Results 71 to 80 of about 28,179 (226)

Catalyst Layer Modifications for Enhanced Performance of Fluorine‐Free Proton Exchange Membrane Fuel Cells

Advanced Energy and Sustainability Research, EarlyView.
Considerable improvement in the performance of fully‐hydrocarbon‐based fuel cells is necessary to replace and compete with Per‐ and polyfluoroalkyl substances‐containing fuel cells. Herein, a way to enhance the ionic conductivity of the catalyst layer (CL) by incorporating insoluble ionomer particles into the CL is presented.
Emmanuel Balogun, Subash Rajasekar, Spencer Thomas, Ana Laura Gonçalves Biancolli, Torben Saatkamp, Franklin O. Egemole, Simon Cassegrain, Steven Holdcroft   +7 more
wiley   +1 more source

PtPd Hybrid Composite Catalysts as Cathodes for Proton Exchange Membrane Fuel Cells

Energies, 2020
In this work, PtPd hybrid cathodic catalysts were prepared for a proton exchange membrane fuel cell (PEMFC) application by two different strategies. The first strategy was the physical mixing of bimetallic PtPd onto partially reduced graphene oxide (PtPd/
Yazmín Yorely Rivera-Lugo, Kevin Isaac Pérez-Muñoz, Balter Trujillo-Navarrete, Carolina Silva-Carrillo, Edgar Alonso Reynoso-Soto, Julio Cesar Calva Yañez, Shui Wai Lin, José Roberto Flores-Hernández, Rosa María Félix-Navarro   +8 more
doaj   +1 more source

Improved Semi-empirical Model of Proton Exchange Membrane Fuel Cell Incorporating Fault Diagnostic Feature

Journal of Modern Power Systems and Clean Energy, 2021
The membrane water content of the proton exchange membrane fuel cell (PEMFC) is the most important feature required for water management of the PEMFC system. Any improper management of water in the fuel cell may lead to system faults.
Saad Saleem Khan, Hussain Shareef, Ahmad Asrul Ibrahim   +2 more
doaj   +1 more source

Multi-functional anodes boost the transient power and durability of proton exchange membrane fuel cells. [PDF]

, 2020
Proton exchange membrane fuel cells have been regarded as the most promising candidate for fuel cell vehicles and tools. Their broader adaption, however, has been impeded by cost and lifetime.
Cai, Mei, Jiao, Kui, Lemmon, John P, Li, Hexing, Li, Jinlai, Liu, Fang, Liu, Jing, Liu, Meilin, Lu, Yunfeng, Shen, Gurong, Soloveichik, Grigorii, Tongsh, Chasen, Wu, Hao Bin, Xu, Pengcheng, Zhu, Jian   +14 more
core  

Advancing Direct Alcohol Fuel Cells: Innovations in Composite‐Based Electrocatalysts and Polymer Support Materials for Enhanced Efficiency

Advanced Energy and Sustainability Research, EarlyView.
This graphical abstract emphasizes the working principle and the various essential factors of the direct methanol fuel cell (DMFCs). Additionally, various parameters, such as the nanoparticle's size and shape, the nature of the electrolyte, the type of support materials, and their fabrication process, also play essential roles in the functioning of the
Kirti Mishra, Samarjeet Singh Siwal, Phil Hart, Vijay Kumar Thakur   +3 more
wiley   +1 more source

Two-phase flow and oxygen transport in the perforated gas diffusion layer of proton exchange membrane fuel cell [PDF]

, 2019
Liquid water transport in perforated gas diffusion layers (GDLs)is numerically investigated using a three-dimensional (3D)two-phase volume of fluid (VOF)model and a stochastic reconstruction model of GDL microstructures.
Bao, Z, Jiao, K, Niu, Z, Wang, Y, Wu, J, Yin, Y   +5 more
core  

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

Advanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira, Md Mahbubur Rahman, Karib Hassan Khan, Md Nizam Uddin, Dewan Hafiz Nabil   +4 more
wiley   +1 more source

Reduced complexity models for water management and anode purge scheduling in DEA operation of PEMFCs [PDF]

, 2010
In this work, the dynamic behavior of Fuel Cell operation under Dead-Ended Anode conditions is shown. A DEA can be fed with dry hydrogen, since water crossing through the membrane is sufficient to humidify the fuel.
Siegel, Jason B., Stefanopoulou, Anna G., Yesilyurt, Serhat, Yeşilyurt, Serhat   +3 more
core   +1 more source

A Comparison of Fick and Maxwell-Stefan Diffusion Formulations in PEMFC Cathode Gas Diffusion Layers [PDF]

, 2013
This paper explores the mathematical formulations of Fick and Maxwell-Stefan diffusion in the context of polymer electrolyte membrane fuel cell cathode gas diffusion layers.
Lindstrom, Michael, Wetton, Brian
core  

Morphology of supported polymer electrolyte ultra-thin films: a numerical study

, 2015
Morphology of polymer electrolytes membranes (PEM), e.g., Nafion, inside PEM fuel cell catalyst layers has significant impact on the electrochemical activity and transport phenomena that determine cell performance.
Abraham F. F., Alejandro A. Franco, Allahyarov E., Allahyarov E., Balbuena P., Bass M., Bass M., Berendsen H. J. C., Biesheuvel P. M., Borup R., Castrillón S. R.-V., Chen W., Cheng C., Choi P., Cui S., Cui S., Daiane Damasceno Borges, Damasceno Borges D., Damasceno Borges D., Damjanovic A., de Morais R. F., Dura J. A., Eastman S. A., Eikerling M., Eikerling M. H., Elliott J. A., Elliott J. A., Franco A. A., Franco A. A., Freger V., Gasteiger H. A., Gebel G., Gebel G., Gerard Gebel, Gierke T. D., Giovambattista N., Glebov A., Hsu W. Y., Huang J., Koestner R., Kourosh Malek, Krapf D., Kreuer K. D., Kusaka I., Kusoglu A., Lamas E., Lee S. H., Li A., Li A., Litster S., Liu J., Liu J., Ma S., Malek K., Malek K., Markovic N. M., Mashio T., Masuda T., Mauritz K. A., Mehta V., Modestino M. A., Modestino M. A., More K., Nagao Y., Nijmeijer M. J. P., Paul D. K., Paul D. K., Paul D. K., Peighambardoust S. J., Quiroga M., Rinaldo S. G., Rubatat L., Scheidler P., Schmidt-Rohr K., Selvan M. E., Selvan M. E., Shi B., Spohr E., Spohr E., Stamenkovic V. R., Stefano Mossa, Subbaraman R., Subbaraman R., Tatarkhanov M., Urata S., Venkatnathan A., Vielstich W., Vishnyakov A., Vishnyakov A., Wang L., Wang Z. B., Weber A. Z., Werder T., Werder T., Wilson M., Wilson M. S., Wood D. L., Xie J., Yeager H. L., Young S. K., Zhdanov V. P., Zhdanov V. p., Zhdanov V. P.   +102 more
core   +5 more sources