Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging
M Siegwart, R Woracek, JI Marquez Damian… - Review of Scientific …, 2019 - pubs.aip.org
We report on measured neutron cross section data for super-cooled water and ice by time-of-
flight (TOF) neutron transmission imaging. In particular, we demonstrate the use of high duty …
flight (TOF) neutron transmission imaging. In particular, we demonstrate the use of high duty …
[HTML][HTML] Analysis of the failure modes in the polymer electrolyte fuel cell cold-start process—anode dehydration or cathode pore blockage
L Yao, F Ma, J Peng, J Zhang, Y Zhang, J Shi - Energies, 2020 - mdpi.com
In this study, the cold-start failure processes of a polymer electrolyte fuel cell have been
investigated numerically for different initial membrane water content λ 0 and the startup …
investigated numerically for different initial membrane water content λ 0 and the startup …
Cold start optimization of the proton-exchange membrane fuel cell by penetrating holes in the cathode micro-diffusion layer
P Wang, L Li - International Journal of Hydrogen Energy, 2022 - Elsevier
Enhancing the cold start ability of proton-exchange membrane fuel cells (PEMFCs) can
widely apply fuel cells in a cold environment. In this study, PEMFC cold start performance …
widely apply fuel cells in a cold environment. In this study, PEMFC cold start performance …
Fast X‐ray Tomographic Microscopy: Investigating Mechanisms of Performance Drop during Freeze Starts of Polymer Electrolyte Fuel Cells
I Mayrhuber, F Marone, M Stampanoni… - …, 2015 - Wiley Online Library
The success of a freeze start of a polymer electrolyte fuel cell depends on the state and
spatial distribution of the water produced in the porous structures of the membrane electrode …
spatial distribution of the water produced in the porous structures of the membrane electrode …
Durability of polymer electrolyte membrane fuel cells operated at subfreezing temperatures
N Macauley, RW Lujan, D Spernjak… - Journal of The …, 2016 - iopscience.iop.org
The structure, composition, and interfaces of membrane electrode assemblies (MEA) and
gas-diffusion layers (GDLs) have a significant effect on the performance of single-proton …
gas-diffusion layers (GDLs) have a significant effect on the performance of single-proton …
Statistical analysis of isothermal cold starts of PEFCs: Impact of gas diffusion layer properties
J Biesdorf, A Forner-Cuenca, M Siegwart… - Journal of The …, 2016 - iopscience.iop.org
In this paper, we present experimental results about the influence of a hydrophobic coating
of gas diffusion layers (GDL) and the existence of a micro porous layer (MPL) on the cold …
of gas diffusion layers (GDL) and the existence of a micro porous layer (MPL) on the cold …
An investigation of PEFC sub-zero startup: Evidence of local freezing effects
P Stahl, J Biesdorf, P Boillat… - Journal of The …, 2016 - iopscience.iop.org
Starting PEFCs from sub-zero temperatures can be challenging as generated product water
runs the risk to freeze, causing cell failure by blocking the gas pathways for the reactant …
runs the risk to freeze, causing cell failure by blocking the gas pathways for the reactant …
Subzero water distribution in proton exchange membrane fuel cells: Effects of preconditioning method
AO Pistono, CA Rice - International Journal of Hydrogen Energy, 2019 - Elsevier
Automotive subzero cold-starts are challenging for proton exchange membrane fuel cells
(PEMFCs) and depend on material structure and initial water content (λ initial). PEMFC cold …
(PEMFCs) and depend on material structure and initial water content (λ initial). PEMFC cold …
Subzero automotive fuel cells: Water fill tests vs cold-starts
CA Rice - Journal of the Electrochemical Society, 2021 - iopscience.iop.org
Subzero cold-starts are one of the last remaining challenges to the commercialization of
automotive fuel cells. The ultimate cold-start target is to exothermically self-start a fuel cell …
automotive fuel cells. The ultimate cold-start target is to exothermically self-start a fuel cell …
[HTML][HTML] Numerical Simulation of the Cold-Start Process of Polymer Electrolyte Fuel Cell
Y Chen, S Li, J Peng, W Zhuge, Y Zhang - Energies, 2023 - mdpi.com
In this study, the cold-start process of a polymer electrolyte fuel cell has been numerically
investigated under various ambient temperatures and operating currents, ranging from …
investigated under various ambient temperatures and operating currents, ranging from …