Affiliation:
1. Institute of Energy and Process Systems Engineering Technische Universität Braunschweig Langer Kamp 19B 38106 Braunschweig Germany
2. Cluster of Excellence SE2A – Sustainable and Energy-Efficient Aviation Technische Universität Braunschweig 38108 Braunschweig Germany
3. Institute of Turbomachinery and Fluid Dynamics Leibniz Universität Hannover An der Universität 1 30823 Garbsen Germany
4. Battery LabFactory Braunschweig (BLB) Technische Universität Braunschweig Langer Kamp 19 38106 Braunschweig Germany
Abstract
AbstractThe porous transport layer (PTL) plays an integral role for the mass transport in polymer electrolyte membrane (PEM) electrolyzers. In this work, a stochastic reconstruction method of titanium felt‐based PTLs is applied and combined with the Lattice Boltzmann method (LBM). The aim is to parametrically investigate the impact of different PTL structures on the transport of oxygen. The structural characteristics of a reconstructed PTL agree well with experimental investigations. Moreover, the impact of PTL porosity, fiber radius, and anisotropy parameter on the structural characteristics of PTLs are analyzed, and their impact on oxygen transport are elucidated by LBM. Eventually, a customized graded PTL is reconstructed, exhibiting almost optimal mass transport performance for the removal of oxygen. The results show that a higher porosity, larger fiber radius, and smaller anisotropy parameter facilitate the formation of oxygen propagation pathways. By tailoring the fiber characteristics and thus optimizing the PTLs, guidelines for the optimal design and manufacturing can be obtained for large‐scale PTLs for electrolyzers.
Funder
China Scholarship Council
Subject
Physical and Theoretical Chemistry,Atomic and Molecular Physics, and Optics
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献