Study on Diffusion Performance of Cathode Diffusion Layer of Fuel Cell

被引：0

作者：

Chen, Kaiyuan ^{[1
]}

Chen, Lei ^{[1
]}

Tao, Wenquan ^{[1
]}

机构：

[1] Xi’an Jiaotong University, Key Laboratory of Thermo-Fluid Science & Engineering, Xi’an,710049, China

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2023年 / 44卷 / 07期

关键词：

Carbon nanotubes - Defects - Diffusion in gases - Fuel cells - Gases;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper, the diffusion characteristics of the cathode diffusion layer of fuel cell are studied by coarse-grained(CG) molecular dynamics method. The accuracy of the coarse-grained method was verified by the calculation results of the all-atom method, and a quantitative correction scheme was proposed. The diffusion characteristics of gas and water in the gas diffusion layer of carbon nanotubes are analyzed. The diffusion of gas and water is anisotropic. The axial diffusion coefficients of gas and water in carbon nanotubes are lower than radial one, and the coefficient of each molecular also decrease with the decrease of the ratio of that kind of molecular. The study of the gas diffusion layer with defects shows that the morphology of defects in the gas diffusion layer has a significant effect on its diffusion performance. © 2023 Science Press. All rights reserved.

引用

页码：1866 / 1872