JPH03196465A - Manufacture of solid electrolyte for fuel cell - Google Patents
Manufacture of solid electrolyte for fuel cellInfo
- Publication number
- JPH03196465A JPH03196465A JP1337991A JP33799189A JPH03196465A JP H03196465 A JPH03196465 A JP H03196465A JP 1337991 A JP1337991 A JP 1337991A JP 33799189 A JP33799189 A JP 33799189A JP H03196465 A JPH03196465 A JP H03196465A
- Authority
- JP
- Japan
- Prior art keywords
- stabilized zirconia
- thin film
- solid electrolyte
- zirconium compound
- fuel cell
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000010409 thin film Substances 0.000 claims abstract description 21
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 150000003755 zirconium compounds Chemical class 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 3
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 3
- 239000011575 calcium Substances 0.000 claims abstract description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims abstract description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000155 melt Substances 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 7
- 238000010304 firing Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- -1 organometallic zirconium salts Chemical class 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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
- Y02E60/50—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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は燃料電池用固体電解質の製造方法に関するもの
で、さらに詳しく言えば、その固体電解質に用いられる
安定化ジルコニア薄膜の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a solid electrolyte for fuel cells, and more specifically, to a method for manufacturing a stabilized zirconia thin film used in the solid electrolyte.
従来技術とその問題点
固体電解質は、固体電解質燃料電池、高温電解セル、固
体電解質センサーに広く用いられ、その製造方法として
は、プラズマ溶射法、化学蒸着法（ＣＶＤ） 、電気化
学蒸着法（ＥＶＤ）、有機金属ジルコニウム塩の熱分解
法などが知られている。ところが、固体電解質燃料電池
のような緻密な薄膜を必要とする用途には、プラズマ溶
射法、電気化学蒸着法（Ｅ Ｖ Ｄ）が適しているもの
の、高価な製造装置を必要とするうえに、薄膜を必要と
する部分と必要としない部分とを構成するマスキングに
時間がかかるため、電池の量産性に問題があった。Prior art and its problems Solid electrolytes are widely used in solid electrolyte fuel cells, high-temperature electrolytic cells, and solid electrolyte sensors, and their manufacturing methods include plasma spraying, chemical vapor deposition (CVD), and electrochemical vapor deposition (EVD). ), thermal decomposition methods of organometallic zirconium salts, etc. are known. However, although plasma spraying and electrochemical vapor deposition (EVD) are suitable for applications that require dense thin films such as solid electrolyte fuel cells, they require expensive manufacturing equipment and Since it takes time to mask the parts that require a thin film and the parts that do not, there has been a problem in the mass production of batteries.
このような問題を解決するため、第２図のように、安定
化ジルコニア粉末３をスラリーにして焼成し、固体電解
質の薄膜を構成することも試みられてきたが、空気極も
しくは燃料極１の上に構成された薄膜に割れ２を生じた
り、薄膜が剥離するという欠点があった。In order to solve this problem, attempts have been made to make a slurry of stabilized zirconia powder 3 and sinter it to form a solid electrolyte thin film, as shown in Fig. 2. There were drawbacks such as cracks 2 occurring in the thin film formed thereon and peeling of the thin film.
発明の目的
本発明は上記欠点を解消するもので、構成された薄膜の
割れや剥離は、スラリーの焼成時に安定化ジルコニア粉
末が収縮して生じることに着目してなされたもので、安
定化ジルコニアと、５００〜１６００℃で溶融するジル
コニウム化合物とからなるスラリーを焼成することによ
り、薄膜が剥離したり、割れを生じさせないようにする
ことを目的とするものである。Purpose of the Invention The present invention was made to solve the above-mentioned drawbacks, and was made by focusing on the fact that cracks and peeling of the thin film formed are caused by shrinkage of stabilized zirconia powder during firing of slurry. The purpose of this is to prevent the thin film from peeling or cracking by firing a slurry consisting of a zirconium compound and a zirconium compound that melts at 500 to 1600°C.
発明の構成
本発明の燃料電池用固体電解質の製造方法は、安定化剤
を添加した安定化ジルコニアと、ジルコニウム化合物と
からなるスラリーを、空気極もしくは燃料極に塗布した
後焼成し、安定化ジルコニア薄膜を形成することを特徴
とするものである。Structure of the Invention The method for producing a solid electrolyte for a fuel cell according to the present invention is to apply a slurry consisting of stabilized zirconia added with a stabilizer and a zirconium compound to an air electrode or a fuel electrode, and then to sinter the stabilized zirconia. It is characterized by forming a thin film.
実施例
以下実施例により説明する。第１図は本発明の製造方法
により製造された固体電解質の薄膜の断面図で、第２図
と同一部分には同一符号を付している。第１図に示した
ように、本発明は、空気極もしくは燃料極１の表面にス
ラリーを塗布してジルコニウム化合物４の溶融温度より
高い温度で焼成するものであるから、スラリー中のジル
コニウム化合物４が溶融して安定化ジルコニア粉末３の
間隙を埋めるので、固体電解質の薄膜としての安定化ジ
ルコニア薄膜は緻密なものとすることができる。EXAMPLES The present invention will be explained below using examples. FIG. 1 is a sectional view of a solid electrolyte thin film manufactured by the manufacturing method of the present invention, and the same parts as in FIG. 2 are given the same reference numerals. As shown in FIG. 1, in the present invention, a slurry is applied to the surface of the air electrode or fuel electrode 1 and fired at a temperature higher than the melting temperature of the zirconium compound 4. Therefore, the zirconium compound 4 in the slurry Since the stabilized zirconia powder 3 is melted and fills the gaps in the stabilized zirconia powder 3, the stabilized zirconia thin film as a solid electrolyte thin film can be made dense.
なお、本発明に使用する安定化剤としては、イツトリウ
ム、カルシウム、スカンジウム、インテルビウム、ネオ
ジウム、ガドリニウムの酸化物が好ましい。As the stabilizer used in the present invention, oxides of yttrium, calcium, scandium, interbium, neodymium, and gadolinium are preferable.
上記のような製造方法により製造された固体電解質の薄
膜を用いて燃料電池を構成すると、電流密度を大きくし
ても電圧の低下を小さくすることができる。When a fuel cell is constructed using a solid electrolyte thin film produced by the above-described production method, the drop in voltage can be reduced even when the current density is increased.
発明の効果
実施例において詳述した如く、本発明の製造方法は、固
体電解質の薄膜としての安定化ジルコニア薄膜を緻密な
ものとすることができるので、安価で高性能な燃料電池
を得ることができる。Effects of the Invention As detailed in the Examples, the production method of the present invention makes it possible to make a stabilized zirconia thin film as a solid electrolyte thin film, so that it is possible to obtain an inexpensive and high-performance fuel cell. can.
第１図は本発明の製造方法により製造された空気極もし
くは燃料極の断面図、第２図は従来の製造方法により製
造された空気極もしくは燃料極の断面図である。
１・・・空気極もしくは燃料極
２・・・割れ ３・・・安定化ジルコニア粉末４・・・
ジルコニウム化合物FIG. 1 is a sectional view of an air electrode or fuel electrode manufactured by the manufacturing method of the present invention, and FIG. 2 is a sectional view of an air electrode or fuel electrode manufactured by a conventional manufacturing method. 1...Air electrode or fuel electrode 2...Crack 3...Stabilized zirconia powder 4...
zirconium compound
Claims (1)
ウム化合物とからなるスラリーを、空気極もしくは燃料
極に塗布した後焼成し、安定化ジルコニア薄膜を形成す
ることを特徴とする燃料電池用固体電解質の製造方法。 ２）安定化剤は、イットリウム、カルシウム、スカンジ
ウム、イッテルビウム、ネオジウム、ガドリニウムの酸
化物であることを特徴とする請求項第１項記載の燃料電
池用固体電解質の製造方法。 ３）ジルコニウム化合物は５００〜１６００℃で溶融す
るものであることを特徴とする請求項第１項記載の燃料
電池用固体電解質の製造方法。 ４）スラリーは、不活性気流中または還元雰囲気中また
は空気中で焼成することを特徴とする請求項第１項記載
の燃料電池用固体電解質の製造方法。[Claims] 1) A slurry consisting of stabilized zirconia added with a stabilizer and a zirconium compound is applied to an air electrode or a fuel electrode and then fired to form a stabilized zirconia thin film. A method for producing a solid electrolyte for fuel cells. 2) The method for producing a solid electrolyte for a fuel cell according to claim 1, wherein the stabilizer is an oxide of yttrium, calcium, scandium, ytterbium, neodymium, or gadolinium. 3) The method for producing a solid electrolyte for a fuel cell according to claim 1, wherein the zirconium compound melts at a temperature of 500 to 1600°C. 4) The method for producing a solid electrolyte for a fuel cell according to claim 1, wherein the slurry is fired in an inert gas flow, a reducing atmosphere, or air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1337991A JPH03196465A (en) | 1989-12-25 | 1989-12-25 | Manufacture of solid electrolyte for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1337991A JPH03196465A (en) | 1989-12-25 | 1989-12-25 | Manufacture of solid electrolyte for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03196465A true JPH03196465A (en) | 1991-08-27 |
Family
ID=18313914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1337991A Pending JPH03196465A (en) | 1989-12-25 | 1989-12-25 | Manufacture of solid electrolyte for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03196465A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9755263B2 (en) | 2013-03-15 | 2017-09-05 | Bloom Energy Corporation | Fuel cell mechanical components |
| US9799909B2 (en) | 2010-01-26 | 2017-10-24 | Bloom Energy Corporation | Phase stable doped zirconia electrolyte compositions with low degradation |
| US9812714B2 (en) | 2006-10-18 | 2017-11-07 | Bloom Energy Corporation | Anode with remarkable stability under conditions of extreme fuel starvation |
| US10593981B2 (en) | 2007-04-13 | 2020-03-17 | Bloom Energy Corporation | Heterogeneous ceramic composite SOFC electrolyte |
| US10615444B2 (en) | 2006-10-18 | 2020-04-07 | Bloom Energy Corporation | Anode with high redox stability |
| US10651496B2 (en) | 2015-03-06 | 2020-05-12 | Bloom Energy Corporation | Modular pad for a fuel cell system |
| US10680251B2 (en) | 2017-08-28 | 2020-06-09 | Bloom Energy Corporation | SOFC including redox-tolerant anode electrode and system including the same |
| US10840535B2 (en) | 2010-09-24 | 2020-11-17 | Bloom Energy Corporation | Fuel cell mechanical components |
| US10978726B2 (en) | 2012-11-20 | 2021-04-13 | Bloom Energy Corporation | Doped scandia stabilized zirconia electrolyte compositions |
-
1989
- 1989-12-25 JP JP1337991A patent/JPH03196465A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9812714B2 (en) | 2006-10-18 | 2017-11-07 | Bloom Energy Corporation | Anode with remarkable stability under conditions of extreme fuel starvation |
| US10615444B2 (en) | 2006-10-18 | 2020-04-07 | Bloom Energy Corporation | Anode with high redox stability |
| US10622642B2 (en) | 2006-10-18 | 2020-04-14 | Bloom Energy Corporation | Anode with remarkable stability under conditions of extreme fuel starvation |
| US10593981B2 (en) | 2007-04-13 | 2020-03-17 | Bloom Energy Corporation | Heterogeneous ceramic composite SOFC electrolyte |
| US9799909B2 (en) | 2010-01-26 | 2017-10-24 | Bloom Energy Corporation | Phase stable doped zirconia electrolyte compositions with low degradation |
| US10840535B2 (en) | 2010-09-24 | 2020-11-17 | Bloom Energy Corporation | Fuel cell mechanical components |
| US10978726B2 (en) | 2012-11-20 | 2021-04-13 | Bloom Energy Corporation | Doped scandia stabilized zirconia electrolyte compositions |
| US9755263B2 (en) | 2013-03-15 | 2017-09-05 | Bloom Energy Corporation | Fuel cell mechanical components |
| US10651496B2 (en) | 2015-03-06 | 2020-05-12 | Bloom Energy Corporation | Modular pad for a fuel cell system |
| US10680251B2 (en) | 2017-08-28 | 2020-06-09 | Bloom Energy Corporation | SOFC including redox-tolerant anode electrode and system including the same |
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