JP2014120471A - 固体酸化物燃料電池の電極用ペースト、これを用いる固体酸化物燃料電池およびその製造方法 - Google Patents
固体酸化物燃料電池の電極用ペースト、これを用いる固体酸化物燃料電池およびその製造方法 Download PDFInfo
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Abstract
【解決手段】本発明の固体酸化物燃料電池の電極用ペーストは、燃料電極、電解質層および空気電極が順次積層された燃料電極支持型のものであって、前記ペーストが、原料粉末、分散剤、結合剤、溶媒および液相気孔形成剤からなるものである。
【選択図】なし
Description
酸化ニッケル粉末と8%のイットリア安定化ジルコニアが6:4の重量比で含有された原料粉末に対して、0〜20重量%の気孔形成剤としてエチレングリコールを混合し、前記混合物100重量部に対して成形補助剤である10重量部の結合剤としてPVB、4重量部の可塑剤としてジオクチルフタレート(Dioctyl Phthalate)、2重量部の分散剤としてBYK2155を混合した後、前記混合物をトルエンとエチルアルコールを5:5で混ぜた溶媒で湿式混合した。
20 コーティング膜
30 基質
Claims (11)
- 燃料電極、電解質層および空気電極が順次積層された燃料電極支持型の固体酸化物燃料電池の電極用ペーストであって、
前記ペーストが、原料粉末、分散剤、結合剤、溶媒および液相気孔形成剤からなる、固体酸化物燃料電池の電極用ペースト。 - 前記液相気孔形成剤は、沸点が120℃以上であり、分子量が180以下であるグリコール系有機溶剤またはパラフィン系有機溶剤であることを特徴とする、請求項1に記載の固体酸化物燃料電池の電極用ペースト。
- 前記ペーストは、10〜90重量%の原料粉末、0.2〜5重量%の分散剤、1〜20重量%の結合剤、5〜70重量%の溶媒および1〜35重量%の液相気孔形成剤からなることを特徴とする、請求項1に記載の固体酸化物燃料電池の電極用ペースト。
- 前記グリコール系有機溶剤は、エチレングリコールまたはプロピレングリコールであり、前記パラフィン系有機溶剤は、ミネラルスピリットであることを特徴とする、請求項2に記載の固体酸化物燃料電池の電極用ペースト。
- 前記原料粉末は、燃料極の場合、NiO−YSZ、NiO−ScSZまたはNiO−GDCであり、空気極の場合、ランタン−ストロンチウム−マンガン酸化物(LSM)、ランタン−ストロンチウム−コバルト−フェライト酸化物(LSCF)またはランタン−ストロンチウム−コバルト−マンガン酸化物(LSCM)であり、前記分散剤は、リン酸系分散剤またはα−テルピネオール(α−terpineol)であり、前記結合剤は、エチルセルロース(Ethyl Cellulose)またはポリビニルブチラール(PVB)であり、前記溶媒は、イソプロピルアルコール(Isopropyl alcohol)、エチルアルコール(Ethyl alcohol)、トルエン(Toluene)またはこれらの2種以上の混合物であることを特徴とする、請求項1に記載の固体酸化物燃料電池の電極用ペースト。
- 原料粉末、分散剤、結合剤、溶媒および液相気孔形成剤からなるペーストを塗布して燃料電極支持体を形成する段階と、
前記燃料電極支持体上に電解質層を形成する段階と、
前記燃料電極支持体および電解質層からなる構造物を焼成する段階と、
前記電解質層上に空気電極を形成した後、これを焼成する段階と、を含む、固体酸化物燃料電池の製造方法。 - 前記液相気孔形成剤は、沸点が120℃以上であり、分子量が180以下であるグリコール系有機溶剤またはパラフィン系有機溶剤であることを特徴とする、請求項6に記載の固体酸化物燃料電池の製造方法。
- 前記ペーストは、10〜90重量%の原料粉末、0.2〜5重量%の分散剤、1〜20重量%の結合剤、5〜70重量%の溶媒および1〜35重量%の液相気孔形成剤からなることを特徴とする、請求項6に記載の固体酸化物燃料電池の製造方法。
- 前記グリコール系有機溶剤は、エチレングリコールまたはプロピレングリコールであり、前記パラフィン系有機溶剤は、ミネラルスピリットであることを特徴とする、請求項7に記載の固体酸化物燃料電池の製造方法。
- 前記原料粉末は、燃料極の場合、NiO−YSZ、NiO−ScSZまたはNiO−GDCであり、空気極の場合、ランタン−ストロンチウム−マンガン酸化物(LSM)、ランタン−ストロンチウム−コバルト−フェライト酸化物(LSCF)またはランタン−ストロンチウム−コバルト−マンガン酸化物(LSCM)であり、前記分散剤は、リン酸系分散剤またはα−テルピネオールであり、前記結合剤は、エチルセルロースまたはポリビニルブチラルであり、前記溶媒は、イソプロピルアルコール、エチルアルコール、トルエンまたはこれらの2種以上の混合物であることを特徴とする、請求項6に記載の固体酸化物燃料電池の製造方法。
- 請求項6に記載の製造方法により形成される固体酸化物燃料電池であって、
0.4〜1mmの厚さを有する多孔性燃料電極支持体、5〜20μmの厚さを有する電解質層および10〜80μmの厚さを有する多孔性空気電極が順次積層されてなり、前記電極の気孔率が10%〜30%である、固体酸化物燃料電池。
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Application Number | Priority Date | Filing Date | Title |
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KR20120147556 | 2012-12-17 | ||
KR10-2012-0147556 | 2012-12-17 |
Publications (2)
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JP2020505224A (ja) * | 2017-01-18 | 2020-02-20 | サウジ アラビアン オイル カンパニー | 炭化水素予備改質用構造化触媒 |
KR20230093190A (ko) * | 2022-06-16 | 2023-06-27 | 한국세라믹기술원 | 초음파 스프레이법을 이용 미세구조 제어를 통한 고활성 전극 및 이를 포함하는 고체산화물 연료전지 |
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CN104157885A (zh) * | 2014-08-19 | 2014-11-19 | 大连理工大学 | 一种高孔隙率长孔道固体氧化物燃料电池电极的制备方法 |
CN107112544B (zh) * | 2015-09-18 | 2020-08-11 | 株式会社Lg化学 | 固体氧化物燃料电池及其电极浆料、电极的生片和电极、以及其电极的制造方法 |
CN114361543A (zh) * | 2022-01-06 | 2022-04-15 | 徐州华清京昆能源有限公司 | 一种高平整度低应力固体氧化物燃料电池的制备方法 |
US20240178407A1 (en) * | 2022-11-30 | 2024-05-30 | Samsung Electro-Mechanics Co., Ltd. | Manufacturing method of solid oxide cell |
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