JP2011034688A - 固体酸化物型燃料電池及び固体酸化物型燃料電池の製造方法 - Google Patents
固体酸化物型燃料電池及び固体酸化物型燃料電池の製造方法 Download PDFInfo
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
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- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
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- 239000011195 cermet Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
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Abstract
【解決手段】固体酸化物型燃料電池1は、複数のアノード2と、複数のカソード3とを有しており、アノード2とカソード3との一部が重ならない非重なり部6を有して交互に積層される。複数のアノード2は、第1電極11により電気的に接続され、複数のカソード3は、第2電極12により電気的に接続される。また、少なくともアノード2とカソード3との間には、固体電解質4が設けられる。それぞれのカソード3と第1電極11との間、及びそれぞれのアノード2と第2電極12との間には、仕切り部5a、5cが配置される。
【選択図】図2
Description
カソード:1/2O2+2e−→O2−
アノード:O2−+H2→H2O+2e−
全体:1/2O2+H2→H2O
となる。なお、本実施形態で対象とする燃料電池は固体酸化物型燃料電池(以下、SOFC(Solid Oxide Fuel Cell)という)であるが、SOFCは、H2以外(例えば、CO)も燃料として使用できる。
図18は、本実施形態に係るSOFCの評価方法を説明する図である。上述した本実施形態に係るSOFCの製造方法によって作製されたSOFC1は、アノード側である第1電極11側とカソード側である第2電極12側とをそれぞれ異なる空間に配置して作動させる。SOFC1は、供試体支持板50に取り付けられる。そして、供試体支持板50には、第1電極11側にアノード側カバー52が取り付けられ、第2電極12側にカソード側カバー54が取り付けられる。アノード側カバー52とカソード側カバー54とは、供試体支持板50によって仕切られる。第1電極11側が燃料供給空間51、第2電極12側が酸素供給空間53となる。また、SOFC1の外側にはヒーター55が配置され、発電試験時にはヒーター55によってSOFC1が加熱される。
Wρ1=n×W/(a×(2×n+1)×c)・・(1)
Wρ2=W/(b×c)・・(2)
Wρv1=n×W/(a×(2×n+1)×c×b)・・(3)
Wρv2=W/(3×a×b×c)・・(4)
2、2a アノード
3、3a カソード
4、4a 固体電解質
5a、5c 仕切り部
6 非重なり部
11、11a 第1電極
12、12a 第2電極
13、14 気体通路
20 グリーンシート
21 電極層
22 余白部
23 余白層
25 単位シート
26 積層体
27 気体通路形成剤
28 部品単位積層体
30 支持体
31 積層台
100 発電ユニット
101 基板
Claims (10)
- 複数のアノード及び複数のカソードが、前記アノードと前記カソードとの一部が重ならない非重なり部を有して交互に積層されるとともに、
少なくとも前記アノードと前記カソードとの間に配置される固体電解質と、
隣接する前記固体電解質同士の間であって前記非重なり部側に配置されて、前記固体電解質同士を接続する仕切り部と、を含み、
前記複数のアノードと前記複数のカソードと前記固体電解質と前記仕切り部とが一体で構成されることを特徴とする固体酸化物型燃料電池。 - 所定間隔を設けて配列される複数のアノードと、
前記アノードと対向し、かつ前記アノードと交互に積層されて配置される複数のカソードと、
前記複数のアノードを電気的に接続する第1電極と、
前記第1電極と対向して配置されるとともに、前記複数のカソードを電気的に接続する第2電極と、
少なくとも前記アノードと前記カソードとの間に配置される固体電解質と、
それぞれの前記カソードと前記第1電極との間、及びそれぞれの前記アノードと前記第2電極との間に配置される仕切り部と、
を含み、これらが一体で構成されることを特徴とする固体酸化物型燃料電池。 - 前記仕切り部は、隣接する前記固体電解質同士を接続することを特徴とする請求項2に記載の固体酸化物型燃料電池。
- 前記仕切り部は、前記固体電解質と同じ材料であることを特徴とする請求項1から3のいずれか1項に記載の固体酸化物型燃料電池。
- 前記仕切り部は、前記固体電解質よりも電子伝導度が低い材料であることを特徴とする請求項1から3のいずれか1項に記載の固体酸化物型燃料電池。
- 前記アノードと前記カソードとの少なくとも一方は多孔質であることを特徴とする請求項1から5のいずれか1項に記載の固体酸化物型燃料電池。
- 前記アノードと前記カソードとの少なくとも一方には、気体を通過させる通路が設けられることを特徴とする請求項1から5のいずれか1項に記載の固体酸化物型燃料電池。
- 固体電解質用スラリー及び電極用スラリーを作製する工程と、
前記固体電解質用スラリーを塗布しグリーンシートを形成する工程と、
前記グリーンシートに余白部を残して前記電極用スラリーを塗布するとともに、前記余白部に余白層を形成して、単位シートを形成する工程と、
前記単位シートを積み重ねて積層体を形成する工程と、
前記積層体を加圧した後に裁断して、部品単位積層体を作製する工程と、
前記部品単位積層体を乾燥させる工程と、
乾燥後の前記部品単位積層体を焼成する工程と、
を含むことを特徴とする固体酸化物型燃料電池の製造方法。 - 前記電極用スラリーには、空隙形成剤が混入されることを特徴とする請求項8に記載の固体酸化物型燃料電池の製造方法。
- 焼成後の前記部品単位積層体に対して焼き鈍し処理を施すことを特徴とする請求項8又は9に記載の固体酸化物型燃料電池の製造方法。
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