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Current collector

A current collector and gas channel technology, applied in the field of electrochemical devices, can solve the problem of low gas diffusion flux, and achieve the effects of increasing gas diffusion flux, reducing diffusion resistance, and improving uniformity

Active Publication Date: 2022-04-22
INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the gas diffusion flux of the current collector is low

Method used

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased from the market.

[0034] In addition, the meaning of "and / or" appearing in the whole text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, scheme B, or schemes that both A and B satisfy. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contr...

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Abstract

The invention discloses a current collector, and relates to the technical field of electrochemical devices, the current collector comprises a first diffusion layer, a second diffusion layer, a third diffusion layer and a surface protection layer which are sequentially stacked from bottom to top, the first diffusion layer and the third diffusion layer are made of a porous material, and the surface protection layer is made of a porous material. The second diffusion layer comprises a plurality of conductive vitex strips which are arranged at intervals, so that gas channels are formed among the conductive vitex strips. The current collector is provided with the open type gas diffusion channel, so that the gas diffusion flux can be increased, the diffusion resistance of gas such as fuel or air in an electric pile can be reduced, and the distribution uniformity of the gas such as fuel or air on the surface of an electrode can be improved. According to the current collector provided by the invention, an open type gas diffusion channel is formed through the first diffusion layer, the second diffusion layer and the third diffusion layer, and the current collector has high gas diffusion flux.

Description

technical field [0001] The invention relates to the technical field of electrochemical devices, in particular to a collector material. Background technique [0002] A solid oxide cell (SOC) is an electrochemical device with an oxygen ion or proton conductive oxide as the electrolyte membrane. It can operate in fuel cell mode and convert fuels such as hydrogen and syngas into electricity and heat efficiently and cleanly. It can also operate in electrolysis mode, converting water / carbon dioxide into hydrogen / carbon monoxide, thereby converting excess electricity into chemical energy. The SOC single cell is composed of a dense electrolyte and a porous air electrode (or positive electrode) and a porous fuel electrode (or negative electrode) on both sides. In order to meet the high power requirements in practical applications, it is necessary to combine the single The fuel electrode collector, the air electrode collector, and the connecting body are connected in series through t...

Claims

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Application Information

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IPC IPC(8): H01M4/64H01M4/86H01M4/88
CPCH01M4/8807H01M4/86H01M4/64Y02E60/10Y02E60/50
Inventor 占忠亮仝永成陈初升
Owner INST OF ADVANCED TECH UNIV OF SCI & TECH OF CHINA
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