Results 201 to 210 of about 495,484 (410)

Impact of Transition Metals and Electrocatalyst Layer Thickness on the Pt‐Based Cathodes of Proton Exchange Membrane Fuel Cells – Do Multimetallic Electrocatalysts Necessarily Yield an Improved Performance?

open access: yesAdvanced Energy Materials, EarlyView.
Nonnoble transition‐metals (TMs) in PtCuNi/C catalysts have a dual influence in proton‐exchange membrane fuel cell cathode catalyst layer. While TMs act as a “sacrificial component” of PtCuNi/C, inhibiting Pt dissolution from the PtMx nanoparticles bearing the active sites, they promote the formation of separate catalysts and ionomer domains in the ...
Ricardo Sgarbi   +16 more
wiley   +1 more source

Fuel Consumption Study for Auxiliary Engines that Equip an Oil Tanker

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2017
The paper deals with an oil tanker whose propulsion system with internal combustion engine during navigation was investigated. For a power plant with internal combustion engines we distinguish the subsystems: the internal combustion engine; consumer (s);
Mariana LUPCHIAN
doaj  

High‐Performing Perovskite/Ruddlesden‐Popper Fuel Electrode for High‐Temperature Steam Electrolysis

open access: yesAdvanced Energy Materials, EarlyView.
By combining perovskite and Ruddlesden‐Popper phases, a Ni‐free fuel electrode with exceptional electrocatalytic activity and ionic conductivity is developed. This approach minimizes polarization resistance, achieving 0.053 Ω cm2 at 800 °C and 1.084 W cm−2 power density.
Yousef Alizad Farzin   +5 more
wiley   +1 more source

Application Areas of Ionic Hydraulic Fluids

open access: yesChemical Engineering &Technology, Volume 46, Issue 1, Page 14-20, January 2023., 2023
Ionic liquids as high‐tech technical fluids have also made their way into the field of hydraulic drives. With excellent lubricating properties, a wide temperature range, low pour point and vapor pressure, as well as nonflammability and environmental suitability, problems with only one type of fluid, namely, an ionic hydraulic fluid, instead of using ...
Darko Lovrec, Roland Kalb, Vito Tič
wiley   +1 more source

Lightweight piston [PDF]

open access: yes, 1987
A lightweight piston composed of carbon-carbon composites is presented. The use of carbon-carbon composites over conventional materials, such as aluminum, reduces piston weight and improves thermal efficiency of the internal combustion reciprocation ...
Taylor, Allan H.
core   +1 more source

Photocatalytic and Electrochemical Synthesis of Biofuel via Efficient Valorization of Biomass

open access: yesAdvanced Energy Materials, EarlyView.
This review highlights biomass and biofuel traits, exploring photocatalysis and electrocatalysis mechanisms and their synergistic technologies in biofuel production. It analyzes environmental and economic impacts of green catalytic processes, assesses current challenges, and outlines future research directions, condensing complex topics into a focused ...
Dalin Sun   +9 more
wiley   +1 more source

PERANCANGAN ULANG PISTON MOBIL TOYOTA HARDTOP 6 SILINDER BAHAN BAKAR BENSIN 4200 CC [PDF]

open access: yes, 2008
Piston represent important component in motor burn of where motor burnheating power become mechanic energy by way of combustion of fuel. Whenheating power for combustion to become activator tanaga yielded outside from machine referred motor burn outside ...
Ardiyan, Dhani
core  

Home - About - Disclaimer - Privacy