JPS6386366A - Solid electrolyte fuel cell - Google Patents
Solid electrolyte fuel cellInfo
- Publication number
- JPS6386366A JPS6386366A JP61231787A JP23178786A JPS6386366A JP S6386366 A JPS6386366 A JP S6386366A JP 61231787 A JP61231787 A JP 61231787A JP 23178786 A JP23178786 A JP 23178786A JP S6386366 A JPS6386366 A JP S6386366A
- Authority
- JP
- Japan
- Prior art keywords
- carbonate
- fuel cell
- solid electrolyte
- oxide
- electrolyte fuel
- 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 37
- 239000007784 solid electrolyte Substances 0.000 title claims description 19
- 239000003792 electrolyte Substances 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 15
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000007800 oxidant agent Substances 0.000 claims abstract description 11
- AHKZTVQIVOEVFO-UHFFFAOYSA-N oxide(2-) Chemical compound [O-2] AHKZTVQIVOEVFO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims abstract description 8
- 150000008041 alkali metal carbonates Chemical class 0.000 claims abstract description 8
- 239000002737 fuel gas Substances 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract 4
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(III) oxide Inorganic materials O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 claims abstract 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract 2
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract 2
- 239000002001 electrolyte material Substances 0.000 claims description 5
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 claims 3
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 claims 1
- 229910000484 niobium oxide Inorganic materials 0.000 claims 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 229910000018 strontium carbonate Inorganic materials 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 235000015320 potassium carbonate Nutrition 0.000 abstract 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 10
- 239000011812 mixed powder Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- ZFTFAPZRGNKQPU-UHFFFAOYSA-N dicarbonic acid Chemical compound OC(=O)OC(O)=O ZFTFAPZRGNKQPU-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/244—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes with matrix-supported molten electrolyte
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
- H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
-
- 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
- H01M8/14—Fuel cells with fused electrolytes
- H01M2008/147—Fuel cells with molten carbonates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0048—Molten electrolytes used at high temperature
- H01M2300/0051—Carbonates
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、固体電解質燃料電池に係り、特に。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to solid electrolyte fuel cells, and more particularly to solid electrolyte fuel cells.
単位電池を積層化できるようにした固体電解質燃料電池
に関する。This invention relates to a solid electrolyte fuel cell in which unit cells can be stacked.
（従来の技術）
固体電解質燃料電池は１通常、 ？ｌｉ解質として安定
化されたＺ「０２を用いている。そして。(Prior art) Solid electrolyte fuel cells usually have the following characteristics: Z'02 stabilized as li solute is used. And.
ＺｒＯ２を電解質として用いた従来の固体電解質燃料電
池は、一般に、多孔質チューブの表面に。Conventional solid electrolyte fuel cells using ZrO2 as an electrolyte generally have a porosity on the surface of a porous tube.
酸化剤極、電解質層、燃料極からなる三層構造の単位電
池を焼結によって形成し、この１１１位電池を軸ノｊ向
へ複数配列したものとなっている。このような形状を採
用する理由は、ＺｒＯ２は電気抵抗率が高いため薄膜化
する必要があること、薄膜であるが故に機械的に脆いこ
と、固体電解質であるが故にガスシールが困難であるこ
と、単位電池同志を接続するためのコネクタの酸化を防
止することが困難であることなどによる。A unit cell with a three-layer structure consisting of an oxidizer electrode, an electrolyte layer, and a fuel electrode is formed by sintering, and a plurality of these 111 cells are arranged in the axial direction. The reasons for adopting this shape are that ZrO2 has a high electrical resistivity, so it needs to be made into a thin film, that it is mechanically fragile because it is a thin film, and that gas sealing is difficult because it is a solid electrolyte. This is because it is difficult to prevent oxidation of the connectors used to connect unit batteries.
しかしながら、上記のように全体が円筒形状であるため
に、大容量の集合電池を形成しようとしても、単位電池
の大型化、単位電池相互の接続。However, as described above, since the entire unit is cylindrical, even if an attempt is made to form a large-capacity assembled battery, it is difficult to increase the size of the unit batteries and connect the unit batteries to each other.
単位電池へのガス供給、冷却などの面で構造上。Structural aspects such as gas supply and cooling to unit cells.
製造」−２強ｍ−ｔ：の問題が生じ、空間積載効率（単
位体積当りに占める超電気素子体積の割合い。）の良い
集合電池を形成することが困難であった。A problem arose in the manufacturing process, and it was difficult to form an assembled battery with good space loading efficiency (ratio of superelectric element volume per unit volume).
（発明が解決しよとする問題点）
上述の如く、従来の固体電解質燃料電池にあっては１円
筒形状を採用しなければならないために空間積載効率の
良い大容量の集合電池を形成することが困難であった。(Problems to be Solved by the Invention) As mentioned above, since conventional solid electrolyte fuel cells have to adopt a single cylindrical shape, it is difficult to form a large-capacity assembled battery with good space loading efficiency. was difficult.
そこで本発明は、構成的に単位電池の大型化が容易であ
るばかりか、単位電池相互の接続、各単位電池へのガス
供給、冷却、ガスシールが容易に行なえ、空間積載効率
の良い大容量集合電池の実現に寄与できる固体電解質燃
料電池を提供することを目的としている。Therefore, the present invention not only makes it easy to increase the size of unit batteries in terms of structure, but also allows easy connection of unit batteries, gas supply to each unit battery, cooling, and gas sealing, and a large capacity with good space loading efficiency. The aim is to provide a solid electrolyte fuel cell that can contribute to the realization of collective batteries.
［発明の構成］
（問題点を解決するための手段）
本発明に係る固体電解質燃料電池では、酸化物イオン導
電性電解質物質とアルカリ金属炭酸塩またはアルカリ土
類炭酸塩とを含んで平板状に形成された電解質層の両面
に多孔質の燃料極と酸化剤極とを配して単位電池を構成
し、これら単位電池を両面に燃料ガス案内路と酸化剤ガ
ス案内路とを備えた導電性のセパレータを介して１（数
積層している。[Structure of the Invention] (Means for Solving the Problems) The solid electrolyte fuel cell according to the present invention includes a flat electrolyte fuel cell containing an oxide ion conductive electrolyte material and an alkali metal carbonate or an alkaline earth carbonate. A unit cell is constructed by arranging a porous fuel electrode and an oxidant electrode on both sides of the formed electrolyte layer, and these unit cells are connected to a conductive cell with a fuel gas guide path and an oxidant gas guide path on both sides. 1 (several layers are laminated through a separator).
（作用）
合釘された炭酸塩は、動作温度下で電解質層に塑性を付
与し、電解質層の機械的強度を向」ニさせる。この機械
的強度の向ヒは中位電池の積層化を可能とする。また、
炭酸塩は、酸化物イオンに対して次の緩衝機能を発揮す
る。(Function) The doweled carbonate imparts plasticity to the electrolyte layer under operating temperatures and improves the mechanical strength of the electrolyte layer. This mechanical strength advantage allows for the stacking of medium-sized batteries. Also,
Carbonates exhibit the following buffering function for oxide ions.
ＣＯ３２−□ ００２ ＋ ０２−
この結果、酸化剤極および燃料極における酸化物イオン
の１ａ反分極が低減され、電解質層が比較的圧肉の平板
状であっても電解質層の電気抵抗率の増加が抑制される
。また、合釘された炭酸塩はイオン伝導性を向上させ、
この結果、従来の固体電解質燃料電池より低い温度での
動作を可能化し。CO32-□ 002 + 02- As a result, the 1a antipolarization of oxide ions at the oxidizer electrode and the fuel electrode is reduced, and the electrical resistivity of the electrolyte layer increases even if the electrolyte layer has a relatively thick plate shape. is suppressed. Doweled carbonates also improve ionic conductivity,
As a result, they can operate at lower temperatures than conventional solid oxide fuel cells.
セパレータに、たとえばステンレス鋼の使用をｉ■能化
する。さらに、含有された炭酸塩は運転湯度で溶融して
ウェットシール機能を発揮する。このように炭酸塩を含
有させたことによって、空間積載効率を最も向上させう
る形態、つまり単位電池の積層化が可能となる。For example, it is possible to use stainless steel for the separator. Furthermore, the carbonate contained melts at the operating hot water temperature and exhibits a wet sealing function. By including the carbonate in this way, it becomes possible to form a structure that can most improve the spatial loading efficiency, that is, to stack unit cells.
（実施例） 以下２本発明の詳細な説明する。(Example) Two aspects of the present invention will be described in detail below.
実施例１ 図に示すような燃料電池積層体１を組立てた。Example 1 A fuel cell stack 1 as shown in the figure was assembled.
この燃料電池積層体１は、エンドプレート２ａ。This fuel cell stack 1 has an end plate 2a.
２ｂ間に、１（数の単位電池３を導電性のセパレータ４
を介して積層したものとなっている。A conductive separator 4 is placed between 2b and 1 unit battery 3.
It is laminated with .
単位電池３は、Ｎｉ粉末を焼結して得た多孔質の酸化剤
極５ａとＮ ｉ ／ Ｃｒ −９０／１０ （Ｉｍ比）
粉末を焼結して得た多孔質の燃料極５ｂとの間に電解質
層６を介在させたものとなっている。電解質層６は、Ｌ
ｉ２ ＣＯ３／に２ ＣＯ３鴫６２／ ３８（モル比
）からなるアルカリ金属炭酸塩混合粉末と、 Ｂ ｉ
２０３ ／Ｅ ｒ２０３−８０／２０（モ／ｌ／比）か
らなる酸化物イオン導電性物質の混合粉末とを体積比が
３ ；７となるように混合し、これをポリエステルをバ
インダーとしてシート状に形成して得たものである。The unit battery 3 includes a porous oxidizer electrode 5a obtained by sintering Ni powder and a Ni/Cr -90/10 (Im ratio)
An electrolyte layer 6 is interposed between the porous fuel electrode 5b obtained by sintering powder. The electrolyte layer 6 is L
an alkali metal carbonate mixed powder consisting of 62/38 (molar ratio) of 2 CO3 to 2 CO3;
203/E r203-80/20 (mol/l/ratio) mixed powder of oxide ion conductive material so that the volume ratio is 3:7, and this is formed into a sheet using polyester as a binder. It is obtained by forming.
セパレータ４は、ステンレスｎ４（ｓＵｓ３１６）で形
成されたもので、その両面には互いに直交する方向へ延
びるガス案内溝４ａ、４ｂが形成されている。The separator 4 is made of stainless steel N4 (sUs316), and gas guide grooves 4a and 4b extending in directions orthogonal to each other are formed on both surfaces thereof.
一方、角型環状のアルミナファイバーで形成されたフェ
ルト７ａ、７ｂ、７ｃ、７ｄを、マニホールドｇａ、８
ｂ、８ｃ、８ｄのフランジ部にそれぞれ貼り合わせ、こ
のフェルト７ａ〜７ｂの表面にホウ酸ガラス粉を塗り付
けた。フェルト７８〜７ｄは溶融ホウ酸ガラスを浸透さ
せて保持し。On the other hand, felts 7a, 7b, 7c, and 7d formed of rectangular annular alumina fibers are placed in the manifold ga, 8
They were attached to the flange portions of felts 7a to 8d, respectively, and boric acid glass powder was applied to the surfaces of the felts 7a to 7b. The felts 78 to 7d are impregnated with molten boric acid glass and held therein.
上、記ホウ酸ガラスとでシール体を構成するものである
。そして、上記シール体を設けたマニホールド８ａ〜８
ｄを燃料電池積層体１の各側面に当てがい９図示しない
手段で締付けて燃料７代地を構成した。The above-mentioned boric acid glass constitutes a sealing body. And manifolds 8a to 8 provided with the above-mentioned seal bodies
d was applied to each side of the fuel cell stack 1 and tightened by means not shown to form a fuel 7 bonding area.
このように構成された燃料電池を６５０’Ｃに昇温させ
、マニホールド８ａ側からマニホールド８Ｃ側へ向ケチ
燃料ガス（Ｈ２／ ＣＯｚ −８０／ ２０体積比）Ｐ
を通流させるとともにマニホールド８ｂからマニホール
ド８ｄ側へ向けて酸化剤ガス（Ａ ｉ ｒ／ＣＯ２−７
０／３０体積比）Ｑを通流させて発電を行なったところ
、 ０．１５Ａ／′ｄ負荷時で０．６ｖ電圧を得た。The temperature of the fuel cell configured in this way is raised to 650'C, and a stingy fuel gas (H2/COz -80/20 volume ratio) P is pumped from the manifold 8a side to the manifold 8C side.
At the same time, the oxidant gas (A i r / CO2-7
When electricity was generated by passing 0/30 volume ratio) Q, a voltage of 0.6V was obtained at a load of 0.15A/'d.
比較のため、 Ｚ ｒ ０２ ／ Ｃａ ０＝９５１
５ （重量比）の混合粉末をホットプレスで２Ｍ圧の
板状にしてなる安定化されたジルコニアを電解質層とし
て使用し、同様の実験を行なったところ、 ０．１５Ａ
／〜負荷時で０．３ Ｖ程度であった。For comparison, Z r 02 / Ca 0 = 951
When a similar experiment was conducted using stabilized zirconia made by hot pressing a mixed powder of 5 (weight ratio) into a plate shape at 2M pressure as the electrolyte layer, the result was 0.15A.
The voltage was about 0.3 V under load.
実施例２
Ｌ ｉ ２ ＣＯ３／ Ｋ２ ＣＯ３＝０２／３８ （
モル比）からなるアルカリ金属炭酸塩混合粉末と。Example 2 Li 2 CO3/ K2 CO3=02/38 (
molar ratio) with an alkali metal carbonate mixed powder.
Ｃａ ＣＯ３／Ｓ ｒ ＣＯ３−５０１５０（モル比）
からなるアルカリ土類炭酸塩混合粉末と、Ｂｉ２Ｏ３／
Ｙ２Ｏ３−８０／２０ （モル比）からなる酸化物イオ
ン導電性物質の混合粉末とを体積比で２０１５／７５の
割合いに混合し、この混合粉末を補強材としてのカンタ
ルメツシュまたはＦｅ−Ｃｒ−Ａｌ！合金のメツシュと
一緒にホットプレスして電解質層６を作製した。この電
解質層６を図に示した燃料電池に組み込んで実施例１と
同様の試験を行なったところ、実施例１と同様の結果が
得られた。Ca CO3/S r CO3-50150 (molar ratio)
Alkaline earth carbonate mixed powder consisting of Bi2O3/
A mixed powder of an oxide ion conductive material consisting of Y2O3-80/20 (molar ratio) is mixed at a volume ratio of 2015/75, and this mixed powder is used as a reinforcing material such as Canthal mesh or Fe-Cr-Al. ! The electrolyte layer 6 was prepared by hot pressing together with an alloy mesh. When this electrolyte layer 6 was incorporated into the fuel cell shown in the figure and the same test as in Example 1 was conducted, the same results as in Example 1 were obtained.
実施例３
炭酸塩保持材としてのＬｉＡノ０２ファイバーと、 Ｌ
ｉ２ ＣＯ３／に２ ＣＯ３＝８２／３８ （モル比
）からなるアルカリ金属炭酸塩混合粉末と。Example 3 LiAno02 fiber as carbonate retaining material and L
An alkali metal carbonate mixed powder consisting of i2 CO3/2 CO3 = 82/38 (mole ratio).
Ｂ ｉ ２０３ ／Ｙ２０３ ／Ｎｂ２０３−７６１５
／１９モル比）からなる酸化物イオン導電性物質の混
合粉末とを体積比で５ ／２０／７５の割合いに混合し
。B i 203 /Y203 /Nb203-7615
/19 molar ratio) and a mixed powder of an oxide ion conductive material in a volume ratio of 5/20/75.
この混合粉末をホットプレスして電解質層６を作製した
。この電解質層６を図に示した燃料電池に組み込んで実
施例１と同様の試験を行なったところ、実施例１と同様
の結果が得られた。This mixed powder was hot pressed to produce an electrolyte layer 6. When this electrolyte layer 6 was incorporated into the fuel cell shown in the figure and the same test as in Example 1 was conducted, the same results as in Example 1 were obtained.
なお、炭酸塩の混入割合いは５〜４０体積％が好ましい
。すなわち、４０体積０６を越えると、熱サイクル時に
炭酸塩の体積変化で電解質層にクラックか入り易くなり
、また、５体積％未満であると。Note that the mixing ratio of carbonate is preferably 5 to 40% by volume. That is, if it exceeds 40 volume 06, cracks will easily occur in the electrolyte layer due to volume change of carbonate during thermal cycling, and if it is less than 5 volume %.
分極が急増するからである。また、炭酸塩の保持材とし
て、ＬｉＡ！！０２．ＺｒＯ２゜５ｒＴｉ０３．ＣｅＯ
２，チタン酸バリウム。This is because polarization increases rapidly. In addition, as a carbonate retention material, LiA! ! 02. ZrO2゜5rTi03. CeO
2. Barium titanate.
ＬｉＺｒＯ２，チタン酸リチウム、ＡＪ２０３ 。LiZrO2, lithium titanate, AJ203.
Ｓｉ３Ｎ４．ＳｉＣの徹扮末を混入してもよい。Si3N4. A complete SiC powder may be mixed.
さらに補強材として、ＺｒＯ２繊維。Furthermore, ZrO2 fiber is used as a reinforcing material.
ＬｉＺｒＯ２繊維、Ａ１２ｏ、、繊維や耐食処理および
絶縁処理の施された金属メツシュを用いてもよい。また
、セパレータの形状は２図に示した形状に限らず、ガス
案内機能と集電機能とを有する波板を用いてもよい。燃
料極側のセパレータを海綿状金属で構成してもよい。ま
た、アルカリ土類炭酸塩としては炭酸バリウムも使用で
きる。また。LiZrO2 fibers, A12o fibers, or metal meshes subjected to corrosion-resistant treatment and insulation treatment may also be used. Moreover, the shape of the separator is not limited to the shape shown in FIG. 2, and a corrugated plate having a gas guiding function and a current collecting function may be used. The separator on the fuel electrode side may be made of a spongy metal. Moreover, barium carbonate can also be used as the alkaline earth carbonate. Also.
マニホールドのシール体に供されるアルミナファイバー
フェルトの代りにＺｒＯ２フェルトやガラスウールのマ
ットを用いるようにしてもよい。ZrO2 felt or glass wool mat may be used in place of the alumina fiber felt provided for the seal body of the manifold.
［発明の効果］
以上のべたように１本発明によれば２炭酸塩を混入させ
たことによって、電解質層の機械的強反の向上化、板状
化、低動作温度化を図れ、加えてガスシールの容易化も
図れ、これによって空間積載効率の良い積層化を実現で
き、また積層化によってガス供給系統および冷却系統の
単純化も図れる固体電解質燃料電池を提供できる。[Effects of the Invention] As described above, according to the present invention, by incorporating dicarbonate, it is possible to improve the mechanical strength of the electrolyte layer, make it plate-shaped, and lower the operating temperature. It is also possible to provide a solid electrolyte fuel cell that facilitates gas sealing, thereby realizing stacking with good space loading efficiency, and also simplifying the gas supply system and cooling system by stacking.
図は本発明の一実施例に係る固体電解質燃料電池の分解
斜視図である。
１・・・燃料電池積層体、 ２ａ、 ２ｂ・・・エ
ンドプレート２３・・・単位電池、４・・・セパレータ
、５ａ、５ｂ・・・多孔質電極板、６・・・７電解質層
、８ａ〜８ｄ・・・マニホールド、Ｐ・・・燃料ガス、
Ｑ・・・酸化剤ガス。The figure is an exploded perspective view of a solid electrolyte fuel cell according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Fuel cell laminate, 2a, 2b...End plate 23...Unit cell, 4...Separator, 5a, 5b...Porous electrode plate, 6...7 Electrolyte layer, 8a ~8d...Manifold, P...Fuel gas,
Q: Oxidizing gas.
Claims (7)
酸塩またはアルカリ土類炭酸塩とを含んで平板状に形成
された電解質層の両面に多孔質の燃料極と酸化剤極とを
配して単位電池を構成し、これら単位電池を両面に燃料
ガス案内路と酸化剤ガス案内路とを備えた導電性のセパ
レータを介して複数積層してなることを特徴とする固体
電解質燃料電池。(1) A porous fuel electrode and an oxidizer electrode are arranged on both sides of an electrolyte layer formed into a flat plate containing an oxide ion conductive electrolyte material and an alkali metal carbonate or an alkaline earth carbonate. A solid electrolyte fuel cell comprising a plurality of unit cells stacked together with a conductive separator interposed therebetween having a fuel gas guide path and an oxidant gas guide path on both sides.
たはアルカリ土類炭酸塩の含有比は、５〜４０体積％で
あることを特徴とする特許請求の範囲第１項記載の固体
電解質燃料電池。(2) The solid electrolyte fuel cell according to claim 1, wherein the content ratio of the alkali metal carbonate or alkaline earth carbonate in the electrolyte is 5 to 40% by volume.
カリウムとの混合塩であることを特徴とする特許請求の
範囲第１項記載の固体電解質燃料電池。(3) The solid electrolyte fuel cell according to claim 1, wherein the alkali metal carbonate is a mixed salt of lithium carbonate and potassium carbonate.
カルシウム、炭酸ストロンチウムの中から選ばれた少な
くとも１種であることを特徴とする特許請求の範囲第１
項記載の固体電解質燃料電池。(4) Claim 1, wherein the alkaline earth carbonate is at least one selected from barium carbonate, calcium carbonate, and strontium carbonate.
The solid electrolyte fuel cell described in Section 1.
マスを主成分とするものであることを特徴とする特許請
求の範囲第１項記載の固体電解質燃料電池。(5) The solid electrolyte fuel cell according to claim 1, wherein the oxide ion conductive electrolyte material contains bismuth oxide as a main component.
マスと酸化エルビウムとであることを特徴とする特許請
求の範囲第５項記載の固体電解質燃料電池。(6) The solid electrolyte fuel cell according to claim 5, wherein the oxide ion conductive electrolyte material is bismuth oxide and erbium oxide.
マスと酸化イットリアと酸化ニオブとであることを特徴
とする特許請求の範囲第５項記載の固体電解質燃料電池
。(7) The solid electrolyte fuel cell according to claim 5, wherein the oxide ion conductive electrolyte material is bismuth oxide, yttria oxide, and niobium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231787A JPS6386366A (en) | 1986-09-30 | 1986-09-30 | Solid electrolyte fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61231787A JPS6386366A (en) | 1986-09-30 | 1986-09-30 | Solid electrolyte fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6386366A true JPS6386366A (en) | 1988-04-16 |
Family
ID=16929018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61231787A Pending JPS6386366A (en) | 1986-09-30 | 1986-09-30 | Solid electrolyte fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6386366A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002518794A (en) * | 1998-06-12 | 2002-06-25 | エイイーピー・エムテク・エル・エル・シー | Ceramic fuel cell |
| KR101480838B1 (en) * | 2011-12-30 | 2015-01-12 | 두산중공업 주식회사 | Manifold type fuel cell having fluid guide |
| JP2017517837A (en) * | 2014-04-04 | 2017-06-29 | ハルドール・トプサー・アクチエゼルスカベット | Electrically insulating three-layer gasket for SFOC unit |
-
1986
- 1986-09-30 JP JP61231787A patent/JPS6386366A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002518794A (en) * | 1998-06-12 | 2002-06-25 | エイイーピー・エムテク・エル・エル・シー | Ceramic fuel cell |
| KR101480838B1 (en) * | 2011-12-30 | 2015-01-12 | 두산중공업 주식회사 | Manifold type fuel cell having fluid guide |
| JP2017517837A (en) * | 2014-04-04 | 2017-06-29 | ハルドール・トプサー・アクチエゼルスカベット | Electrically insulating three-layer gasket for SFOC unit |
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