Results 11 to 20 of about 247,870 (317)

Quantum Behaviour of Mg and Mg-Al-Zn Microstructure

Crystals, 2023
Magnesium is an essential element because of its many beneficial properties and advantages over other metals, including its lack of risk to people’s health and its reasonable cost. However, Mg has several disadvantages, one of which is its high corrosion
Sahriah Basri, Mohd Ezhar Zulkifli, Nurul Shahzira Hazri, Siti Kartom Kamarudin   +3 more
doaj   +1 more source

Developed endplate geometry for uniform contact pressure distribution over PEMFC active area [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2020
Contact resistance among the components of a polymer exchange membrane fuel cell (PEMFC) has a crucial effect on cell performance. The geometry of the endplate plays an essential role in the contact pressure distribution over the membrane electrode ...
Mohammad Barzegari, Mojtaba Ghadimi, Mostafa Habibnia, Mohammad Momenifar, Kamal Mohammadi   +4 more
doaj   +1 more source

Nanostructured Pd-Based Electrocatalyst and Membrane Electrode Assembly Behavior in a Passive Direct Glycerol Fuel Cell

Nanoscale Research Letters, 2019
The aim of this study was to synthesize, characterize, and observe the catalytic activity of Pd1Au1 supported by vapor-grown carbon nanofiber (VGCNF) anode catalyst prepared via the chemical reduction method.
N. Yahya, S. K. Kamarudin, N. A. Karim, S. Basri, A. M. Zanoodin   +4 more
doaj   +1 more source

Potential of 3D Hierarchical Porous TiO₂-Graphene Aerogel (TiO₂-GA) as Electrocatalyst Support for Direct Methanol Fuel Cells

Nanomaterials, 2023
Fuel cells have already demonstrated their potential for green energy generation. However, the low reaction performance becomes an obstacle in terms of large-scale commercial manufacturing.
Siti Hasanah Osman, Siti Kartom Kamarudin, Sahriah Basri, Nabila A. Karim   +3 more
doaj   +1 more source

Fabrication and Characterization of New Composite Tio2 Carbon Nanofiber Anodic Catalyst Support for Direct Methanol Fuel Cell via Electrospinning Method

Nanoscale Research Letters, 2017
Platinum (Pt) is the common catalyst used in a direct methanol fuel cell (DMFC). However, Pt can lead towards catalyst poisoning by carbonaceous species, thus reduces the performance of DMFC. Thus, this study focuses on the fabrication of a new composite
N. Abdullah, S. K. Kamarudin, L. K. Shyuan, N. A. Karim   +3 more
doaj   +1 more source

Surface oxidation of petroleum pitch to improve mesopore ratio and specific surface area of activated carbon

Scientific Reports, 2021
In this study, surface oxidation of petroleum pitch was performed to enhance the thermal stability, specific surface area, and mesopore ratio of activated carbon. The oxygen uptake of the pitch by surface oxidation has a strong influence on the formation
Song Mi Lee, Seon Ho Lee, Doo-Hwan Jung
doaj   +1 more source

Influence of Graphene Oxide on the Ethanol Permeability and Ionic Conductivity of QPVA-Based Membrane in Passive Alkaline Direct Ethanol Fuel Cells

Nanoscale Research Letters, 2019
Passive alkaline–direct ethanol fuel cells (alkaline–DEFCs) appear to be suitable for producing sustainable energy for portable devices. However, ethanol crossover is a major challenge for passive alkaline–DEFC systems.
Z. Zakaria, S. K. Kamarudin, S. N. Timmiati   +2 more
doaj   +1 more source

Novel Anodic Catalyst Support for Direct Methanol Fuel Cell: Characterizations and Single-Cell Performances

Nanoscale Research Letters, 2018
This study introduces a novel titanium dioxide carbon nanofiber (TiO2-CNF) support for anodic catalyst in direct methanol fuel cell. The catalytic synthesis process involves several methods, namely the sol-gel, electrospinning, and deposition methods ...
N. Abdullah, S. K. Kamarudin, L. K. Shyuan   +2 more
doaj   +1 more source

Nanofiber-Based Oxygen Reduction Electrocatalysts with Improved Mass Transfer Kinetics in a Meso-Porous Structure and Enhanced Reaction Kinetics by Confined Fe and Fe₃C Particles for Anion-Exchange Membrane Fuel Cells

Energies, 2022
The development of high-performance nonprecious metal catalysts for oxygen reduction reactions is critical for the commercialization of fuel cells. In this paper, we report a non-precious catalyst with high-performance, in which Fe and Fe3C is embedded ...
Wenzhe Luo, Longsheng Cao, Ming Hou, Liang He, Yawen Zhou, Feng Xie, Zhigang Shao   +6 more
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Electrical conductivity and physical changes of functionalized carbon nanotube/graphite/stainless steel (SS316L)/polypropylene composites immersed in an acidic solution [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2018
Chemical functionalization of carbon nanotubes (CNTs) and graphite (G) was performed to improve their adhesion to a metal powder (SS316L) and a polypropylene (PP) matrix.
Hendra Suherman, Abu Bakar Sulong, Mohd Yusuf Zakaria, Nishata Royan, Jaafar Sahari   +4 more
doaj   +1 more source