JP6305348B2 - 電気化学的用途のためのメソ多孔性黒鉛粒子の使用 - Google Patents
電気化学的用途のためのメソ多孔性黒鉛粒子の使用 Download PDFInfo
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- JP6305348B2 JP6305348B2 JP2014555942A JP2014555942A JP6305348B2 JP 6305348 B2 JP6305348 B2 JP 6305348B2 JP 2014555942 A JP2014555942 A JP 2014555942A JP 2014555942 A JP2014555942 A JP 2014555942A JP 6305348 B2 JP6305348 B2 JP 6305348B2
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Classifications
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Description
− メソ多孔性基本骨格を有する粒子を、特に溶液の黒鉛化性/炭素化性有機化合物で含浸し、
− こうして得られた粒子を、多孔性基本骨格における黒鉛骨格の形成のために、高温黒鉛化工程に掛け、
− こうして得られた黒鉛化粒子、いわゆるn−HGS−(中空黒鉛球)粒子を、基本骨格を除去しかつメソ多孔性黒鉛骨格を得るための方法に掛け、
− こうして得られたメソ多孔性黒鉛粒子(n−HGS粒子)を、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Al、Mo、Se、Sn、Pt、Ru、Pd、W、Ir、Os、Rh、Nb、Ta、Pb、Bi、Au、Ag、Sc、Yおよびこれらの混合物から選択された触媒活性金属の塩の溶液で含浸し、
− こうして得られたメソ多孔性黒鉛粒子を、メソ多孔性粒子の細孔上および/または細孔内での触媒活性金属粒子の取得のために、水素化工程に掛ける方法により得ることができる。
− 広い比表面積は、反応体の収容に対して高められた容量をもたらし、ならびに沈殿させるべき触媒粒子に対して多数のアンカー部位をもたらすこと。
− シェル層内の小さな細孔は、触媒粒子の「捕捉/固定」によって、当該触媒粒子の安定性を高めること。
− 前記材料は、良好な導電率、排熱を搬出するための良好な熱伝導率および優れた耐食性を示すこと。
− 多孔性のために、粒子中への、および粒子を通しての、有効な水の輸送および酸素の輸送、ならびにさらなる流体物質、例えば水、水蒸気、アンモニア、メタノールならびにプロトン(H+)の輸送が可能であり、および別の用途に対して、水酸化物イオン(OH-)の輸送も可能であること。
− 表面構造が電極の触媒層内の電解質での粒子表面の良好な湿潤性を可能にし、このことは、元通りに、粒子シェル層内での触媒活性スポットの良好な保存性を可能を生じること。
− 前記材料の機械的安定性は、とりわけ、陽極と膜と陰極とからなる膜電極ユニットを圧縮する際に、良好な加工性を可能にすること。
Claims (7)
- 電気化学的用途における触媒としての、連続3D細孔構造における焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子(M−HGS)の使用であって、前記粒子が20nm〜50nmの層厚を有するメソ多孔性黒鉛シェルと、60nm〜440nmの直径を有する中空コアを有する中空球構造をもち、かつ、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Al、Mo、Se、Sn、Pt、Ru、Pd、W、Ir、Os、Rh、Nb、Ta、Pb、Bi、Au、Ag、ScおよびYから選択された触媒活性金属、またはこれらの組みあわせでのメソ多孔性黒鉛シェル金属負荷量が、M−HGSの全質量に対して、5〜50質量%であり、
その際に、焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子は、
− メソ多孔性基本骨格を有する粒子を、黒鉛化性/炭素化性有機化合物で含浸し、
− こうして得られた粒子を高温黒鉛化工程に掛け、その際に多孔性基本骨格における黒鉛骨格が形成され、
− こうして得られた黒鉛化粒子を、基本骨格を除去する工程に掛け、その際にメソ多孔性黒鉛骨格が得られ、
− こうして得られたメソ多孔性黒鉛粒子(n−HGS)を、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Al、Mo、Se、Sn、Pt、Ru、Pd、W、Ir、Os、Rh、Nb、Ta、Pb、Bi、Au、Ag、Sc、Yおよびこれらの混合物から選択された触媒活性金属の塩の溶液で含浸し、
− こうして得られたメソ多孔性黒鉛粒子を、メソ多孔性粒子の細孔上および/または細孔内での触媒活性金属粒子の取得のために、水素化工程に掛け、
− こうして得られた、金属負荷を有するメソ多孔性黒鉛粒子を、600℃〜1000℃の温度範囲内でか焼する方法により得ることができる、前記使用。 - 焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子(M−HGS)がFe、Co、Ni、Cu、Ru、Pd、Au、Ag、Sn、Mo、Mn、Y、Scの少なくとも1つとともにPtから選択された触媒活性金属を有するメソ多孔性黒鉛シェルの負荷を有する、請求項1記載の焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子の使用。
- 電気化学的セルにおける電極の成分としての、請求項1または2記載の焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子の使用。
- 燃料電池における酸化触媒(陽極)としての、請求項1または2記載の焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子の使用。
- 燃料電池における還元触媒(陰極)としての、請求項1または2記載の焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子の使用。
- 金属ナノ粒子の負荷なしのメソ多孔性黒鉛粒子(n−HGS)との組みあわせにおける、請求項1または2記載の焼結安定性の金属ナノ粒子の負荷を有するメソ多孔性黒鉛粒子の使用であって、前記n−HGSが、20nm〜50nmの層厚を有するメソ多孔性黒鉛シェルと、60nm〜440nmの直径を有する中空コアを有する中空球構造をもち、その際に、前記n−HGSは、
− メソ多孔性基本骨格を有する粒子を、黒鉛化性/炭素化性有機化合物で含浸し、
− こうして得られた粒子を高温黒鉛化工程に掛け、その際に多孔性基本骨格における黒鉛骨格が形成され、
− こうして得られた黒鉛化粒子を、基本骨格を除去する工程に掛け、その際にメソ多孔性黒鉛骨格が得られる方法により得ることができる、前記使用。 - 電気化学的用途が燃料電池、電気化学的セル、電気化学的リフォーマーの膜電極ユニット(MEA)の層構造における層成分として、あるいは蓄電池の電極層の成分としての使用を含む、請求項1、2または6に記載の使用。
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DE102012102120A DE102012102120A1 (de) | 2012-02-08 | 2012-03-13 | Verwendung von mesoporösen graphitischen Teilchen für elektrochemische Anwendungen |
DE102012102120.1 | 2012-03-13 | ||
PCT/DE2013/100046 WO2013117192A1 (de) | 2012-02-08 | 2013-02-08 | Verwendung von mesoporösen graphitischen teilchen für elektrochemische anwendungen |
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CN104159666A (zh) | 2014-11-19 |
EP2812114A1 (de) | 2014-12-17 |
CN104159666B (zh) | 2017-02-22 |
CN104093482A (zh) | 2014-10-08 |
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KR102144419B1 (ko) | 2020-08-13 |
US20150017555A1 (en) | 2015-01-15 |
KR20140126330A (ko) | 2014-10-30 |
EP2812110B1 (en) | 2023-12-13 |
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EP2626131A1 (en) | 2013-08-14 |
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JP2015513449A (ja) | 2015-05-14 |
JP6305349B2 (ja) | 2018-04-04 |
WO2013117725A1 (en) | 2013-08-15 |
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