JPH10241715A - Fused carbonate type fuel cell - Google Patents
Fused carbonate type fuel cellInfo
- Publication number
- JPH10241715A JPH10241715A JP9045129A JP4512997A JPH10241715A JP H10241715 A JPH10241715 A JP H10241715A JP 9045129 A JP9045129 A JP 9045129A JP 4512997 A JP4512997 A JP 4512997A JP H10241715 A JPH10241715 A JP H10241715A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- metal
- fuel cell
- cathode electrode
- resistance
- 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
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶融炭酸塩型燃料
電池の高性能化に係り、特に電池内部抵抗を低減する構
造を有する溶融炭酸塩型燃料電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving the performance of a molten carbonate fuel cell, and more particularly to a molten carbonate fuel cell having a structure for reducing the internal resistance of the fuel cell.
【０００２】[0002]
【従来の技術】従来の溶融炭酸塩型燃料電池は、内部抵
抗低減のために電解質を含浸させた板状のマトリックス
の厚みを薄くすること、またこのマトリックスの気孔率
を高めること等が主流であって、電池構成部材間の接触
抵抗、特にカソ−ド電極と集電板間の接触抵抗について
はほとんど対策することがなかった。2. Description of the Related Art Conventional molten carbonate fuel cells mainly include reducing the thickness of a plate-like matrix impregnated with an electrolyte to reduce internal resistance and increasing the porosity of the matrix. There has been almost no countermeasure against the contact resistance between the battery components, especially the contact resistance between the cathode electrode and the current collector.
【０００３】[0003]
【発明が解決しようとする課題】燃料電池の内部抵抗
は、電極、集電板、電解質、セパレ−タなどの固有抵抗
とそれぞれの部材の形状、厚さとによる抵抗と、それぞ
れの部材間の接触抵抗とで構成されている。即ち、図６
に示すような溶融炭酸塩型燃料電池おいて、電解質を含
むマトリックス１の一方の面にアノード電極２、集電板
８及びアノ−ド側セパレータ６が順次に接して配置さ
れ、マトリックス１の他方の面にはカソード電極３、集
電板９及びカソ−ド側セパレ−タ７が順次に接して配置
されている。アノード電極２、集電板８はアノ−ド側セ
パレ−タ６に形成された凹部に、またカソード電極３、
集電板９はカソ−ド側セパレ−タ７の凹部に収納されて
いる。各セパレータ６、７は凹部の底面に互いに並列す
る複数の溝からなるガス通路４を有し、ガス通路４を仕
切るリブ５の先端が集電板８、９に接触している。リブ
５は電流の通路ともなる。The internal resistance of a fuel cell is determined by the specific resistance of electrodes, current collectors, electrolytes, separators, etc., the resistance due to the shape and thickness of each member, and the contact between each member. It consists of a resistor and a resistor. That is, FIG.
In the molten carbonate type fuel cell shown in FIG. 1, an anode electrode 2, a current collector 8 and an anode-side separator 6 are arranged in sequence on one surface of a matrix 1 containing an electrolyte, and the other side of the matrix 1 The cathode electrode 3, the current collecting plate 9 and the cathode-side separator 7 are sequentially arranged on the surface. The anode electrode 2 and the current collecting plate 8 are provided in concave portions formed in the anode-side separator 6, and the cathode electrode 3 and the
The current collector 9 is housed in a recess of the cathode side separator 7. Each of the separators 6 and 7 has a gas passage 4 composed of a plurality of grooves arranged in parallel with each other on the bottom surface of the concave portion. The rib 5 also serves as a current passage.
【０００４】マトリックス１は、LiAlO2の粉末などを焼
結した多孔体で、その細孔内に電解質を含んでいる。ア
ノ−ド電極２及びカソ−ド電極３は共に多孔体で、前者
はNi、後者はNiOが主成分である。集電板８、９は、電極
２、３とそれぞれのセパレ−タ６、７のリブ５との間の
電気的な通路であるとともにガス通路４からの反応ガス
が電極２、３に拡散するのを妨げないように多くは穴９
ａが形成されたパンチングメタルが使われている。そし
て、アノ−ド側の集電板８ではステンレス鋼SUS310S
が、カソ−ド側の集電板９ではSUS316Lが多く使われて
いる。またセパレ−タ６、７は、一般的にはSUS310Sが
使われている。The matrix 1 is a porous body obtained by sintering LiAlO 2 powder or the like, and contains an electrolyte in the pores. Both the anode electrode 2 and the cathode electrode 3 are porous, and the former is mainly composed of Ni and the latter is mainly composed of NiO. The current collector plates 8 and 9 are electric passages between the electrodes 2 and 3 and the ribs 5 of the respective separators 6 and 7, and the reaction gas from the gas passage 4 diffuses to the electrodes 2 and 3. Hole 9 so as not to disturb
A punched metal on which a is formed is used. The current collector 8 on the anode side is made of stainless steel SUS310S.
However, SUS316L is often used for the current collector 9 on the cathode side. Generally, SUS310S is used for the separators 6 and 7.
【０００５】このように構成された従来の燃料電池につ
いて、その内部抵抗を分離して図示すると図７のように
なる。抵抗Ｒ６、Ｒ８、Ｒ２、Ｒ１、Ｒ３、Ｒ９、Ｒ７
は、材料固有の抵抗と寸法、形状とによる抵抗で、Ｒ
６、Ｒ７はそれぞれアノ−ド側セパレ−タ６及びカソ−
ド側セパレ−タ７の抵抗である。Ｒ８、Ｒ９は集電板
８、９の抵抗、Ｒ２、Ｒ３はそれぞれアノ−ド電極２、
カソ−ド電極３の抵抗、そしてＲ１は電解質を含んだマ
トリックス１の抵抗である。FIG. 7 shows a conventional fuel cell constructed as described above in which the internal resistance is separated and shown. Resistances R6, R8, R2, R1, R3, R9, R7
Is the resistance due to the material-specific resistance, dimensions, and shape.
6, R7 are anode-side separator 6 and cathode, respectively.
This is the resistance of the side separator 7. R8 and R9 are the resistances of the current collectors 8 and 9, R2 and R3 are the anode electrodes 2, respectively.
The resistance of the cathode electrode 3, and R1 is the resistance of the matrix 1 containing the electrolyte.
【０００６】抵抗Ｒ(６・８)、Ｒ(２・８)、Ｒ(３・
９)、Ｒ(７・９)は、部材間の接触抵抗で、Ｒ(６・
８)、Ｒ(７・９)はそれぞれアノ−ド側セパレ−タ６と
集電板８、カソ−ド側セパレ−タ７と集電板９の接触抵
抗である。またＲ(２・８)、Ｒ(３・９)は集電板８とア
ノ−ド電極２、集電板９とカソ−ド電極３の接触抵抗で
ある。これらの抵抗を相対比較が出来るよう単位面積あ
たりの抵抗とし、かつ相対値で示すと表１のようにな
り、マトリックス１の抵抗Ｒ１と、集電板９とカソ−ド
電極３間の接触抵抗Ｒ(３・９)が電池内部抵抗の大半を
占めることがわかった。The resistances R (6.8), R (2.8), R (3 • 8)
9) and R (7 · 9) are contact resistance between members, and R (6 · 9)
8) and R (7.9) are contact resistances between the anode side separator 6 and the current collector 8 and the cathode side separator 7 and the current collector 9 respectively. R (2.8) and R (3.9) are the contact resistance between the current collector 8 and the anode electrode 2 and between the current collector 9 and the cathode electrode 3. These resistances are expressed as resistance per unit area so that they can be compared with each other, and expressed as relative values as shown in Table 1. The resistance R1 of the matrix 1, the contact resistance between the current collector 9 and the cathode electrode 3 are shown in Table 1. It was found that R (3.9) accounts for most of the internal resistance of the battery.
【０００７】[0007]
【表１】 [Table 1]
【０００８】これは他の抵抗が固有抵抗の小さい金属の
抵抗、または締付け時に互いに密に接触し易い（なじみ
の良い）金属間の接触抵抗であるのに対して、マトリッ
クス１部分は固有抵抗の高い非金属材料からなり、また
集電板９とカソ−ド電極３間の接触抵抗Ｒ(３・９)は金
属と非金属(ＮｉＯ)間のなじみの悪い接触であるからで
ある。This is because the other resistance is a resistance of a metal having a low specific resistance or a contact resistance between metals which are easily brought into close contact with each other during tightening (a familiar), whereas a part of the matrix 1 has a specific resistance. This is because the contact resistance R (3.9) between the current collector plate 9 and the cathode electrode 3 is an unfamiliar contact between metal and nonmetal (NiO).
【０００９】従来は、この内部抵抗低減の為に余りなす
べき手段は無く、単にマトリックスの厚みを薄くした
り、気孔率を若干高める程度のことでしかなかった。特
に、固有抵抗が高く、また剛性が大きく、かつ表面に微
小な凹凸があり寸法精度の悪い酸化物(ＮｉＯ)からなる
カソード電極と金属(ステンレス鋼)からなる集電板との
間の接触抵抗に対してはなんら対策が無かった。Heretofore, there has been no extra measure to reduce the internal resistance, but merely to reduce the thickness of the matrix or to slightly increase the porosity. In particular, the contact resistance between the cathode electrode made of oxide (NiO), which has high specific resistance, high rigidity, and fine irregularities on the surface and has poor dimensional accuracy, and the current collector plate made of metal (stainless steel) No action was taken against
【００１０】本発明は、これらの点に鑑み為されたもの
で、その目的は集電板とカソ−ド電極間の接触抵抗を小
さくして、溶融炭酸塩型燃料電池の高性能化を図ること
にある。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to reduce the contact resistance between a current collector and a cathode electrode to improve the performance of a molten carbonate fuel cell. It is in.
【００１１】[0011]
【課題を解決するための手段】上記目的は、電解質を含
む電解質板を挾んで、一方にそれぞれ金属からなるアノ
−ド電極と一集電板が順に配置され、他方に金属酸化物
からなるカソ−ド電極と金属からなる別の電極板が順に
配置されてなる溶融炭酸塩型燃料電池において、カソ−
ド電極と別の集電板との間に多孔性かつ軟質の金属充填
層を設けることにより達成される。The object of the present invention is to sandwich an electrolyte plate containing an electrolyte, one of which is provided with an anode electrode made of a metal and the other of a current collector in order, and the other is made of a cathode made of a metal oxide. In a molten carbonate fuel cell in which a cathode electrode and another electrode plate made of metal are arranged in order,
This is achieved by providing a porous and soft metal-filled layer between the negative electrode and another current collector.
【００１２】この金属充填層は、(1)ＮｉまたはＮｉを
主成分とする粉末、(2)カソ−ド電極と別の集電板とを
一体化させる、Ｎｉを主成分としたろう材、(3)別の集
電板表面にクラッドされたＮｉ薄膜、あるいは(4)別の
集電板の表面にメッシュ状に形成されたＮｉ、により構
成される。The metal-filled layer is composed of (1) Ni or a powder containing Ni as a main component, (2) a brazing material containing Ni as a main component for integrating a cathode electrode and another current collector, (3) Ni thin film clad on the surface of another current collector, or (4) Ni formed in a mesh on the surface of another current collector.
【００１３】粉末は集電板とカソ−ド電極の間の隙間を
埋めて、接触面積を大きくするのに有効であり、またろ
う材がカソ−ド電極と集電板とを接着することにより、
それぞれ接触抵抗を小さくすることができ、これによっ
て高い電池性能が得られる。また、それぞれ軟質のＮｉ
薄膜またはメッシュ状Ｎｉ薄膜を介在させることによっ
て集電板とカソ−ド電極間の接触抵抗を小さくすること
ができる。The powder is effective to fill the gap between the current collector plate and the cathode electrode and increase the contact area, and the brazing material is used to bond the cathode electrode and the current collector plate. ,
In each case, the contact resistance can be reduced, thereby obtaining high battery performance. In addition, soft Ni
By interposing a thin film or a mesh Ni thin film, the contact resistance between the current collector and the cathode electrode can be reduced.
【００１４】[0014]
【発明の実施の形態】以下本発明の実施の形態を図によ
って説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.
【００１５】実施の形態１ 図１は本発明の要部を拡大した図で、集電板９とカソ−
ド電極３の間にＮｉ粉末による金属充填層２１が介在し
ている。電気的な等価回路は、図１右部分に示すよう
に、金属充填層２１自身の抵抗Ｒ２１、金属充填層２１
・集電板９間の接触抵抗及び金属充填層２１・カソ−ド
電極３間の接触抵抗の３つを合わせた抵抗Ｒ２１(３・２
１・９)と、集電板９自身の抵抗Ｒ９と、カソ−ド電極３
自身の抵抗Ｒ３とで構成される。ここでＲ２１(３・２１
・９)は従来電池の集電板９とカソ−ド電極３との接触抵
抗Ｒ(３・９)に相当する。Embodiment 1 FIG. 1 is an enlarged view of a main part of the present invention.
A metal-filled layer 21 of Ni powder is interposed between the gate electrodes 3. As shown in the right part of FIG. 1, the electrical equivalent circuit includes the resistance R21 of the metal-filled layer 21 itself and the resistance of the metal-filled layer 21.
A resistance R21 (3.2) which is a combination of the contact resistance between the current collector 9 and the metal-filled layer 21 and the contact resistance between the cathode electrodes 3.
1.9), the resistance R9 of the current collector 9 itself, and the cathode electrode 3
It consists of its own resistor R3. Here, R21 (3.21)
(9) corresponds to the contact resistance R (3.9) between the current collector plate 9 and the cathode electrode 3 of the conventional battery.
【００１６】金属充填層２１は、アノ−ド電極２あるい
はカソ−ド電極３を製造する原料粉と同じＮｉ粉(例え
ばINCO社製＃２５５)１００重量部を水５０重量部、増
粘剤ダイセル１１００（ダイセル工業)１．５重量部と
で良く混練し、ペ−スト状になし、これを集電板９に塗
布し、かつカソ−ド電極３と貼り合わせ、１００℃で１
時間加圧しながら乾燥して、増粘剤が消散した粉末の層
を得た。これによって集電板９とカソ−ド電極３の間に
形成される部材の平坦度（電極の寸法精度±３０μｍ、
集電板の寸法精度±１５μｍ）に起因するわずかな隙間
が埋め込まれ接触面積が増大し、接触抵抗が低減でき
る。図２に、金属充填層２１の有無、即ち本発明にかか
る金属充填層２１を含む集電板９・カソ−ド電極３間の
抵抗Ｒ２１(３・２１・９)と、従来法による集電板９・カ
ソ−ド電極３間の抵抗Ｒ(３・９)とを示す。金属充填層
２１が有る場合には、無しに比較して抵抗が１/２に低
下し、かつバラツキも１/３以下に低減している結果を
得た。The metal-filled layer 21 is composed of 100 parts by weight of the same Ni powder (for example, # 255 manufactured by INCO) as the raw material powder for producing the anode electrode 2 or the cathode electrode 3, 50 parts by weight of water, and the thickener Daicel. 1100 (Daicel Industries) well kneaded with 1.5 parts by weight to form a paste, which was applied to the current collector 9 and bonded to the cathode electrode 3 at 1100C.
Drying under pressure for an hour gave a powder layer in which the thickener had dissipated. As a result, the flatness of the member formed between the current collector 9 and the cathode electrode 3 (the dimensional accuracy of the electrode ± 30 μm,
A small gap caused by the dimensional accuracy of the current collector (± 15 μm) is buried, the contact area increases, and the contact resistance can be reduced. FIG. 2 shows the presence or absence of the metal-filled layer 21, that is, the resistance R21 (3.21.9) between the current collector 9 and the cathode electrode 3 including the metal-filled layer 21 according to the present invention, and the current collection by the conventional method. The resistance R (3.9) between the plate 9 and the cathode electrode 3 is shown. When the metal-filled layer 21 was present, the resistance was reduced to 1/2 and the variation was reduced to 1/3 or less as compared with the case without the metal-filled layer 21.
【００１７】以上説明したように、本実施の形態によれ
ば集電板９とカソ−ド電極３の間にＮｉ粉末による金属
充填層を形成することによって隙間が埋め込まれ、接触
抵抗を１/２以下にできる効果が有る。As described above, according to the present embodiment, a gap is buried by forming a metal-filled layer of Ni powder between the current collector 9 and the cathode electrode 3, thereby reducing the contact resistance by 1 /. There is an effect that can be reduced to 2 or less.
【００１８】なお、金属充填層２１の構成法において、
必ずしもペ−スト状の物から構成しなければならないも
のではなく、例えば電池運転の温度で軟くてなじみのよ
いＮｉの多孔体であるアノ−ド電極を薄く成形したもの
でも良く、この場合には取扱性が大幅に改善できる効果
が付加される。また金属充填層を構成する金属は、Ｎｉ
に限らず、電解質に対して耐食性のよいＮｉ−Ａｌ、Ａ
ｕ、Ａｕ−ＰｄまたはＣｏなどを用いることもできる。In the method of forming the metal-filled layer 21,
It is not always necessary to constitute a paste-like material, and for example, an anode electrode which is a soft and familiar Ni porous material at the temperature of battery operation may be thinly formed. Has the effect of greatly improving handling. The metal constituting the metal-filled layer is Ni
Ni—Al, A with good corrosion resistance to the electrolyte
u, Au-Pd or Co can also be used.
【００１９】実施の形態２ ニッケルを主成分としたニッケルろう BNi-2(JIS.Z.326
5)を粉末状にしたものを水に分散させ集電板９に薄く塗
布し、これを乾燥した後カソ−ド電極３と貼りあわせ、
１０００℃真空炉でろう付けをし、集電板９とカソ−ド
電極３を一体化した。なお、カソ−ド電極３は酸化物
(ＮｉＯ)が主成分であるが、骨格には金属ニッケル(Ｎ
ｉ)が残っているのでろう付けが可能である。またろう
は薄い層で、カソード電極の多孔性を保ったまま付着す
る。この実施の形態におけるろう付け層を含む集電板９
・カソ−ド電極３間の抵抗Ｒ２１(３・２１・９)はほぼ０
Ωで、いわゆる接触抵抗が０となった。また単独では強
度が小さく取扱い性の悪かったカソ−ド電極３が強度の
大きい集電板９と一体化することによって、取扱い性が
非常に良くなった。Embodiment 2 Nickel solder containing nickel as a main component BNi-2 (JIS.Z.326)
5) The powdered product was dispersed in water, thinly applied to a current collector 9, dried, and then bonded to a cathode electrode 3.
The current collector plate 9 and the cathode electrode 3 were integrated by brazing in a vacuum furnace at 1000 ° C. The cathode electrode 3 is made of an oxide.
(NiO) is the main component, but the metal skeleton (N
Since i) remains, brazing is possible. In addition, the wax is a thin layer and adheres while maintaining the porosity of the cathode electrode. Current collector plate 9 including brazing layer in this embodiment
The resistance R21 (3.21.9) between the cathode electrodes 3 is almost zero
Ω, the so-called contact resistance became zero. In addition, the cathode electrode 3, which had a small strength and was not easy to handle by itself, was integrated with the current collector plate 9 having a large strength, so that the handleability was extremely improved.
【００２０】この実施の形態では接触抵抗がほとんど皆
無となった上に、部材の取扱性が良くなる効果が付加さ
れた。In this embodiment, there is almost no contact resistance, and an effect of improving the handleability of the member is added.
【００２１】実施の形態３ 集電板９が、７０μm厚のＮｉと３００μmのSUS316Lの
クラッド品で、Ｎｉがカソ−ド電極３側となるように配
置し、クラッドを含む集電板９とカソード電極３間の抵
抗Ｒ２１(３・２１・９)を実施の形態１と同様に測定し、
その結果を従来例と比較して図３に示した。この実施の
形態では従来例に比べ抵抗１７が１/３以下に低下し、
経時的にも安定していることが分かった。また、実施の
形態１の発明(図２参照)に比較しても１/１.５となり、
Ｎｉの緻密な層であっても、溶融炭酸塩型燃料電池のよ
うに６５０℃程度の高温で作動するような場合には非常
に軟らかくなり、集電板９とカソ−ド電極３との間の密
着状態が実施の形態１と同様に改善され、その上、粉末
で構成した金属充填層２１より７０μm厚のＮｉクラッ
ド層の方が抵抗が低いので、全体として抵抗が低くなる
ものである。Embodiment 3 The current collector 9 is a clad product of Ni having a thickness of 70 μm and SUS316L having a thickness of 300 μm, and is arranged so that Ni is on the cathode electrode 3 side. The resistance R21 (3.21.9) between the electrodes 3 was measured in the same manner as in the first embodiment,
The result is shown in FIG. 3 in comparison with the conventional example. In this embodiment, the resistance 17 is reduced to 1/3 or less as compared with the conventional example.
It was found that it was stable over time. Also, it is 1 / 1.5 compared to the invention of Embodiment 1 (see FIG. 2),
Even if it is a dense layer of Ni, when it is operated at a high temperature of about 650 ° C. like a molten carbonate type fuel cell, it becomes very soft, and the gap between the current collector plate 9 and the cathode electrode 3 becomes large. Is improved in the same manner as in the first embodiment. In addition, since the Ni clad layer having a thickness of 70 μm is lower in resistance than the metal-filled layer 21 made of powder, the resistance is lower as a whole.
【００２２】実施の形態４ カソ−ド電極３の一方の面に図４に示すようなメッシュ
状のＮｉ膜２２を真空蒸着し、これを蒸着面が集電板９
側となるように配置し、抵抗１７を実施の形態１と同様
に測定し、その結果を従来例と比較して図５に示した。
この実施の形態では従来例に比べ、メッシュ状Ｎｉ膜２
２を含む集電板９・カソ−ド電極３間の抵抗Ｒ２１(３・
２１・９)が２/３以下に低減できる効果と共に、金属充
填層が電極と一体化しているのでその取扱性が非常に良
好になる効果が付加された。Embodiment 4 A mesh-like Ni film 22 as shown in FIG. 4 is vacuum-deposited on one surface of a cathode electrode 3, and this is deposited on the current collector plate 9.
The resistance 17 is measured in the same manner as in the first embodiment, and the result is shown in FIG. 5 in comparison with the conventional example.
In this embodiment, a mesh-like Ni film 2
The resistor R21 (3 · 3) between the current collector 9 including the cathode 2 and the cathode electrode 3
In addition to the effect of reducing 21.9) to 2/3 or less, the effect that the handleability becomes very good is added because the metal-filled layer is integrated with the electrode.
【００２３】なおメッシュ状のＮｉ膜２２の形成法は真
空蒸着によるのみではなく、イオンスパッタ、化学蒸着
など多くの方法が有ることを付記しておく。It should be noted that there are many methods for forming the mesh-like Ni film 22 such as ion sputtering and chemical vapor deposition, as well as vacuum deposition.
【００２４】[0024]
【発明の効果】以上説明したように本発明によれば、集
電板とカソ−ド電極との間にＮｉを主成分とする金属充
填層を設けることによって、集電板とカソ−ド電極との
間の密着性が向上し、接触抵抗を小さくすることが出
来、これによって高い電池性能を得られる効果が有る。As described above, according to the present invention, by providing a metal-filled layer containing Ni as a main component between the current collector and the cathode electrode, the current collector and the cathode electrode are provided. And the contact resistance can be reduced, which has the effect of obtaining high battery performance.
【図１】本発明の溶融炭酸塩型燃料電池の構成と各構成
部分の電気抵抗の等価回路を示す図。FIG. 1 is a diagram showing a configuration of a molten carbonate fuel cell of the present invention and an equivalent circuit of electric resistance of each component.
【図２】本発明による燃料電池で、Ｎｉ粉末を充填した
カソ−ド電極と集電板間の抵抗の測定結果を示す図。FIG. 2 is a view showing a measurement result of a resistance between a cathode electrode filled with Ni powder and a current collector plate in the fuel cell according to the present invention.
【図３】本発明による燃料電池で、ニッケルろうで接着
したカソ−ド電極と集電板間の抵抗の測定結果を示す
図。FIG. 3 is a view showing a measurement result of a resistance between a cathode electrode adhered with nickel brazing and a current collector plate in the fuel cell according to the present invention.
【図４】本発明の燃料電池で、メッシュ状Ｎｉ薄膜を形
成したカソ−ド電極の平面図。FIG. 4 is a plan view of a cathode electrode on which a mesh Ni thin film is formed in the fuel cell of the present invention.
【図５】本発明の燃料電池で、メッシュ状Ｎｉ薄膜を形
成したカソ−ド電極と集電板間の抵抗の測定結果を示す
図。FIG. 5 is a view showing a measurement result of a resistance between a cathode electrode on which a mesh Ni thin film is formed and a current collector in the fuel cell of the present invention.
【図６】溶融炭酸塩型溶融炭酸塩型燃料電池の構成を示
す縦断面図。FIG. 6 is a longitudinal sectional view showing a configuration of a molten carbonate type molten carbonate fuel cell.
【図７】溶融炭酸塩型燃料電池の電気抵抗を示す等価回
路図。FIG. 7 is an equivalent circuit diagram showing the electric resistance of the molten carbonate fuel cell.
１…マトリックス ２…アノ−ド電極 ３…カソ−ド電極 ９…集電板 ２１…金属充填層 ２２…Ｎｉ膜 DESCRIPTION OF SYMBOLS 1 ... Matrix 2 ... Anode electrode 3 ... Cathode electrode 9 ... Current collector 21 ... Metal filling layer 22 ... Ni film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山賀 賢史 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 山口 雅教 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenshi Yamaga 7-1-1, Omikacho, Hitachi City, Ibaraki Prefecture Inside Hitachi Research Laboratory, Hitachi, Ltd. (72) Masanori Yamaguchi 7, Omikamachi, Hitachi City, Ibaraki Prefecture No. 1 in the Hitachi Research Laboratory, Hitachi, Ltd.
Claims (5)
それぞれ金属からなるアノ−ド電極と一集電板が順に配
置され、他方に金属酸化物からなるカソ−ド電極と金属
からなる別の集電板が順に配置され、両集電板側から供
給される反応ガスが電気化学反応して電気エネルギーを
生成する溶融炭酸塩型燃料電池において、前記カソ−ド
電極と前記別の集電板との間に多孔性又は軟質の金属充
填層を設けたことを特徴とする溶融炭酸塩型燃料電池。1. An anode plate made of a metal and a current collector are arranged in this order on one side of an electrolyte plate containing an electrolyte, and the other is made of a cathode electrode made of a metal oxide and a metal on the other side. In the molten carbonate fuel cell in which the reaction gas supplied from both the current collector plates is electrochemically reacted to generate electric energy, the cathode electrode and the separate current collector A molten carbonate fuel cell, wherein a porous or soft metal-filled layer is provided between the fuel cell and the plate.
を主成分とする粉末から構成されていることを特徴とす
る請求項１記載の溶融炭酸塩型燃料電池。2. The method according to claim 1, wherein the metal-filled layer is made of Ni powder or Ni powder.
2. The molten carbonate fuel cell according to claim 1, wherein the molten carbonate fuel cell is composed of a powder mainly composed of:
う材で、前記カソ−ド電極と前記別の集電板とを一体化
させたことを特徴とする請求項１記載の溶融炭酸塩型燃
料電池。3. The molten carbonic acid according to claim 1, wherein said metal-filled layer is a brazing material containing Ni as a main component, and said cathode electrode and said another current collector are integrated. Salt type fuel cell.
クラッドされたＮｉ薄膜であることを特徴とする請求項
１記載の溶融炭酸塩型燃料電池。4. The molten carbonate fuel cell according to claim 1, wherein the metal-filled layer is a Ni thin film clad on the surface of the another current collector plate.
にメッシュ状に形成されたＮｉ薄膜であることを特徴と
する請求項１記載の溶融炭酸塩型燃料電池。5. The molten carbonate fuel cell according to claim 1, wherein the metal-filled layer is a Ni thin film formed in a mesh on the surface of the another current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9045129A JPH10241715A (en) | 1997-02-28 | 1997-02-28 | Fused carbonate type fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9045129A JPH10241715A (en) | 1997-02-28 | 1997-02-28 | Fused carbonate type fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10241715A true JPH10241715A (en) | 1998-09-11 |
Family
ID=12710669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9045129A Pending JPH10241715A (en) | 1997-02-28 | 1997-02-28 | Fused carbonate type fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10241715A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001069704A1 (en) * | 2000-03-15 | 2001-09-20 | Ineos Chlor Limited | End plates and current collector plates for fuel cells |
| US6790554B2 (en) | 1998-10-08 | 2004-09-14 | Imperial Chemical Industries Plc | Fuel cells and fuel cell plates |
| JP2009277389A (en) * | 2008-05-12 | 2009-11-26 | Central Res Inst Of Electric Power Ind | Fuel cell |
-
1997
- 1997-02-28 JP JP9045129A patent/JPH10241715A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6790554B2 (en) | 1998-10-08 | 2004-09-14 | Imperial Chemical Industries Plc | Fuel cells and fuel cell plates |
| WO2001069704A1 (en) * | 2000-03-15 | 2001-09-20 | Ineos Chlor Limited | End plates and current collector plates for fuel cells |
| EP1511105A1 (en) * | 2000-03-15 | 2005-03-02 | Ineos Chlor Enterprises Limited | End plates and current collector plates for fuel cells |
| JP2009277389A (en) * | 2008-05-12 | 2009-11-26 | Central Res Inst Of Electric Power Ind | Fuel cell |
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