Results 11 to 20 of about 4,245 (208)

PEFC in Germany

, 2001
La certification forestière PEFC a connu un succès rapide en Allemagne : en à peine plus d'un an, d'août 2000 à octobre 2001, plus de 4,9 millions d'hectares ont été certifiés. Le système de certification adopté se base sur une forte implication des propriétaires (publics et privés), sur une volonté d'ouverture à toutes les parties intéressées et sur ...
Weiss, Stéphane
openaire   +3 more sources

Novel PEFC Application for Deuterium Isotope Separation [PDF]

Materials, 2017
The use of a polymer electrolyte fuel cell (PEFC) with a Nafion membrane for isotopic separation of deuterium (D) was investigated. Mass analysis at the cathode side indicated that D diffused through the membrane and participated in an isotope exchange reaction. The exchange of D with protium (H) in H2O was facilitated by a Pt catalyst. The anodic data
Matsushima, Hisayoshi, Ogawa, Ryota, Shibuya, Shota, Ueda, Mikito   +3 more
openaire   +5 more sources

PEFC: Stacks, Systems, and Applications

CHIMIA, 2004
This article gives an overview on the research and development activities pursued in the area of polymer electrolyte fuel cell stacks and systems in Switzerland in 2004.
Felix N. Büchi, Jean-François Affolter, Stefan Camenzind, Niels Chmielewski, Philipp Dietrich, Michael Höckel, Martin Ruge, Marco Santis   +7 more
doaj   +2 more sources

Spatial Engineering of Gas Diffusion Layers Overcomes Mass Transport Limitations in Fuel Cells. [PDF]

Adv Sci (Weinh)
ABSTRACT Mass transport limitations at high current densities hinder polymer electrolyte fuel cell (PEFC) performance due to inefficient water management and reactant distribution. Gas diffusion layer (GDL) perforation offers a potential solution as an alternative to complex flow‐field modifications.
Zhou S, Du W, Chen J, Wu Y, Li B, Li J, Xu L, Kockelmann W, Lin M, Coppens MO, Shearing PR, Jervis R, Miller TS.   +12 more
europepmc   +2 more sources

XAFS measurement system using undulator synchronized on-the-fly monochromator scan at SPring-8 BL36XU. [PDF]

J Synchrotron Radiat
Nonlinear scanning of a compact channel‐cut monochromator synchronized with an undulator‐gap movement system enables fast high‐flux X‐ray absorption fine structure measurements.In X‐ray absorption fine structure (XAFS) measurements at undulator beamlines, it has been difficult to simultaneously achieve both spectral time resolution and high X‐ray flux ...
Ishiguro N, Uruga T, Kaneko T, Tanaka T, Joti Y, Motomura K, Yamazaki H, Senba Y, Ohashi H, Yabashi M, Takahashi Y.   +10 more
europepmc   +2 more sources

Jigsaw Puzzle Inspired Patterning of Gas Diffusion Layers for Enhanced Water Management in Polymer Electrolyte Fuel Cells. [PDF]

Adv Sci (Weinh)
A novel jigsaw‐inspired method introduces patterned hydrophilic domains into gas diffusion layers (GDLs) to enhance water management in polymer electrolyte fuel cells (PEFCs). This scalable technique improves high‐current performance by separating water and gas pathways, offering a promising advance for hydrogen‐based energy systems.
Can EM, Nishihara M, Sasaki K, Lyth SM.
europepmc   +2 more sources

How Mixed Are Production-Oriented Planted Forests? A Global Review and Classification Approach. [PDF]

Glob Chang Biol
We conducted a global review of production‐oriented mixed planted forests (MPF) and developed a standardized index to classify their admixture level using a multi‐criteria decision analysis (PROMETHEE II). The review considers 153 studies and 253 plots, and the MPF Index (scale 0–1) integrates multiple design indicators related to species composition ...
Cagnoni LB, Weih M, Adler A, Guillemot J, Brancalion PHS.   +4 more
europepmc   +2 more sources

Visualization of Temperature Distribution and Clarification of Heat and Mass Transfer Mechanism in a Single Cell of PEFC

Journal of Thermal Science and Technology, 2009
Polymer electrolyte fuel cell (PEFC) has been developing as clean power generation technology. However, there are some subjects to spread PEFC among industries and homes in the world.
Akira NISHIMURA, Kenichi SHIBUYA, Masayuki TAKEUCHI, Masafumi HIROTA, Seizo KATO, Yoshihiro NAKAMURA, Hironari TACHI, Masahiko NARITA   +7 more
doaj   +1 more source

Liquid Water Motion in a PEFC [PDF]

ECS Meeting Abstracts, 2008
Abstract not Available.
Fangming Jiang, Chao-Yang Wang
openaire   +1 more source

Hardware/Software Data Acquisition System for Real Time Cell Temperature Monitoring in Air-Cooled Polymer Electrolyte Fuel Cells

Sensors, 2017
This work presents a hardware/software data acquisition system developed for monitoring the temperature in real time of the cells in Air-Cooled Polymer Electrolyte Fuel Cells (AC-PEFC).
Francisca Segura, Veronica Bartolucci, José Manuel Andújar   +2 more
doaj   +1 more source