JPS60151969A - Electrode catalyst for fuel cell - Google Patents

Electrode catalyst for fuel cell

Info

Publication number
JPS60151969A
JPS60151969A JP59007108A JP710884A JPS60151969A JP S60151969 A JPS60151969 A JP S60151969A JP 59007108 A JP59007108 A JP 59007108A JP 710884 A JP710884 A JP 710884A JP S60151969 A JPS60151969 A JP S60151969A
Authority
JP
Japan
Prior art keywords
catalyst
solution
carbide
platinum
fuel cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59007108A
Other languages
Japanese (ja)
Inventor
Takeshi Kawamura
剛 川村
Hiroshi Okamoto
岡本　博司
Tetsuichi Kudo
徹一 工藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP59007108A priority Critical patent/JPS60151969A/en
Publication of JPS60151969A publication Critical patent/JPS60151969A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • 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

Abstract

PURPOSE:To obtain a highly active electrode catalyst for a methanol fuel cell which contains only a minute quantity of platinum by causing a carbide catalyst containing tungsten and molybdenum to carry a platinum-ruthenium catalyst. CONSTITUTION:A 5% KOH aqueous solution containing chloroplatinic acid and ruthenium chloride is prepared; 10ml of the solution contains 0.5-5mg of Pt and 0.25-2.5mg of Ru. After 10g of a carbide containing tungsten and molybdenum in an atomic ratio of 4:1 is added to 10ml of the above solution, 5ml of 10% aqueous formaldehyde solution is gradually dropped into the solution while stirring it to reduce Pt and Ru into metals which are then deposited on the carbide, thereby obtaining an electrode catalyst for a methanol fuel cell. As a result, due to the synergistic effect of the Pt-Ru catalyst and the carbide catalyst, a highly active catalyst can be obtained by using only a minute quantity of platinum.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は燃料電池触媒に係り、特にメタノール燃料電池
のメタノール電極触媒に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a fuel cell catalyst, and more particularly to a methanol electrode catalyst for a methanol fuel cell.

〔発明の背景〕[Background of the invention]

メタノール燃料電池の電極触媒として白金およびルテニ
ウムからなる二元系触媒が優れた特性を示すことが知ら
れている。この触媒は通常炭素粉末の表面に担持された
状態で使用される。しかし、白金は権少な元素で歯側な
ため、できるだけ少量の白金使用量で高い効果を持たせ
ることが望ましい。It is known that a binary catalyst consisting of platinum and ruthenium exhibits excellent properties as an electrode catalyst for methanol fuel cells. This catalyst is usually used in a state supported on the surface of carbon powder. However, since platinum is a rare element and is used on teeth, it is desirable to achieve a high effect using as little platinum as possible.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、従来技術に比べ少量の白金使用輩で、
従来と同等もしくはそれ以上の活性を有するメタノール
電極触媒を提供することに多る。The purpose of the present invention is to use a small amount of platinum compared to the prior art,
The purpose of this invention is to provide a methanol electrocatalyst having an activity equal to or greater than conventional ones.

〔発明の概要〕[Summary of the invention]

タングステンおよびモリブデンよシなる炭化物がそれ自
体でメタノール電極触媒としての活性を有する仁とは、
特願昭５６−１８５４０８号に述べられているが、発明
者らは上記炭化物触媒に白金−ルテニウム触媒を担持す
ることによりそれぞれの触媒が有する活性の和よりさら
に高い活性を有する触媒が得られることを見いだした。Carbides such as tungsten and molybdenum themselves have activity as methanol electrocatalysts.
As stated in Japanese Patent Application No. 56-185408, the inventors discovered that by supporting a platinum-ruthenium catalyst on the above-mentioned carbide catalyst, a catalyst having an activity higher than the sum of the activities of each catalyst can be obtained. I found it.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明を実施例により説明する。 The present invention will be explained below with reference to Examples.

塩化白金酸および塩化ルテニウムを含む５％ＫＯＨ水溶
液を２棟用意した。１つは溶液１ｍｌ中にｓｍｇのｐｔ
と２．５　ｍｇの几ｕ’に含み（溶液Ａ）、他は溶７＆
　１　ｍｌ中に０．５ｍｇ（ＤＰ’ｔと０．２５ｍｇ０
ルＵを含む（溶液Ｂ）ものである。Two 5% KOH aqueous solutions containing chloroplatinic acid and ruthenium chloride were prepared. One is smg of pt in 1ml of solution
and 2.5 mg of u' (solution A), and the others are solution 7 &
0.5mg (DP't and 0.25mg0) in 1 ml
(solution B).

タングステンとモリブデンと全原子比で４：１の割合で
含む炭化物１０ｇをそれぞれ上記溶液１９ｍｌ中に加え
攪拌しなから１０チホルムアルデヒド水溶液を５ｍｌ徐
々に滴下した。これによシ、溶液中のｐｔおよびＢｕｉ
ｉ金属状態に還元され炭化物表面に担持された。溶液Ａ
およびｐｔ用いてｐｔとＵＬ、ｕを担持した炭化物をそ
れぞれ触媒（Ａ）触媒（Ｂ）と呼ぶ。ｐｔおよびｌｕの
担持率は炭化物１ｇ６たシ触媒Ａで５ｍｇ　Ｐｔ＋ｚｓ
ｍｇ　Ｂｕ触媒Ｂで０．５ｍｇ　Ｐ　ｔ＋０，２５ｍｇ
　ｆＬｕであった。10 g of carbide containing tungsten and molybdenum in a total atomic ratio of 4:1 were each added to 19 ml of the above solution, and while stirring, 5 ml of a 10-thiformaldehyde aqueous solution was gradually added dropwise. Accordingly, pt and Bui in solution
It was reduced to an i-metallic state and supported on the carbide surface. Solution A
The carbides supporting pt, UL, and u using PT are referred to as catalyst (A) and catalyst (B), respectively. The loading rate of pt and lu is 5 mg Pt + zs for catalyst A with 1 g of carbide.
mg Bu catalyst B 0.5mg P t+0.25mg
It was fLu.

上記２棟の触媒２ｇを１０ｃｍ”の大きさのタンタル鋼
に浄血して電極としＩＭ硫酸＋４Ｍメタノール溶液中で
０．５’ｌ対水素電極）の電位でメタノール電解酸化に
対する触媒活性を調べた結果を参考例とともに消１表に
示す。2 g of the catalysts from the above two buildings were purified on a 10 cm" size tantalum steel and used as an electrode to examine the catalytic activity for methanol electrolytic oxidation at a potential of 0.5'L vs. hydrogen electrode in IM sulfuric acid + 4M methanol solution. The results are shown in Table 1 along with reference examples.

参考例は本発明の効果を明らかにするための従来技術に
よる触媒の活性を示したもので、触媒（Ｑおよび（Ｄ）
は炭素粉末にｐｔおよびＦＬｕを本実施例と同等の方法
で担持したもの、触媒（Ｅ）は本実施例に用いた炭化物
のみのものである。The reference examples show the activity of catalysts according to the prior art to clarify the effects of the present invention.
PT and FLu were supported on carbon powder in the same manner as in this example, and catalyst (E) was only the carbide used in this example.

第１表で示したように本発明によれば、ｐｔ−几Ｕ触媒
と炭化物触媒との相乗効果が認められそれぞれ単独で用
いる場合と比べはるかに高い活性が得られる。As shown in Table 1, according to the present invention, a synergistic effect is observed between the PT-U catalyst and the carbide catalyst, and much higher activity can be obtained than when each is used alone.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、微量の白金量で高活性な触媒を得るこ
とができ、その工業的価値は極めて高い。According to the present invention, a highly active catalyst can be obtained with a trace amount of platinum, and its industrial value is extremely high.

Claims (1)

【特許請求の範囲】[Claims] １、白金、ルテニウム、タングステン、モリブデンおよ
び炭素よシなる燃料゛電池用電極触媒。1. Electrode catalyst for fuel cells made of platinum, ruthenium, tungsten, molybdenum and carbon.
JP59007108A 1984-01-20 1984-01-20 Electrode catalyst for fuel cell Pending JPS60151969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59007108A JPS60151969A (en) 1984-01-20 1984-01-20 Electrode catalyst for fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59007108A JPS60151969A (en) 1984-01-20 1984-01-20 Electrode catalyst for fuel cell

Publications (1)

Publication Number Publication Date
JPS60151969A true JPS60151969A (en) 1985-08-10

Family

ID=11656889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59007108A Pending JPS60151969A (en) 1984-01-20 1984-01-20 Electrode catalyst for fuel cell

Country Status (1)

Country Link
JP (1) JPS60151969A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0876685A1 (en) * 1995-12-08 1998-11-11 California Institute Of Technology Direct methanol feed fuel cell and system
EP1260269A1 (en) * 2001-05-23 2002-11-27 OMG AG & Co. KG A process for preparing an anode catalyst for fuel cells and the anode catalyst prepared therewith
EP1266687A1 (en) * 2001-05-23 2002-12-18 OMG AG & Co. KG Process for the preparation of a catalyst for PME fuel cell anode and catalyst thereby prepared
US6703150B2 (en) 1993-10-12 2004-03-09 California Institute Of Technology Direct methanol feed fuel cell and system
KR100495127B1 (en) * 2002-07-11 2005-06-14 한국과학기술원 Catalysts for electrode of fuel cell
WO2006057080A1 (en) * 2004-11-25 2006-06-01 Ricoh Company, Ltd. Electrode catalyst, method for preparation thereof, direct alcohol fuel cell
KR100717797B1 (en) 2005-11-30 2007-05-11 삼성에스디아이 주식회사 Cathode catalyst for fuel cell, membrane-electrode assembly for fuel cell and fuel cell system comprising same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6703150B2 (en) 1993-10-12 2004-03-09 California Institute Of Technology Direct methanol feed fuel cell and system
EP0876685A1 (en) * 1995-12-08 1998-11-11 California Institute Of Technology Direct methanol feed fuel cell and system
EP0876685A4 (en) * 1995-12-08 2003-09-03 California Inst Of Techn Direct methanol feed fuel cell and system
EP1260269A1 (en) * 2001-05-23 2002-11-27 OMG AG & Co. KG A process for preparing an anode catalyst for fuel cells and the anode catalyst prepared therewith
EP1266687A1 (en) * 2001-05-23 2002-12-18 OMG AG & Co. KG Process for the preparation of a catalyst for PME fuel cell anode and catalyst thereby prepared
US6797667B2 (en) 2001-05-23 2004-09-28 Umicore Ag & Co. Kg Process for preparing an anode catalyst for fuel cells and the anode catalyst prepared therewith
KR100495127B1 (en) * 2002-07-11 2005-06-14 한국과학기술원 Catalysts for electrode of fuel cell
WO2006057080A1 (en) * 2004-11-25 2006-06-01 Ricoh Company, Ltd. Electrode catalyst, method for preparation thereof, direct alcohol fuel cell
JP2006179445A (en) * 2004-11-25 2006-07-06 Ricoh Co Ltd Electrode catalyst, method for manufacturing the same, and direct alcohol fuel cell
KR100717797B1 (en) 2005-11-30 2007-05-11 삼성에스디아이 주식회사 Cathode catalyst for fuel cell, membrane-electrode assembly for fuel cell and fuel cell system comprising same

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