Results 21 to 30 of about 40,458 (261)

Pt nanorods supported on Nb-doped ceria: A promising anode catalyst for polymer electrolyte fuel cells

Electrochemistry Communications
For polymer electrolyte fuel cells (PEFCs), platinum nanoparticles supported on carbon black (Pt/C) serve as the commonly used hydrogen anode catalyst, exhibiting high activity for the hydrogen oxidation reaction (HOR), while the carbon support is ...
Guoyu Shi, Tetsuro Tano, Donald A. Tryk, Akihiro Iiyama, Makoto Uchida, Katsuyoshi Kakinuma   +5 more
doaj   +1 more source

Control-oriented modeling and exploration of hygrothermal characteristics of air-cooled proton exchange membrane fuel cell

Energy Reports, 2022
Achieving high output performance of air-cooled proton exchange membrane fuel cells relies on appropriate temperature and water content management. However, the open-cathode structure of the fuel cell stack leads to the coupling of thermal-water controls
Wengang Zhang, Yan Gao, Jie Mei, Renkang Wang   +3 more
doaj   +1 more source

Development of a novel electroless deposited nickel braze for micro-tubular solid oxide fuel cell current collector contacting

Journal of Advanced Joining Processes, 2021
A brazing process for the fuel electrode (anode) contacting of a micro-tubular fuel cell is reported. The low-cost, novel, electroless deposited braze suitable for mass production was optimised with respect to material loading and brazing environment ...
O. Hodjati-Pugh, A. Dhir, R. Steinberger-Wilckens   +2 more
doaj   +1 more source

Fuel cells and hydrogen economy

Chemical Industry and Chemical Engineering Quarterly, 2005
Fuel cells with applications ranging from power generation to transportation need hydrogen as fuel. Hydrogen is not a source of energy, and hydrogen is not a readily available fuel. Hydrogen is more like electricity - an intermediary form of energy or an energy carrier.
openaire   +3 more sources

Experimental Study on the Effect of Carbon Graphitization Degree and Pore Structure on the Electrochemical Durability of Gas Diffusion Layers

Energies, 2023
Gas diffusion layers (GDLs) in high-temperature, high-humidity, and high-electric-potential environments can be affected by the carbon corrosion and degradation of Polytetrafluoroethylene (PTFE) network structures, resulting in reduced reliability and ...
Jianan Wang, Lingfeng Gao, Tianshu Liao, Feng Cheng, Daming Zhou, Shiyang Hua   +5 more
doaj   +1 more source

Experimental Study on OC PEMFC Performance Improvement and MEA Parameter Optimization Under Water Shortage Conditions

Membranes
Optimizing the MEA structure is crucial for enhancing the performance of open-cathode PEMFCs under water shortage conditions. By investigating the impact of gradient ambient temperature on performance, it is highlighted that cathode catalyst layer ...
Jianan Wang, Di Tang, Tianshu Liao, Xiangqian Zhang, Feng Cheng, Lingfeng Gao   +5 more
doaj   +1 more source

Analysis of Ice Formation during Start-Up of PEM Fuel Cells at Subzero Temperatures Using Experimental and Simulative Methods

Energies, 2023
Freeze start is a challenge in the commercialization of PEM fuel cells. In this study, ice formation in cell layers is investigated through experiments and simulations.
Maximilian Schmitz, Matthias Bahr, Sönke Gößling, Stefan Pischinger   +3 more
doaj   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Surface Modification of Glassy Carbon Electrode by Ni-Cu Nanoparticles as a Competitive Electrode for Ethanol Electro-Oxidation [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2018
In the present study, Nickel-Copper nanoparticles were electrodeposited on glassy carbon electrode (GCE) by using electroplating deposition method. The prepared electrode was characterized by scanning electron microscopy (SEM) and elemental mapping ...
Abolfath Eshghi, Mehdi Kheirmand
doaj  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source