Results 51 to 60 of about 18,542 (224)

Optimization of Tapering Angle of Flow Channels of Pemfuel Cell: A Numerical Study [PDF]

Renewable Energy Research and Applications
Proton Exchange Membrane fuel cells (PEMFCs) are essential for the efficient operation of hydrogen-powered automobiles. To improve their performance, researchers have proposed tapered flow channels as a possible solution. However, determining the optimal
Amarnath Gundalabhagavan, Veeresh Babu Alur, Kshitij Bhosale   +2 more
doaj   +1 more source

Extracting Unknown Parameters of Proton Exchange Membrane Fuel Cells Using Quantum Encoded Pathfinder Algorithm

Frontiers in Energy Research, 2022
Proton exchange membrane fuel cell (PEMFC) is one of the most widely used fuel cell types. Accurate modeling of PEMFC can better facilitate the research of PEMFC and guide designers to design FC products that meet people’s needs.
Ning Li, Ning Li, Guo Zhou, Yongquan Zhou, Yongquan Zhou, Yongquan Zhou, Wu Deng, Qifang Luo, Qifang Luo   +8 more
doaj   +1 more source

Forced Air‐Breathing PEMFC Stacks [PDF]

International Journal of Electrochemistry, 2012
Air‐breathing fuel cells have a great potential as power sources for various electronic devices. They differ from conventional fuel cells in which the cells take up oxygen from ambient air by active or passive methods. The air flow occurs through the channels due to concentration and temperature gradient between the cell and the ambient conditions ...
K. S. Dhathathreyan, N. Rajalakshmi, K. Jayakumar, S. Pandian   +3 more
openaire   +2 more sources

From Top to Bottom: Manufacturing Process‐Context Aware Resolution of Energy Device Electrodes Through a 3D Diffusion Generative Model

Advanced Energy Materials, EarlyView.
The application of a generative diffusion model, enhanced with a training data augmentation pipeline retaining the manufacturing process context of electrode microstructures, leads to improved fidelity of the through‐plane tortuosity factor in the AI generated samples.
Victor Ramirez‐Camacho, Siwar Ben Hadj Ali, Maxence Desnoyers, Francisco Fernandez, Nassima Benammar, Alejandro A. Franco   +5 more
wiley   +1 more source

Multifunctional Matrix‐Activated Electrodes Enabling Efficient Proton Transport and Durable Low‐Pt Operation for High‐Temperature Proton Exchange Membrane Fuel Cells

Advanced Energy Materials, EarlyView.
This work introduces a CeHP‐enabled multifunctional matrix‐activated electrode (MME) for high‐temperature PEM fuel cells, forming an electrochemically and mechanically functional matrix within the catalyst layer. The design increases peak power density by 38% and reduces voltage decay by 62% at 240 °C, while using only 40% of the Pt loading of a ...
Gyeongseok Gwak, Sunjin Park, Joonbyum Kim, Hena Lee, Jihyeon Ok, Chae Young Lee, JunHwa Kwon, Jong Geun Seong, Sung Pil Yoon, Suk‐Woo Nam, Hansung Kim, Katie Heeyum Lim, So Young Lee   +12 more
wiley   +1 more source

New Proton Conductive Heteroaromatic Bisphosphonic acid-Nafion Membranes for PEMFC [PDF]

, 2019
The integration of new cleaner, renewable and environment-friendly sources and energy vectors for sustainable energy systems are a key challenge for 21st century society.
Sá, Ana I. de, Teixeira, A. P. S., Sá, A.I. De, Teixeira, António P. S., Rangel, C. M., Teixeira, Fatima, Teixeira, Fátima C., Sá, A. I. Correia de   +7 more
core  

The effects of water and microstructure on the performance of polymer electrolyte fuel cells [PDF]

, 2006
n this paper, we present a comprehensive non-isothermal, one-dimensional model of the cathode side of a Polymer Electrolyte Fuel Cell. We explicitly include the catalyst layer, gas diffusion layer and the membrane.
Shah, A., Promislow, K., Young, A., Yi, S., Gervais, W., Li, J., Kim, G.S.   +6 more
core   +1 more source

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

Carbon Energy, EarlyView.
ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar, Seul‐Yi Lee, Roop L. Mahajan, Soo‐Jin Park   +3 more
wiley   +1 more source

Numerical analysis of the effect of configuration of flow channels on current distribution in high temperature proton exchange fuel cells

Revue des Énergies Renouvelables
In this study, the steady-state effects of bipolar plate flow-channel configuration in high-temperature proton exchange membrane fuel cells (HT-PEMFCs) are investigated using the COMSOL® Multiphysics software.
Mehmet Turgay Pamuk
doaj   +1 more source

PEMFC Fault Diagnosis, Modeling, and Mitigation [PDF]

IEEE Transactions on Industry Applications, 2008
This paper introduces fault diagnosis and separation, mitigation, and modeling of a proton exchange membrane fuel cell (PEMFC). Experimental tests of a single PEMFC were performed during this study. Flooding and drying faults were implemented to be detected from the cell voltage and impedance response of the cell.
Abraham Gebregergis, Pragasen Pillay, Raghunathan Rengaswamy   +2 more
openaire   +3 more sources