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Simulation method for preparation process of proton exchange membrane fuel cell catalyst slurry

A proton exchange membrane and catalyst slurry technology, applied in design optimization/simulation, electrical digital data processing, CAD numerical modeling, etc., can solve the problem that the field of catalyst slurry cannot be expanded, and achieve the effect of flexible post-processing methods

Active Publication Date: 2021-10-15
TONGJI UNIV
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  • Description
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  • Application Information

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Problems solved by technology

However, this patent cannot be expanded in the field of catalyst slurry

Method used

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  • Simulation method for preparation process of proton exchange membrane fuel cell catalyst slurry
  • Simulation method for preparation process of proton exchange membrane fuel cell catalyst slurry
  • Simulation method for preparation process of proton exchange membrane fuel cell catalyst slurry

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Embodiment

[0052] A simulation method for the preparation process of proton exchange membrane fuel cell catalyst slurry, comprising the following steps:

[0053] S1: Assuming that the slurry solvent is an incompressible fluid under external forces, the flow field is simulated using the single-relaxation lattice Boltzmann method (LBGK);

[0054] S2: Simplify the catalyst particle as a rigid sphere, and use the Lagrangian trajectory method to establish its dynamic model;

[0055] S3: Complete the conversion of actual physical parameters into dimensionless numbers under the simulation system;

[0056] S4: Design boundary conditions and apply external effects in the two-dimensional calculation area;

[0057] S5: Complete the initialization of the flow field and particles in the calculation area;

[0058] S6: Iterative calculation, calculating the equilibrium distribution function, and updating the state of the flow field;

[0059] S7: Calculate the force of the particles according to the ...

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Abstract

The invention relates to a simulation method for a preparation process of proton exchange membrane fuel cell catalyst slurry. The method comprises the steps of simulating a slurry solvent flow field by using a single relaxation lattice Boltzmann method; establishing a kinetic model of catalyst particles by using a Lagrange trajectory method; carrying out dimensionless number conversion in a simulation system; designing boundary conditions in a two-dimensional calculation area and applying external action; initializing the flow field and particles in the calculation area; carrying out iterative calculation, calculating a balance distribution function, and updating the flow field state; calculating the stress of the particles according to the flow field state, and updating the particle state; performing particle overflow treatment; calculating whether the flow field reaches error precision e according to an error function; and outputting a calculation data result, performing data post-processing, and evaluating the stability of the catalyst slurry according to a data post-processing result. Compared with the prior art, the method has the advantages that the interaction mechanism of multiple components in the catalyst slurry is discussed from the angle of modeling simulation, and guidance significance is provided for preparing the catalyst slurry with better performance.

Description

technical field [0001] The invention belongs to the technical field of preparation of proton exchange membrane fuel cell catalyst slurry, and relates to a simulation method for the preparation process of proton exchange membrane fuel cell catalyst slurry. Background technique [0002] The proton exchange membrane fuel cell is a device based on the electrochemical action of hydrogen and oxygen, in which the core component is the catalytic layer, and the quality of the catalytic layer has a great influence on the performance of the fuel cell. The catalytic layer is prepared from catalyst slurry, which is a very complex colloidal system, generally composed of catalyst / carrier, dispersion medium and ionomer fully mixed. The interaction relationship between the components in the ink system has a direct relationship with the catalyst dispersion, cluster formation, ionomer adsorption and other behaviors. Therefore, how to efficiently prepare fuel cell catalytic layers with excelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/25G06F111/10G06F119/14
CPCG06F30/25G06F2111/10G06F2119/14Y02E60/50
Inventor 李冰丁志强明平文杨代军张存满
Owner TONGJI UNIV
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