JP2010526402A - 燃料電池の改良 - Google Patents
燃料電池の改良 Download PDFInfo
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Abstract
【選択図】図1b
Description
(ii)該触媒前駆体をマスク又は所定の堆積経路を用いて所定のパターンに堆積し、
(iii)前駆体層を700℃まで焼成し、
(iv)触媒をインクジェット印刷法を用いて堆積し、
(v)触媒を300−600℃で焼成する工程を備えるのが好ましい。
(ii)該触媒前駆体をその表面に堆積した触媒と共に、マスク又はインクジェット印刷法を用いて画成した堆積経路を用いて所定のパターンに堆積し、
(iii)前駆体層を700℃まで焼成する工程を備えるのが好ましい。
A)
1.金属のシート(50〜100ミクロン厚)、例えばクロフェル22APUやEU基準1.4509のような金属の相互接続プレートの形成。
2.形成したシートやプレートの洗浄、乾燥。
3.空気中で1,000℃まで焼成して鋼の上に優れた付着層を設けることによるシートやプレートの予備酸化。
4.薄め塗布や噴霧のような古典的な技法による触媒前駆体の堆積。前駆体は例えばアルミナやセリアとすることができる。マスク又は所定の堆積経路を用いて所定のパターンに堆積。
5.前駆体層の700℃までの焼成。
6.薄め塗布、噴霧、インクジェット印刷のような古典的技法を用いる所定の方法で塩の水溶液のような触媒の堆積。
7.触媒の300〜600℃での焼成。
もうひとつの方法は、前駆体を予備被覆した前駆体として堆積、すなわち、前駆体の表面上にあらかじめ金属触媒を堆積すること含む。この場合、上記6及び7の工程は不要である。
・CPOXを点火する。
・バーナー組立体及び高温改質物流を用いて燃料電池スタックを加熱する。
・燃料電池スタック中でのアノード反応がおよそ400〜500℃で始まる。
・この時点で、スタックが運転可能となり、バーナー燃料を削減又は分離できる。
・レドックスに安定な燃料電池
o改質装置、従って燃料電池スタックへの燃料供給を停止する。
o所要に応じて燃料電池スタックのカソード側を介して空気を流す。
・非レドックスに安定な燃料電池
o改質装置、従って燃料電池スタックへの燃料流出を絞る。
oカソード側に空気を送風し続ける。
oスタックの温度が低下する。およそ300℃(アノードにおける触媒用の酸化還元温度以下)の燃料電池スタックの温度で燃料供給を遮断し、スタックを自然冷却することができる。
o所要に応じて、カソード側を介して空気を流す
Claims (11)
- 一酸化炭素のリッチな燃料を燃料電池のアノード領域に供給し、該燃料がアノードの領域内の水性ガスシフト反応触媒と接触した後に、水性ガスシフト反応が燃料中の残留水の存在及び/又はアノードで発生した蒸気により起こる工程を備える中温域固体酸化物燃料電池への燃料供給方法。
- アノードと、該アノードから離れたカソードと、前記アノードとカソード間の気体不透過性の電解質と、酸化剤をカソードに供給するための第一の手段と、燃料をアノードに供給するための第二の手段とを備え、前記第二手段が前記アノードに近接配置して前記燃料中の一酸化炭素と該燃料中の残留物として又は該アノードでの反応による生起する水/蒸気の間で水性ガスシフト反応を触媒するため水性ガスシフト反応触媒を備えることを特徴とする燃料電池組立体。
- 前記燃料をアノードに多孔質領域の壁を有するチャンバーを介して供給し、該アノードをチェンバー外で多孔質領域に隣接して配置し、前記燃料を多孔質領域を通ってアノードと接触させ、水性ガスシフト反応触媒を前記多孔質領域に近接するが、それから離間して前記チェンバー内に配置する請求項2に記載の燃料電池組立体。
- 前記触媒をチェンバー内の壁上で多孔質領域の細孔の間に、該細孔が燃料の通過用に開口しているように配置する請求項2又は3に記載の燃料電池組立体。
- 前記触媒を前記壁の多孔質領域と対向関係であるが、わずかな距離で離間した支持体上に配置する請求項3に記載の燃料電池組立体。
- 前記支持体をチェンバーの第二の壁の内面で付与し、該第二の壁が水性ガスシフト反応触媒を搭載し、前記壁の多孔質領域と平行で、わずかな距離で離間して配置される請求項4に記載の燃料電池組立体。
- 前記支持体をチェンバーの第二壁の内面に載せた挿入体で付与し、該挿入体が水性ガスシフト反応触媒を搭載し、前記壁の多孔質領域と平行で、わずかな距離で離間して配置される請求項4に記載の燃料電池組立体。
- 添付図面を参照して実質的にここに記載した燃料電池組立体。
- 水性ガスシフト反応触媒を燃料電池用の金属基材上に配置するに当たり、該触媒を前記基材にインクジェット印刷法により塗布することを備える水性ガスシフト反応触媒の配置方法。
- (i)清浄な乾燥した基材を空気中で1000℃まで焼成することにより予備酸化して優れた密着層を金属上に設け、
(ii)該触媒前駆体をマスク又は所定の堆積経路を用いて所定のパターンに堆積し、
(iii)前駆体層を700℃まで焼成し、
(iv)触媒をインクジェット印刷法を用いて堆積し、
(v)触媒を300−600℃で焼成する工程を備える請求項6に記載の水性ガスシフト反応触媒を燃料電池用の金属基材上に配置する方法。 - (i)清浄な乾燥した基材を空気中で1000℃まで焼成することにより予備酸化して優れた密着層を金属上に設け、
(ii)該触媒前駆体をその表面に堆積した触媒と共に、マスク又はインクジェット印刷法を用いて画成した堆積経路を用いて所定のパターンに堆積し、
(iii)前駆体層を700℃まで焼成する工程を備える請求項6に記載の水性ガスシフト反応触媒を燃料電池用の金属基材上に配置する方法。
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PCT/GB2008/001543 WO2008132493A2 (en) | 2007-05-01 | 2008-05-01 | Improvements in or relating to fuel cells |
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