Results 231 to 240 of about 86,200 (263)

Diffusion Boundary Layer in a Weakly Ionized Gas

Journal of the Physical Society of Japan, 1974
The ambipolar diffusion boundary layer induced in a thermally ionized high pressure gas is analyzed theoretically with the isothermal assumption. The thickness of the boundary layer and the density and potential profiles are calculated analytically.
openaire   +1 more source

Gas Diffusion Layer with Multiscale Roughness Structure for Enhanced Durability of Gas Diffusion Electrode

Advanced Functional Materials
ABSTRACT Although current gas diffusion electrodes (GDE) meet many performance requirements for the electrocatalytic reduction of carbon dioxide (ECO 2 RR) in aqueous media, most designs focus primarily on the catalytic layer, with limited attention to the durability of the ...
Haoling Yang, Kunyu Xu, Qi Zhang, Shuang Yang, Bihe Jiang, Shuilong Dong, Hao Peng, Zihao Yang, Zhaoxia Dong   +8 more
openaire   +1 more source

Gas Diffusivity of PEM Fuel Cells Gas Diffusion Layer: Experimental Measurement and Modeling

ECS Meeting Abstracts
The rate of gas transport through the PEMFC gas diffusion layers (GDL) is a function of GDL morphology, such as thickness, porosity, fibre diameters, tortuosity, etc.. Numerical methods can capture the intricacies of the GDL pore structure. However, the results obtained are specific to the analyzed structure and cannot be generalized to other GDLs ...
Amin Mohammadi, Majid Bahrami, Claire McCague, Esmaeil Navaei Alvar, Kim Pascal   +4 more
openaire   +1 more source

Evaporation of Water from Gas Diffusion Layers

ECS Meeting Abstracts, 2017
Evaporation of water from gas diffusion layers (GDL) is an important process for water management in polymer electrolyte fuel cells. At temperatures around 80 °C and locally under-saturated conditions, evaporation can have a significant impact on the GDL saturation.  However, little is known about the evaporation rates of water in gas
Felix N Büchi, Sreeyuth Lal, Adrien Lamibrac   +2 more
openaire   +1 more source

Durability Aspects of Gas-Diffusion and Microporous Layers

2009
The polymer electrolyte fuel cell (PEFC) gas-diffusion layer (GDL) is the critical bridging component between the bipolar plate flow-field and elec-trocatalyst layer. It must participate in all mass-transport processes of a PEFC. These consist primarily of reactant transport and liquid-water handling – either excess water removal to prevent catalyst ...
David L. Wood, Rodney L. Borup
openaire   +1 more source

Hydrophobicity Graded Gas Diffusion Layer for Stable Electrochemical Reduction of CO2

Angewandte Chemie - International Edition, 2022
Linbo Li, Alan M Bond, Qinfen Gu
exaly  

Compressive stress and its impact on the gas diffusion layer: A review

International Journal of Hydrogen Energy, 2022
Cong Feng, Pingwen Ming, Fumin Tang
exaly  

Optimization of gas diffusion layer in high temperature PEMFC with the focuses on thickness and porosity

Applied Energy, 2021
Lingchao Xia, Meng Ni, Qijiao He
exaly  

Power evolution of fuel cell stack driven by anode gas diffusion layer degradation

Applied Energy, 2022
Yange Yang, Fumin Tang, Pingwen Ming
exaly  

Failure of cathode gas diffusion layer in 1 kW fuel cell stack under new European driving cycle

Applied Energy, 2021
Yange Yang, Xiangyang Zhou, Cunman Zhang   +2 more
exaly