JP5164373B2 - 固体高分子型燃料電池用触媒 - Google Patents
固体高分子型燃料電池用触媒 Download PDFInfo
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- JP5164373B2 JP5164373B2 JP2006342276A JP2006342276A JP5164373B2 JP 5164373 B2 JP5164373 B2 JP 5164373B2 JP 2006342276 A JP2006342276 A JP 2006342276A JP 2006342276 A JP2006342276 A JP 2006342276A JP 5164373 B2 JP5164373 B2 JP 5164373B2
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- fuel cell
- polymer electrolyte
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Description
炭素担体0.25gを蒸留水100mLに入れ、超音波によって分散させた後、オイルバスに入れて加熱撹拌した。その後、水酸化ナトリウムを更に入れてpHを一定に調製した上で、ポリビニルピロリドンを混合した0.02mol/Lのヘキサクロロ白金(IV)酸六水和物の水溶液と0.5mol/Lのホルムアルデヒド水溶液をゆっくり入れて混合し、攪拌後、濾過、洗浄を行った。得られた固形物を90℃で真空乾燥した後、粉砕して触媒を作製した。ここで、ヘキサクロロ白金(IV)酸六水和物水溶液とホルムアルデヒド水溶液の混合量、ポリビニルピロリドンの混合量、pH、炭素担体のBET法による比表面積を表1のように変え、触媒No.1〜No.17を得た。更に、触媒No.5を水素雰囲気中200℃で1時間熱処理することによって、触媒No.18を得た。ここで、炭素担体のBET法による比表面積は、窒素吸着比表面積であり、120℃で真空乾燥したサンプルを自動比表面積測定装置(日本ベル製、BELSORP36)を用いて窒素ガスにて測定し、BET法に基づく1点法にて窒素吸着比表面積を決定した。
Claims (7)
- 炭素担体に金属元素として白金元素のみ含む触媒活性成分を担持した触媒であって、担持量が白金の金属換算で10質量%〜80質量%であり、X線吸収端微細構造スペクトル法(XAFS)の測定で得られる白金原子からの距離が0.18〜0.22nmの最近接原子である酸素原子のピーク強度Xが、0.26〜0.30nmのピーク強度Yに対して、X/Y比で2.7以上10以下であることを特徴とする固体高分子型燃料電池用触媒。
- 炭素担体に金属元素として白金元素のみ含む触媒活性成分を担持した触媒であって、担持量が白金の金属換算で10質量%〜80質量%であり、X線吸収端微細構造スペクトル法(XAFS)の測定で得られる白金原子からの距離が0.18〜0.22nmの最近接原子である酸素原子のピーク強度Xが、0.26〜0.30nmのピーク強度Yに対して、X/Y比で1以上10以下である固体高分子型燃料電池用触媒であって、X線(CuKα線)回折法で測定された回折角2θが32度から36度の範囲で回折ピークを示し、前記回折ピークの半値幅が5度以上20度以下であることを特徴とする固体高分子型燃料電池用触媒。
- 炭素担体に金属元素として白金元素のみ含む触媒活性成分を担持した触媒であって、担持量が白金の金属換算で10質量%〜80質量%であり、X線吸収端微細構造スペクトル法(XAFS)の測定で得られる白金原子からの距離が0.18〜0.22nmの最近接原子である酸素原子のピーク強度Xが、0.26〜0.30nmのピーク強度Yに対して、X/Y比で2以上10以下である固体高分子型燃料電池用触媒であって、X線(CuKα線)回折法で測定された回折角2θが32度から36度の範囲で回折ピークを示し、前記回折ピークの半値幅が5度以上20度以下であることを特徴とする固体高分子型燃料電池用触媒。
- 炭素担体に金属元素として白金元素のみ含む触媒活性成分を担持した触媒であって、X線光電子分光法(XPS)で測定された白金4fの結合エネルギーのピーク位置が、金属白金の白金4fの結合エネルギーのピーク位置よりも0.5〜1.5eV高エネルギー側であることを特徴とする請求項1〜3のいずれか1項に記載の固体高分子型燃料電池用触媒。
- 請求項1〜4のいずれか1項に記載の触媒を、さらに、還元処理してなることを特徴とする固体高分子型燃料電池用触媒。
- 請求項1〜5のいずれか1項に記載の触媒を、プロトン伝導体と混合してシートに成形してなることを特徴とする固体高分子型燃料電池用電極。
- 請求項6に記載の固体高分子型燃料電池用電極を正極、若しくは、負極の少なくとも一方に用いた固体高分子型燃料電池。
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JP2006342276A JP5164373B2 (ja) | 2006-12-20 | 2006-12-20 | 固体高分子型燃料電池用触媒 |
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JP2008153146A JP2008153146A (ja) | 2008-07-03 |
JP5164373B2 true JP5164373B2 (ja) | 2013-03-21 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010048407A1 (en) | 2008-10-24 | 2010-04-29 | Nanosys, Inc. | Electrochemical catalysts for fuel cells |
KR20230147760A (ko) * | 2018-08-22 | 2023-10-23 | 다나카 기킨조쿠 고교 가부시키가이샤 | 고체 고분자형 연료 전지용 촉매 및 고체 고분자형 연료 전지용 촉매의 선정 방법 |
JP7158350B2 (ja) * | 2019-08-02 | 2022-10-21 | 日清紡ホールディングス株式会社 | 金属担持触媒、電池電極及び電池 |
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US7255954B2 (en) * | 1998-08-27 | 2007-08-14 | Cabot Corporation | Energy devices |
JP2001046870A (ja) * | 1999-08-06 | 2001-02-20 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及び排気ガス浄化システム |
JP2004217626A (ja) * | 2002-12-24 | 2004-08-05 | Honjo Chemical Corp | フラレノール及び/又はフラレノール硫酸水素エステルの有機白金族元素化合物とその利用とその製造方法 |
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