JP3291670B2 - Fuel electrode side current collector for high temperature solid oxide fuel cells - Google Patents
Fuel electrode side current collector for high temperature solid oxide fuel cellsInfo
- Publication number
- JP3291670B2 JP3291670B2 JP15214394A JP15214394A JP3291670B2 JP 3291670 B2 JP3291670 B2 JP 3291670B2 JP 15214394 A JP15214394 A JP 15214394A JP 15214394 A JP15214394 A JP 15214394A JP 3291670 B2 JP3291670 B2 JP 3291670B2
- Authority
- JP
- Japan
- Prior art keywords
- ysz
- current collector
- side current
- fuel electrode
- electrode side
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Fuel Cell (AREA)
- Compounds Of Iron (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は高温固体電解質型燃料電
池（ＳＯＦＣ）用燃料極側集電板に係り、特に、電解質
との熱膨張係数の差が小さく、しかも電子導電性が高
く、また、メタン、メタノール、エタノール等の炭化水
素系燃料の水蒸気改質反応に対する触媒活性が低く、か
つ安価なＳＯＦＣ用燃料極側集電板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel electrode side current collector for a high-temperature solid oxide fuel cell (SOFC), and more particularly to a fuel cell having a small difference in thermal expansion coefficient from the electrolyte and a high electronic conductivity. The present invention relates to an inexpensive SOFC fuel electrode side current collector plate having low catalytic activity for a steam reforming reaction of hydrocarbon fuels such as methane, methanol, and ethanol.
【０００２】[0002]
【従来の技術】ＳＯＦＣは、イットリア安定化ジルコニ
ア（ＹＳＺ）よりなる電解質膜の内面に燃料極（アノー
ド）及び空気極（カソード）の電極膜を積層した構成と
されている。従来、燃料極側電極材料としては、多孔性
ニッケル（Ｎｉ）又はＮｉ−ＹＳＺサーメットが提案さ
れており（「燃料電池設計技術」ｐ２１９）、ＳＯＦＣ
用燃料極側集電板には、上記燃料極材料として使用され
ているＮｉ４０〜５０体積％含有Ｎｉ−ＹＳＺサーメッ
ト（還元時）が使用されている。2. Description of the Related Art An SOFC has a structure in which electrode films of a fuel electrode (anode) and an air electrode (cathode) are laminated on an inner surface of an electrolyte membrane made of yttria-stabilized zirconia (YSZ). Conventionally, porous nickel (Ni) or Ni-YSZ cermet has been proposed as a fuel electrode side electrode material ("Fuel Cell Design Technology" p. 219).
The fuel electrode side current collector plate uses Ni-YSZ cermet (at the time of reduction) containing 40 to 50% by volume of Ni used as the fuel electrode material.
【０００３】ＳＯＦＣ用燃料極側集電板には、高い電子
導電性と、下層の電解質膜を構成するＹＳＺの熱膨張係
数に近い熱膨張係数を有することが要求される。A fuel electrode side current collector for an SOFC is required to have high electron conductivity and a thermal expansion coefficient close to that of YSZ constituting a lower electrolyte membrane.
【０００４】従来、還元雰囲気で高い電子導電性を示す
必要のある燃料極側集電板等に使用される材料として
は、燃料極構成材料に類似した材料であるＮｉ−ＹＳＺ
系サーメット（「燃料電池設計技術」ｐ２２４）、及
び、耐熱合金が使用されているが、一般に、耐熱合金の
線膨張係数は大きく、ＳＯＦＣ構成材料と線膨張係数を
適合させることは困難である。[0004] Conventionally, as a material used for a fuel electrode side current collector plate or the like which needs to exhibit high electron conductivity in a reducing atmosphere, Ni-YSZ which is a material similar to a fuel electrode constituent material is used.
Although a system cermet ("Fuel Cell Design Technology" p. 224) and a heat-resistant alloy are used, the coefficient of linear expansion of the heat-resistant alloy is generally large, and it is difficult to match the linear expansion coefficient with the SOFC constituent material.
【０００５】また、ＳＯＦＣ用燃料極側集電板としてＮ
ｉ−ＹＳＺ系サーメットを使用する場合、必要な導電率
を確保するための必要Ｎｉ含有量（還元時）は、３０〜
４０体積％以上となるが、Ｎｉ含有量が多くなるほど、
当該サーメットの線膨張係数は、ＹＳＺのそれから離れ
ていく。従って、Ｎｉ含有量は、必要な導電率を確保で
きる最小量が好ましい。[0005] Further, as a fuel electrode side current collector for SOFC, N
When an i-YSZ-based cermet is used, the required Ni content (at the time of reduction) to secure the required conductivity is 30 to
40% by volume or more, but as the Ni content increases,
The linear expansion coefficient of the cermet departs from that of YSZ. Therefore, the Ni content is preferably the minimum amount that can ensure the required conductivity.
【０００６】上記のことを踏まえ、従来、ＳＯＦＣ用燃
料極側集電板としては、Ｎｉ４０体積％含有−ＹＳＺサ
ーメットがＳＯＦＣ用燃料極及び燃料極側集電板材料と
して多く使用されている。In view of the above, a YSZ cermet containing 40% by volume of Ni has been conventionally widely used as a fuel electrode for an SOFC and as a material for a fuel electrode for an SOFC.
【０００７】[0007]
【発明が解決しようとする課題】従来のＳＯＦＣ燃料極
側集電板の構成材料であるＮｉ−ＹＳＺサーメットでは
次のような問題があった。The conventional Ni-YSZ cermet which is a constituent material of the SOFC fuel electrode side current collector has the following problems.
【０００８】 Ｎｉは高価であるため、Ｎｉ−ＹＳＺ
サーメットも高価となる。[0008] Since Ni is expensive, Ni-YSZ
Cermets are also expensive.
【０００９】 ＳＯＦＣの燃料極及び燃料極側集電板
材料としての導電率を確保したＮｉ−ＹＳＺ系サーメッ
トの線膨張係数は大きく、ＹＳＺと大きな線膨張係数差
を生じる。ＹＳＺの線膨張係数（１０００℃）は、１
０．６×１０-6／Ｋであるのに対し、Ｎｉ４０体積％含
有−ＹＳＺサーメット（還元時）の線膨張係数（１００
０℃）は、１２．５×１０-6／Ｋと大きく異なる。The linear expansion coefficient of a Ni—YSZ cermet that secures electrical conductivity as a fuel electrode and fuel electrode side current collector plate material of an SOFC is large, and a large difference in linear expansion coefficient from YSZ occurs. The linear expansion coefficient (1000 ° C.) of YSZ is 1
0.6 × 10 −6 / K, whereas the linear expansion coefficient of the YSZ cermet (at the time of reduction) containing 40% by volume of Ni (100
0 ° C.) is significantly different from 12.5 × 10 −6 / K.
【００１０】 Ｎｉは、メタン、メタノール、エタノ
ール等の炭化水素系燃料の水蒸気改質反応に対する触媒
活性が非常に高いため、燃料導入部（ＳＯＦＣスタック
の炭化水素系燃料導入部）で急激に水蒸気改質反応が進
行し、局所的なスタック温度の低下を招く恐れがある。[0010] Since Ni has a very high catalytic activity for the steam reforming reaction of hydrocarbon fuels such as methane, methanol, and ethanol, Ni is subjected to rapid steam reforming at the fuel inlet (the hydrocarbon fuel inlet of the SOFC stack). Quality reaction proceeds, which may cause a local decrease in stack temperature.
【００１１】本発明は上記従来の問題点を解決し、電解
質との熱膨張係数の差が小さく、しかも電子導電性が高
く、また、メタン、メタノール、エタノール等の炭化水
素系燃料の水蒸気改質反応に対する触媒活性が低く、か
つ安価なＳＯＦＣ用燃料極側集電板を提供することを目
的とする。The present invention solves the above-mentioned conventional problems, has a small difference in thermal expansion coefficient from the electrolyte, has a high electron conductivity, and is capable of steam reforming hydrocarbon fuels such as methane, methanol, and ethanol. An object of the present invention is to provide an inexpensive SOFC fuel electrode side current collector plate having low catalytic activity for the reaction.
【００１２】[0012]
【課題を解決するための手段】本発明のＳＯＦＣ用燃料
極側集電板は、ＦｅとＹ2 Ｏ3 安定化ＺｒＯ2 とからな
り、Ｆｅ含有量がＦｅ2 Ｏ3 換算で３０〜５０重量％で
あるサーメットで構成されることを特徴とする。A fuel electrode side current collector for an SOFC according to the present invention comprises Fe and Y 2 O 3 stabilized ZrO 2, and has a Fe content of 30 to 50% in terms of Fe 2 O 3. % Of cermet.
【００１３】[0013]
【作用】Ｆｅは豊富な元素であり、安価である。従っ
て、Ｆｅを含むＹＳＺサーメットであれば、安価に提供
される。[Function] Fe is an abundant element and is inexpensive. Therefore, a YSZ cermet containing Fe can be provided at low cost.
【００１４】しかも、ＳＯＦＣの作動温度である８００
〜１０００℃の還元雰囲気において、高い電子導電性を
示し、燃料極側集電板として必要な導電率（１００Ｓ／
ｃｍ以上）を確保した、Ｆｅ2 Ｏ3 換算３０〜５０重量
％のＦｅ−ＹＳＺ系サーメット、即ちＦｅ2 Ｏ3 −ＹＳ
Ｚ系サーメットの線膨張係数は、１００〜１４００℃の
温度域で、従来の燃料極側集電板構成材料であるＮｉ４
０体積％含有−ＹＳＺサーメット（還元時）よりもＹＳ
Ｚの線膨張係数に良く一致する。Ｆｅ2 Ｏ3 及びＮｉＯ
の線膨張係数は、下記の通りであり、Ｆｅ2 Ｏ3 −ＹＳ
Ｚ系サーメットであれば、ＹＳＺの線膨張係数に近似し
た線膨張係数を達成することができる。In addition, the operating temperature of the SOFC is 800
In a reducing atmosphere of ~ 1000 ° C, it shows high electron conductivity, and the electric conductivity (100 S /
cm or more) to ensure a, Fe 2 O 3 in terms of 30 to 50 wt% of Fe-YSZ cermet, namely Fe 2 O 3 -YS
The linear expansion coefficient of the Z-based cermet is in a temperature range of 100 to 1400 ° C.
0 volume% content-YS than YSZ cermet (at the time of reduction)
Good agreement with the linear expansion coefficient of Z. Fe 2 O 3 and NiO
Has the following linear expansion coefficient: Fe 2 O 3 -YS
With a Z-based cermet, a linear expansion coefficient close to the linear expansion coefficient of YSZ can be achieved.
【００１５】Ｆｅ2 Ｏ3 （１００〜１２００℃）：１
２．５×１０-6／Ｋ ＮｉＯ（３００〜８００℃）：１４．１×１０-6／Ｋ また、Ｆｅのメタン、メタノール、エタノール等の炭化
水素系燃料の水蒸気改質反応に対する触媒活性は、Ｎｉ
に比べ非常に低い。即ち、一般に、メタン、メタノー
ル、エタノール等の炭化水素系燃料の水蒸気改質反応に
対する各金属の触媒活性の序列は、下記の通りであり、
Ｆｅの触媒活性はＮｉの触媒活性に比べて非常に小さ
い。Fe 2 O 3 (100-1200 ° C.): 1
2.5 × 10 −6 / K NiO (300 to 800 ° C.): 14.1 × 10 −6 / K The catalytic activity of Fe for the steam reforming reaction of hydrocarbon fuels such as methane, methanol and ethanol is as follows. , Ni
Very low compared to. That is, in general, the order of catalytic activity of each metal for the steam reforming reaction of hydrocarbon fuels such as methane, methanol, and ethanol is as follows:
The catalytic activity of Fe is much smaller than that of Ni.
【００１６】Ｒｕ，Ｒｈ＞Ｎｉ，Ｐｄ＞＞Ｆｅ，ＣｏRu, Rh> Ni, Pd >> Fe, Co
【００１７】[0017]
【実施例】以下、図面を参照して本発明の実施例につい
て詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１８】図１は本発明に係るＦｅ−ＹＳＺサーメッ
トの断面構造を示す模式図である。FIG. 1 is a schematic view showing a sectional structure of the Fe-YSZ cermet according to the present invention.
【００１９】図示の如く、本発明においては、Ｆｅ１と
ＹＳＺ２とで構成されるサーメット３を燃料極側集電板
材料とする。As shown in the figure, in the present invention, a cermet 3 composed of Fe1 and YSZ2 is used as a fuel electrode side current collector plate material.
【００２０】本発明に係るＦｅ−ＹＳＺサーメットを構
成するＹＳＺは、３〜１５モル％、特に８モル％のＹ2
Ｏ3 で安定化されたＹＳＺであることが好ましい。The YSZ constituting the Fe-YSZ cermet according to the present invention is 3 to 15 mol%, particularly 8 mol%, of Y 2.
Preferably, it is YSZ stabilized with O 3 .
【００２１】Ｆｅ−ＹＳＺサーメットのＦｅの割合は少
な過ぎると必要な導電率が得られず、逆に多過ぎると線
膨張係数がＹＳＺのそれから離れる。従って、本発明に
おいては、Ｆｅ含有量はＦｅ2 Ｏ3 換算で３０〜５０重
量％とする。If the proportion of Fe in the Fe-YSZ cermet is too small, the required conductivity cannot be obtained, and if it is too large, the linear expansion coefficient deviates from that of YSZ. Therefore, in the present invention, the Fe content is 30 to 50% by weight in terms of Fe 2 O 3 .
【００２２】このＦｅ−ＹＳＺサーメットで構成される
燃料極側集電板は気孔率２５〜３５％程度の多孔質であ
ることが好ましい。この多孔質の程度が大き過ぎると強
度及び、電子導電性の低下を引き起こし、小さ過ぎると
燃料ガスが流れにくく、表面積が減少し、有効触媒活性
点が減少する。The fuel electrode side current collector made of the Fe-YSZ cermet is preferably porous with a porosity of about 25 to 35%. If the degree of the porosity is too large, the strength and electronic conductivity are reduced. If the porosity is too small, the flow of the fuel gas is difficult, the surface area is reduced, and the effective catalytic active site is reduced.
【００２３】なお、本発明の燃料極側集電板において
は、還元状態においてＦｅ−ＹＳＺサーメットが形成さ
れるものであり、頭初は酸化鉄−ＹＳＺ複合材料となっ
ている。この酸化鉄中の酸素量は温度、酸素分圧等によ
り変化し、Ｆｅ2 Ｏ3 に対し、一部がＦｅ，ＦｅＯ，Ｆ
ｅ3 Ｏ4 等となった混合相が形成されていると考えられ
る。In the fuel electrode-side current collector plate of the present invention, an Fe-YSZ cermet is formed in a reduced state, and is initially an iron oxide-YSZ composite material. The oxygen content of the oxide in the iron changes the temperature, the oxygen partial pressure, relative to Fe 2 O 3, partially Fe, FeO, F
It is considered that a mixed phase such as e 3 O 4 was formed.
【００２４】このような酸化鉄−ＹＳＺ複合材料は、Ｆ
ｅ2 Ｏ3 、或いは、Ｆｅ2 Ｏ3 以外にも、Ｆｅ，Ｆｅ
Ｏ，Ｆｅ3 Ｏ4 ，塩化鉄，有機鉄塩，硝酸鉄等をＦｅ原
料として用い、常法に従って容易に製造することができ
る。Such an iron oxide-YSZ composite material has a F
In addition to e 2 O 3 or Fe 2 O 3 , Fe, Fe
O, Fe 3 O 4 , iron chloride, organic iron salts, iron nitrate and the like can be easily produced according to a conventional method using Fe raw materials.
【００２５】以下に具体的な実験例及び実施例を挙げて
本発明をより詳細に説明する。なお、以下において、Ｙ
ＳＺとしては、８モル％Ｙ2 Ｏ3 安定化ＺｒＯ2 を用い
た。Hereinafter, the present invention will be described in more detail with reference to specific experimental examples and examples. In the following, Y
As SZ, 8 mol% Y 2 O 3 stabilized ZrO 2 was used.
【００２６】実験例１ Ｆｅ2 Ｏ3 換算含有量３５重量％のＦｅ−ＹＳＺサーメ
ットを作製し、線膨張係数及び還元雰囲気での導電率を
測定した。Experimental Example 1 An Fe-YSZ cermet having a Fe 2 O 3 equivalent content of 35% by weight was prepared, and its linear expansion coefficient and conductivity in a reducing atmosphere were measured.
【００２７】同様に、ＹＳＺ及びＮｉ４０体積％含有−
ＹＳＺサーメット（還元時）についても線膨張係数を測
定し、また、Ｎｉ４０体積％含有−ＹＳＺサーメットに
ついては導電率も測定した。Similarly, YSZ and Ni contain 40% by volume.
The linear expansion coefficient of the YSZ cermet (at the time of reduction) was also measured, and the electrical conductivity of the YSZ cermet containing 40% by volume of Ni was also measured.
【００２８】図２に１００〜１４００℃の線膨張係数測
定結果を示す。図２中、○印はＹＳＺ、△印はＮｉ４０
体積％含有−ＹＳＺサーメット（還元時）、□印はＦｅ
2 Ｏ3 ３５重量％含有Ｆｅ−ＹＳＺサーメットの線膨張
係数を示す。図２より明らかなように、従来型燃料極側
集電板材料であるＮｉ４０体積％含有−ＹＳＺサーメッ
ト（還元時）に比較し、Ｆｅ2 Ｏ3 ３５重量％含有Ｆｅ
−ＹＳＺサーメットは、全温度域で線膨張係数がＹＳＺ
のそれに良く一致した。FIG. 2 shows the results of measuring the linear expansion coefficient at 100 to 1400 ° C. In FIG. 2, the mark ○ is YSZ and the mark Δ is Ni40.
Volume% content-YSZ cermet (at the time of reduction), □ indicates Fe
The linear expansion coefficient of Fe-YSZ cermet containing 35% by weight of 2 O 3 is shown. As is clear from FIG. 2, as compared with the conventional fuel electrode side current collector plate material containing 40% by volume of Ni—YSZ cermet (at the time of reduction), Fe 2 O 3 containing 35% by weight of Fe was contained.
-YSZ cermet has a linear expansion coefficient of YSZ over the entire temperature range.
Agreed well with that.
【００２９】また、図３に７００〜１０００℃、水素中
での導電率測定結果を示す。図２中、△印はＮｉ４０体
積％含有−ＹＳＺサーメット、□印はＦｅ2 Ｏ3 ３５重
量％含有Ｆｅ−ＹＳＺサーメットの導電率を示す。図３
より明らかなように、Ｎｉ４０体積％含有−ＹＳＺサー
メットに比べて、Ｆｅ2 Ｏ3 ３５重量％含有Ｆｅ−ＹＳ
Ｚサーメットの導電率は約一桁低い。しかし、各温度で
１００Ｓ／ｃｍ以上の導電率を示し、還元雰囲気でＳＯ
ＦＣ用燃料極側集電板としての導電率の要求特性を十分
に満たすことが明らかである。FIG. 3 shows the results of conductivity measurement in hydrogen at 700 to 1000 ° C. In FIG. 2, the symbol Δ indicates the conductivity of Ni-volume-containing YSZ cermet, and the symbol □ indicates the conductivity of Fe-OZ cermet containing 35% by weight of Fe 2 O 3 . FIG.
As is more apparent, Fe-YS containing 35% by weight of Fe 2 O 3 is compared with YSZ cermet containing 40% by volume of Ni.
The conductivity of Z cermet is about an order of magnitude lower. However, it shows a conductivity of 100 S / cm or more at each temperature, and shows SO
It is clear that the required characteristics of conductivity as a fuel electrode side current collector for FC are sufficiently satisfied.
【００３０】実施例１ Ｆｅ2 Ｏ3 ３５重量％含有Ｆｅ−ＹＳＺサーメットを燃
料極側集電板として使用した単セルを１０００℃、０．
１Ａ／ｃｍ2 の負荷で２０００時間発電したが、電解質
のイオン輸率を落とすことなく良好に作動した。これら
のことより、内部改質型ＳＯＦＣ用燃料極側集電板とし
て、Ｆｅ−ＹＳＺ系サーメットを利用できることを確認
した。Example 1 A single cell using a Fe-YSZ cermet containing 35% by weight of Fe 2 O 3 as a fuel-electrode-side current collector was used at 1000 ° C. and at 0.1 ° C.
Although power was generated for 2000 hours at a load of 1 A / cm 2 , the operation was satisfactory without reducing the ion transport number of the electrolyte. From these, it was confirmed that Fe-YSZ-based cermet can be used as the fuel electrode side current collector for the internal reforming SOFC.
【００３１】実験例２ 実験例１において、Ｆｅ−ＹＳＺサーメットのＦｅ2 Ｏ
3 換算含有量を表１に示す通り種々変えて、各々のサー
メットについて線膨張係数（１０００℃）及び導電率
（１０００℃）を調べ、結果を表１に示した。Experimental Example 2 In the experimental example 1, the Fe-YSZ cermet was made of Fe 2 O.
The linear expansion coefficient (1000 ° C.) and the electrical conductivity (1000 ° C.) of each cermet were examined by changing the 3 conversion content as shown in Table 1. The results are shown in Table 1.
【００３２】[0032]
【表１】 [Table 1]
【００３３】表１より、Ｆｅ2 Ｏ3 換算含有量３０〜５
０重量％のＦｅ−ＹＳＺサーメットであれば、線膨張係
数及び導電率共に、良好な結果が得られることが明らか
である。As shown in Table 1, the content in terms of Fe 2 O 3 is 30 to 5
It is clear that 0% by weight of Fe-YSZ cermet can provide good results in both linear expansion coefficient and electrical conductivity.
【００３４】[0034]
【発明の効果】以上詳述した通り、本発明のＳＯＦＣ用
燃料極側集電板によれば、 電解質との熱膨張係数の差が小さく、従って、電解
質との剥離の問題がない 。 ＳＯＦＣ用燃料極側集電板としての優れた電子導電
性を有する。 メタン、メタノール、エタノール等の炭化水素系燃
料の水蒸気改質反応に対 する触媒活性が低い。従っ
て、局所的なスタック温度の低下の恐れがない。 といった優れた特性を有し、しかも安価なＳＯＦＣ用燃
料極側集電板が提供される。As described in detail above, according to the fuel electrode side current collector for SOFC of the present invention, the difference in the coefficient of thermal expansion from the electrolyte is small, and therefore, there is no problem of separation from the electrolyte. It has excellent electronic conductivity as a fuel electrode side current collector for SOFC. Low catalytic activity for steam reforming of hydrocarbon fuels such as methane, methanol and ethanol. Therefore, there is no possibility of a local decrease in stack temperature. Thus, an inexpensive SOFC fuel electrode side current collector having such excellent characteristics is provided.
【図１】本発明に係るＦｅ−ＹＳＺサーメットの断面構
造を示す模式図である。FIG. 1 is a schematic view showing a cross-sectional structure of an Fe-YSZ cermet according to the present invention.
【図２】実験例１で求めた線膨張係数の測定結果を示す
グラフである。FIG. 2 is a graph showing a measurement result of a linear expansion coefficient obtained in Experimental Example 1.
【図３】実験例１で求めた導電率の測定結果を示すグラ
フである。FIG. 3 is a graph showing the measurement results of the conductivity obtained in Experimental Example 1.
１ Ｆｅ ２ ＹＳＺ ３ Ｆｅ−ＹＳＺサーメット 1 Fe 2 YSZ 3 Fe-YSZ cermet
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−269856（ＪＰ，Ａ) 特開 昭62−296366（ＪＰ，Ａ) 特開 平２−19487（ＪＰ，Ａ) 特開 平４−160760（ＪＰ，Ａ) 特開 平６−111839（ＪＰ，Ａ) 特開 平７−45293（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/02 H01M 8/12 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-61-269856 (JP, A) JP-A-62-296366 (JP, A) JP-A-2-19487 (JP, A) JP-A-4- 160760 (JP, A) JP-A-6-111839 (JP, A) JP-A-7-45293 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 8/02 H01M 8 / 12
Claims (1)
り、Ｆｅ含有量がＦｅ2 Ｏ3 換算で３０〜５０重量％で
あるサーメットで構成されることを特徴とする高温固体
電解質型燃料電池用燃料極側集電板。1. A high temperature solid electrolyte type comprising a cermet comprising Fe and Y 2 O 3 stabilized ZrO 2 and having an Fe content of 30 to 50% by weight in terms of Fe 2 O 3. Fuel electrode side current collector for fuel cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15214394A JP3291670B2 (en) | 1994-07-04 | 1994-07-04 | Fuel electrode side current collector for high temperature solid oxide fuel cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15214394A JP3291670B2 (en) | 1994-07-04 | 1994-07-04 | Fuel electrode side current collector for high temperature solid oxide fuel cells |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0817453A JPH0817453A (en) | 1996-01-19 |
| JP3291670B2 true JP3291670B2 (en) | 2002-06-10 |
Family
ID=15533979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15214394A Expired - Fee Related JP3291670B2 (en) | 1994-07-04 | 1994-07-04 | Fuel electrode side current collector for high temperature solid oxide fuel cells |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3291670B2 (en) |
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1994
- 1994-07-04 JP JP15214394A patent/JP3291670B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0817453A (en) | 1996-01-19 |
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