JP2009026602A - 燃料電池およびその触媒層を構成する電極粉末 - Google Patents
燃料電池およびその触媒層を構成する電極粉末 Download PDFInfo
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Abstract
【解決手段】電解質膜10の両面に触媒層13を備えた膜電極接合体を持つ燃料電池において、触媒層13を構成する電極粉末を、その水蒸気吸着量が水の吸着等温線から求まる水蒸気分圧0.6での値が52〜70cm3(STP)/gの範囲のものとする。この範囲の水蒸気吸着量を持つ電極粉末を用いて触媒層を持つ燃料電池は、低加湿条件および高加湿条件において、0.6A/cm2 0.6V以上の電流密度である出力性能を備える。
【選択図】図2
Description
(1)表1に示す、触媒担持カーボンである導電性材料と電解質樹脂(Nafion:商標名)からなる5種類の電極粉末を調整し、テフロンシート上にキャスティングした。乾燥後、テフロンシートからかき取り粉末状態の電極粉末試料を得た。前処理として、その粉末を真空下で120℃、8Hr保持し、吸着水を脱離除去した。その試料を、試料温度を50℃に制御し、水蒸気分圧を徐々に上げながら圧力変化に伴う試料への水蒸気吸着量を求め、図1に示す水の吸着等温線のグラフを得た。各試料の水蒸気分圧0.6(P/Po)での水蒸気吸着量Va(cm3(STP)/g)を表1に示した。なお、STPは標準値であることを示す。また、水蒸気吸着量が直線的に増加する領域の代表点として、水蒸気分圧0.6を選択し、その水蒸気吸着量Vaを求めた。
Claims (2)
- 電解質膜の両面に触媒層を備えた膜電極接合体を持つ燃料電池であって、前記触媒層を構成する電極粉末は、その水蒸気吸着量が水の吸着等温線から求まる水蒸気分圧0.6での値が52〜70cm3(STP)/gの範囲のものであることを特徴とする燃料電池。
- 燃料電池の膜電極接合体における触媒層を構成する電極粉末であって、その水蒸気吸着量が水の吸着等温線から求まる水蒸気分圧0.6での値が52〜70cm3(STP)/gの範囲であることを特徴とする電極粉末。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2007188465A JP4930241B2 (ja) | 2007-07-19 | 2007-07-19 | 燃料電池およびその触媒層を構成する電極粉末 |
CN200880023324A CN101689639A (zh) | 2007-07-19 | 2008-07-18 | 燃料电池和构成其催化剂层的电极粉末 |
DE112008001878T DE112008001878B8 (de) | 2007-07-19 | 2008-07-18 | Brennstoffzelle und die katalytische Schicht derselben bildendes Elektrodenpulver |
US12/668,454 US8415073B2 (en) | 2007-07-19 | 2008-07-18 | Fuel cell and electrode powder constituting the catalytic layer thereof |
PCT/JP2008/063459 WO2009011464A1 (ja) | 2007-07-19 | 2008-07-18 | 燃料電池およびその触媒層を構成する電極粉末 |
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JP2007188465A JP4930241B2 (ja) | 2007-07-19 | 2007-07-19 | 燃料電池およびその触媒層を構成する電極粉末 |
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JP2009026602A true JP2009026602A (ja) | 2009-02-05 |
JP4930241B2 JP4930241B2 (ja) | 2012-05-16 |
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US (1) | US8415073B2 (ja) |
JP (1) | JP4930241B2 (ja) |
CN (1) | CN101689639A (ja) |
DE (1) | DE112008001878B8 (ja) |
WO (1) | WO2009011464A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011146321A (ja) * | 2010-01-18 | 2011-07-28 | Nippon Steel Corp | 固体高分子型燃料電池用触媒及びこれを用いた固体高分子型燃料電池用電極 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003109643A (ja) * | 2001-09-28 | 2003-04-11 | Nippon Steel Corp | 燃料電池 |
JP2005332807A (ja) * | 2004-04-22 | 2005-12-02 | Nippon Steel Corp | 燃料電池 |
JP2006120335A (ja) * | 2004-10-19 | 2006-05-11 | Nippon Steel Corp | 燃料電池用ガス拡散層、燃料電池用ガス拡散電極及び燃料電池 |
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JPH10334922A (ja) | 1997-05-29 | 1998-12-18 | Hitachi Ltd | 固体高分子型燃料電池及び該固体高分子型燃料電池の製造方法 |
JP2002042824A (ja) | 2000-07-19 | 2002-02-08 | Fuji Electric Co Ltd | 固体高分子型燃料電池およびその製造方法 |
JP3433169B2 (ja) | 2000-09-22 | 2003-08-04 | 本田技研工業株式会社 | 固体高分子型燃料電池 |
CN100466345C (zh) | 2004-04-22 | 2009-03-04 | 新日本制铁株式会社 | 燃料电池和燃料电池用气体扩散电极 |
EP1748509B1 (en) | 2004-04-22 | 2017-03-01 | Nippon Steel & Sumitomo Metal Corporation | Fuel cell and gas diffusion electrode for fuel cell |
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- 2008-07-18 WO PCT/JP2008/063459 patent/WO2009011464A1/ja active Application Filing
- 2008-07-18 CN CN200880023324A patent/CN101689639A/zh active Pending
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003109643A (ja) * | 2001-09-28 | 2003-04-11 | Nippon Steel Corp | 燃料電池 |
JP2005332807A (ja) * | 2004-04-22 | 2005-12-02 | Nippon Steel Corp | 燃料電池 |
JP2006120335A (ja) * | 2004-10-19 | 2006-05-11 | Nippon Steel Corp | 燃料電池用ガス拡散層、燃料電池用ガス拡散電極及び燃料電池 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011146321A (ja) * | 2010-01-18 | 2011-07-28 | Nippon Steel Corp | 固体高分子型燃料電池用触媒及びこれを用いた固体高分子型燃料電池用電極 |
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Publication number | Publication date |
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US20100209808A1 (en) | 2010-08-19 |
DE112008001878B8 (de) | 2013-05-29 |
US8415073B2 (en) | 2013-04-09 |
CN101689639A (zh) | 2010-03-31 |
DE112008001878T5 (de) | 2010-05-27 |
JP4930241B2 (ja) | 2012-05-16 |
WO2009011464A1 (ja) | 2009-01-22 |
DE112008001878B4 (de) | 2013-03-14 |
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