JPH0298053A - Manufacture of platinum ruthenium catalyst for fuel cell - Google Patents
Manufacture of platinum ruthenium catalyst for fuel cellInfo
- Publication number
- JPH0298053A JPH0298053A JP63250194A JP25019488A JPH0298053A JP H0298053 A JPH0298053 A JP H0298053A JP 63250194 A JP63250194 A JP 63250194A JP 25019488 A JP25019488 A JP 25019488A JP H0298053 A JPH0298053 A JP H0298053A
- Authority
- JP
- Japan
- Prior art keywords
- platinum
- ruthenium
- dispersion
- catalyst
- binary
- 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
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 30
- CFQCIHVMOFOCGH-UHFFFAOYSA-N platinum ruthenium Chemical compound [Ru].[Pt] CFQCIHVMOFOCGH-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000000446 fuel Substances 0.000 title claims description 21
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 7
- 238000001246 colloidal dispersion Methods 0.000 claims abstract description 6
- YBCAZPLXEGKKFM-UHFFFAOYSA-K ruthenium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Ru+3] YBCAZPLXEGKKFM-UHFFFAOYSA-K 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 5
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 230000002744 anti-aggregatory effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 11
- 230000010287 polarization Effects 0.000 abstract description 11
- 239000000843 powder Substances 0.000 abstract description 6
- 238000000151 deposition Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 abstract 2
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 30
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 8
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000019253 formic acid Nutrition 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910000929 Ru alloy Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- REHUGJYJIZPQAV-UHFFFAOYSA-N formaldehyde;methanol Chemical compound OC.O=C REHUGJYJIZPQAV-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- FHMDYDAXYDRBGZ-UHFFFAOYSA-N platinum tin Chemical compound [Sn].[Pt] FHMDYDAXYDRBGZ-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
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
- H01M4/92—Metals of platinum group
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
- Inert Electrodes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、メタノール、ホルムアルデヒド、ギ酸など全
燃料とする燃料電池用燃料極触媒の製造法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing a fuel electrode catalyst for a fuel cell using all fuels such as methanol, formaldehyde, and formic acid.
従来の技術
従来、この棟の燃料電池用電極触媒としては白金が広く
用いられている。酸素−水素燃料電池用の白金触媒の製
造法として、白金コロイドを生成させることによって２
６Å以下の粒子径をもつ高分散された白金触媒が得られ
ることが提案されている（特公昭６１−１８６９号公報
、特開昭６４−９２５８８号公報）。この触媒は酸素を
酸化剤とする酸素電極及び水素を燃料とする水素電極触
媒に対して高い性能を示す。しかし、メタノールホルム
アルデヒド、ギ酸など全燃料とする燃料電池用電極触媒
としては分極が大きく、十分な特性は得られていなかっ
た。そこで、第二の元素で白金を修飾し、高性能化を図
る試みが多くなされている。それらのうち、比較的高い
性能が得られているものに、白金ルテニウム合金、白金
スズ共電着体などがある。白金ルテニウム合金は最も良
い性能を示しているが、調製に高温加熱を必要とするた
めに、触媒粒子の比表面積が低下し、均一に単体上に分
散させることが困難であるという欠点がある。従って、
第二元素による賦活効果はみられるが、分散が悪いため
に電極触媒として十分な特性は得られていない。Conventional Technology Conventionally, platinum has been widely used as an electrode catalyst for fuel cells in this building. As a method for producing platinum catalysts for oxygen-hydrogen fuel cells, 2
It has been proposed that a highly dispersed platinum catalyst having a particle size of 6 Å or less can be obtained (Japanese Patent Publication No. 1869/1982, Japanese Patent Application Laid-open No. 92588/1983). This catalyst shows high performance compared to an oxygen electrode using oxygen as an oxidizing agent and a hydrogen electrode catalyst using hydrogen as a fuel. However, as an electrode catalyst for fuel cells that use methanol formaldehyde or formic acid as all fuel, polarization is large and sufficient characteristics have not been obtained. Therefore, many attempts have been made to improve performance by modifying platinum with a second element. Among them, platinum-ruthenium alloys, platinum-tin co-electrodeposited materials, etc. have achieved relatively high performance. Although the platinum-ruthenium alloy has shown the best performance, it has the disadvantage that it requires high-temperature heating for preparation, which reduces the specific surface area of the catalyst particles and makes it difficult to uniformly disperse the catalyst particles. Therefore,
Although an activation effect by the second element is observed, sufficient properties as an electrode catalyst are not obtained due to poor dispersion.
発明が解決しようとする課題
このような従来の構成では、多元系触媒でありかつ平均
粒径３０Å以下に高分散された触媒が得られないという
課題があった。Problems to be Solved by the Invention With such a conventional configuration, there was a problem in that it was not possible to obtain a multi-component catalyst and a highly dispersed catalyst with an average particle size of 30 Å or less.
本発明はこのような課題を解決するもので、３０Å以下
の平均粒系を有する高度に分散された白金ルテニウム分
散液と、その分散液をカーボン基体上に沈積させること
によって、高い分極特性を示す白金ルテニウム触媒を製
造する方法を提供することを目的とするものである。The present invention solves these problems by using a highly dispersed platinum ruthenium dispersion having an average grain size of 30 Å or less and depositing the dispersion on a carbon substrate, which exhibits high polarization characteristics. The object of the present invention is to provide a method for producing a platinum ruthenium catalyst.
課題を解決するための手段
この課題を解決するために本発明は、水溶媒体中に塩化
白金酸と亜二チオン酸ナトリウム（Ｈａ２Ｓ、、ｏ４）
とを、例えば過酸化水素などの凝集防止剤の存在下で混
合した白金分散液に、塩化ルテニウムを加えて白金とル
テニウムの二元コロイド分散液を形成させ、この白金ル
テニワム二元コロイド分散液中に懸濁状態の導電性カー
ボンを加えて導電性カーボン基体上に白金ルテニウム二
元触媒粒子を形成させることによって、燃料電池用白金
ルテニウム触媒金得るものである。Means for Solving the Problem In order to solve this problem, the present invention provides chloroplatinic acid and sodium dithionite (Ha2S,,o4) in an aqueous medium.
Ruthenium chloride is added to a platinum dispersion prepared by mixing the above in the presence of an anti-aggregation agent such as hydrogen peroxide to form a binary colloidal dispersion of platinum and ruthenium, and in this platinum-ruthenium binary colloidal dispersion Platinum-ruthenium catalyst gold for fuel cells is obtained by adding suspended conductive carbon to the conductive carbon substrate to form platinum-ruthenium binary catalyst particles on the conductive carbon substrate.
作用
この製造法により、還元剤となる亜二チオン酸ナトリウ
ムを用いて高度に分散した白金粒子上にルテニウムが沈
着し、５〜３０人の高い分散を保ったままの白金−ルテ
ニウム二元分散液が得られる。この高分散し几白金ルテ
ニウム微粒子を導電性カーボン基体上に沈着させること
ができるので、触媒粒子径６〜３０人からなる高活性な
白金ルテニウム触媒が得られることとなる。Effect: Through this production method, ruthenium is deposited on highly dispersed platinum particles using sodium dithionite as a reducing agent, creating a binary platinum-ruthenium dispersion that maintains a high degree of dispersion. is obtained. Since these highly dispersed platinum ruthenium fine particles can be deposited on a conductive carbon substrate, a highly active platinum ruthenium catalyst having a catalyst particle size of 6 to 30 particles can be obtained.
実施例 以下に実施例によりさらに詳しく説明する。Example This will be explained in more detail with reference to Examples below.
２ｇの塩化白金酸を室温においてイオン交換水３００
ｒｕｇに溶解させた。この塩化白金酸水溶液を６０℃に
加熱し、工〈攪はんしながら過酸化水素水（３１％）１
０ｍ／ｉ添加する。このとき溶液が赤みを帯びる。亜二
チオン酸ナトリウム溶液（６０ｇ／（１） １ｏｏｘ１
２滴下すると溶液は赤褐色に変わり、ｐＨが低下する。Add 2 g of chloroplatinic acid to 300 g of ion-exchanged water at room temperature.
It was dissolved in rug. This chloroplatinic acid aqueous solution was heated to 60°C, and while stirring, 1 part hydrogen peroxide solution (31%) was added.
Add 0m/i. At this time, the solution becomes reddish. Sodium dithionite solution (60g/(1) 1oox1
After adding 2 drops, the solution turns reddish-brown and the pH decreases.
これをイオン変換水で７００罰に希釈し、塩化ルテニウ
ム水ｆｆＥＷｃ１ｏ、４ｑＲｕ／ｍ／ ） ｓ Ｏｒｔ
ｔｌを滴下する。この間、溶液は褐色そして黒色にゆっ
くり変化し、白金及びルテニウムを含有するコロイド分
散液が形成される。このようにして形成され之白金−ル
テニウム分散液のコロイド粒子を透過電子顕微鏡で観察
したところ、粒子直径が６〜２６人の範囲で一様に分布
していることがわかっ几。This was diluted to 700% with ion-converted water, and ruthenium chloride waterffEWc1o, 4qRu/m/)s Ort
Drop the tl. During this time, the solution slowly turns brown and then black, forming a colloidal dispersion containing platinum and ruthenium. When the colloidal particles of the platinum-ruthenium dispersion thus formed were observed using a transmission electron microscope, it was found that the particle diameters were uniformly distributed in the range of 6 to 26 particles.
上記の白金ルテニウムコロイド分散液にスラリー状の炭
素微粉末（ＶｕｌｃａｎＸＣ７２ＲＤａｂｏｔ社製）ε
ｇｔ”添刀口、激しく攪はんした。その結果、白金ルテ
ニウムのコロイド粒子が炭素微粉末担体上に沈着し、こ
れを濾過、乾燥、微粉化することＫよって、微粉末状の
炭素担体上に担持された白金ルテニウム触媒が形成され
た。Slurry-like carbon fine powder (manufactured by VulcanXC72RDabot)
As a result, colloidal particles of platinum-ruthenium were deposited on the carbon fine powder carrier, and by filtering, drying, and pulverizing them, they were deposited on the fine powder carbon carrier. A supported platinum ruthenium catalyst was formed.
透過電子顕微鏡写真により、白金ルテニウム粒子の直径
は５〜３０人の範囲に一様に分布していることがわかっ
た。また、白金ルテニウムの９５チが炭素担体上に担持
されていた。Transmission electron micrographs showed that the diameters of the platinum-ruthenium particles were uniformly distributed in the range of 5 to 30 people. Further, 95% of platinum ruthenium was supported on the carbon carrier.
上記のようにして作成され几白金ルテニウム触媒のメタ
ノール燃料極の分極特性を測定するために、上記触媒担
持炭素微粉末とフッ素樹脂（ＰＴＦＥ）により撥水化処
理した導電性炭素微粉末とを白金量２Ｈｉ／ａｎＩとな
るように混合し、導電性カーボンペーパーに加圧成型し
て試料電極基板を作成した。In order to measure the polarization characteristics of the methanol fuel electrode prepared as described above and having a platinum ruthenium catalyst, the catalyst-supported fine carbon powder and the conductive carbon fine powder treated to be water repellent with fluororesin (PTFE) were mixed with platinum. The mixture was mixed in an amount of 2Hi/anI and pressure molded onto conductive carbon paper to prepare a sample electrode substrate.
メタノール燃料電極の分極特性の測定は、６０℃の硫酸
水溶液（１，５Ｍ ）とメタノール（２Ｍ）（７）混合
溶液中で行った。その結果を第１図に示す。The polarization characteristics of the methanol fuel electrode were measured in a mixed solution of sulfuric acid aqueous solution (1.5M) and methanol (2M) (7) at 60°C. The results are shown in FIG.
第１図の横軸は電流密度を示し、縦軸は標準水素電極（
ＲＨＥ）に対する試験極の電位を示す。本発明の触媒を
用いたメタノール燃料極の分極特性を曲線人に示す。比
較のために従来法による白金のみの触媒を白金量（２η
／ｃｄ）で塗布したメタノール燃料極の分極特性を曲線
Ｂに示す。The horizontal axis in Figure 1 shows the current density, and the vertical axis shows the standard hydrogen electrode (
The potential of the test electrode relative to RHE) is shown. The polarization characteristics of a methanol fuel electrode using the catalyst of the present invention are shown in a curved line. For comparison, a conventional platinum-only catalyst was used with a platinum amount (2η
Curve B shows the polarization characteristics of the methanol fuel electrode coated with /cd).
第１図に示すように、本発明による白金−ルテニウム触
媒は、従来法による触媒と比較して、幅広い電流密度に
おいて０．２”／以上分極を小さくすることができた。As shown in FIG. 1, the platinum-ruthenium catalyst according to the present invention was able to reduce polarization by more than 0.2'' over a wide range of current densities compared to the conventional catalyst.
すなわち、分極が０．２ｖ以上小さいということは、こ
の電極？用いて燃料電池を構成した場合に、電池電圧が
０．２ｖ以上同上できるということである。In other words, the polarization is smaller by 0.2v or more, which means that this electrode? This means that when a fuel cell is constructed using the same, the battery voltage can be increased to 0.2 V or more.
なお、本発明をその特定の実施例について詳細に説明し
たが、本発明はこの実施例に限定されるものではなく、
種々の修正が可能であることは明かである。また、実施
例では燃料にメタノールを用いたが、そのほかにホルム
アルデヒド、ギ酸を用いても同様の傾向の性能が得られ
た。さらに、実施例では電解質に硫酸を用いていたが、
このほかにもリン酸、トリフルオルメタンスルホン酸な
どを用いた場合も有効であった。Although the present invention has been described in detail with respect to a specific example thereof, the present invention is not limited to this example.
Obviously, various modifications are possible. Furthermore, although methanol was used as the fuel in the examples, performance with a similar tendency was obtained when formaldehyde and formic acid were also used. Furthermore, although sulfuric acid was used as the electrolyte in the example,
In addition to this, the use of phosphoric acid, trifluoromethanesulfonic acid, etc. was also effective.
発明の効果
以上のように本発明によれば、塩化白金酸と亜二チオン
酸ナトリウムからなる白金分散液に塩化ルテニウムを添
加する工程を設けることによって、触媒粒子径５〜３０
人の高い分散を保持した状態で白金−ルテニウム二元分
散液が得られ、さらにこれを導電性カーボン基体上に形
成させることにより、メタノール、ホルムアルデヒド、
ギ酸などを燃料とする燃料電池用電極触媒として優れた
分極特性を実現する製造法を提供できるという効果が得
られる。Effects of the Invention As described above, according to the present invention, by providing a step of adding ruthenium chloride to a platinum dispersion consisting of chloroplatinic acid and sodium dithionite, the catalyst particle size can be reduced to 5 to 30.
A platinum-ruthenium binary dispersion is obtained while maintaining high dispersion, and by forming this on a conductive carbon substrate, methanol, formaldehyde,
The present invention has the effect of providing a manufacturing method that achieves excellent polarization characteristics as an electrode catalyst for fuel cells using formic acid or the like as a fuel.
第１図は本発明によるメタノール燃料極と従来のメタノ
ール燃料極の分極特性を比較した図である。FIG. 1 is a diagram comparing the polarization characteristics of a methanol fuel electrode according to the present invention and a conventional methanol fuel electrode.
Claims (1)
Ｎａ＿２Ｓ＿２Ｏ＿４）とを過酸化水素などの凝集防止
剤の存在下で混合した白金分散液に、塩化ルテニウムを
加えて白金とルテニウムの二元コロイド分散液を形成さ
せ、前記白金ルテニウム二元コロイド分散液中に懸濁状
態の導電性カーボンを加え、導電性カーボン基体上に白
金ルテニウム二元触媒粒子を形成させることを特徴とす
る燃料電池用白金ルテニウム触媒の製造法。Chloroplatinic acid and sodium dithionite (
Ruthenium chloride is added to a platinum dispersion prepared by mixing Na_2S_2O_4) in the presence of an anti-aggregation agent such as hydrogen peroxide to form a binary colloidal dispersion of platinum and ruthenium. 1. A method for producing a platinum-ruthenium catalyst for fuel cells, which comprises adding conductive carbon in a suspended state to a conductive carbon substrate to form platinum-ruthenium binary catalyst particles on a conductive carbon substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63250194A JPH0298053A (en) | 1988-10-04 | 1988-10-04 | Manufacture of platinum ruthenium catalyst for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63250194A JPH0298053A (en) | 1988-10-04 | 1988-10-04 | Manufacture of platinum ruthenium catalyst for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0298053A true JPH0298053A (en) | 1990-04-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63250194A Pending JPH0298053A (en) | 1988-10-04 | 1988-10-04 | Manufacture of platinum ruthenium catalyst for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0298053A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118860A (en) * | 1990-09-10 | 1992-04-20 | Fuji Electric Co Ltd | Manufacture of fuel cell alloy catalyst |
| US5521439A (en) * | 1993-04-05 | 1996-05-28 | Sgs-Microelectronics S.R.L. | Combination and method for coupling a heat sink to a semiconductor device |
| JPH11250918A (en) * | 1997-12-19 | 1999-09-17 | Degussa Ag | Platinum/ruthenium alloy catalyst, its manufacture, gas diffusion electrode, membrane electrode unit, and proton conductive polymer membrane for pem fuel cell |
| JP2005522015A (en) * | 2002-04-04 | 2005-07-21 | ザ ボード オブ トラスティーズ オブ ザ ユニバーシティ オブ イリノイ | Fuel cell and fuel cell catalyst |
| US7445859B2 (en) | 1993-10-12 | 2008-11-04 | California Institute Of Technology | Organic fuel cell methods and apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5492588A (en) * | 1977-12-12 | 1979-07-21 | United Technologies Corp | Manufacture of platinum dispersed solution and platinum catalyst |
| JPS6397232A (en) * | 1986-10-15 | 1988-04-27 | Tanaka Kikinzoku Kogyo Kk | Production of high-dispersion binary pt-ru cluster catalyst |
-
1988
- 1988-10-04 JP JP63250194A patent/JPH0298053A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5492588A (en) * | 1977-12-12 | 1979-07-21 | United Technologies Corp | Manufacture of platinum dispersed solution and platinum catalyst |
| JPS6397232A (en) * | 1986-10-15 | 1988-04-27 | Tanaka Kikinzoku Kogyo Kk | Production of high-dispersion binary pt-ru cluster catalyst |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118860A (en) * | 1990-09-10 | 1992-04-20 | Fuji Electric Co Ltd | Manufacture of fuel cell alloy catalyst |
| US5521439A (en) * | 1993-04-05 | 1996-05-28 | Sgs-Microelectronics S.R.L. | Combination and method for coupling a heat sink to a semiconductor device |
| US7445859B2 (en) | 1993-10-12 | 2008-11-04 | California Institute Of Technology | Organic fuel cell methods and apparatus |
| JPH11250918A (en) * | 1997-12-19 | 1999-09-17 | Degussa Ag | Platinum/ruthenium alloy catalyst, its manufacture, gas diffusion electrode, membrane electrode unit, and proton conductive polymer membrane for pem fuel cell |
| JP4582594B2 (en) * | 1997-12-19 | 2010-11-17 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | Platinum / ruthenium alloy catalyst, process for producing the same, gas diffusion electrode, membrane electrode unit and proton conducting polymer membrane for PEM fuel cell |
| JP2005522015A (en) * | 2002-04-04 | 2005-07-21 | ザ ボード オブ トラスティーズ オブ ザ ユニバーシティ オブ イリノイ | Fuel cell and fuel cell catalyst |
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