Results 31 to 40 of about 13,237 (207)

Digitization and traceability: main results of the Living Lab on the wood-energy supply chain in Italy

open access: yesForest@, 2021
Italy is the first importer of wood-energy biomass worldwide, with tons of timber illegally imported every year and significant negative socio-economic and environmental consequences.
Ciliberti S   +3 more
doaj   +1 more source

On the Concentration Overpotential of PEFC with Micromachined Ti Current Collector

open access: yesJournal of Thermal Science and Technology, 2010
Micromachined titanium thin film current collector, Ti-CC, that is developed in our previous work is used to investigate the concentration overpotential due to the liquid water filling in the through-holes of Ti-CC.
Kazuyoshi FUSHINOBU   +2 more
doaj   +1 more source

Visualization of dynamic behavior of liquid water in the microporous layer of polymer electrolyte fuel cell during water injection by time-resolved X-ray computed tomography

open access: yesElectrochemistry Communications, 2021
Liquid water behavior in the microporous layer (MPL) of a polymer electrolyte fuel cell (PEFC) was investigated using time-resolved X-ray computed micro-tomography (CT) to elucidate the unsteady flow during flooding.
Satoshi Yamaguchi   +5 more
doaj   +1 more source

Experimental investigation on performance and water transfer in passive type PEFC

open access: yesNihon Kikai Gakkai ronbunshu, 2017
A fuel cell with a simple structure and operating at nearly ambient temperature and pressure is suitable for low cost small-sized generator sets ranging from several to tens Watts for home, outdoor and emergency use.
Eiji EJIRI, Daiki ISONO
doaj   +1 more source

PEF Priming of Seeds for Microgreen Production: A Comparative Study

open access: yesApplied Sciences
Seed priming with Pulsed Electric Fields (PEF) is a promising strategy to enhance early plant development and crop quality. This study evaluated PEF priming effects on Beetroot (Beta vulgaris L.), Arugula (Eruca vesicaria), and Basil (Ocimum basilicum L.)
Mafalda Aguiar-Macedo   +4 more
doaj   +1 more source

The Potential Effect on the Performance of CrN/Cr-Coated SS316L Bipolar Plates and Their Durability in Simulated Cathodic HT-PEFC Environments

open access: yesEnergies, 2023
This study further investigates the effect of potential on the corrosion resistance, the self-healing performance and the durability of CrN/Cr-coated SS316L bipolar plates with artificial defects (CR-316) in simulated cathodic HT-PEFC environments by ...
Ruiyu Li   +5 more
doaj   +1 more source

Forest certification as a tool to support sustainable development in forest management

open access: yesJournal of Forest Science, 2015
The concept of sustainable development is currently known and used in many contexts across a wide range of industries. Nevertheless, specific approaches to achieving the strategy of sustainability can be found in the individual sectors. The beginnings of
A. Mikulková   +3 more
doaj   +1 more source

Leveraging Digital Advanced Manufacturing to Enable Polymer Electrolyte Fuel Cells With Ultrahigh Gravimetric Power Density

open access: yesAdvanced Energy Materials, EarlyView.
This study employs digital advanced manufacturing to develop lightweight, compact porous distributors as alternatives to conventional bipolar plates in PEM fuel cells. A graphene‐coated nickel foam achieves a power density of 1.52 W cm−2, while titanium‐based designs deliver lightweight solutions: an LPBF‐fabricated Gyroid lattice reaches 1.36 W cm−2 ...
Hadi Heidary   +9 more
wiley   +1 more source

Fuels for Fuel Cells: Requirements and Fuel Processing

open access: yesCHIMIA, 2004
Polymer electrolyte and solid oxide are the two fuel cell types (PEFC, SOFC) under development in Switzerland. The very distinct operating temperatures of 80°C (PEFC) and 800–950°C (SOFC) impose fundamentally different requirements upon the ...
Jan Van Herle   +8 more
doaj   +1 more source

Highly Permeable Perfluorinated Sulfonic Acid Ionomers for Improved Electrochemical Devices: Insights into Structure-Property Relationships. [PDF]

open access: yes, 2019
Rapid improvements in polymer-electrolyte fuel-cell (PEFC) performance have been driven by the development of commercially available ion-conducting polymers (ionomers) that are employed as membranes and catalyst binders in membrane-electrode assemblies ...
Chowdhury, Anamika   +6 more
core   +2 more sources

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