Results 81 to 90 of about 11,919,933 (393)

Efficient amine-assisted CO2 hydrogenation to methanol co-catalyzed by metallic and oxidized sites within ruthenium clusters

open access: yesNature Communications
Amine-assisted two-step CO2 hydrogenation is an efficient route for methanol production. To maximize the overall catalytic performance, both the N-formylation of amine with CO2 (i.e., first step) and the subsequent amide hydrogenation (i.e., second step)
Desheng Su   +10 more
doaj   +1 more source

Electricity biogeneration using microbial fuel cells approach [PDF]

open access: yes, 2020
Renewable energies are very important because they released clean gasses to the atmosphere. Hence, polluted air and water can be prevented by using renewable energy sources to generate power.
Razali, Halimatus Saadiah   +3 more
core  

In Situ Formation of a Melt‐Solid Interface Toward Stable Oxygen Reduction in Protonic Ceramic Fuel Cells

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng   +14 more
wiley   +1 more source

Fuel cells : state of the art [PDF]

open access: yes, 2009
Publication CIMNEThis report pretends to explain the state of the art of fuel cells and the applications focused on aviation, such as unmanned aerial vehicles (UAV).
Jarauta Arabí, Àlex, Pons Prats, Jordi
core   +1 more source

Fuel cells [PDF]

open access: yes, 2011
Tato bakalářská práce se zabývá technologii palivových článků, jejich principem a rozdělením. Také je zde uveden postup pro získání vodíku ze zemního plynu jako paliva. Dále jsou zde uvedeny výhody a nevýhody palivových článků.
Ralbovský, Peter
core   +1 more source

Print‐and‐Plate Architected Electrodes for Electrochemical Transformations Under Flow

open access: yesAdvanced Functional Materials, EarlyView.
Typical flow cell electrodes are composed of stochastic porous carbon, limiting understanding of electrode structure‐performance relationships. This work describes an approach, termed “print‐and‐plate,” to prepare porous electrodes by direct ink writing followed by conformal metal coating.
Dylan M. Barber   +12 more
wiley   +1 more source

Radiation grafted membranes [PDF]

open access: yes, 2008
The development of proton-exchange membranes for fuel cells has generated global interest in order to have a potential source of power for stationary and portable applications.
Alkan Gursel, Selmiye   +5 more
core   +1 more source

Flexible Leaf‐Like Fuel Cell From Plasmonic Janus Nanosheet

open access: yesAdvanced Functional Materials, EarlyView.
A flexible leaf‐like fuel cell is fabricated by conductive gold nanowire sponge‐supported plasmonic Janus nanosheet, which can generate a power of 8.93 mW cm⁻2 with less than 10% performance deterioration even being bent or twisted. Further assembly in a tree‐like layout demonstrates omnidirectional light harvesting capability and wind resistance ...
Yifeng Huang   +3 more
wiley   +1 more source

Regenerative Hydrogen-oxygen Fuel Cell-electrolyzer Systems for Orbital Energy Storage [PDF]

open access: yes, 1984
Fuel cells have found application in space since Gemini. Over the years technology advances have been factored into the mainstream hardware programs. Performance levels and service lives have been gradually improving.
Sheibley, D. W.
core   +1 more source

Hydrophobic Deep Eutectic Solvent (DES) Design Enables Optimally Hydrated DES‐in‐Water Electrolytes for High‐Performance Bromine Redox‐Enhanced Energy Storage Systems

open access: yesAdvanced Functional Materials, EarlyView.
Faradaic charging with bromine redox chemistry shows promise for energy storage, yet its efficient use in aqueous electrolytes is hindered by water decomposition and polybromides' cross‐diffusion, leading to suboptimal cell performance. This study introduces a tetrabutylammonium bromide‐based hydrated deep eutectic electrolyte with optimized water ...
Tae Pyeong Eom   +4 more
wiley   +1 more source

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