JPS585972A - Electrode for fuel cell - Google Patents
Electrode for fuel cellInfo
- Publication number
- JPS585972A JPS585972A JP56101350A JP10135081A JPS585972A JP S585972 A JPS585972 A JP S585972A JP 56101350 A JP56101350 A JP 56101350A JP 10135081 A JP10135081 A JP 10135081A JP S585972 A JPS585972 A JP S585972A
- Authority
- JP
- Japan
- Prior art keywords
- active carbon
- electrode
- graphitized
- sintering
- catalyst
- 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.)
- Granted
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
- H01M4/96—Carbon-based electrodes
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inert Electrodes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は担体の上に触媒を担持させた燃料電池用電極に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel cell electrode in which a catalyst is supported on a carrier.
燃料電池用電極の触媒としては白金、バラジウム、銀な
どの貴金属が多くの場合用いられる。しかしこれらの触
媒は嶌価なので、通常担体に担持１せる。従来担体とし
ては活性炭あるいは黒鉛が用いられ九・活性炭は比１１
面積が大きく、導電性も比較的高く電極として良い性能
を示すが、耐食性が十分でなく、ｊｌｌｌＫｌｌｌ用触
媒の担体として用いえ場合には酸化して電極が崩壊する
ことがあり九。一方、黒鉛は耐食性、導電性は十分であ
るが１比表面積が小さくへ電乾性能が劣っ九。Noble metals such as platinum, palladium, and silver are often used as catalysts for fuel cell electrodes. However, since these catalysts have a low weight, they are usually supported on a carrier. Conventionally, activated carbon or graphite has been used as a carrier.
Although it has a large area and relatively high conductivity and exhibits good performance as an electrode, it does not have sufficient corrosion resistance and cannot be used as a support for a catalyst for JlllKlll, as it may oxidize and cause the electrode to collapse.9. On the other hand, graphite has sufficient corrosion resistance and conductivity, but has a small specific surface area and poor electrolyte drying performance.
本発明は上述の欠点を除去して、導電性、比表面積、耐
食性をいずれも満足する触媒担体を用いた性能嵐好な燃
料電池用電極を提供することｔＩｉＩ的とする。The object of the present invention is to eliminate the above-mentioned drawbacks and provide a fuel cell electrode with excellent performance using a catalyst carrier that satisfies all of conductivity, specific surface area, and corrosion resistance.
この目的は一部黒鉛化した活性炭よりなる担体に触媒を
担持させることによって達成される。This objective is achieved by supporting the catalyst on a carrier consisting of partially graphitized activated carbon.
活性炭は、木粉、やし殻、ピッチなどを６００〜７００
℃で焼成することによって得られる。この活性炭を８０
００℃前後で焼成すると黒鉛が得られる。しかし２００
０℃前後で焼成すゐと、一部が黒鉛化し九黒鉛化活性貴
が得られることは周知である。Activated carbon includes wood flour, coconut shell, pitch, etc. 600~700
Obtained by firing at ℃. 80% of this activated carbon
Graphite can be obtained by firing at around 00°C. But 200
It is well known that when fired at around 0°C, a part of the material becomes graphitized and a highly graphitized material is obtained.
以下実施例と図とを引用して本発Ｗｓを説明する。The present Ws will be described below with reference to embodiments and figures.
実施例として、活性炭を１ｓｏｏ℃で焼成して得た黒鉛
化活性炭１０）に硝酸＃ ｇｏｔを添加し、水素で還元
して銀添加黒鉛化活性炭触媒を得た・これにポリ四弗化
エチレンを６Ｆ混合し、シート状にｉＩ！ＩＩ後８６０
℃で熱処理して電極を作成し友。閣の自線１はこの電極
の分ｔｉ特性を示したもので参る。電位は酸化水銀／水
銀電極を基準電極として一定した。As an example, nitric acid #got was added to graphitized activated carbon 10) obtained by firing activated carbon at 1 soo Celsius and reduced with hydrogen to obtain a silver-added graphitized activated carbon catalyst. Polytetrafluoroethylene was added to this. Mix 6F and form into a sheet. 860 after II
The electrodes are made by heat treatment at ℃. Cabinet's own line 1 shows the minute ti characteristics of this electrode. The potential was constant using a mercury oxide/mercury electrode as a reference electrode.
図の１１は実施例の黒鉛化活性炭の代襲に通常の活性炭
１０）を用いて作威し丸活性嶽電砺の分−特性であ）、
１１は代）Ｋ黒鉛１０Ｆを用いて作威し良悪鉛電極の特
性である。次に上記の各電極ＯｉＩ側を６ｓ℃の８０１
！ＫＯ）Ｉ水溶液中に浸漬し、ガス側面に酸素を流しな
がら５ｏｏ時間無放電状篩で放置し丸後の重量減少を＃
Ｅ１１ｍ！に示す。11 in the figure shows the characteristics of the activated Dake Dento produced by using ordinary activated carbon 10) as a substitute for the graphitized activated carbon of the example).
11 shows the characteristics of good and bad lead electrodes made using K graphite 10F. Next, the OiI side of each of the above electrodes was heated to 801°C at 6s°C.
! KO) I was immersed in an aqueous solution and allowed to stand on a non-discharge sieve for 5 hours while flowing oxygen to the gas side to reduce the weight of the pellets.
E11m! Shown below.
第 １ｆＲ １九各担体の比表面積を測定した結果を第２表に示す。1st fR 19 Table 2 shows the results of measuring the specific surface area of each carrier.
のデータから次のことが分った。The following was found from the data.
（１）本発明による黒鉛化活性縦電極は比表面積の減少
にもかかわらず、分［１４１１性が活性炭電極よ）むし
ろ優れている。これ杜比表面積の若干の減少による性能
低下より、黒鉛化によ）導電率が向上し１その結果電極
の電気的抵抗が減少しえととによる性能向上が上回っ九
ためと思われる。(1) Despite the decrease in specific surface area, the graphitized activated vertical electrode according to the present invention has better properties than activated carbon electrodes. This is thought to be because the performance improvement due to graphitization improves the electrical conductivity (1), resulting in a decrease in the electrical resistance of the electrode, which outweighs the performance improvement due to a slight decrease in the specific surface area.
（２）黒鉛化活性炭は耐食性が黒鉛よ）着干劣るものの
、活性炭より圧倒的に優る。(2) Although graphitized activated carbon has less corrosion resistance than graphite, it is overwhelmingly superior to activated carbon.
以上述べたように、本発明により燃料電池用電極は担体
として一部黒鉛化した黒鉛化活性炭を用いたものであり
、特別な原料を要することなく分極性能が優れ、酸素電
極として用いた場合も十分な耐食性を有する電極として
燃料電池に極めて有効に使用で龜る。As described above, the fuel cell electrode according to the present invention uses graphitized activated carbon that is partially graphitized as a carrier, and has excellent polarization performance without requiring special raw materials, and can also be used as an oxygen electrode. It can be used extremely effectively in fuel cells as an electrode with sufficient corrosion resistance.
図は本発明の一実施例による電ＩｉＯ分ｔｉｅ性を１の
電極０分［１％性と比較して示す線図である。
ｌ・・・黒鉛化活性縦電極。The figure is a diagram showing the IiO content of one embodiment of the present invention in comparison with the 0% [1%] property of the electrode 1. l...graphitized active vertical electrode.
Claims (1)
れたことを特徴とする燃料電池用電極。1) A fuel cell electrode characterized in that a catalyst is supported on a carrier made of partially graphitized activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56101350A JPS6053425B2 (en) | 1981-07-01 | 1981-07-01 | Electrodes for fuel cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56101350A JPS6053425B2 (en) | 1981-07-01 | 1981-07-01 | Electrodes for fuel cells |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS585972A true JPS585972A (en) | 1983-01-13 |
| JPS6053425B2 JPS6053425B2 (en) | 1985-11-26 |
Family
ID=14298381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56101350A Expired JPS6053425B2 (en) | 1981-07-01 | 1981-07-01 | Electrodes for fuel cells |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6053425B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758154A (en) * | 1985-07-15 | 1988-07-19 | Le Four Industriel Belge | Fluidized-bed plant |
| US4927718A (en) * | 1988-06-21 | 1990-05-22 | The United States Of America As Represented By The United States Department Of Energy | Novel air electrode for metal-air battery with new carbon material and method of making same |
| CN112030660A (en) * | 2020-09-19 | 2020-12-04 | 王荃 | Construction method of anti-freezing pavement |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62110812U (en) * | 1985-12-27 | 1987-07-15 |
-
1981
- 1981-07-01 JP JP56101350A patent/JPS6053425B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758154A (en) * | 1985-07-15 | 1988-07-19 | Le Four Industriel Belge | Fluidized-bed plant |
| US4927718A (en) * | 1988-06-21 | 1990-05-22 | The United States Of America As Represented By The United States Department Of Energy | Novel air electrode for metal-air battery with new carbon material and method of making same |
| CN112030660A (en) * | 2020-09-19 | 2020-12-04 | 王荃 | Construction method of anti-freezing pavement |
| CN112030660B (en) * | 2020-09-19 | 2021-04-02 | 王荃 | Construction method of anti-freezing pavement |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6053425B2 (en) | 1985-11-26 |
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