Results 61 to 70 of about 327,547 (230)

PtCo/rGO nano-anode catalyst: enhanced power density with reduced methanol crossover in direct methanol fuel cell

Materials for Renewable and Sustainable Energy, 2018
The higher methanol utilization efficiency in direct methanol fuel cell (DMFC) is one of the key factors that determine the performance of DMFC. Herein, we have synthesized bimetallic PtCo nano-particles (with optimized Pt:Co ratio) decorated reduced ...
Richa Baronia, Jyoti Goel, Jyoti Kaswan, Ajay Shukla, Sunil K. Singhal, Surinder P. Singh   +5 more
doaj   +1 more source

Recent developments, challenges, and future directions in active direct methanol fuel cells

International Journal of Electrochemical Science
Active Direct Methanol Fuel Cells (ADMFCs) have been explored with continuous interest as potentially powerful low-temperature energy conversion technology in portable and distributed power supply systems.
Ephraim Bonah Agyekum, Flavio Odoi-Yorke, Mustafa Abdullah, Arman Ameen, Seepana Praveenkumar, Farhan Lafta Rashid   +5 more
doaj   +1 more source

Performance Analysis of Direct Methanol Fuel Cell for Optimal Operation

Journal of Thermal Science and Technology, 2009
Direct methanol fuel cell (DMFC) is one of promising candidates for power sources of mobile devices. Efficient operation of fuel cell system is very important for long-sustained power supply due to limited tank size.
Changhwan CHO, Yongchan KIM, Young-Soo CHANG   +2 more
doaj   +1 more source

Development of methanol evaporation plate to reduce methanol crossover in a direct methanol fuel cell

, 2006
This research focuses on methanol crossover reduction in direct methanol fuel cells (DMFC) through separating the methanol vapor from its liquid phase and feeding the vapor passively at low temperature range.
Zhang, Ruiming
core   +1 more source

Variable discrimination of crossover versus mutation using parameterized modular structure

, 2007
Recent work has provided functions that can be used to prove a principled distinction between the capabilities of mutation-based and crossover-based algorithms.
Richard A. Watson, Rob Mills, Mills, Rob, Watson, Richard A.   +3 more
core   +2 more sources

Design and Optimization of a Double‐Column Vapor Recompression Heat Pump Distillation Process via NSGA‐II for Separating Ternary Wide‐Boiling Mixtures

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study proposes a novel double‐column vapor recompression heat pump (DCVRHP) distillation process for separating ternary wide‐boiling‐range mixtures under two different vapor conditions: n‐hexane/n‐heptane/n‐octane using low pressure steam and n‐hexanol/n‐octanol/n‐decanol using high pressure steam.
Zeyang Li, Xiaoxin Gao, Xiaoyu Kang, Ruijie Wang, Xiyuan Chen   +4 more
wiley   +1 more source

Rheological Comparison of Silicone Rubber Crosslinking with Platinum Catalysts and Triethylamine, Methanol & Ethanolamine Solvents

Iranian Journal of Materials Science and Engineering, 2021
The control of silicone rubber’s viscoelastic properties namely loss factor, storage and loss moduli during crosslinking are crucial as its malleable behaviour changes differently under different conditions and affecting the final product.
Rahida Wati Sharudin, Nik Salwani Md Azmi, Muhammad Shafiq Mat Shayuti, Masahiro Ohshima   +3 more
doaj  

Sizing Direct Methanol Fuel Cells for 12/24V Portable Backup Using a Semi-Empirical Polarization Model [PDF]

E3S Web of Conferences
A computational sizing tool was developed for direct methanol fuel cells (DMFC) intended for portable backup power in 12/24 V buses. A semi-empirical polarization model was implemented in MATLAB that combines the reversible term with activation, ohmic ...
Murillo José, Parada-Acosta Maria Celeste   +1 more
doaj   +1 more source

Studies on Methanol Crossover in Liquid-Feed Direct Methanol PEM Fuel Cells

ECS Proceedings Volumes, 1995
The performance of liquid feed direct methanol fuel cells using various types of Nafion membranes as the solid polymer electrolyte have been studied. The rate of fuel crossover and electrical performance has been measured for cells with Nafion membranes of various thicknesses and equivalent weights.
openaire   +1 more source

Strain‐Tunable Photoluminescence From Ge Quantum Dots on Si Nanotips for CMOS‐Compatible Photonics

Advanced Physics Research, EarlyView.
This work studies strain in Ge quantum dots grown on Si nanotips using photoluminescence, X‐ray diffraction, and band structure calculations. It shows how emission changes with dot size, evaluates strain in the dot and substrate, and explains the role of direct and indirect transitions in the optical behavior.
Diana Ryzhak, Johannes Aberl, Enrique Prado‐Navarrete, Lada Vukušić, Oliver Skibitzki, Petr Klenovský, Marvin Hartwig Zoellner, Markus Andreas Schubert, Moritz Brehm, Davide Spirito, Giovanni Capellini   +10 more
wiley   +1 more source