Results 21 to 30 of about 390,184 (317)

Electricity powering combustion: hydrogen engines [PDF]

, 2012
Hydrogen is ameans to chemically store energy. It can be used to buffer energy in a society increasingly relying on renewable but intermittent energy or as an energy vector for sustainable transportation.
Boyer, Brad, Eichlseder, Helmut, Gerbig, Falk, Naganuma, Kaname, Tanno, Shiro, Verhelst, Sebastian, Wallner, Thomas   +6 more
core   +1 more source

Evaluation of the Microstructure and the Electrochemical Properties of Ce_0.8(1−x)Gd_0.2(1−x)Cu_xO_{[1.9(1−x)+x]} Electrolytes for IT-SOFCs

Applied Sciences, 2020
The influence of copper addition (0.5–2 mol%) on the crystal structure, densification microstructure, and electrochemical properties of Ce0.8Gd0.2O1.9 synthesized in a one-step sol–gel combustion synthesis route has been studied.
Grazia Accardo, Jae Kwan Bae, Sung Pil Yoon   +2 more
doaj   +1 more source

Three Methods for Application of Data from a Volumetric Method to the Kissinger Equation to Obtain Activation Energy

Micromachines, 2022
Thermal analysis methods have been used in many reports to determine the activation energy for hydride decomposition (dehydrogenation). In our preceding work, we showed that the dehydrogenation rate of Mg-5Ni samples obeyed the first-order law, and the ...
Myoung Youp Song, Young Jun Kwak
doaj   +1 more source

Effect of dopamine modification on the oxygen reduction reaction activity of Pt/C catalyst

Electrochemistry Communications
Modifying Pt-based catalysts with organic molecules offers a promising strategy to enhance oxygen reduction reaction (ORR) performance. In this study, dopamine (DA) was used to modify Pt/C, and its impact on electrochemical behavior and ORR activity was ...
Guoyu Shi, Donald A. Tryk, Akihiro Iiyama, Makoto Uchida, Hironori Osada, 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

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

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

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