JP2007137754A - メソ細孔性炭素とその製造方法、それを利用した担持触媒及び燃料電池 - Google Patents
メソ細孔性炭素とその製造方法、それを利用した担持触媒及び燃料電池 Download PDFInfo
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- JP2007137754A JP2007137754A JP2006153954A JP2006153954A JP2007137754A JP 2007137754 A JP2007137754 A JP 2007137754A JP 2006153954 A JP2006153954 A JP 2006153954A JP 2006153954 A JP2006153954 A JP 2006153954A JP 2007137754 A JP2007137754 A JP 2007137754A
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- Prior art keywords
- carbon
- mesoporous
- mesoporous carbon
- mass
- supported catalyst
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- CFQCIHVMOFOCGH-UHFFFAOYSA-N platinum ruthenium Chemical compound [Ru].[Pt] CFQCIHVMOFOCGH-UHFFFAOYSA-N 0.000 description 2
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- 229910002849 PtRu Inorganic materials 0.000 description 1
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- H—ELECTRICITY
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
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- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Inert Electrodes (AREA)
- Carbon And Carbon Compounds (AREA)
- Catalysts (AREA)
Abstract
【解決手段】メソ相ピッチ、炭素前駆体、酸及び溶媒を混合して炭素前駆体混合物を得る工程と、メソ細孔性シリカに炭素前駆体混合物を含浸し、これを熱処理及び炭化を実施してメソ細孔性シリカ−炭素複合体を形成する工程と、メソ細孔性シリカ−炭素複合体からメソ細孔性シリカを除去する工程と、を含むことを特徴とするメソ細孔性炭素の製造方法である。これにより、得られたメソ細孔性炭素は、メソ相ピッチと炭素前駆体とを共に使用して面抵抗特性が向上して電気エネルギーを効率的に伝達でき、このようなメソ細孔性炭素は、燃料電池用電極の導電材料として利用でき、特に、電極の触媒担体として使用する場合、このような触媒担体を含有した担持触媒を利用すれば、効率などの性能が改善した燃料電池を製作できる。
【選択図】図1
Description
フェナントレン0.53g、メソ相ピッチ(MP)0.17g及び硫酸0.4gをアセトン6mLに完全に溶解させて均一な炭素前駆体混合物を製造した。ここで、フェナントレンとメソ相ピッチとの混合質量比は3:1であった。
炭素前駆体混合物の製造時、フェナントレンの代わりにフルフリルアルコールを使用したことを除いては、実施例1と同じ方法によって実施してメソ細孔性炭素を製造した。
炭素前駆体混合物の製造時、フェナントレンとMPとの混合質量比を1:1としたことを除いては、実施例1と同じ方法によって実施してメソ細孔性炭素を製造した。
炭素前駆体混合物の製造時、フェナントレンとMPとの混合質量比を1:3としたことを除いては、実施例1と同じ方法によって実施してメソ細孔性炭素を製造した。
炭素前駆体混合物の製造時、スクロースのみを使用したことを除いては、実施例1と同じ方法によって実施してメソ細孔性炭素を製造した。
炭素前駆体混合物の製造時、MPのみを使用したことを除いては、実施例1と同じ方法によって実施してメソ細孔性炭素を製造した。
前記実施例1によって得たメソ細孔性炭素0.5gをビニールバックに入れた後、H2PtCl6 0.9616gを1.5mlのアセトンに溶解させた。前記溶液を前記メソ細孔性炭素が入っているビニールバックに入れて混合した。
前記実施例1のメソ細孔性炭素の代わりに、前記比較例1で製造した結果物に対して、前記実施例5と同じ方法で白金を担持させて担持触媒及び燃料電池を製造した。
Claims (18)
- (a)メソ相ピッチ、炭素前駆体、酸及び溶媒を混合して炭素前駆体混合物を得る工程と、
(b)メソ細孔性シリカに前記炭素前駆体混合物を含浸し、それを熱処理及び炭化を実施してメソ細孔性シリカ−炭素複合体を形成する工程と、
(c)前記メソ細孔性シリカ−炭素複合体からメソ細孔性シリカを除去する工程と、
を含むことを特徴とする、メソ細孔性炭素の製造方法。 - 前記メソ相ピッチと前記炭素前駆体との混合質量比は、1:1〜1:4であることを特徴とする、請求項1に記載のメソ細孔性炭素の製造方法。
- 前記炭素前駆体は、炭水化物類、フルフリルアルコール、ジビニルベンゼン、フェノール−ホルムアルデヒド、レゾルシノール−ホルムアルデヒド、フェナントレン及びアントラセンからなる群から選択された何れか一つ以上であることを特徴とする、請求項1に記載のメソ細孔性炭素の製造方法。
- 前記メソ相ピッチと前記炭素前駆体の総含量は、前記メソ細孔性シリカ100質量部に対して、50〜120質量部であることを特徴とする、請求項1に記載のメソ細孔性炭素の製造方法。
- 前記酸は、硫酸、硝酸、リン酸及びp−トルエンスルホン酸からなる群から選択された何れか一つ以上であることを特徴とする、請求項1に記載のメソ細孔性炭素の製造方法。
- 前記溶媒は、水、アセトン、メタノール、エタノール、イソプロピルアルコール、n−プロピルアルコール、ブタノール、ジメチルアセトアミド、ジメチルホルムアミド、ジメチルスルホキシド、N−メチル−2−ピロリドン、テトラヒドロフラン、テトラ酢酸ブチル、n−酢酸ブチル、m−クレゾール、トルエン、エチレングリコール、γ−ブチロラクトン及びヘキサフルオロイソプロパノール(HFIP)からなる群から選択された何れか一つ以上であることを特徴とする、請求項1に記載のメソ細孔性炭素の製造方法。
- 前記酸の含量は、前記メソ細孔性シリカ100質量部に対して、30〜300質量部であり、
前記溶媒の含量は、前記メソ細孔性シリカ100質量部に対して、400〜900質量部であることを特徴とする、請求項1に記載のメソ細孔性炭素の製造方法。 - 請求項1〜7のうち何れか1項に記載の方法によって製造されたメソ細孔を有するメソ細孔性炭素。
- CuK−α特性X線波長1.541Åに対するブラッグ2θ角の主ピークが、0.5°−2°、23°−26°または0.5°−2°と23°−26°とで一つ以上現れることを特徴とする、請求項8に記載のメソ細孔性炭素。
- 前記メソ細孔の平均直径が2〜10nmであり、比表面積が200〜2000m2/gであり、面抵抗が75.4kgf/cm2で1〜50mΩ/cm2であることを特徴とする、請求項8に記載のメソ細孔性炭素。
- 請求項1〜7のうち何れか1項に記載の方法によって製造されたメソ細孔を有するメソ細孔性炭素と、
前記メソ細孔性炭素に担持された金属触媒粒子と、
を含むことを特徴とする、担持触媒。 - 前記金属触媒粒子の含量は、前記担持触媒100質量部を基準として40〜80質量部であることを特徴とする、請求項11に記載の担持触媒。
- 前記メソ細孔性炭素のCuK−α特性X線波長1.541Åに対するブラッグ2θ角の主ピークが、0.5°−2°、23°−26°または0.5°−2°と23°−26°とで一つ以上現れることを特徴とする、請求項11に記載の担持触媒。
- 前記メソ細孔性炭素のメソ細孔の平均直径が2〜10nmであり、比表面積が200〜2000m2/gであり、面抵抗が75.4kgf/cm2で1〜50mΩ/cm2であることを特徴とする、請求項13に記載の担持触媒。
- カソード、アノード及び前記カソードとアノードとの間に介在された電解質を含む燃料電池において、
前記カソードと前記アノードのうち少なくとも一つが請求項11に記載の担持触媒を含有することを特徴とする、燃料電池。 - 前記金属触媒粒子の含量は、前記担持触媒100質量部を基準として40〜80質量部であることを特徴とする、請求項15に記載の燃料電池。
- 前記担持触媒を構成するメソ細孔性炭素のCuK−α特性X線波長1.541Åに対するブラッグ2θ角の主ピークが、0.5°−2°、23°−26°または0.5°−2°と23°−26°とで一つ以上現れることを特徴とする請求項15に記載の燃料電池。
- 前記担持触媒を構成するメソ細孔性炭素のメソ細孔の平均径が2〜10nmであり、比表面積が200〜2000m2/gであり、面抵抗が75.4kgf/cm2で1〜50mΩ/cm2であることを特徴とする、請求項15に記載の燃料電池。
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JP2014055110A (ja) * | 2008-02-26 | 2014-03-27 | Nissan Motor Co Ltd | ミクロポーラス炭素系材料の製造方法 |
WO2014175101A1 (ja) * | 2013-04-25 | 2014-10-30 | 日産自動車株式会社 | 触媒の製造方法ならびに当該触媒を用いる電極触媒層、膜電極接合体および燃料電池 |
WO2014175107A1 (ja) * | 2013-04-25 | 2014-10-30 | 日産自動車株式会社 | 触媒ならびに当該触媒を用いる電極触媒層、膜電極接合体および燃料電池 |
JP5998276B2 (ja) * | 2013-04-25 | 2016-09-28 | 日産自動車株式会社 | 触媒の製造方法ならびに当該触媒を用いる電極触媒層、膜電極接合体および燃料電池 |
JP6008044B2 (ja) * | 2013-04-25 | 2016-10-19 | 日産自動車株式会社 | 燃料電池用触媒ならびに当該燃料電池用触媒を用いる電極触媒層、膜電極接合体および燃料電池 |
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CN1970443B (zh) | 2010-09-08 |
JP4912044B2 (ja) | 2012-04-04 |
US7776779B2 (en) | 2010-08-17 |
CN1970443A (zh) | 2007-05-30 |
US20070116625A1 (en) | 2007-05-24 |
KR100708730B1 (ko) | 2007-04-17 |
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