Results 1 to 10 of about 447,130 (281)

Effects of Compression and Porosity Gradients on Two-Phase Behavior in Gas Diffusion Layer of Proton Exchange Membrane Fuel Cells [PDF]

Membranes, 2023
Water management within the gas diffusion layer (GDL) plays an important role in the performance of the proton exchange membrane fuel cell (PEMFC) and its reliability.
Hao Wang, Guogang Yang, Qiuwan Shen, Shian Li, Fengmin Su, Ziheng Jiang, Jiadong Liao, Guoling Zhang, Juncai Sun   +8 more
doaj   +2 more sources

Effects of Electrode Support Structure on Electrode Microstructure, Transport Properties, and Gas Diffusion within the Gas Diffusion Layer [PDF]

ACS Omega, 2022
Nicholas Schwartz, Jason Harrington, Kirk J. Ziegler, Philip Cox   +3 more
doaj   +2 more sources

Tuning the Gas Separation Performances of Smectic Liquid Crystalline Polymer Membranes by Molecular Engineering

Membranes, 2022
The effect of layer spacing and halogenation on the gas separation performances of free-standing smectic LC polymer membranes is being investigated by molecular engineering.
Joey Kloos, Menno Houben, Johan Lub, Kitty Nijmeijer, Albert P. H. J. Schenning, Zandrie Borneman   +5 more
doaj   +1 more source

Ice Formation in Gas-Diffusion Layers [PDF]

ECS Transactions, 2010
Under sub-freezing conditions, ice forms in the gas-diffusion layer (GDL) of a proton exchange membrane fuel cell (PEMFC) drastically reducing cell performance. Although a number of strategies exist to prevent ice formation, there is little fundamental understanding of the mechanisms of freezing within PEMFC components.
Dursch, Thomas, Radke, Clayton J., Weber, Adam Z.   +2 more
openaire   +3 more sources

Investigating the Parameter-Driven Cathode Gas Diffusion of PEMFCs with a Piecewise Linearization Model

Energies, 2023
Improving mass transfer in gas diffusion layers is critical to achieving high-performance proton-exchange membrane fuel cells (PEMFCs). Leaks through the interface between the gas and the membrane electrode assembly frame have been widely investigated ...
Siwen Gu, Jiaan Wang, Xinmin You, Yu Zhuang   +3 more
doaj   +1 more source

Production of Gas Diffusion Layers with Tunable Characteristics

ACS Omega, 2022
Gas diffusion electrodes (GDEs) allow electrochemical reactions to occur at higher rates by enhancing the mass transport of gaseous reactants to the catalyst. These electrodes are made of two layers: the catalyst layer and the gas diffusion layer (GDL). The catalyst layer is frequently studied for gas diffusion electrodes, and the GDL is rarely a focus.
Matthew F. Philips, Gert-Jan M. Gruter, Marc T. M. Koper, Klaas Jan P. Schouten   +3 more
openaire   +5 more sources

GDL construction effects on distribution of reactants and electrical current density in PEMFC [PDF]

Journal of Heat and Mass Transfer Research, 2019
In this article, a two dimensional pore scale model of polymeric fuel cell, which is promising of a clean and renewable energy production, is presented here.
Reza Bahoosh, moosa jafari, Seyed Saied Bahrainian   +2 more
doaj   +1 more source

Collaborative Design for Uneven Physical Structures of Multi-Layers in PEMFC

World Electric Vehicle Journal, 2021
A collaborative design for the uneven distributions of a flow channel, gas diffusion layer porosity and catalyst layer porosity are newly proposed to improve the utilization ratio of the membrane electrode assembly of the proton exchange membrane fuel ...
Qinwen Yang, Shujun Chen, Gang Xiao, Lexi Li   +3 more
doaj   +1 more source

Visualization of water accumulation in micro porous layers in polymer electrolyte membrane fuel cells using synchrotron phase contrast tomography

Case Studies in Chemical and Environmental Engineering, 2022
Using phase-contracted synchrotron X-ray tomography, this study investigates the water distribution within the microporous layer (MPL) of polymer electrolyte membrane fuel cells (PEMFCs).
Saad S. Alrwashdeh, Ala'a M. Al-Falahat, Henning Markötter, Ingo Manke   +3 more
doaj   +1 more source

Exploration of operating conditions on oxygen mass transport resistance and performance of PEM fuel cells: Effects of inlet gas humidification

Electrochemical Science Advances, 2023
This work presents comprehensive studies of inlet gas humidification on O2 mass transport and proton exchange membrane fuel cell performance to obtain a better understanding of transport processes at a cathode gas diffusion electrode.
Tatyana V. Reshetenko, Bonnie L. Ben
doaj   +1 more source