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High-temperature solid-state fuel cell stack with sealing and electron collection integrated structure and preparation method thereof

A fuel cell stack and electron collection technology, applied in fuel cell grouping, fuel cells, fuel cell components, etc., can solve the problems of cell fragmentation and sealing materials, achieve material unity, reduce material costs, and simplify preparation and assembly The effect of craftsmanship

Active Publication Date: 2018-06-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has high requirements for sealing materials; in addition, in this method, the external manufacturing process of the battery pack must be strictly controlled, usually by applying a large external pressure, but when the external pressure is too large, it is easy to cause the battery to break

Method used

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  • High-temperature solid-state fuel cell stack with sealing and electron collection integrated structure and preparation method thereof
  • High-temperature solid-state fuel cell stack with sealing and electron collection integrated structure and preparation method thereof
  • High-temperature solid-state fuel cell stack with sealing and electron collection integrated structure and preparation method thereof

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Embodiment 1

[0035] In this example, if figure 2 As shown, the high temperature fuel cell stack is composed of two single cells 7, mainly including the single cells 70, connectors and sealing materials. Each single battery 70 includes a cathode, an anode and an electrolyte, the cathode is connected to the cathode connector 60 , and the anode is connected to the anode connector 90 . The fuel flows into the anode through the fuel gas channel, and the oxidant gas flows into the cathode through the oxidizing gas channel, and then an electrochemical reaction occurs at the interface through the electrolyte to generate free electrons, forming a discharge circuit.

[0036] The surface of the cathode connecting body 60 in contact with the cathode is provided with several depressions. Relative to the concave structure, the rest of the surface of the cathode connecting body 60 in contact with the cathode forms a number of current collecting bosses 33. When the cathode connecting body 60 is in contact ...

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Abstract

The invention provides a high-temperature solid-state fuel cell stack with a sealing and electron collection integrated structure. In the cell stack, a current collection material used for electron collection between an electrode and a connector and a sealing material between a battery cell and the connector are designed to be the same material which is one of conductive Ag, Pt, Au and Pd or the alloy of two or more than two of conductive Ag, Pt, Au and Pd, or glass added with one of Ag, Pt, Au and Pd or the alloy of two or more than two of Ag, Pt, Au and Pd, so that the problems that the sealing effect and the electron collection effect are difficult to compatible caused by deformation difference between the sealing material and the current collection layer material and the two materialsare difficult for heat matching during high-temperature operation in the prior art are effectively avoided. Moreover, due to material unification, the preparation packaging technology is simplified, and the material cost is reduced.

Description

technical field [0001] The invention relates to the technical field of high-temperature solid-state fuel cells, in particular to a high-temperature solid-state fuel cell group with an integrated structure of sealing and electron collection and a preparation method thereof. Background technique [0002] High-temperature fuel cells have attracted much attention because of their high efficiency, wide range of fuel utilization, and internal reforming. At present, high-temperature fuel cells have become a commodity in the world and are being gradually promoted, such as the 100-kilowatt distributed power generation system of the US company Bloom Energy, the kilowatt-level household cogeneration system of ToTo and other companies in Japan, and Germany, Switzerland, etc. Dozens of companies in China, the United States and other countries are actively promoting its commercialization process. [0003] The core component of the high-temperature fuel cell power generation system is a b...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/0276H01M8/24
CPCH01M8/028H01M8/24Y02E60/50Y02P70/50
Inventor 王成田官万兵王建强肖国萍
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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