WO2021136321A1 - 一种平板式复合型固体氧化物燃料电池 - Google Patents

一种平板式复合型固体氧化物燃料电池 Download PDF

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WO2021136321A1
WO2021136321A1 PCT/CN2020/141138 CN2020141138W WO2021136321A1 WO 2021136321 A1 WO2021136321 A1 WO 2021136321A1 CN 2020141138 W CN2020141138 W CN 2020141138W WO 2021136321 A1 WO2021136321 A1 WO 2021136321A1
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anode
cathode
cover plate
metal cover
metal
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PCT/CN2020/141138
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English (en)
French (fr)
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王蔚国
何长荣
陈涛
彭军
翟惠娟
马晓
谢光华
陈治根
覃朝晖
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宁波索福人能源技术有限公司
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Publication of WO2021136321A1 publication Critical patent/WO2021136321A1/zh

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    • 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
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
    • H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
    • 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
    • H01M8/2425—High-temperature cells with solid electrolytes
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the utility model relates to the technical field of solid oxide fuel cells, in particular to a flat composite solid oxide fuel cell.
  • Solid oxide fuel cell Solid Oxide Fuel Cell, SOFC
  • SOFC Solid Oxide Fuel Cell
  • solid oxide fuel cells are generally divided into electrolyte-supported batteries (first generation), anode-supported batteries (second generation), metal-based support batteries (third-generation), and so on.
  • the electrolyte support battery and the anode support battery are both ceramic substrates.
  • the existing Chinese patent "A flat-plate type solid oxide fuel cell stack" with the patent number 201820917507.7 includes at least one battery unit, and each battery unit includes at least one single cell, an upper connector, an anode current collector, Cathode collector net and lower connector, two adjacent battery cells are stacked up and down and share the same connector; the sealing cover plate and the sealing support plate are sealed and fixed, the upper connector, the sealing cover plate, the sealing support plate, and the lower connection
  • the parts are equipped with anode air inlet and anode air outlet.
  • This structure seals the single cell up and down through the sealing cover plate and the sealing support plate, which improves the sealing structure and eliminates the need to perforate the single cell, solves the problem of string leakage, and improves the long-term stability and life of the battery stack.
  • the sealing cover plate and the sealing support plate are respectively provided with anode air intake holes and anode vent holes to form an outer manifold ventilation structure.
  • the single cell itself does not have vent holes, which avoids the micro-cracks generated in the single cell perforation and avoids The life of the stack is shortened due to the growth of microcracks.
  • the structure is more complicated.
  • a battery cell requires seven layers of single cell, upper connector, anode current collector, sealing cover plate net, sealing support plate, cathode current collector net and lower connector for sealing, and the assembly is also very inconvenient. , The structure needs further improvement.
  • the technical problem to be solved by the utility model is to provide a flat composite solid oxide fuel cell with simple structure and good stability in view of the above technical status.
  • the composite solid oxide fuel cell includes an anode metal cover plate, an anode metal splint, a single cell, a cathode metal splint, and a cathode metal cover arranged in order from bottom to top
  • the plate, the anode metal splint and the cathode metal splint are in a hollow structure.
  • the single cell is contained in the hollow structure of the anode metal splint and the cathode metal splint.
  • the anode metal splint and the cathode metal splint are clamped and fixed.
  • the anode metal cover plate is in contact with the single cell.
  • One side is provided with an anode gas flow channel for anode gas ventilation
  • the other side of the anode metal cover plate is a smooth surface
  • the side where the cathode metal cover plate contacts the single cell is provided with a cathode gas flow channel for cathode gas ventilation.
  • the other side of the cover is smooth.
  • the anode metal cover plate is provided with a concave surface corresponding to the hollow structure of the anode metal clamp plate on the side opposite to the single cell, the anode gas flow channel is arranged in the concave surface, and the cathode metal cover plate is opposite to the single cell side A concave surface corresponding to the hollow structure of the cathode metal clamping plate is provided, and the cathode gas flow channel is arranged in the concave surface.
  • the left and right sides of the anode metal cover plate are respectively provided with anode gas vent holes communicating with the anode gas flow channel, and the left and right sides of the anode metal clamp plate, the cathode metal clamp plate and the cathode metal cover plate are respectively provided with corresponding The anode gas vent hole, the anode gas enters from the anode gas vent hole on one side, and exits from the anode gas vent hole on the other side.
  • the left and right sides of the cathode metal cover plate are respectively provided with cathode gas vents communicating with the cathode gas flow channel, and the left and right outer sides of the anode metal cover plate, the anode metal clamp plate and the cathode metal clamp plate are respectively provided with corresponding cathodes. Gas vents, cathode gas enters from one side of the cathode gas vents, and exits from the other side of the cathode gas vents.
  • anode metal cover plate and the anode metal splint are sealed and bonded with a sealant
  • the anode metal splint and the cathode metal splint are sealed and bonded with a sealant
  • the cathode metal splint and the cathode metal cover are sealed with a sealant Sealing and bonding.
  • the side of the anode metal clamp plate and the cathode metal clamp plate contacted is sprayed with a ceramic coating as an insulation.
  • the single cell is one piece, or multiple single cells are tiled to form a window structure.
  • the utility model has the advantage that in addition to the ceramic battery slices, the metal cover plate and the metal plywood are also integrated with the ceramic battery slices as the basic structure to form a composite battery.
  • the single battery has an outer manifold.
  • the structure can include only a single cell, or a window structure composed of multiple single cells tiled.
  • the utility model has simple structure and good battery sealing, solves the problem of battery string leakage, improves the long-term operation stability of the battery, and is beneficial to the integrated manufacturing of the battery stack.
  • Figure 1 is a schematic diagram of the structure of embodiment 1 of the utility model
  • Figure 2 is an exploded view of Figure 1;
  • Figure 3 is a schematic diagram of the structure of embodiment 2 of the utility model
  • Fig. 4 is an exploded view of Fig. 3.
  • the single cell 3 of the composite solid oxide fuel cell is a piece, including an anode metal cover 1 and an anode which are arranged in sequence from bottom to top.
  • the anode metal cover plate 1 and the single cell 3 are provided with an anode gas flow channel 10 for anode gas ventilation, and the anode metal cover plate 1
  • the other side of the cathode metal cover plate 5 is a smooth surface, the side where the cathode metal cover plate 5 and the single cell 3 are in contact is provided with a cathode gas flow channel for cathode gas ventilation.
  • the other side of the cathode metal cover plate 5 is a smooth surface, and the anode metal clamp plate 2 and The cathode metal splint 4 has a hollow structure, and the hollow part is used for accommodating the single cell 3.
  • the single cell 3 is contained in the hollow structure of the anode metal splint 2 and the cathode metal splint 4 and is clamped and fixed by the anode metal splint 2 and the cathode metal splint 4.
  • the anode metal cover plate 1 is provided with a concave surface 12 corresponding to the hollow structure of the anode metal splint 2 on the side opposite to the single cell 3, the anode gas flow channel 10 is arranged in the concave surface 12, and the cathode metal splint 5 is opposite to the single cell 3
  • One side is provided with a concave surface corresponding to the hollow structure of the cathode metal clamping plate 4, and the cathode gas flow channel is arranged in the concave surface.
  • the single cell 3 is a ceramic cell.
  • the left and right sides of the anode metal cover plate 1 are respectively provided with anode gas vent holes 11 communicating with the anode gas flow channel 10, the anode metal clamp plate 2, the cathode metal clamp plate 4 and the cathode metal cover plate 5
  • Corresponding anode gas vent holes 21, 41, and 51 are respectively provided on the left and right sides of the Anode.
  • Anode gas enters from one side of the anode gas vent and exits from the other side of the anode gas vent.
  • the left and right outer sides of the cathode metal cover plate 5 are respectively provided with cathode gas vent holes 52 communicating with the cathode gas flow channel, and the left and right outer sides of the anode metal clamp plate 2, the cathode metal clamp plate 4 and the cathode metal cover plate 5 are respectively provided with corresponding cathode gas
  • the vent holes 22, 42 and 52, and the cathode gas vent holes 22, 42, and 52 are designed to be elongated.
  • the cathode gas enters from one side of the cathode gas vent hole and exits from the other side of the cathode gas vent hole.
  • the anode metal cover plate 1 and the anode metal splint 2 are sealed and bonded with sealant, the anode metal splint 2 and the cathode metal splint 4 are sealed and bonded with sealant; the cathode metal splint 4 and the cathode metal cover plate 5 are used for sealing and bonding.
  • Sealant is used for sealing and bonding; the side of the anode metal splint 2 that contacts with the cathode metal splint 4 is sprayed with a ceramic coating as an insulation.
  • This embodiment is a battery unit 100, which can be expanded to multiple battery units 100 stacked up and down according to the structure of this embodiment to form a battery stack with multiple battery units 100.
  • a flat-plate composite solid oxide fuel cell As shown in Figures 3 and 4, a flat-plate composite solid oxide fuel cell.
  • the single cell 3 consists of four, usually the same four, and the single cells 3 are tiled to form a window structure. .
  • the four single cells 3 are located on the same plane, and the two adjacent single cells 3 are not in contact.
  • the size of the anode metal cover 1, the anode metal splint 2, the cathode metal splint 4 and the cathode metal cover 5 is the same as that of the four single cells 3
  • the anode metal splint 2 and the cathode metal splint 4 are provided with four hollow structures to cooperate with the single cell 3.
  • the anode metal cover 1, the anode metal splint 2, the cathode metal splint 4 and the cathode metal cover 5 are all equipped with anodes
  • the gas vent holes 11, 21, 41, 51 and the cathode gas vent holes 22, 42 and 52 form a battery unit 200 with four single cells 3 after assembly.
  • the structure of this embodiment can be extended to a plurality of battery cells 200 stacked up and down to form a battery stack with a plurality of battery cells 200.

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  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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Abstract

一种平板式复合型固体氧化物燃料电池，包括从下往上依次设置的阳极金属盖板(1)、阳极金属夹板(2)、单电池(3)、阴极金属夹板(4)、和阴极金属盖板(5)，阳极金属夹板(2)和阴极金属夹板(4)呈中空结构，单电池(3)容纳在中空结构中通过阳极金属夹板(2)和阴极金属夹板(4)密封固定，阳极金属盖板(1)相对于单电池(3)的一侧设有供阳极气体通气的阳极气体流道(10)，阳极金属盖板(1)的另一侧是光面，阴极金属盖板(5)相对于单电池(3)的一侧设有供阴极气体通气的阴极气体流道，阴极金属盖板(5)的另一侧是光面。电池结构简单，密封性好，解决了电池串漏气的问题，提高了电池长期运行稳定性，同时有利于电池堆的集成制造。

Description

一种平板式复合型固体氧化物燃料电池 技术领域
本实用新型涉及固体氧化物燃料电池技术领域，具体涉及一种平板式复合型固体氧化物燃料电池。
背景技术
固体氧化物燃料电池(Solid Oxide Fuel Cell，SOFC)是一种高效的电化学发电装置，发电原料为天然气、氢气等燃气，具有良好的商业应用前景。
就目前而言，固体氧化物燃料电池一般分为电解质支撑电池(第一代)、阳极支撑电池(第二代)、金属基支撑电池(第三代)等。其中电解质支撑电池和阳极支撑电池都是陶瓷基体。
经查，现有专利号为201820917507.7的中国专利《一种平板式固体氧化物燃料电池堆》，包括至少一个电池单元，每一个电池单元包括至少一片单电池、上连接件、阳极集流网、阴极集流网和下连接件，相邻两电池单元上下堆叠且共用同一连接件；封接盖板和封接支撑板密封固定，上连接件、封接盖板、封接支撑板、下连接件均设有阳极进气孔和阳极出气孔。该结构通过封接盖板和封接支撑板将单电池上下封接，完善了密封结构，无需在单电池上打孔，解决了串漏气问题，提高了电池堆的长期运行稳定性和寿命；且封接盖板和封接支撑板分别设置阳极进气孔和阳极出气孔，形成外歧管通气结构，单电池本身不打通气孔，避免了单电池打孔中产生的微裂纹，避免了因微裂纹的扩展而缩短电堆的寿命。但是结构比较复杂，一个电池单元需要单电池、上连接件、阳极集流、封接盖板网、封接支撑板、阴极集流网和下连接件共七层进行密封，装配也很不方便，在结构上还需进一步改进。
发明内容
本实用新型所要解决的技术问题是针对上述的技术现状而提供一种结构简单、稳定性好的平板式复合型固体氧化物燃料电池。
本实用新型解决上述技术问题所采用的技术方案为：该复合型固体氧化物燃料电池包括从下往上依次设置的阳极金属盖板、阳极金属夹板、单电池、阴极金属夹板、和阴极金属盖板，阳极金属夹板和阴极金属夹板呈中空结构，单电池容纳在阳极金属夹板和阴极金属夹板的中空结构中通过阳极金属夹板和阴极金属夹板夹紧固定，阳极金属盖板和单电池接触的一侧设有供阳极气体通气的阳极气体流道，阳极金属盖板的另一侧是光 面，阴极金属盖板和单电池接触的一侧设有供阴极气体通气的阴极气体流道，阴极金属盖板的另一侧是光面。
作为改进，所述阳极金属盖板相对于单电池的一侧设有与阳极金属夹板的中空结构相对应的凹面，阳极气体流道布设在凹面中，阴极金属盖板相对于单电池的一侧设有与阴极金属夹板的中空结构相对应的凹面，阴极气体流道布设在凹面中。
再改进，所述阳极金属盖板的左右两侧分别设有与阳极气体流道相连通的阳极气体通气孔，阳极金属夹板、阴极金属夹板和阴极金属盖板的左右两侧分别设有对应的阳极气体通气孔，阳极气体从一侧的阳极气体通气孔进入，从另一侧阳极气体通气孔出去。
再改进，所述阴极金属盖板的左右两侧分别设有与阴极气体流道相连通的阴极气体通气孔，阳极金属盖板、阳极金属夹板和阴极金属夹板的左右外侧分别设有对应的阴极气体通气孔，阴极气体从一侧的阴极气体通气孔进入，从另一侧的阴极气体通气孔出去。
进一步，所述阳极金属盖板与阳极金属夹板之间用密封胶密封粘接，阳极金属夹板与阴极金属夹板之间用密封胶密封粘接；阴极金属夹板与阴极金属盖板之间用密封胶密封粘接。
再进一步，所述阳极金属夹板上和阴极金属夹板接触的一侧喷涂有作为绝缘的陶瓷涂层。
最后，所述单电池为一片，或者多片单电池平铺组成窗口式结构。
与现有技术相比，本实用新型的优点在于：除陶瓷电池片外，金属盖板、金属夹板也作为基本结构与陶瓷电池片集成在一起，共同组成复合型电池，单电池具有外歧管结构，可以只包含一片单电池，也可以由多片单电池平铺组成窗口式结构。本实用新型结构简单，电池密封性好，解决了电池串漏气的问题，提高了电池长期运行稳定性，同时有利于电池堆的集成制造。
附图说明
图1为本实用新型实施例1的结构示意图；
图2为图1的分解图；
图3为本实用新型实施例2的结构示意图；
图4为图3的分解图。
具体实施方式
以下结合附图实施例对本实用新型作进一步详细描述。
实施例1
如图1、2所示，一种平板式复合型固体氧化物燃料电池，该复合型固体氧化物燃 料电池的单电池3为一片，包括从下往上依次设置的阳极金属盖板1、阳极金属夹板2、单电池3、阴极金属夹板4和阴极金属盖板5，阳极金属盖板1和单电池3接触的一侧设有供阳极气体通气的阳极气体流道10，阳极金属盖板1的另一侧是光面，阴极金属盖板5和单电池3接触的一侧设有供阴极气体通气的阴极气体流道，阴极金属盖板5另一侧是光面，阳极金属夹板2和阴极金属夹板4呈中空结构，中空部分供容纳单电池3所用，单电池3容纳在阳极金属夹板2和阴极金属夹板4的中空结构中通过阳极金属夹板2和阴极金属夹板4夹紧固定。阳极金属盖板1相对于单电池3的一侧设有与阳极金属夹板2的中空结构相对应的凹面12，阳极气体流道10布设在凹面12中，阴极金属夹板5相对于单电池3的一侧设有与阴极金属夹板4的中空结构相对应的凹面，阴极气体流道布设在凹面中。单电池3为陶瓷电池片，阳极金属盖板1的左右两侧分别设有与阳极气体流道10相连通的阳极气体通气孔11，阳极金属夹板2、阴极金属夹板4和阴极金属盖板5的左右两侧分别设有对应的阳极气体通气孔21、41和51，阳极气体从阳极气体通气孔的一侧进入，从阳极气体通气孔另一侧出去。阴极金属盖板5的左右外侧分别设有与阴极气体流道相连通的阴极气体通气孔52，阳极金属夹板2、阴极金属夹板4和阴极金属盖板5的左右外侧分别设有对应的阴极气体通气孔22、42和52，阴极气体通气孔22、42、和52设计为长条形，阴极气体从阴极气体通气孔的一侧进入，从阴极气体通气孔另一侧出去。阳极金属盖板1与阳极金属夹板2之间用密封胶密封粘接，阳极金属夹板2与阴极金属夹板4之间用密封胶密封粘接；阴极金属夹板4与阴极金属盖板5之间用密封胶密封粘接；阳极金属夹板2上和阴极金属夹板4接触的一侧喷涂有作为绝缘的陶瓷涂层。
本实施例为一个电池单元100，可以按本实施例结构扩展至上下堆叠的多个电池单元100，组成具有多个电池单元100的电池堆。
实施例2
如图3、4所示，一种平板式复合型固体氧化物燃料电池，与实施例1的区别在于单电池3为四片，通常是相同的四片，单电池3平铺组成窗口式结构。四片单电池3位于同一平面、且相邻两片单电池3不接触，阳极金属盖板1、阳极金属夹板2、阴极金属夹板4和阴极金属盖板5的大小与四片单电池3相适配，阳极金属夹板2和阴极金属夹板4开有四个中空结构与单电池3配合，阳极金属盖板1、阳极金属夹板2、阴极金属夹板4和阴极金属盖板5上均设有阳极气体通气孔11、21、41、51和阴极气体通气孔22、42和52，装配后组成具有四个单电池3的电池单元200。
可以按本实施例结构扩展至上下堆叠的多个电池单元200，组成具有多个电池单元200的电池堆。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。

Claims (7)

  1. 一种平板式复合型固体氧化物燃料电池，其特征在于：该复合型固体氧化物燃料电池包括从下往上依次设置的阳极金属盖板、阳极金属夹板、单电池、阴极金属夹板、和阴极金属盖板，阳极金属夹板和阴极金属夹板呈中空结构，单电池容纳在阳极金属夹板和阴极金属夹板的中空结构中通过阳极金属夹板和阴极金属夹板夹紧固定，阳极金属盖板相对于单电池的一侧设有供阳极气体通气的阳极气体流道，阳极金属盖板的另一侧是光面，阴极金属盖板相对于单电池的一侧设有供阴极气体通气的阴极气体流道，阴极金属盖板的另一侧是光面。
  2. 根据权利要求1所述的平板式复合型固体氧化物燃料电池，其特征在于：所述阳极金属盖板相对于单电池的一侧设有与阳极金属夹板的中空结构相对应的凹面，阳极气体流道布设在凹面中，阴极金属盖板相对于单电池的一侧设有与阴极金属夹板的中空结构相对应的凹面，阴极气体流道布设在凹面中。
  3. 根据权利要求2所述的平板式复合型固体氧化物燃料电池，其特征在于：所述阳极金属盖板的左右两侧分别设有与阳极气体流道相连通的阳极气体通气孔，阳极金属夹板、阴极金属夹板和阴极金属盖板的左右两侧分别设有对应的阳极气体通气孔，阳极气体从一侧的阳极气体通气孔进入，从另一侧阳极气体通气孔出去。
  4. 根据权利要求3所述的平板式复合型固体氧化物燃料电池，其特征在于：所述阴极金属盖板的左右两侧分别设有与阴极气体流道相连通的阴极气体通气孔，阳极金属盖板、阳极金属夹板和阴极金属夹板的左右外侧分别设有对应的阴极气体通气孔，阴极气体从一侧的阴极气体通气孔进入，从另一侧的阴极气体通气孔出去。
  5. 根据权利要求1或2或3所述的平板式复合型固体氧化物燃料电池，其特征在于：所述阳极金属盖板与阳极金属夹板之间用密封胶密封粘接，阳极金属夹板与阴极金属夹板之间用密封胶密封粘接，阴极金属夹板与阴极金属盖板之间用密封胶密封粘接。
  6. 根据权利要求1或2或3所述的平板式复合型固体氧化物燃料电池，其特征在于：所述阳极金属夹板上和阴极金属夹板接触的一侧喷涂有作为绝缘的陶瓷涂层。
  7. 根据权利要求1或2或3所述的平板式复合型固体氧化物燃料电池，其特征在于：所述单电池为一片，或者多片单电池平铺组成窗口式结构。
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