Arrangement of electrochemical cells and the use of same
An electrochemical and battery technology, applied in the field of arrays of electrochemical cells
Active Publication Date: 2017-12-01
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The scalability of the external dimensions of the structure is limited by the difference between the thermal expansion of the electrolyte material and that of the metal interconnectors.
Method used
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[0025] figure 1 and figure 2 The structure of this type of repeat unit which is known and can be used in the context of the present invention is shown. An interconnector 400 is provided which has a larger area extension than a unit formed with a cathode 120 and an anode 130 between which a suitable electrolyte 110 is arranged. Formed in the region of the interconnector 400 corresponding to the cathode-electrolyte-anode assembly (CEA) is a cathode recess 410 into which the CEA can be inserted such that at least the electrolyte 110 is is resting on the interconnect material. In the region of the cathode recess 410 , the elevations and indentations form gas passages through which the oxidizing agent can reach the cathode 120 .
[0026] exist figure 1 and figure 2 In the perspective view of , in addition to the cathode recess 410 there are shown unmarked cutouts forming channels and through which oxidant (more particularly air) or fuel and / or Remove exhaust.
[0027] also...
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Abstract
The invention relates to an arrangement of electrochemical cells and the uses of same. The electrochemical cells are arranged one above the other and are connected to each other in an electrically conductive manner. In this way, the electrochemical cells form repeating units, each of which is designed with at least one interconnector in which through-openings are formed for conducting gas, an electrochemical cell, which is formed from a cathode, an electrolyte and an anode, contact elements are formed on the anode side and the cathode side, and are arranged above one another. The surface of each of the individual planar electrochemical cells is smaller than the surface of the individual interconnectors, and the electrolytes each close flush with a plane of a surface of the respective interconnector. An individual sealing layer of a glass solder comprising a constant thickness is applied to said surface of each interconnector for sealing the gap between electrolyte and interconnector (inner joint) and the gap between through-openings for conducting gas from two adjacent interconnectors (outer joint).
Description
technical field [0001] The present invention relates to arrays of electrochemical cells and their use, in particular to coupling and contacting elements of electrochemical cells which can be manufactured cost-effectively and in an automatable manner for electrolysis and and / or planar cell stacks for fuel cells, especially solid oxide fuel cells (SOFC) or solid oxide electrolysis cells (SOEC). The invention also relates to the efficient utilization of sheets made of glass for the assembly of adjacent repeating units (e.g., electrochemical cells, etc.) and for coupling electrodes and metal bimetallic cells of electrochemical cells in operation. The realization of the contact between the plates. The invention also relates to SOFC stacks for the generation of electricity and heat, and also to SOEC stacks for the efficient production of hydrogen and / or synthesis gas. Background technique [0002] Planar cell stacks for energy conversion and hydrogen production are known in the ...
Claims
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IPC IPC(8): H01M8/0276H01M8/0282C25B9/17
CPCH01M8/0276H01M8/0282H01M8/0247H01M2008/1293C25B9/00H01M8/0297H01M8/2425C25B1/04C25B9/73Y02E60/50H01M8/0286Y02E60/36H01M8/0258
Inventor 斯特凡·梅格尔卢茨·沙德特米哈伊思·库斯尼佐夫约亨·希尔莫尼古拉·特罗菲缅科
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV