Single gas cell solid oxide fuel cell of electrolyte-supporting type

A technology of solid oxide and fuel cells, which is applied in the direction of solid electrolyte fuel cells, fuel cells, fuel cell components, etc. It can solve the problems of poor battery output performance and large electrolyte ohmic impedance, so as to improve output performance and reduce ohmic resistance. Impedance, the effect of enlarging the path area

Inactive Publication Date: 2009-09-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electrolyte-supported single-chamber solid oxide fuel cell to solve the problem that the electrolyte ohmic impedance of the existing single-chamber solid fuel fuel cell is large, resulting in poor output performance of the battery

Method used

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  • Single gas cell solid oxide fuel cell of electrolyte-supporting type
  • Single gas cell solid oxide fuel cell of electrolyte-supporting type
  • Single gas cell solid oxide fuel cell of electrolyte-supporting type

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 and figure 2 This embodiment is described. This embodiment is composed of a first electrolyte support 1, an anode slurry 2 and a cathode slurry 3. The surface of the first electrolyte support 1 is provided with at least one anode groove 1-1 and at least one The cathode groove 1-2, the anode groove 1-1 is coated with the anode slurry 2, and the cathode groove 1-2 is coated with the cathode slurry 3. The anode groove 1-1 and the cathode groove 1-2 make the anode slurry 2 and the cathode slurry 3 flow along the groove wall, and the groove wall expands the current flow path and reduces the ohmic impedance of the electrolyte. The realization process of the present invention is as follows: 1. Design the mold according to the external shape of the first electrolyte support body 1, put the electrolyte powder into the mold, and press the electrolyte powder into a green body under a pressure of 10-2000Mpa; 2. Use a carving knif...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 , image 3 and Figure 4 To illustrate this embodiment, the cross-sections of the anode groove 1-1 and the cathode groove 1-2 on the first electrolyte support body 1 of this embodiment are square, trapezoidal or arc-shaped. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 , image 3 , Figure 4 and Figure 5 To illustrate this embodiment, the longitudinal section of the first electrolyte support 1 in this embodiment is square, rectangular or circular, and the longitudinal section of the first electrolyte support 1 is the same as the anode groove 1-1 or the cathode groove 1 -2 Sections with consistent cross-sectional orientation. This design can meet the needs of batteries with different structures. Others are the same as in the first embodiment.

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Abstract

The invention relates to a single gas cell solid oxide fuel cell, in particular to a single gas cell solid oxide fuel cell of an electrolyte-supporting type, solving the problems that an electrolyte of the prior single gas cell solid oxide fuel cell has great ohmic resistance to cause the poor output performance of the cell. The invention adopts the first technical scheme that the surface of a first electrolyte-supporting body is provided with at least one anode groove and at least one cathode groove, the interior of the anode groove is coated with anode slurry, and the interior of the cathode groove is coated with cathode slurry. The invention adopts the second technical scheme that the surface of a second electrolyte-supporting body is provided with at least one lug boss, and both sides of the lug boss are respectively coated with the anode slurry and the cathode slurry. The single gas cell solid oxide fuel cell of an electrolyte-supporting type changes a single path for a current between electrodes of a traditional single-side cell to only flow on the surface layer of the electrolyte-supporting body, enables the current to flow by a groove wall between the grooves and enlarges the path area for the current to pass so as to reduce the ohmic resistance of the electrolyte and improve the output performance of the cell.

Description

technical field [0001] The invention relates to a single gas chamber solid oxide fuel cell. Background technique [0002] An important structure in the existing single-chamber solid fuel fuel cell is that the electrodes are distributed on one side of the same side of the electrolyte. The ohmic impedance of the electrolyte of this structure battery accounts for a large proportion of the battery impedance, which greatly affects battery output performance. In order to reduce the ohmic loss, the distance between the two electrodes is usually reduced to reduce the ohmic loss caused by the electrolyte. However, for a single-sided battery with this structure, the distance between the electrodes is difficult to reach the micron level, because reducing the distance between the electrodes will increase the chance of short circuit on the one hand; Selective catalysis reduces the open circuit voltage of the battery. Contents of the invention [0003] The object of the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/12H01M8/02H01M4/86H01M8/1213
CPCY02E60/521Y02E60/525Y02E60/50
Inventor 王志红吕喆黄喜强陈孔发魏波朱星宝潘伟平苏文辉
Owner HARBIN INST OF TECH
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