝0.215〜
0.235）の結晶構造を示す。第２図は、本発明の
Bi2-2XY2XO3（Ｘ＝0.215〜0.235）の示差熱分析曲
線を示す。第３図は、本発明のBi2-2XY2XO3（Ｘ
＝0.215〜0.235）の温度−電気伝導度曲線を示
す。
FIG. 1 shows Bi 2-2X Y 2X O 3 (X=0.215~
0.235) is shown. Figure 2 shows the present invention.
The differential thermal analysis curve of Bi2-2XY2XO3 (X = 0.215-0.235) is shown. Figure 3 shows Bi 2-2X Y 2X O 3 (X
= 0.215 to 0.235).
Claims (1)
される六方晶系の層状構造を有するビスマス・イ
ツトリウム酸化物。 ２ 酸化ビスマス（Bi2O3）もしくは、加熱され
ることにより酸化ビスマス（Bi2O3）に分解され
る化合物と、酸化イツトリウム（Y2O3）もしく
は、加熱されることにより分解されて酸化イツト
リウム（Y2O3）を生ずる化合物とを酸化イツト
リウム（Y2O3）の割合が21.5〜23.5モル％になる
ように混合して、720℃以下の温度で大気中で加
熱することを特徴とするBi2-2XY2XO3（Ｘ＝0.215
〜0.235）で示される六方晶系の層状構造を有す
るビスマス・イツトリウム酸化物の製造法。 ３ 一般式Bi2-2XY2XO3（Ｘ＝0.215〜0.235）で示
される六方晶系の層状構造を有するビスマス・イ
ツトリウム酸化物からなる酸素イオン伝導材料。[Claims] 1. A bismuth yttrium oxide having a hexagonal layered structure represented by the general formula Bi 2-2X Y 2X O 3 (X=0.215-0.235). 2 Bismuth oxide (Bi 2 O 3 ) or a compound that decomposes into bismuth oxide (Bi 2 O 3 ) when heated, and yttrium oxide (Y 2 O 3 ), or a compound that decomposes into bismuth oxide (Bi 2 O 3 ) when heated. It is characterized by mixing a compound that produces yttrium (Y 2 O 3 ) so that the proportion of yttrium oxide (Y 2 O 3 ) is 21.5 to 23.5 mol%, and heating it in the air at a temperature of 720°C or less. Bi 2-2X Y 2X O 3 (X=0.215
~0.235) A method for producing bismuth yttrium oxide having a hexagonal layered structure. 3. An oxygen ion conductive material made of bismuth-yttrium oxide having a hexagonal layered structure represented by the general formula Bi 2-2X Y 2X O 3 (X=0.215-0.235).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60126447A JPS61286223A (en) | 1985-06-11 | 1985-06-11 | Bismuth yttrium oxide Bi↓2−↓2↓xY↓2↓xO↓3 (X=0.215 to 0.235) having a hexagonal layered structure and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60126447A JPS61286223A (en) | 1985-06-11 | 1985-06-11 | Bismuth yttrium oxide Bi↓2−↓2↓xY↓2↓xO↓3 (X=0.215 to 0.235) having a hexagonal layered structure and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61286223A JPS61286223A (en) | 1986-12-16 |
| JPH0220571B2 true JPH0220571B2 (en) | 1990-05-09 |
Family
ID=14935438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60126447A Granted JPS61286223A (en) | 1985-06-11 | 1985-06-11 | Bismuth yttrium oxide Bi↓2−↓2↓xY↓2↓xO↓3 (X=0.215 to 0.235) having a hexagonal layered structure and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61286223A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE218758T1 (en) * | 1989-12-27 | 2002-06-15 | Standard Oil Co | COMPONENTS FOR ELECTROCHEMICAL CELLS AND THEIR USE IN OXYGEN SEPARATION |
| JP5227733B2 (en) * | 2008-10-15 | 2013-07-03 | 東罐マテリアル・テクノロジー株式会社 | Bismuth oxide additive for laser marking and method for producing the same |
-
1985
- 1985-06-11 JP JP60126447A patent/JPS61286223A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61286223A (en) | 1986-12-16 |
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