JP5598920B2 - 固体酸化物燃料電池用電解質緻密材料の製造方法 - Google Patents
固体酸化物燃料電池用電解質緻密材料の製造方法 Download PDFInfo
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- JP5598920B2 JP5598920B2 JP2010250535A JP2010250535A JP5598920B2 JP 5598920 B2 JP5598920 B2 JP 5598920B2 JP 2010250535 A JP2010250535 A JP 2010250535A JP 2010250535 A JP2010250535 A JP 2010250535A JP 5598920 B2 JP5598920 B2 JP 5598920B2
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- electrolyte
- fuel cell
- sintering
- oxide fuel
- solid oxide
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- 239000003792 electrolyte Substances 0.000 title claims description 50
- 239000000446 fuel Substances 0.000 title claims description 27
- 239000007787 solid Substances 0.000 title claims description 26
- 239000000463 material Substances 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000005245 sintering Methods 0.000 claims description 29
- 210000004027 cell Anatomy 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 22
- 239000002994 raw material Substances 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 239000007790 solid phase Substances 0.000 claims description 4
- 238000006467 substitution reaction Methods 0.000 claims description 4
- 210000003850 cellular structure Anatomy 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 2
- 150000002910 rare earth metals Chemical group 0.000 claims 1
- 239000002001 electrolyte material Substances 0.000 description 12
- 239000012528 membrane Substances 0.000 description 12
- 239000000758 substrate Substances 0.000 description 12
- 229910000480 nickel oxide Inorganic materials 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 239000010416 ion conductor Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical group [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 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
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- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Description
本発明の一側面によれば、少なくとも固体酸化物燃料電池の電極と電解質からなる部品を粉末からの多結晶体材料を焼結して作成する方法において、前記電解質に含まれている伝導率を阻害する元素を高温で固相拡散することにより他の元素で置換して伝導率を改善する、固体酸化物燃料電池部品製造法が与えられる。
ここで、前記電極及び前記電解質が、前記粉末を原料として、焼結促進剤を添加して、焼結して製造してよい。
また、前記電極と前記電解質が接合しており、高温で仮焼し、固相拡散と元素置換するようにしてよい。
前記電解質がイットリア(Y2O3)を固溶したBaZrO3で組成式がBaZrxY1−xO3−δであり(ただし、0.1<x<0.99、0.01<δ<0.5)、前記焼結促進剤がIn、Ga、Liから成る群から選ばれた少なくとも1種の元素を含み、前記少なくとも1種の元素を置換する元素がY等の希土類元素であるようにしてよい。
本発明を適用する材料の最終的な形態は、固体酸化物の電極(陰極)に、本発明の電解質材料が接合され電池を形成する。電解質材料はBZにY2O3を固溶した材料が最適であるが、他の希土類酸化物でもよい。電解質はBZIの粉末を焼結して作る。InはBZの焼結助剤として働き、BZIの緻密な膜が出来る。Inの代わりにGaあるいはLiでも有効である。電極は組成がNiOを混合したBZY等が選ばれる。あるいは他の電気伝導性固体でもよい。電極はNiOを含むBZYの粉末を焼結し、板状基盤にする。出発原料の粉末は、均一混合のために有機プレカーサー方法を用いることが好ましい。NiOは焼結助剤である。このようにして、図1の左端に示すように、電極基盤に電解質の膜ができる。
0.1<x<0.99
0.01<δ<0.5
なお、本電解質膜中の残留In濃度を10原子%以下まで低減すれば、プロトン伝導性がかなり改善される。
上述のような方法を用いることにより、厚さが100μm〜1μmで平均粒径が10μm〜0.1μmの、これまでになかった薄く且つ緻密な電解質膜を作製することができる。
その結果、NiO添加BZY板状基盤の上に、緻密なBZI膜が形成された。続けて同温度で10時間仮焼した。
Claims (4)
- 少なくとも固体酸化物燃料電池の電極とイオン伝導性酸化物を含む電解質からなる部品を粉末からの多結晶体材料を焼結して作成する方法において、
焼結工程において、前記イオン伝導性酸化物に含まれているイオン伝導率を低下させる元素を他の元素で置換して高温で固相拡散させることにより伝導率を改善する、固体酸化物燃料電池部品製造法。 - 前記電極及び前記電解質が、前記粉末を原料として、焼結促進剤を添加して、焼結して製造する、請求項1の製造方法。
- 前記電極と前記電解質が接合しており、高温で仮焼し、元素置換と固相拡散する、請求項1の製造方法。
- 前記置換後の電解質がイットリア(Y2O3)を固溶したBaZrO3で組成式がBaZrxY1−xO3−δであり(ただし、0.1<x<0.99、0.01<δ<0.5)、前記焼結促進剤がIn、Ga、Liから成る群から選ばれた少なくとも1種の元素を含み、前記少なくとも1種の元素を置換する元素がY等の希土類元素である、請求項2の製造方法。
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JP2010250535A JP5598920B2 (ja) | 2010-11-09 | 2010-11-09 | 固体酸化物燃料電池用電解質緻密材料の製造方法 |
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JP2012104308A JP2012104308A (ja) | 2012-05-31 |
JP5598920B2 true JP5598920B2 (ja) | 2014-10-01 |
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Families Citing this family (5)
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JP6191986B2 (ja) * | 2013-06-27 | 2017-09-06 | 国立研究開発法人物質・材料研究機構 | 全固体電気二重層を利用した可変電気伝導素子およびそれを用いた電子装置 |
JP6132259B2 (ja) * | 2013-07-18 | 2017-05-24 | 住友電気工業株式会社 | 燃料電池用複合材料、燃料電池用複合材料の製造方法及び燃料電池 |
JP6160386B2 (ja) * | 2013-09-17 | 2017-07-12 | 住友電気工業株式会社 | 燃料電池 |
CN110731025A (zh) | 2017-06-15 | 2020-01-24 | 住友电气工业株式会社 | 固体电解质部件、固体氧化物型燃料电池、水电解装置、氢泵及固体电解质部件的制造方法 |
CN116375469B (zh) * | 2023-03-31 | 2024-05-03 | 中国矿业大学 | 一种固相合成质子导体电解质陶瓷粉体的方法 |
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JP3927663B2 (ja) * | 1997-10-15 | 2007-06-13 | 松下電器産業株式会社 | 混合イオン電導体 |
JP5118827B2 (ja) * | 2005-08-05 | 2013-01-16 | 日産自動車株式会社 | プロトン伝導燃料電池およびその製造方法、水素センサおよびその製造方法 |
JP2009054520A (ja) * | 2007-08-29 | 2009-03-12 | Toyota Motor Corp | 電極−電解質膜接合体およびその製造方法 |
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