JP2015509277A - 中低温運転で出力性能が向上された固体酸化物燃料電池の設計及び製造技術 - Google Patents
中低温運転で出力性能が向上された固体酸化物燃料電池の設計及び製造技術 Download PDFInfo
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Abstract
Description
なお、本願明細書及び特許請求の範囲の記載中において、「か焼」とは、物質を強く熱して、水分その他の揮発成分を除去することを意味する。
Claims (18)
- 燃料極支持体、燃料極反応層、電解質、及び空気極で構成された固体酸化物燃料電池の単位セルにおいて、
NiOとYSZの混合材質で形成された燃料極支持体と、
CeScSZとNiOの混合材質で形成された燃料極反応層と、
CeScSZ材質で形成された電解質と、
LSMとCeScSZの混合材質で形成された空気極と、
を含むことを特徴とする固体酸化物燃料電池の単位セル。 - 前記燃料極反応層、前記電解質、及び前記空気極は、1Ce10ScSZ粉末を含む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単位セル。
- 前記燃料極支持体、前記燃料極反応層、及び前記電解質は、それぞれテープキャスティング法を用いて製造されたフィルムを積層して同時焼成す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単位セル。
- 前記空気極は、スクリーン印刷法を用いて製造されることを特徴とする請求項3に記載の固体酸化物燃料電池の単位セル。
- 前記燃料極反応層は、NiO粉末とCeScSZ粉末を46:54(wt%)に混合して製造されることを特徴とする請求項3に記載の固体酸化物燃料電池の単位セル。
- 前記NiO粉末は0.5umの大きさを有し、前記CeScSZ粉末は0.2〜0.5umの大きさを有し、比表面積が11m2/gであることを特徴とする請求項5に記載の固体酸化物燃料電池の単位セル。
- 前記電解質は、前記CeScSZ粉末と溶媒を40:60(wt%)に混合して製造されることを特徴とする請求項3に記載の固体酸化物燃料電池の単位セル。
- 前記CeScSZ粉末は0.2〜0.5umの大きさを有し、比表面積が11m2/g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単位セル。
- 前記空気極は、LSM粉末とCeScSZ粉末の重量比を1:1(wt%)に混合して製造されることを特徴とする請求項3に記載の固体酸化物燃料電池の単位セル。
- NiO粉末とYSZ粉末を混合して燃料極支持体スラリーを製造するステップと、
CeScSZ粉末とNiO粉末を混合して燃料極反応層スラリーを製造するステップと、
CeScSZ粉末を用いて電解質スラリーを製造するステップと、
前記燃料極支持体スラリーを用いてテープキャスティング法で燃料極支持体シートを製造するステップと、
前記燃料極反応層スラリーを用いてテープキャスティング法で燃料極反応層シートを製造するステップと、
前記電解質スラリーを用いてテープキャスティング法で電解質シートを製造するステップと、
前記燃料極支持体シート、前記燃料極反応層シート、及び前記電解質シートを順次積層して燃料極支持体形の電解質組立体を製造するステップと、
前記燃料極支持体形の電解質組立体をか焼及び同時焼成して燃料極支持体形の電解質を製造するステップと、
LSM粉末とCeScSZ粉末を混合して空気極ペーストを形成するステップと、
前記空気極ペーストをスクリーン印刷法で前記燃料極支持体形の電解質上に塗布するステップと、
焼結するステップと、
を含むことを特徴とする固体酸化物燃料電池の単位セル製造方法。 - 前記燃料極反応層スラリー、前記電解質スラリー、及び前記空気極ペーストは、1Ce10ScSZ粉末を含むことを特徴とする請求項10に記載の固体酸化物燃料電池の単位セル製造方法。
- 前記燃料極反応層スラリーは、前記NiO粉末と前記CeScSZ粉末を46:54(wt%)に混合して製造されることを特徴とする請求項11に記載の固体酸化物燃料電池の単位セル製造方法。
- 前記NiO粉末は0.5umの大きさを有し、前記CeScSZ粉末は0.2〜0.5umの大きさを有し、比表面積が11m2/gであることを特徴とする請求項12に記載の固体酸化物燃料電池の単位セル製造方法。
- 前記電解質スラリーは、前記CeScSZ粉末と溶媒を40:60(wt%)に混合して製造されることを特徴とする請求項11に記載の固体酸化物燃料電池の単位セル製造方法。
- 前記CeScSZ粉末は0.2〜0.5umの大きさを有し、比表面積が11m2/gであることを特徴とする請求項14に記載の固体酸化物燃料電池の単位セル製造方法。
- 前記空気極ペーストは、前記LSM粉末と前記CeScSZ粉末の重量比を1:1(wt%)に混合して製造されることを特徴とする請求項11に記載の固体酸化物燃料電池の単位セル製造方法。
- 前記燃料極支持体形の電解質組立体を製造するステップは、
前記燃料極支持体シート、前記燃料極反応層シート、及び前記電解質シートを、積層時に第1方向と前記第1方向に直交する第2方向に積層し、第1方向及び第2方向に沿って交代に積層することを特徴とする請求項10に記載の固体酸化物燃料電池の単位セル製造方法。 - 前記燃料極支持体形の電解質を製造するステップは、前記燃料極支持体形の電解質組立体上に一定の大きさと重量を有する平板型アルミナセラミック支持体を搭載し、約40g/cm2の力で押しながら1350℃で同時焼成することを特徴とする請求項10に記載の固体酸化物燃料電池の単位セル製造方法。
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