JP3403055B2 - Oxygen side electrode - Google Patents
Oxygen side electrodeInfo
- Publication number
- JP3403055B2 JP3403055B2 JP05930398A JP5930398A JP3403055B2 JP 3403055 B2 JP3403055 B2 JP 3403055B2 JP 05930398 A JP05930398 A JP 05930398A JP 5930398 A JP5930398 A JP 5930398A JP 3403055 B2 JP3403055 B2 JP 3403055B2
- Authority
- JP
- Japan
- Prior art keywords
- side electrode
- oxygen
- solid electrolyte
- fuel cell
- specimen
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、固体電解質燃料電
池や水蒸気電解セルの酸素側電極に関する。
【０００２】
【従来の技術】酸素や空気などの酸化ガスと水素などの
燃料ガスとを電気化学的に反応させて電力を得る固体電
解質燃料電池は、図６に示すように、固体電解質１を多
孔質の酸素側電極（空気側電極）２および燃料側電極３
で挟んでセルを構成し、このセルを導電性波板４，５で
挟むことにより酸化ガス１０１および燃料ガス１０２の
流路を形成し、さらにインタコネクタ６，７で挟むこと
により、上記各ガス１０１，１０２の流通に伴って各電
極２，３から上記波板４，５を介して流れる電気をイン
タコネクタ６，７を介して外部に取り出せる構造となっ
ている。
【０００３】このような固体電解質燃料電池において、
前記酸素側電極２は、高い導電性を有し、固体電解
質１の材料であるＹＳＺ（イットリア安定化ジルコニ
ア）との密着性がよく、使用環境である１０００℃の
空気雰囲気下でも安定性を維持できることが要求される
ことから、ＬＳＭ（ランタンストロンチウムマンガン酸
化物：Ｌａ1-x Ｓｒx ＭｎＯ3 ）とＹＳＺとの混合物が
使用されている。すなわち、ＬＳＭにより空気雰囲気下
における高導電性能を発現させ、ＹＳＺにより酸素イオ
ン導電性を発現させ、ＬＳＭとＹＳＺとを混合すること
により固体電解質１との焼き付け性を向上させているの
である。
【０００４】
【発明が解決しようとする課題】しかしながら、ＬＳＭ
とＹＳＺとの混合物を用いた酸素側電極２は、固体電解
質燃料電池の長期運転に伴い、低耐熱性のため、シン
タリングにより粒成長を生じて比表面積が低下してしま
ったり、固体電解質１と反応してＬａ2 Ｚｒ2Ｏ7 な
どのような絶縁体を形成して導電率が低下してしまい、
固体電解質燃料電池の発電性能の低下を引き起こして安
定した発電が困難となってしまう場合があった。
【０００５】このような問題は、固体電解質燃料電池の
酸素側電極（空気側電極）２に限らず、当該燃料電池と
同様な構造をなす水蒸気電解セルの酸素側電極でも上述
と同様に生じていた。
【０００６】そこで、本発明は、固体電解質燃料電池や
水蒸気電解セルなどの長期使用に伴う発電性能の低下を
抑制することができる酸素側電極を提供することを目的
とした。
【０００７】
【課題を解決するための手段】前述した課題を解決する
ための、本発明による酸素側電極は、固体電解質燃料電
池または水蒸気電解セルに用いられる酸素側電極であっ
て、イットリア安定化ジルコニアと（Ｐｒ (1-x) Ｓ
ｒ x ） y ＭｎＯ 3 （ただし、０．１≦ｘ≦０．４、１．
０＜ｙ≦１．０５）からなるペロブスカイト型酸化物と
の混合物を用いてなることを特徴とする。
【０００８】
【０００９】
【発明の実施の形態】本発明による酸素側電極を固体電
解質燃料電池に適用した場合の実施の形態を図１を用い
て説明する。なお、図１は、その要部の概略構造図であ
る。ただし、前述した従来の技術で説明した部分と同様
な部分については、前述した従来の技術の説明で用いた
符号等と同様な符号等を用いることにより、その説明を
省略する。
【００１０】図１において、１２は多孔質の酸素側電極
（空気側電極）であり、ＹＳＺ（イットリア安定化ジル
コニア）とＰＳＭ（プラセオジミウムストロンチウムマ
ンガン酸化物：（Ｐｒ (1-x) Ｓｒ x ） y ＭｎＯ 3 （ただ
し、０．１≦ｘ≦０．４、１．０＜ｙ≦１．０５））か
らなるペロブスカイト型酸化物との混合物を用いてい
る。
【００１１】このような酸素側電極１２においては、Ｙ
ＳＺ（７０〜９０wt％）とペロブスカイト型酸化物（１
０〜３０wt％）とを混合し、これら粉体の分散性を向上
させる有機溶媒（例えば、ブチルカルビトール、テレピ
ン油、ブタノール等）を加えてロールミルでペースト状
に混練して固体電解質１にスクリーン印刷法で塗布した
後に焼き付け処理を行うことにより、容易に製造するこ
とができる。
【００１２】このような酸素側電極１２を用いた固体電
解質燃料電池では、長期運転を行っても、当該酸素側電
極１２の比表面積や導電率が低下することはない。
【００１３】したがって、上記酸素側電極１２を用いた
固体電解質燃料電池によれば、長期運転による発電性能
の低下を抑制することができるので、安定した発電を長
期にわたって行うことができる。
【００１４】なお、本実施の形態では、固体電解質燃料
電池に適用した場合について説明したが、当該燃料電池
と同様な構造をなす水蒸気電解セルにも上述と同様に適
用することができる。
【００１５】
【実施例】前述した実施の形態の効果を確認するため、
次のような確認実験を行った。
【００１６】［確認実験１：出力密度および界面抵抗］
＜試験体の製作＞前述した実施の形態に基づいて、固体
電解質を燃料側電極と酸素側電極とで挟んだセルを下記
の条件でそれぞれ製作して試験体を得た。
【００１７】
《試験体条件》
・固体電解質−材料：ＹＳＺ
サイズ：２３ｍｍφ、厚さ２５０μｍ
・燃料側電極−材料：ＮｉＯ／ＹＳＺ＝７０／３０
サイズ：１０ｍｍφ
・酸素側電極−材料：（Ｐｒ(1-x) Ｓｒx ）y ＭｎＯ3 ／ＹＳＺ＝８０／２０
ただし、ｘは0 , 0.05, 0.1 , 0.2 , 0.3 , 0.4 ,0.45,
0.5 , 0.6 の計９種類、
ｙは１．０２のみ
【００１８】＜実験方法＞上述した条件で製作した各試
験体の出力密度および界面抵抗をそれぞれ測定した。
【００１９】＜実験結果＞結果を図２に示す。図２から
わかるように、ｘが０．１以上０．４以下の場合には、
出力密度が１．３Ｗ／ｃｍ2 以上となり、界面抵抗が
０．９Ω・ｃｍ2 となった。よって、０．１≦ｘ≦０．
４であると、良好な結果を得られることが確認できた。
【００２０】［確認実験２：比表面積］
＜試験体の製作＞（Ｐｒ(1-x) Ｓｒx ）y ＭｎＯ3 （た
だし、ｘは0.1 , 0.2 , 0.3 , 0.4 の計４種類、ｙは1.
00 , 1.01 , 1.02 , 1.03 , 1.04 ,1.05 , 1.06 の計７
種類）の原料粉末をアルコキシド法によりそれぞれ合成
して試験体（総計２８種類）を得た。
【００２１】＜実験方法＞上記試験体（２８種類）をそ
れぞれ熱処理（１２００℃×１０時間）した後に比表面
積をそれぞれ測定した。
【００２２】＜実験結果＞結果を図３に示す。図３から
わかるように、ｙが１．００を越えると、比表面積が１
ｍ2 ／ｇ以上となった。一方、ｙが１．０５を越える
と、ペロブスカイトの定比からのずれが大きくなって不
純物相が認められるようになってしまう。よって、１．
００＜ｙ≦１．０５であると、良好な結果を得られるこ
とが確認できた。
【００２３】［確認実験３：比表面積の比較］
＜試験体および比較体の製作＞（Ｐｒ0.6 Ｓｒ0.4)1.03
ＭｎＯ3 の原料粉末をアルコキシド法によりそれぞれ合
成して試験体を得ると共に、（Ｌａ0.8 Ｓｒ0.2)ＭｎＯ
3 の原料粉末から比較体を得た。
【００２４】＜実験方法＞上記試験体および比較体をそ
れぞれ熱処理（１２００℃×１０時間）し、比表面積の
経時的な変化をそれぞれ求めた。
【００２５】＜実験結果＞結果を図４に示す。図４から
わかるように、比較体は、時間の経過に伴って、比表面
積が著しく小さくなっててしまうものの、試験体は、時
間が経過しても、比表面積がほとんどかわらず、当初の
大きさを維持できることが確認できた。
【００２６】［確認実験４：出力電流の比較］
＜試験体および比較体の製作＞固体電解質を燃料側電極
と酸素側電極とで挟んだセルを下記の条件でそれぞれ製
作して試験体および比較体を得た。
【００２７】《試験体条件》
・固体電解質：８ｍｏｌ％Ｙ2 Ｏ3 安定化ジルコニア
（厚さ１００μｍ）
・燃料側電極：ＮｉＯとＹＳＺとの混合物
・酸素側電極：（Ｐｒ0.6 Ｓｒ0.4)1.03ＭｎＯ3 とＹＳ
Ｚとの混合物
【００２８】《比較体条件》
・固体電解質：試験体と同一
・燃料側電極：試験体と同一
・酸素側電極：（Ｌａ0.8 Ｓｒ0.2)ＭｎＯ3 とＹＳＺと
の混合物
【００２９】＜実験方法＞１０００℃の温度環境下での
０．７Ｖの出力電圧における上記試験体および比較体の
出力電流の経時的な変化をそれぞれ測定した。
【００３０】＜実験結果＞結果を図５に示す。図５から
わかるように、比較体は、時間の経過に伴って、出力電
流が次第に小さくなっててしまうものの、試験体は、時
間が経過しても、出力電流がほとんどかわらず、当初の
大きさを維持できることが確認できた。
【００３１】
【発明の効果】本発明による酸素側電極は、固体電解質
燃料電池または水蒸気電解セルに用いられる酸素側電極
であって、イットリア安定化ジルコニアと（Ｐｒ (1-x)
Ｓｒ x ） y ＭｎＯ 3 （ただし、０．１≦ｘ≦０．４、
１．０＜ｙ≦１．０５）からなるペロブスカイト型酸化
物との混合物を用いてなるので、例えば、固体電解質燃
料電池に適用した場合に当該燃料電池を長期運転して
も、比表面積や導電率の低下を抑制することができる。
このため、長期運転による発電性能の低下を抑制するこ
とができ、安定した発電を長期にわたって行うことがで
きる。
【００３２】Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen electrode of a solid oxide fuel cell or a steam electrolysis cell. 2. Description of the Related Art A solid electrolyte fuel cell which obtains electric power by electrochemically reacting an oxidizing gas such as oxygen or air with a fuel gas such as hydrogen as shown in FIG. Porous oxygen-side electrode (air-side electrode) 2 and fuel-side electrode 3
A cell is formed by sandwiching the cells with conductive corrugated plates 4 and 5 to form a flow path for the oxidizing gas 101 and the fuel gas 102. The structure is such that electricity flowing from the electrodes 2 and 3 through the corrugated plates 4 and 5 with the circulation of 101 and 102 can be taken out through the interconnectors 6 and 7 to the outside. In such a solid electrolyte fuel cell,
The oxygen-side electrode 2 has high conductivity, has good adhesion to YSZ (yttria-stabilized zirconia), which is a material of the solid electrolyte 1, and maintains stability even in a use environment of an air atmosphere at 1000 ° C. Since it is required to be able to do so, a mixture of LSM (lanthanum strontium manganese oxide: La 1-x Sr x MnO 3 ) and YSZ is used. That is, the high conductivity performance in an air atmosphere is expressed by LSM, the oxygen ion conductivity is expressed by YSZ, and the baking property with the solid electrolyte 1 is improved by mixing LSM and YSZ. [0004] However, the LSM
Oxygen-side electrode 2 using a mixture of YSZ and YSZ has low heat resistance due to long-term operation of the solid electrolyte fuel cell, causing grain growth due to sintering to decrease the specific surface area, Reacts with to form an insulator such as La 2 Zr 2 O 7 and the electrical conductivity decreases,
In some cases, the power generation performance of the solid electrolyte fuel cell is reduced, and stable power generation becomes difficult. [0005] Such a problem occurs not only in the oxygen-side electrode (air-side electrode) 2 of the solid electrolyte fuel cell but also in the oxygen-side electrode of a steam electrolysis cell having a structure similar to that of the fuel cell. Was. Accordingly, an object of the present invention is to provide an oxygen-side electrode capable of suppressing a decrease in power generation performance due to long-term use of a solid electrolyte fuel cell, a steam electrolysis cell, or the like. The oxygen-side electrode according to the present invention for solving the above-mentioned problems is an oxygen-side electrode used for a solid electrolyte fuel cell or a steam electrolysis cell, and comprises an yttria-stabilized electrode. Zirconia and (Pr (1-x) S
r x ) y MnO 3 (provided that 0.1 ≦ x ≦ 0.4, 1.
0 <y ≦ 1.05), which is characterized by using a mixture with a perovskite oxide. An embodiment in which the oxygen-side electrode according to the present invention is applied to a solid oxide fuel cell will be described with reference to FIG. FIG. 1 is a schematic structural view of the main part. However, the same reference numerals and the like as those used in the description of the above-described related art are used for the same parts as those described in the above-described related art, and the description thereof will be omitted. In FIG. 1, reference numeral 12 denotes a porous oxygen-side electrode (air-side electrode), which comprises YSZ (yttria-stabilized zirconia) and PSM (praseodymium strontium polymer ) .
Manganese oxide: (Pr (1-x) Sr x ) y MnO 3 (only
0.1 ≦ x ≦ 0.4, 1.0 <y ≦ 1.05))
And using a mixture of Ranaru perovskite oxide. In such an oxygen-side electrode 12, Y
SZ (70-90 wt%) and perovskite oxide (1
And an organic solvent (for example, butyl carbitol, turpentine oil, butanol, etc.) for improving the dispersibility of these powders, and kneaded into a paste by a roll mill to screen the solid electrolyte 1. By applying a printing method and then performing a baking process, it can be easily manufactured. In a solid electrolyte fuel cell using such an oxygen-side electrode 12, the specific surface area and the conductivity of the oxygen-side electrode 12 do not decrease even after long-term operation. Therefore, according to the solid electrolyte fuel cell using the oxygen-side electrode 12, a decrease in power generation performance due to long-term operation can be suppressed, and stable power generation can be performed for a long time. Although the present embodiment has been described for a case where the present invention is applied to a solid electrolyte fuel cell, the present invention can also be applied to a steam electrolytic cell having a structure similar to that of the fuel cell. EXAMPLES In order to confirm the effects of the above-described embodiment,
The following confirmation experiment was performed. [Confirmation Experiment 1: Output Density and Interface Resistance] <Production of Specimen> Based on the above-described embodiment, cells in which a solid electrolyte is sandwiched between a fuel-side electrode and an oxygen-side electrode under the following conditions, respectively. It was manufactured and a test specimen was obtained. << Specimen Conditions >> Solid electrolyte material: YSZ Size: 23 mmφ, thickness 250 μm Fuel side electrode material: NiO / YSZ = 70/30 Size: 10 mmφ Oxygen side electrode material: (Pr (1 -x) Sr x ) y MnO 3 / YSZ = 80/20, where x is 0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.45, 0.5 and 0.6 in total, and y is only 1.02. <Experimental Method> The output density and the interface resistance of each specimen manufactured under the above-described conditions were measured. <Experimental Results> The results are shown in FIG. As can be seen from FIG. 2, when x is 0.1 or more and 0.4 or less,
The output density was 1.3 W / cm 2 or more, and the interface resistance was 0.9 Ω · cm 2 . Therefore, 0.1 ≦ x ≦ 0.
When it was 4, it was confirmed that good results could be obtained. [Confirmation Experiment 2: Specific Surface Area] <Preparation of Specimen> (Pr (1-x) Sr x ) y MnO 3 (where x is 0.1, 0.2, 0.3 and 0.4, and y is 1) .
00, 1.01, 1.02, 1.03, 1.04, 1.05, 1.06 Total 7
) Were synthesized by the alkoxide method to obtain test specimens (total of 28 types). <Experimental method> The specific surface area was measured after each of the above-mentioned test specimens (28 kinds) was heat-treated (1200 ° C. × 10 hours). <Experimental Results> The results are shown in FIG. As can be seen from FIG. 3, when y exceeds 1.00, the specific surface area becomes 1
m 2 / g or more. On the other hand, when y exceeds 1.05, the deviation from the constant ratio of perovskite becomes large, and an impurity phase is recognized. Therefore, 1.
When 00 <y ≦ 1.05, it was confirmed that good results could be obtained. [Confirmation Experiment 3: Comparison of Specific Surface Area] <Production of Specimen and Comparative Object> (Pr 0.6 Sr 0.4 ) 1.03
A raw material powder of MnO 3 was synthesized by an alkoxide method to obtain a specimen, and (La 0.8 Sr 0.2 ) MnO 3
A comparative material was obtained from the raw material powder of No. 3 . <Experimental Method> The test specimen and the comparative specimen were each subjected to a heat treatment (1200 ° C. × 10 hours), and the change over time in the specific surface area was determined. <Experimental Results> The results are shown in FIG. As can be seen from FIG. 4, although the specific surface area of the comparative sample was significantly reduced with the lapse of time, the specific surface area of the test sample was almost unchanged even after the lapse of time, and the initial size was small. It was confirmed that it could be maintained. [Confirmation Experiment 4: Comparison of Output Current] <Production of Specimen and Comparative Body> Cells in which a solid electrolyte was sandwiched between a fuel electrode and an oxygen electrode were produced under the following conditions, respectively. I got a body. << Specimen Conditions >> Solid electrolyte: 8 mol% Y 2 O 3 stabilized zirconia (100 μm thick) ・ Fuel side electrode: mixture of NiO and YSZ ・ Oxygen side electrode: (Pr 0.6 Sr 0.4 ) 1.03 MnO 3 and YS
Mixture with Z << Comparator condition >> Solid electrolyte: same as test specimen ・ Fuel side electrode: same as test specimen ・ Oxygen side electrode: mixture of (La 0.8 Sr 0.2 ) MnO 3 and YSZ <Experimental method> The change with time in the output current of the above-mentioned test specimen and the comparative specimen at an output voltage of 0.7 V under a temperature environment of 1000 ° C. was measured. <Experimental Results> The results are shown in FIG. As can be seen from FIG. 5, although the output current of the comparative body gradually decreases with the passage of time, the output current of the test body hardly changes even after the passage of time. It was confirmed that it could be maintained. The oxygen-side electrode according to the present invention is an oxygen-side electrode used in a solid electrolyte fuel cell or a steam electrolysis cell, and is composed of yttria-stabilized zirconia and (Pr (1-x)
Sr x ) y MnO 3 (provided that 0.1 ≦ x ≦ 0.4,
1.0 <y ≦ 1.05), so that, for example, when applied to a solid electrolyte fuel cell, even if the fuel cell is operated for a long time, the specific surface area and the conductivity are not changed. It is possible to suppress a decrease in the rate.
For this reason, a decrease in power generation performance due to long-term operation can be suppressed, and stable power generation can be performed for a long time. [0032]
【図面の簡単な説明】
【図１】本発明による酸素側電極を固体電解質燃料電池
に適用した場合の実施の形態の要部の概略構造図であ
る。
【図２】確認実験１の結果を表すグラフである。
【図３】確認実験２の結果を表すグラフである。
【図４】確認実験３の結果を表すグラフである。
【図５】確認実験４の結果を表すグラフである。
【図６】固体電解質燃料電池の概略構造を表す要部分解
斜視図である。
【符号の説明】
１ 固体電解質
２，１２ 酸素側電極（空気側電極）
３ 燃料側電極
４，５ 導電性波板
６，７ インタコネクタ
１０１ 酸化ガス
１０２ 燃料ガスBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a main part of an embodiment when an oxygen-side electrode according to the present invention is applied to a solid oxide fuel cell. FIG. 2 is a graph showing the result of confirmation experiment 1. FIG. 3 is a graph showing the result of confirmation experiment 2. FIG. 4 is a graph showing the result of confirmation experiment 3. FIG. 5 is a graph showing the result of confirmation experiment 4. FIG. 6 is an exploded perspective view of a main part showing a schematic structure of a solid oxide fuel cell. [Description of Signs] 1 Solid electrolyte 2, 12 Oxygen side electrode (air side electrode) 3 Fuel side electrode 4, 5 Conductive corrugated plate 6, 7 Interconnector 101 Oxidizing gas 102 Fuel gas
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武信 弘一 兵庫県神戸市兵庫区和田崎町一丁目１番 １号 三菱重工業株式会社 神戸造船所 内 (56)参考文献 特開 平９−190832（ＪＰ，Ａ) 特開 平８−287925（ＪＰ，Ａ) 特開 平８−236137（ＪＰ，Ａ) 特開 平７−226209（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 4/86 - 4/88,8/12 C25B 1/04 C25B 11/04 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koichi Takenobu 1-1 1-1 Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (56) References JP-A-9-190832 (JP) JP-A-8-287925 (JP, A) JP-A-8-236137 (JP, A) JP-A-7-226209 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB Name) H01M 4/86-4 / 88,8 / 12 C25B 1/04 C25B 11/04
Claims (1)
ルに用いられる酸素側電極であって、イットリア安定化
ジルコニアと（Ｐｒ (1-x) Ｓｒ x ） y ＭｎＯ 3 （ただ
し、０．１≦ｘ≦０．４、１．０＜ｙ≦１．０５）から
なるペロブスカイト型酸化物との混合物を用いてなるこ
とを特徴とする酸素側電極。(1) An oxygen electrode used in a solid electrolyte fuel cell or a steam electrolysis cell, comprising yttria-stabilized zirconia and (Pr (1-x) Sr x ) y MnO 3. (However
And 0.1 ≦ x ≦ 0.4, 1.0 <y ≦ 1.05)
Oxygen-side electrode, characterized by comprising using a mixture of perovskite oxide becomes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05930398A JP3403055B2 (en) | 1998-03-11 | 1998-03-11 | Oxygen side electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05930398A JP3403055B2 (en) | 1998-03-11 | 1998-03-11 | Oxygen side electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11260376A JPH11260376A (en) | 1999-09-24 |
| JP3403055B2 true JP3403055B2 (en) | 2003-05-06 |
Family
ID=13109481
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05930398A Expired - Fee Related JP3403055B2 (en) | 1998-03-11 | 1998-03-11 | Oxygen side electrode |
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| Country | Link |
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| JP (1) | JP3403055B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7595122B2 (en) * | 2002-06-11 | 2009-09-29 | General Electric Company | Interconnect supported electrolyzer assembly, preform and method of fabrication |
| WO2007091642A1 (en) * | 2006-02-10 | 2007-08-16 | Nippon Shokubai Co., Ltd. | Air electrode material for solid oxide fuel cell |
| EP3176287B1 (en) | 2014-07-28 | 2020-11-18 | Nippon Shokubai Co., Ltd. | Steam electrolysis cell |
| JP6367636B2 (en) * | 2014-07-28 | 2018-08-01 | 株式会社日本触媒 | Steam electrolysis cell |
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1998
- 1998-03-11 JP JP05930398A patent/JP3403055B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11260376A (en) | 1999-09-24 |
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