Rectangular electrode/electrolyte interface based SOFC (solid oxide fuel cell) simulation method

A rectangular electrode and electrolyte technology, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve the problem of lack of clear induction on the relationship between interface tortuousness and performance, and increase the area of ​​active reaction area , battery performance improvement, and the effect of reducing activation loss

Inactive Publication Date: 2017-02-08
中博源仪征新能源科技有限公司
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Problems solved by technology

However, in those articles, only a few interface shapes were used as research objects, and the relationship between the tortuosity

Method used

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  • Rectangular electrode/electrolyte interface based SOFC (solid oxide fuel cell) simulation method
  • Rectangular electrode/electrolyte interface based SOFC (solid oxide fuel cell) simulation method
  • Rectangular electrode/electrolyte interface based SOFC (solid oxide fuel cell) simulation method

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[0042] The present invention will be further described in conjunction with the following examples, but it is not a basis for limiting the present invention.

[0043] A method for simulating the electrolyte interface of SOFC rectangular electrode includes the following steps:

[0044] S01. Model assumptions;

[0045] S02. The geometric object setting of the model;

[0046] S03. By considering the transport equations of electrons, ions and gases in the anode / electrolyte / cathode unit and electrochemical reaction kinetics, use COMSOL software to establish a two-dimensional numerical model;

[0047] S04. Compare the performance and internal physical field distribution of rectangular anode / electrolyte interface batteries and planar interface batteries with different heights, analyze the results and draw simulation conclusions.

[0048] Further, in the step S02, the geometric object of the model is set as an anode-supported solid oxide fuel cell with an electrolyte thickness of 10 μm.

[0049] F...

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Abstract

The invention discloses a rectangular electrode/electrolyte interface based SOFC (solid oxide fuel cell) simulation method. The method comprises the following steps: S01. assuming a model; S02. setting geometric objects of the model; S03. building a two-dimensional numerical model by utilizing COMSOL software through consideration of transmission equations of electrons, ions and gases in anode/electrolyte/cathode units and electrochemical reaction kinetics; S04. comparing the performances and distribution of internal physical fields of cells with rectangular anode/electrolyte interfaces in different gaps and cells with plane interfaces, analyzing the results and drawing stimulation conclusions. The method has the beneficial effects that the anode-supported SOFCs with electrolyte thickness of 10mu m are taken as the objects of study, the model is built by using COMSOL through consideration of the transmission equations of electrons, ions and gases in the anode/electrolyte/cathode units and electrochemical reaction kinetics, the current-voltage curve of the monocell with a rectangular interface with gap thickness of 100mu m is obviously better than the current-voltage curves of the cells with plane interfaces, and the maximum power density of the monocell can be increased to 48%.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a simulation method for an SOFC rectangular electrode electrolyte interface. Background technique [0002] A solid oxide fuel cell (Solid Oxide Fuel Cell, or SOFC) is a fuel cell with a completely solid-state structure that operates in a high-temperature environment, and it is also one of the five currently recognized fuel cells. Compared with other current energy generating devices, it has the following significant advantages: (1) SOFC operating temperature can reach up to 1000°C, and the system itself has high energy conversion efficiency. If heat recovery technology is used for combined heat and power generation, in such a system, its total efficiency can reach 70%-80%, which is the highest among all power generation technologies. (2) SOFC has strong fuel flexibility. It can use the internal reforming reaction of hydrocarbons inside the battery (a series of complex chem...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李箭蒲健申景泉
Owner 中博源仪征新能源科技有限公司
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