Microstructure Reconstruction and Multiphysics Dynamic Distribution Simulation of the Catalyst Layer in PEMFC
文献类型：期刊论文
| 作者 | Zhan, Zhigang1,2,4; Song, Hao4; Yang, Xiaoxiang4; Jiang, Panxing1,2,4; Chen, Rui1,2,4; Harandi, Hesam Bazargan3; Zhang, Heng2,4; Pan, Mu4 |
| 刊名 | MEMBRANES
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 12期号:10页码:- |
| 关键词 | proton exchange membrane fuel cell catalyst layer microstructure nano-ct reconstruction heat and mass transport electrochemical reaction proton conduction dynamic processes |
| 英文摘要 | Due to the complexity of both material composition and the structure of the catalyst layer (CL) used in the proton-exchange membrane fuel cell (PEMFC), conjugated heat and mass transfer as well as electrochemical processes simultaneously occur through the CL. In this study, a microstructure model of CL was first reconstructed using images acquired by Nano-computed tomography (Nano-CT) of a real sample of CL. Then, the multiphysics dynamic distribution (MPDD) simulation, which is inherently a multiscale approach made of a combination of pore-scale and homogeneous models, was conducted on the reconstructed microstructure model to compute the corresponded heat and mass transport, electrochemical reactions, and water phase-change processes. Considering a computational domain with the size of 4 um and cube shape, this model consisting of mass and heat transport as well as electrochemical reactions reached a stable solution within 3 s as the convergence time. In the presence of sufficient oxygen, proton conduction was identified as the dominant factor determining the strength of the electrochemical reaction. Additionally, it was concluded that current density, temperature, and the distribution of water all exhibit similar distribution trends, which decrease from the interface between CL and the proton-exchange membrane to the interface between CL and the gas-diffusion layer. The present study not only provides an in-depth understanding of the mass and heat transport and electrochemical reaction in the CL microstructure, but it also guides the optimal design and fabrication of CL components and structures, such as improving the local structure to reduce the number of dead pores and large agglomerates, etc. |
| 学科主题 | Biochemistry & Molecular Biology ; Chemistry ; Engineering ; Materials Science ; Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000873104500001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35270]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China 2.Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan 528200, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 4.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
| 推荐引用方式 GB/T 7714 | Zhan, Zhigang,Song, Hao,Yang, Xiaoxiang,et al. Microstructure Reconstruction and Multiphysics Dynamic Distribution Simulation of the Catalyst Layer in PEMFC[J]. MEMBRANES,2022,12(10):-. |
| APA | Zhan, Zhigang.,Song, Hao.,Yang, Xiaoxiang.,Jiang, Panxing.,Chen, Rui.,...&Pan, Mu.(2022).Microstructure Reconstruction and Multiphysics Dynamic Distribution Simulation of the Catalyst Layer in PEMFC.MEMBRANES,12(10),-. |
| MLA | Zhan, Zhigang,et al."Microstructure Reconstruction and Multiphysics Dynamic Distribution Simulation of the Catalyst Layer in PEMFC".MEMBRANES 12.10(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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