Results 41 to 50 of about 13,283 (207)

Dynamic Capabilities as Drivers of Circular Business Models: Exploring Direct and Indirect Relationships

Journal of Product Innovation Management, EarlyView.
ABSTRACT Academic Summary Despite the urgent need for a circular economy, firms' transition from linear to circular business models (CBMs) remains slow. While previous research suggests that dynamic capabilities are the key drivers of this transition, it assumes a direct link, overlooking that these capabilities can facilitate change but do not ...
Jörn Block, Thomas Clauss, Matheus Franco, Timo Lemcke, Hubert Speth   +4 more
wiley   +1 more source

Forest certification management experience in Asia Pacific and Europe: A case study of Malaysia and Sweden

Journal of Forest Science
The forest certification is a voluntary programme to ensure that the timber harvested from forests is processed in a sustainable manner by following specific standards.
Shah Badri Mohd Nor, Ahmad Fariz Mohamed, Shamsul Khamis   +2 more
doaj   +1 more source

Fuels for Fuel Cells: Requirements and Fuel Processing

CHIMIA, 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, Alexander Schuler, Lukas Dammann, Marcello Bosco, Thanh-Binh Truong, Erich De Boni, Faegheh Hajbolouri, Frédéric Vogel, Günther G. Scherer   +8 more
doaj   +1 more source

Prognostics and Health Management in Polymer Electrolyte Fuel Cells: Current Trends, Challenges, and Future Directions

Fuel Cells, Volume 26, Issue 2, April 2026.
ABSTRACT Prognostics and health management are crucial for the reliability and lifetime assessment of polymer electrolyte fuel cells (PEFCs). Here, we review the current advances on this topic, focusing mainly on key degradation mechanisms and methodologies such as physics‐aware, data‐driven, and hybrid modeling approaches.
Farideh Abdollahi, Kourosh Malek, Thomas Kadyk, Nadiia Kulyk, Christophe Gerling, Michael H. Eikerling   +5 more
wiley   +1 more source

PEFC- ja FSC-metsäsertifiointistandardien vertailu sekä ekologinen vaikuttavuus lainsäädännön ja tutkimustiedon valossa

Metsätieteen aikakauskirja
Katsauksessa tarkasteltiin FSC- ja PEFC-metsäsertifiointistandardien vaatimuksia Suomen talousmetsien monimuotoisuuden turvaamiseksi. Vertailimme standardeja keskenään sekä suhteessa aiempiin standardeihin, lainsäädäntöön ja ekologiseen tutkimustietoon ...
Pekka Punttila, Tiina Piiroinen, Minna Pappila, Mari Annala   +3 more
doaj   +1 more source

Water vapor exchange system installed in a polymer electrolyte fuel cell to enhance the performance without humidification

Nihon Kikai Gakkai ronbunshu, 2014
Polymer electrolyte fuel cells (PEFCs) generally have external humidifiers to supply humidified hydrogen and oxidant gases, preventing dehydration of the membrane electrode assembly (MEA).
Tatsumi KITAHARA, Hironori NAKAJIMA, Kazuto TSUDA   +2 more
doaj   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, Volume 36, Issue 26, 30 March 2026.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source

Phase change of methanol solution in a microchannel for a reformer using low temperature exhaust heat

Nihon Kikai Gakkai ronbunshu, 2017
Compact power generation systems which consist of methanol reformer and Polymer Electrolyte Fuel Cell (PEFC) are greatly required as emergency power source.
Suguru UEMURA, Katuyuki FUKAI, Keisuke TABATA, Shuichiro HIRAI   +3 more
doaj   +1 more source

Power Generation Characteristics of Polymer Electrolyte Fuel Cells Using Carbon Nanowalls as Catalyst Support Material

C, 2022
We evaluated the power generation characteristics of a polymer electrolyte fuel cell (PEFC) composed of Pt-supported carbon nanowalls (CNWs) and a microporous layer (MPL) of carbon black on carbon paper (CP) as catalyst support materials.
Takayuki Ohta, Hiroaki Iwata, Mineo Hiramatsu, Hiroki Kondo, Masaru Hori   +4 more
doaj   +1 more source

Drastic Enhancement of Activity and Durability for Oxygen Reduction Reaction by Melamine Modification for Platinum Nanocluster‐Loaded Electrocatalysts

Small Science, Volume 6, Issue 3, March 2026.
We developed 1 nm platinum (Pt) nanoclusters whose mass activity and durability were enhanced 6.37 and 2.5 times, respectively, via melamine modification. After durability tests, activity remained 11.0 times higher than commercial catalysts. This strong Pt–melamine interaction stabilizes small clusters, offering a pathway to significantly reduce Pt ...
Ryuki Kurosaki, Tokuhisa Kawawaki, Kaoru Ikeda, Kazutaka Oiwa, Kotaro Sato, Haruna Tachibana, Minoru Inaba, Kenji Iida, Yuichi Negishi   +8 more
wiley   +1 more source