JPS63310574A - Internal reforming type fuel cell - Google Patents
Internal reforming type fuel cellInfo
- Publication number
- JPS63310574A JPS63310574A JP62145923A JP14592387A JPS63310574A JP S63310574 A JPS63310574 A JP S63310574A JP 62145923 A JP62145923 A JP 62145923A JP 14592387 A JP14592387 A JP 14592387A JP S63310574 A JPS63310574 A JP S63310574A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- reforming
- catalysts
- steam
- passage
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 91
- 238000002407 reforming Methods 0.000 title claims abstract description 56
- 239000003054 catalyst Substances 0.000 claims abstract description 41
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 14
- 230000008021 deposition Effects 0.000 claims abstract description 10
- 239000007800 oxidant agent Substances 0.000 claims description 17
- 239000003792 electrolyte Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 10
- 238000006057 reforming reaction Methods 0.000 abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000001257 hydrogen Substances 0.000 abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 230000036647 reaction Effects 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000003487 electrochemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 229910002090 carbon oxide Inorganic materials 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
- H01M8/0625—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material in a modular combined reactor/fuel cell structure
-
- 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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、燃料電池の燃料通路に燃料改質触媒を充填
し、電池の発生熱によって原燃料を改質する内部改質型
燃料電池に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an internal reforming fuel cell in which a fuel passage of the fuel cell is filled with a fuel reforming catalyst and raw fuel is reformed using the heat generated by the cell. It is something.
第２図は例えば特開昭６０−３２２５５号公報に示され
た従来の内部改質型燃料電池を一部破断して示す斜視図
であり、図において、（ｌ）は多孔性のセラミックスで
構成され、その空間には炭酸塩が充填されている電解質
マトリックス、（２）は多孔性のニッケルなどで構成さ
れた燃料電極、（３）は酸化ニッケルなどの多孔性材料
で構成されｆｔａ化剤化種電極シ、燃料電極（２）と酸
化剤電極（３）とは電解質マトリックスｆｉｌを介して
対向するように配置され、これらで単電池を構成してい
る。（４）は酸化剤電極（３）に対して設けられた酸化
剤通路、（６）は燃料電極（２）に接して設けられ、多
数の孔を有する燃料側スペーサ、（６）は燃料スペーサ
（６）に直角に設けられたリプであり、燃料側スペーサ
（６）とリプ［８）とで燃料通路（７）を形成している
。（８）は燃料通路（７）に充填された燃料改質触媒で
ある。叫は酸化剤通路（４）と燃料通路（７）を分離す
るためのセパレータ板である。セパレータ板四は上面お
よび下面においてそれぞれ相対する２返に沿って凸起部
分を有し、上記凸起部分は電解質マトリックスｆ１）と
接触し、接触部分くおいてウェットシールを形成する。FIG. 2 is a partially cutaway perspective view of a conventional internal reforming fuel cell disclosed in, for example, Japanese Patent Application Laid-Open No. 60-32255. In the figure, (l) is composed of porous ceramics. (2) is a fuel electrode made of porous nickel, etc., and (3) is made of porous material such as nickel oxide, which is used as an fta-forming agent. A seed electrode, a fuel electrode (2), and an oxidizer electrode (3) are arranged to face each other with an electrolyte matrix film in between, and constitute a single cell. (4) is an oxidizer passage provided for the oxidizer electrode (3), (6) is a fuel-side spacer provided in contact with the fuel electrode (2) and has a large number of holes, and (6) is a fuel spacer. (6) is provided perpendicularly to the lip [8], and the fuel side spacer (6) and the lip [8] form a fuel passage (7). (8) is a fuel reforming catalyst filled in the fuel passage (7). A separator plate is used to separate the oxidizer passage (4) and the fuel passage (7). The separator plate 4 has convex portions along two opposing sides on the top and bottom surfaces, and the convex portions contact the electrolyte matrix f1) and form a wet seal at the contact portions.
このようなウェットシール部分（ｌ１ｍ）、（ｌｌｂ）
は反応ガスの気密性呆持を機能とし、燃料側ウェットシ
ール部分（１１亀）は燃料通路（７）を、酸化剤側ウェ
ットシール部分（ｌｌｂ）は酸化剤通路（４）を形成す
る。Wet seal parts like this (l1m), (llb)
Its function is to maintain airtightness of the reactant gas, and the fuel side wet seal portion (11) forms a fuel passage (7), and the oxidizer side wet seal portion (llb) forms an oxidizer passage (4).
なお、第１図は従来の内部改質型燃料電池の一部を示し
ておシ、図中、破線は同様の積層・状態が続いているこ
とを示す。Note that FIG. 1 shows a part of a conventional internal reforming fuel cell, and the broken lines in the figure indicate that the same stacking and state continues.
次に動作について説明する。燃料通路（７）に炭化水素
などの燃料と水蒸気が供給されると、燃料改質触媒（８
）との接触反応により、炭化水素は水蒸気と反応して水
素、−酸化炭素、および炭酸ガスに変換される。炭化水
素がメタンの場合には、この反応は以下の式で表わされ
る。Next, the operation will be explained. When fuel such as hydrocarbons and steam are supplied to the fuel passage (7), the fuel reforming catalyst (8)
), hydrocarbons react with water vapor and are converted into hydrogen, -carbon oxide, and carbon dioxide gas. When the hydrocarbon is methane, this reaction is represented by the following equation.
Ｃ’Ｈ４＋ Ｈ２Ｏ４Ｃｏ ＋ ３Ｈ２生成された水素
および一酸化炭素は、燃料側スペーサ（器）に設けられ
た孔を通夛、多孔性の燃料電極（２）の細孔を拡散する
。他方、酸化剤通路（４）には空気と炭酸ガスとの混合
ガスが供給され、多孔性の酸化剤ＴＩＥ 極［３）の細
孔を拡散する。電解質マトリックスＨに含浸され、動作
温度である６００’Ｃ付近では溶融状態になっている炭
酸塩、１埋極ｔ２１ 、＋３１および上記水素と酸素を
主成分とする反応ガスの間に生ずる電気化学反応によシ
反応ガスが消費され、電流コレクタ（図示せず）間に電
位が生じ、外部に電力が取り出される。なお、燃料改質
触媒（８）上で起こる改質反応は吸熱反応であシ、この
反応を持読させるのに必要な熱量は、上記゛或気化学度
応に伴う非過逆反応が熱ロスとなシ、燃料電層（２）お
よびスペーサ（５）を介して燃料改質触１１＄ ＋８１
に供給される。C'H4+ H2O4Co + 3H2 The generated hydrogen and carbon monoxide pass through the holes provided in the fuel side spacer and diffuse through the pores of the porous fuel electrode (2). On the other hand, a mixed gas of air and carbon dioxide is supplied to the oxidizer passage (4) and diffuses through the pores of the porous oxidizer TIE electrode [3]. The electrochemical reaction that occurs between the carbonate impregnated in the electrolyte matrix H and in a molten state near the operating temperature of 600'C, the 1-embedded electrode t21, +31, and the above-mentioned reaction gas mainly composed of hydrogen and oxygen. The reactant gas is consumed, a potential is created across a current collector (not shown), and power is extracted to the outside. The reforming reaction that occurs on the fuel reforming catalyst (8) is an endothermic reaction, and the amount of heat required to sustain this reaction is the Loss and fuel reforming contact via fuel cell layer (2) and spacer (5) 11$ +81
supplied to
さらに上記電気化学反応に伴って発生する水蒸気は、燃
料通路（７）において改質反応に必要な水蒸気としても
利用される。従って、内部改質型燃料電池の場合外部改
質型燃料電池に比較して原燃料に対する最初に供給する
水蒸気の量は少なくてすむ。このことは、燃料カス中の
水素、−酸化炭素の割合を増加させ、電池の発電特性を
向上させることになる。−試算例によるスチームカーボ
ン比と電池電圧（ｍＶ ）およびシステム発電効率（＠
この関係を第３図に示す。Furthermore, the water vapor generated along with the electrochemical reaction is also used as water vapor necessary for the reforming reaction in the fuel passageway (7). Therefore, in the case of an internal reforming fuel cell, the amount of water vapor initially supplied to the raw fuel can be smaller than that in an external reforming fuel cell. This increases the proportion of hydrogen and carbon oxide in the fuel scum and improves the power generation characteristics of the battery. - Steam carbon ratio, battery voltage (mV) and system power generation efficiency (@
This relationship is shown in FIG.
このように供給水蒸気量の低減は発電効率の改善に大き
な効果がある。しかしながら、従来の内部改質型燃料電
池においても燃料通路（７）の燃料ガス入口部分に設置
された燃料改質触媒（８）に関しては、電気化学反応に
よ多発生した水蒸気がまだ十分には蓄積されていないた
め、スチームカーボン比に関して従来の外部改質反応器
とほぼ同じ状況での運転となシ、水蒸気供給量を低減で
きるという内部改質型燃料電池の特長を子分生かせなか
った。In this way, reducing the amount of supplied steam has a great effect on improving power generation efficiency. However, even in the conventional internal reforming fuel cell, the water vapor generated by the electrochemical reaction is still not sufficient for the fuel reforming catalyst (8) installed at the fuel gas inlet of the fuel passage (7). Because there was no accumulation, the steam-carbon ratio had to be operated under almost the same conditions as a conventional external reforming reactor, and the internal reforming fuel cell's advantage of reducing the amount of steam supplied could not be utilized.
特に燃料通路（７）の上流側すなわち燃料ガス入口部分
で酸化剤側ウェットシール部分（ｌｌｂ）に対応する領
域に設置せられた燃料改質触媒（８）に関しては、この
領域では第２図に示すように対応する酸化剤電極（３）
が欠けている念め電気化学反応が殆ど起こらず水蒸気の
生成も少なく、スチームカーボン比を低減する際のボト
ルネックとなっている。In particular, regarding the fuel reforming catalyst (8) installed in the upstream side of the fuel passage (7), that is, in the area corresponding to the oxidizer side wet seal part (llb) at the fuel gas inlet part, in this area, as shown in FIG. Corresponding oxidizer electrode (3) as shown
Because of the lack of electrochemical reactions, almost no electrochemical reactions occur and little water vapor is produced, which is a bottleneck in reducing the steam-carbon ratio.
従来の内部改質型燃料電池は、燃料通路に同一の炭素析
出性を有した改ズ触謀を充填している念め、最初供給す
る水蒸気址を余シ少なくすると、電気化学反応によシ生
成した水蒸気の蓄積が十分でない上流側すなわち燃料通
路入口付近、とくに酸化剤側のウェットシール部分に相
当する領域において水蒸気が不足し、炭素が析出する可
能性がある。In conventional internal reforming fuel cells, the fuel passage is filled with a reforming catalyst with the same carbon deposition properties, so if the amount of water vapor initially supplied is reduced, the electrochemical reaction will occur. There is a possibility that there is a shortage of water vapor on the upstream side, that is, near the entrance of the fuel passage, where the generated water vapor is not accumulated sufficiently, and particularly in a region corresponding to the wet seal portion on the oxidizing agent side, causing carbon to precipitate.
この発明は上記のような問題点を解消する念めになされ
たもので、上流側においても改質反応で炭素析出がしに
＜＜、供給水蒸気量を少なくできるような内部改質型燃
料電池を得ることを目的とする。This invention was made with the aim of solving the above-mentioned problems, and it is an internal reforming fuel cell that can reduce the amount of water vapor supplied by preventing carbon precipitation through the reforming reaction on the upstream side. The purpose is to obtain.
この発明に係る内部改質型燃料電池は、燃料改質触媒が
燃料の流れ方向に複数種配置され、上流側には下流側よ
シも炭素析出性の低い燃料改質触媒が配置されているも
のである。In the internal reforming fuel cell according to the present invention, a plurality of types of fuel reforming catalysts are arranged in the direction of fuel flow, and fuel reforming catalysts with lower carbon deposition properties are arranged on the upstream side as well as on the downstream side. It is something.
この発明における触媒の配置方法は、上流側に配置され
た炭素を析出しにくい触媒によシ、入口付近での改質反
応における炭素析出を抑制し、下流側では電池反応によ
って発生した水蒸気も利用することによシ、比較的高価
な炭素析出性の低い改質触媒の利用を最小限に抑え、且
つ電池全体として低水蒸気供給量で動作させることが可
能となる。The method of arranging the catalyst in this invention suppresses carbon precipitation in the reforming reaction near the inlet by placing the catalyst on the upstream side that is difficult to deposit carbon, and on the downstream side, the water vapor generated by the cell reaction is also utilized. By doing so, it is possible to minimize the use of a relatively expensive reforming catalyst with low carbon deposition properties, and to operate the battery as a whole with a low amount of water vapor supplied.
以下、この発明の一実施例を図を用いて説明する。第１
図において、（８ｍ）は燃料通路（７）の上流側に配置
された燃料改質触媒、（８ｂ）は燃料通路（７）の下流
側に配置された燃料改質触媒であシ、上流側燃料改質触
媒（８ｍ）は下流側燃料改質触媒（８ｂ）よシも炭素析
出性の低いものが用いられている。このような炭素析出
のしにくい改質触媒としては、白金、ルテニウムなどの
貴金属をセラミック担体に担持させた改質触媒が一般に
広く利用できる。また近年、ニッケルを触媒活物質とし
た改質触媒においても、他に第３成分を含有した。ｂ、
ｔｅ一部ニッケルの活性を調整するなどして、低スチー
ムカーボン比動作用の改質触媒が開発されておシ、これ
を利用できる。下流側燃料改質触１１Ｘ（８ｂ）として
は従来と同様に一般的な改質触媒が利用できる。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (8m) is a fuel reforming catalyst placed on the upstream side of the fuel passage (7), and (8b) is a fuel reforming catalyst placed on the downstream side of the fuel passage (7). The fuel reforming catalyst (8m) has a lower carbon deposition property than the downstream fuel reforming catalyst (8b). As such a reforming catalyst that is difficult to deposit carbon, a reforming catalyst in which a noble metal such as platinum or ruthenium is supported on a ceramic carrier is generally widely used. Furthermore, in recent years, reforming catalysts using nickel as a catalytic active material also contain a third component. b,
A reforming catalyst for low steam carbon ratio operation has been developed by partially adjusting the activity of nickel, and can be utilized. As the downstream fuel reforming catalyst 11X (8b), a general reforming catalyst can be used as in the past.
（Ｘ匂は燃料の流れ方向を示す矢印である。(X is an arrow indicating the direction of fuel flow.
なお、第１図においても第２図の従来例の場合と同様に
、破線は同様の積層状態が続いていることを示す。Incidentally, in FIG. 1 as well, the broken lines indicate that the same stacked state continues, as in the case of the conventional example shown in FIG.
つぎに動作について説明する。燃料通路（７）に投入さ
れた天然ガス等の原燃料は同時に投入された水蒸気と反
応して、水素、−酸化炭素、炭酸ガスを生成する。この
時燃料通路（７）の上流側に設置された炭素析出のしに
くい改質ｍ謀（８ａ）により水蒸気が少ない場合でも改
質反応での炭素析出を抑制し、燃料通路（７）の下流側
は電池反応で生じた水蒸気も利用することによシ十分な
水蒸気量のもとに一般的な改質触媒（８ｂ）によ）改質
反応を行なう。Next, the operation will be explained. The raw fuel such as natural gas input into the fuel passage (7) reacts with the water vapor input at the same time to generate hydrogen, carbon oxide, and carbon dioxide gas. At this time, the reforming mechanism (8a) installed on the upstream side of the fuel passage (7) that makes it difficult to deposit carbon suppresses carbon deposition in the reforming reaction even when there is little water vapor, and On the other hand, by also utilizing the water vapor generated in the cell reaction, the reforming reaction is carried out using a general reforming catalyst (8b) under a sufficient amount of water vapor.
以上の動作によシ、電池全体としては、水蒸気量が少な
い状態で動作可能となり、電池特性を向上させることが
できる。As a result of the above operation, the battery as a whole can operate with a small amount of water vapor, and the battery characteristics can be improved.
すなわち、高価な低スチームカーポジ比用の改質触媒（
８ａ）の使用量を最少限に抑え、しかも内部改質型燃料
電池を少ない水蒸気量の投入で動作させることかでき、
電池特性の向上が図れる。In other words, an expensive reforming catalyst for low steam carposit ratio (
8a) can be minimized, and the internal reforming fuel cell can be operated with a small amount of water vapor input.
Battery characteristics can be improved.
以上のように、この発明によれば、燃料改質触媒が燃料
の流れ方向に複数種類配置され、水蒸気量の不足しやす
い上流側には下流側よりも炭素析出性の低い燃料改質触
媒が配置されているので、少ない水蒸気投入量で動作可
能な内部改質型燃料電池が得られる効果がある。As described above, according to the present invention, a plurality of types of fuel reforming catalysts are arranged in the direction of fuel flow, and a fuel reforming catalyst with a lower carbon deposition property is placed on the upstream side where the amount of water vapor tends to be insufficient than on the downstream side. This arrangement has the effect of providing an internal reforming fuel cell that can operate with a small amount of water vapor input.
第１図はこの発明の一実施例による内部改質型燃料電池
を一部破断して示す斜視図、第２図は従来の内部改質型
燃料電池を一部破断して示す斜視図、第３図は一試算例
によるスチームカーボン比に対する電池電圧およびシス
テム発電効率の関係を示す特性図である。
図において、（１）は電解質マトリックス、（２）は燃
料電極、（３）は酸化剤Ｗ極、（４）は酸化剤通路、（
７）は燃料通路、（８）は燃料改質触媒、（８ｍ） ＃
ｒｉ上流側燃料改質触媒、（８ｂ）は下流側燃料改質触
媒、（ｌｏｌはセパレータ板、（ｌ１ｍ）、（ｌｌｂ）
はウェットシール部分、（ｌ＠は燃料の流れ方向を示す
矢印である。
なお、各図中同一符号は同一または相当部分を示すもの
とする。FIG. 1 is a partially cutaway perspective view of an internal reforming fuel cell according to an embodiment of the present invention; FIG. 2 is a partially cutaway perspective view of a conventional internal reforming fuel cell; FIG. 3 is a characteristic diagram showing the relationship between the steam carbon ratio, the battery voltage, and the system power generation efficiency according to an example of trial calculation. In the figure, (1) is an electrolyte matrix, (2) is a fuel electrode, (3) is an oxidant W electrode, (4) is an oxidant passage, (
7) is the fuel passage, (8) is the fuel reforming catalyst, (8m) #
ri upstream fuel reforming catalyst, (8b) downstream fuel reforming catalyst, (lol separator plate, (l1m), (llb)
is a wet seal portion, and (l@ is an arrow indicating the direction of fuel flow. In each figure, the same reference numerals indicate the same or equivalent portions.
Claims (1)
て対向するように配置した単電池、上記燃料電極に対し
て設けられた燃料通路、この燃料通路に充填された燃料
改質触媒、および上記酸化剤電極に対して設けられた酸
化剤通路を備え、燃料および酸化剤をそれぞれ上記通路
に供給して燃料を改質しながら発電を行なう内部改質型
燃料電池において、上記燃料改質触媒は上記燃料の流れ
方向に複数種類配置され、上流側には下流側よりも炭素
析出性の低い燃料改質触媒が配置されていることを特徴
とする内部改質型燃料電池。A unit cell in which a fuel electrode and an oxidizer electrode are arranged to face each other with an electrolyte matrix interposed therebetween, a fuel passage provided for the fuel electrode, a fuel reforming catalyst filled in the fuel passage, and the oxidizer. In an internal reforming fuel cell that includes an oxidizer passage provided to the electrode and generates power while reforming the fuel by supplying fuel and oxidizer to the passage respectively, the fuel reforming catalyst An internal reforming fuel cell characterized in that a plurality of types of fuel reforming catalysts are arranged in the flow direction of the fuel, and a fuel reforming catalyst having a lower carbon deposition property is arranged on the upstream side than on the downstream side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62145923A JPS63310574A (en) | 1987-06-11 | 1987-06-11 | Internal reforming type fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62145923A JPS63310574A (en) | 1987-06-11 | 1987-06-11 | Internal reforming type fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63310574A true JPS63310574A (en) | 1988-12-19 |
Family
ID=15396206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62145923A Pending JPS63310574A (en) | 1987-06-11 | 1987-06-11 | Internal reforming type fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63310574A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246791A (en) * | 1988-07-06 | 1993-09-21 | Johnson Matthey Public Limited Company | Fuel cell containing a reforming catalyst |
| US5436091A (en) * | 1989-05-11 | 1995-07-25 | Valence Technology, Inc. | Solid state electrochemical cell having microroughened current collector |
| US5470670A (en) * | 1993-03-01 | 1995-11-28 | Matsushita Electric Industrial Co., Ltd. | Fuel cell |
| EP0760531A1 (en) * | 1994-09-29 | 1997-03-05 | Haldor Topsoe A/S | Process for the production of electrical energy in an internal reforming high temperature fuel cell |
| EP1617501A2 (en) * | 2004-07-13 | 2006-01-18 | Ford Motor Company | Controlling kinetic rates for internal reforming of fuel in solid oxide fuel cells |
| US7291417B2 (en) | 2003-01-16 | 2007-11-06 | Hewlett-Packard Development Company, L.P. | Compositional and structural gradients for fuel cell electrode materials |
| WO2019189843A1 (en) * | 2018-03-30 | 2019-10-03 | 大阪瓦斯株式会社 | Metal-supported fuel cell, and fuel cell module |
| WO2019189845A1 (en) * | 2018-03-30 | 2019-10-03 | 大阪瓦斯株式会社 | Fuel battery single cell unit, fuel battery module, and fuel battery device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6158174A (en) * | 1984-08-20 | 1986-03-25 | Mitsubishi Electric Corp | Fuel cell |
-
1987
- 1987-06-11 JP JP62145923A patent/JPS63310574A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6158174A (en) * | 1984-08-20 | 1986-03-25 | Mitsubishi Electric Corp | Fuel cell |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246791A (en) * | 1988-07-06 | 1993-09-21 | Johnson Matthey Public Limited Company | Fuel cell containing a reforming catalyst |
| US5436091A (en) * | 1989-05-11 | 1995-07-25 | Valence Technology, Inc. | Solid state electrochemical cell having microroughened current collector |
| US5470670A (en) * | 1993-03-01 | 1995-11-28 | Matsushita Electric Industrial Co., Ltd. | Fuel cell |
| EP0760531A1 (en) * | 1994-09-29 | 1997-03-05 | Haldor Topsoe A/S | Process for the production of electrical energy in an internal reforming high temperature fuel cell |
| US7291417B2 (en) | 2003-01-16 | 2007-11-06 | Hewlett-Packard Development Company, L.P. | Compositional and structural gradients for fuel cell electrode materials |
| EP1617501A2 (en) * | 2004-07-13 | 2006-01-18 | Ford Motor Company | Controlling kinetic rates for internal reforming of fuel in solid oxide fuel cells |
| EP1617501A3 (en) * | 2004-07-13 | 2008-06-11 | Ford Motor Company | Controlling kinetic rates for internal reforming of fuel in solid oxide fuel cells |
| US7638226B2 (en) | 2004-07-13 | 2009-12-29 | Ford Motor Company | Apparatus and method for controlling kinetic rates for internal reforming of fuel in solid oxide fuel cells |
| WO2019189843A1 (en) * | 2018-03-30 | 2019-10-03 | 大阪瓦斯株式会社 | Metal-supported fuel cell, and fuel cell module |
| WO2019189845A1 (en) * | 2018-03-30 | 2019-10-03 | 大阪瓦斯株式会社 | Fuel battery single cell unit, fuel battery module, and fuel battery device |
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