JP2008541362A - ガス拡散層、ならびにその装置およびその製造方法 - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
2層のガス拡散層を以下のように製造した。
実施例2では、その第1の層を実施例1の第1の層と同様にして製造したガス拡散層を開示する。第1の層は、実施例1の第1の層とは坪量が異なっているだけである。実施例2による第1の層の坪量は、100g/m2である。被覆体が第2の層の役割を果たしている。この被覆体は、坪量25g/m2を有し、カーボンブラック80%およびフェノール樹脂(ドイツBakelite社、型番9282 FP)20%からなる。この被覆体は点状であり、その点は0.5mmより小さい直径を有する。この被覆体によって、第1の層の片側の27%の面被覆が得られた。被覆体は、スクリーン印刷によって第1の層に塗布した。スクリーン印刷には、固形分、つまりカーボンブラックおよびフェノール樹脂20%および水80%からなるペーストを使用した。スクリーン印刷によるペーストの塗布後、温度120℃で乾燥を行ない、それにより水分を蒸発させた。温度200℃での熱処理過程によってフェノール樹脂を完全に反応させた。この製造ステップに続いて、化合物の炭化を窒素雰囲気下で1400℃で行なった。
Claims (25)
- 相互に作用結合した少なくとも2つの機能的な領域(2a,2b)を含み、第1の領域(2a)が多孔質構造を有し、第2の領域(2b)が安定化ゾーンとして形成されている、ガス拡散層(2)。
- 前記第1の領域(2a)が前記第2の領域(2b)より高い圧縮率を有する、請求項1に記載のガス拡散層。
- 前記第1の領域(2a)の弾性が前記第2の領域(2b)より高い、請求項1または2に記載のガス拡散層。
- 前記第1の領域(2a)が前記第2の領域(2b)より低い引張係数を有する、請求項1から3までのいずれか1項に記載のガス拡散層。
- 1GPa未満の曲げ弾性率を特徴とする、請求項1から4までのいずれか1項に記載のガス拡散層。
- 前記領域(2a,2b)が層もしくは平らな層として形成されている、請求項1から5までのいずれか1項に記載のガス拡散層。
- 前記領域(2a,2b)が不織布、織物、編地、格子または網として形成されている、請求項1から6までのいずれか1項に記載のガス拡散層。
- 前記第1の領域(2a)が、炭素繊維を含む不織布として形成されている、請求項1から7までのいずれか1項に記載のガス拡散層。
- 前記不織布が、結合繊維を30重量%まで含み、坪量30〜300g/m2を有する、請求項8に記載のガス拡散層。
- 前記不織布が、流体流によって固化され、カレンダー処理によって圧縮されている、請求項8または9に記載のガス拡散層。
- 前記不織布が800〜2500℃で炭化されている、請求項8から10までのいずれか1項に記載のガス拡散層。
- 前記前記第2の領域(2b)が湿式で製作された不織布を含む、請求項1から11までのいずれか1項に記載のガス拡散層。
- 前記第2の領域(2b)が被覆体として形成されている、請求項1から11までのいずれか1項に記載のガス拡散層。
- 前記被覆体が、炭化可能な結合剤を含む、請求項13に記載のガス拡散層。
- 前記被覆体が坪量1〜100g/m2を有する、請求項13または14に記載のガス拡散層。
- 前記被覆体が樹脂および/または熱可塑性材料を含む、請求項13から15までのいずれか1項に記載のガス拡散層。
- 前記第2の領域(2b)が、ポリビニルアルコール、カーボンブラック、グラファイト、金属、炭素繊維または金属繊維を含む、請求項13から16までのいずれか1項に記載のガス拡散層。
- 漸増的な構造を特徴とする、請求項1から17までのいずれか1項に記載のガス拡散層。
- ガス拡散層がその第1の領域(2a)で向かい合わせになっており、第2の領域(2b)が相互に離反するように配向している、請求項1から18までのいずれか1項に記載の2つのガス拡散層を含む装置。
- 多孔質構造を有する第1の領域(2a)に、安定化ゾーンとして形成されている第2の領域(2b)を配設させる、請求項1から18までのいずれか1項に記載のガス拡散層の製造方法。
- 前記領域(2a,2b)を一緒に炭化または黒鉛化する、請求項20に記載の方法。
- 前記領域(2a,2b)を、押圧0.1〜40MPaおよび温度20〜400℃で押し合わせる、請求項20または21に記載の方法。
- 前記第1の領域(2a)に固化を施す、請求項20から22までのいずれか1項に記載の方法。
- 少なくとも1つの領域(2a,2b)に段階的な熱処理を2500℃までの温度で施す、請求項20から23までのいずれか1項に記載の方法。
- 個々の方法ステップを複数回繰り返す、請求項20から24までのいずれか1項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102005022484.9A DE102005022484B4 (de) | 2005-05-11 | 2005-05-11 | Gasdiffusionsschicht und Anordnung umfassend zwei Gasdiffusionsschichten |
DE102005022484.9 | 2005-05-11 | ||
PCT/EP2006/002927 WO2006119825A1 (de) | 2005-05-11 | 2006-03-31 | Gasdiffusionsschicht, anordnung und verfahren zur herstellung einer gasdiffusionsschicht |
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JP2008541362A true JP2008541362A (ja) | 2008-11-20 |
JP5227792B2 JP5227792B2 (ja) | 2013-07-03 |
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US (1) | US20090061710A1 (ja) |
EP (1) | EP1886367B1 (ja) |
JP (1) | JP5227792B2 (ja) |
KR (1) | KR20070107172A (ja) |
CN (1) | CN101171713A (ja) |
AT (1) | ATE510312T1 (ja) |
CA (1) | CA2607842C (ja) |
DE (1) | DE102005022484B4 (ja) |
WO (1) | WO2006119825A1 (ja) |
Cited By (1)
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JP2018152270A (ja) * | 2017-03-14 | 2018-09-27 | アイシン化工株式会社 | 燃料電池用ガス拡散層及びその製造方法 |
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US8409769B2 (en) * | 2007-12-07 | 2013-04-02 | GM Global Technology Operations LLC | Gas diffusion layer for fuel cell |
CN101638794B (zh) * | 2009-06-01 | 2012-05-30 | 新奥科技发展有限公司 | 金属扩散层及包含它的膜电极组件 |
US20110229785A1 (en) * | 2010-03-17 | 2011-09-22 | Kah-Young Song | Fuel cell stack and fuel cell system having the same |
DE102019131343A1 (de) | 2019-11-20 | 2021-05-20 | Carl Freudenberg Kg | Gasdiffusionslage für Brennstoffzellen |
DE102021108981A1 (de) | 2021-04-12 | 2022-10-13 | Audi Aktiengesellschaft | Brennstoffzellenstapel mit komprimierbarer Gewebestruktur |
CN114953635B (zh) * | 2022-05-30 | 2023-09-15 | 安徽天富环保科技材料有限公司 | 一种用于新能源电池气体扩散的活性碳纤维布 |
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- 2006-03-31 KR KR1020077022188A patent/KR20070107172A/ko not_active Application Discontinuation
- 2006-03-31 JP JP2008510426A patent/JP5227792B2/ja active Active
- 2006-03-31 CN CNA2006800160004A patent/CN101171713A/zh active Pending
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- 2006-03-31 EP EP06707655A patent/EP1886367B1/de active Active
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Also Published As
Publication number | Publication date |
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EP1886367A1 (de) | 2008-02-13 |
US20090061710A1 (en) | 2009-03-05 |
ATE510312T1 (de) | 2011-06-15 |
DE102005022484A1 (de) | 2006-11-16 |
CA2607842C (en) | 2012-03-27 |
EP1886367B1 (de) | 2011-05-18 |
JP5227792B2 (ja) | 2013-07-03 |
CN101171713A (zh) | 2008-04-30 |
CA2607842A1 (en) | 2006-11-16 |
DE102005022484B4 (de) | 2016-02-18 |
KR20070107172A (ko) | 2007-11-06 |
WO2006119825A1 (de) | 2006-11-16 |
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