JP6153666B2 - 固体酸化物燃料電池の燃料極支持体の製造方法および固体酸化物燃料電池の燃料極支持体 - Google Patents
固体酸化物燃料電池の燃料極支持体の製造方法および固体酸化物燃料電池の燃料極支持体 Download PDFInfo
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- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
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Description
燃料極支持体としてGDC(10mole% Gd doped Ceria)とNiOを50:50の体積比の比率にして厚さ3ミリメートルの燃料極支持体を1−軸加圧方法で製造し、1,450℃の温度で焼結した。その後、850℃の温度で還元ガス(H2)を用いてNiO/GDCをNi/GDCに30分間還元させた。
実施例1において硝酸を用いた表面処理をしない場合、表面に多孔性構造が存在せず、表面粗さは100ナノメートルであった。比較例1による燃料極支持体表面のSEM写真を図2に示す。
実施例1で製造した燃料極支持体の硝酸で処理された表面にGDCをディップコーティング方法により10マイクロメータ厚さで塗布し、1,450℃の温度で焼結して電解質を形成した。電解質上にLSCFをスクリーンプリント方法により30マイクロメータ厚さで塗布し、1,000℃の温度で焼結した後、空気極層を形成して燃料電池セルを製造した。
比較例1の燃料極支持体を用いて製造例1の方法と同様な方法により燃料電池セルを製造した。
製造例1〜2の燃料電池セルでインピーダンスを測定し、表面のセル耐久性を比較するために面積固有抵抗を測定した。その測定結果を図4に示す。
製造例1〜2の燃料電池セルでI−V−P方法によって試験したセル性能データを測定した。そのセル性能の測定結果を図5に示す。
Claims (8)
- 金属およびガドリニウムがドープされたセリア(GDC)を含む燃料極支持体の少なくとも1つの表面に酸性溶液を接触させて表面処理するステップを含む固体酸化物燃料電池の燃料極支持体の製造方法であって、
前記表面処理された表面を含む部分は、孔隙率5%以上50%以下、孔隙の大きさ0.1マイクロメータ以上1ミリメートル以下の多孔性構造であり、
前記表面処理により形成された多孔性構造は、全体燃料極支持体を基準に5体積%以上50体積%以下で存在し、
前記表面処理された表面の粗さは、200ナノメートル以上1,000ナノメートル以下であり、
前記表面処理された表面は、電解質と接する部分である製造方法。 - 前記酸性溶液のpHは1〜6の溶液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燃料極支持体の製造方法。
- 前記酸性溶液は、硝酸、塩酸、硫酸および酢酸からなる群から選択されたいずれか1つを含む溶液であることを特徴とする、請求項1または2に記載の固体酸化物燃料電池の燃料極支持体の製造方法。
- 前記金属は、Zr、Ce、Ti、Mg、Al、Si、Mn、Fe、Co、Ni、Cu、Zn、Mo、Y、Nb、Sn、La、Ta、VおよびNdからなる群から選択されることを特徴とする、請求項1〜3のいずれか一項に記載の固体酸化物燃料電池の燃料極支持体の製造方法。
- 請求項1〜4のいずれか1項に記載の製造方法を利用して燃料極支持体を製造するステップ、および前記燃料極支持体の表面処理された表面にイオン伝導性を有する無機酸化物を塗布して電解質を形成するステップを含む固体酸化物燃料電池の製造方法。
- 前記電解質に含まれる無機酸化物は、燃料極支持体に含まれる無機酸化物と同一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製造方法。
- 金属およびガドリニウムがドープされたセリア(GDC)を含む固体酸化物燃料電池の燃料極支持体であって、
前記燃料極支持体の少なくとも1つの表面を含む部分が、孔隙率5%以上50%以下、孔隙の大きさ0.1マイクロメータ以上1ミリメートル以下の、酸性溶液を用いた処理により形成された多孔性構造であり、
前記表面処理により形成された前記多孔性構造は、全体燃料極支持体を基準に5体積%以上50体積%以下で存在する固体酸化物燃料電池の燃料極支持体であって、
前記燃料極支持体において、多孔性構造が存在する表面の粗さは、200ナノメートル以上1,000ナノメートル以下であり、
前記燃料極支持体において、多孔性構造が存在する表面が、電解質と接する部分である固体酸化物燃料電池の燃料極支持体。 - 請求項7に記載の燃料極支持体、
前記燃料極支持体と対向して位置する空気極、および
前記燃料極支持体と空気極との間に位置する電解質を含む固体酸化物燃料電池。
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PCT/KR2014/009347 WO2015050409A1 (ko) | 2013-10-02 | 2014-10-02 | 고체 산화물 연료전지의 연료극 지지체 제조방법 및 고체 산화물 연료전지의 연료극 지지체 |
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CN109923715B (zh) * | 2016-11-07 | 2020-11-10 | 国立研究开发法人产业技术综合研究所 | 复合颗粒粉末、固体氧化物型电池用电极材料及使用其的固体氧化物型电池用电极 |
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US20020041991A1 (en) * | 1999-11-17 | 2002-04-11 | Chan Chung M. | Sol-gel derived fuel cell electrode structures and fuel cell electrode stack assemblies |
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US20160211541A1 (en) | 2016-07-21 |
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EP3054511A4 (en) | 2017-05-03 |
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