Listar por tema "Fuel cells"
Mostrando ítems 21-40 de 48
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An exergetic analysis of an ethanol FED SOFC-GT hybrid system
(2009)A parametric analysis optimization and comparison of the exergetic efficiency (2nd law) of two different Solid Oxide Fuel Cell based power plants (SOFC-GT and SOFC) is carried out in the present work. The fuel with which ... -
Exergy analysis of an ethanol fuelled proton exchange membrane (PEM) fuel cell system for automobile applications
(2005)An integrated ethanol fuelled proton exchange membrane fuel cell (PEMFC) power system was investigated following a second law exergy analysis. The system was assumed to have the typical design for automobile applications ... -
Glucose electrooxidation in alkaline medium: Performance enhancement of PdAu/C synthesized by NH3 modified pulse microwave assisted polyol method
(2015)Lack of highly efficient and stable electrocatalysts for glucose electrooxidation is a bottleneck for the real application of glucose fuel cells and electrochemical sensors. Herein we report the synthesis of the PdAu/C ... -
Grain and grain boundary transport in BaCe0.5Zr0.3Ln0.2O3−Δ (Ln – Y or lanthanide) electrolytes attractive for protonic ceramic fuel cells application
(2017)Protonic ceramic fuel cells (PCFCs) belong to very attractive energy conversion systems, which are able to operate effectively at low- and intermediate temperature ranges. The improvement of their electrochemical characteristics ... -
Hierarchically skeletal multi-layered Pt-Ni nanocrystals for highly efficient oxygen reduction and methanol oxidation reactions
(2021)Pt based materials are the most efficient electrocatalysts for the oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) in fuel cells. Maximizing the utilization of Pt based materials by modulating their ... -
How far are direct alcohol fuel cells from our energy future?
(2007)Direct alcohol fuel cells (DAFCs) have been attracting more and more attention and interest during the last decade due to their simplicity, the easy handle and the high power density of the liquid alcohol fuels. However, ... -
Hydrogen storage station location selection in sustainable freight transportation via intuitionistic hesitant decision support system
(2022)Increasingly fierce competition in energy industry for alternative fuels has raised demand for fuel storage stations to be one of the pivots towards sustainable urban freight transportation. For zero-emission hydrogen-powered ... -
Investigating the spillovers and connectedness between green finance and renewable energy sources
(2022)Although a few studies have analyzed the nexus of renewable energy and green finance, the literature lacks the use of renewable energy by sources. The other major failure is that it uses only annual and small data. Therefore, ... -
Molybdenum-modified and vertex-reinforced quaternary hexapod nano-skeletons as efficient electrocatalysts for methanol oxidation and oxygen reduction reaction
(2019)Noble metal binary and ternary catalysts have become a new class of fuel cell electrocatalysts due to their high catalytic activity. However, improvement is still necessary to reduce the consumption of Pt and obtain the ... -
A new Dy-doped BaCeO3-BaZrO3 proton-conducting material as a promising electrolyte for reversible solid oxide fuel cells
(2016)The present work describes the features of the synthesis and physicochemical and electrical properties of a new Dy-doped BaCeO3-BaZrO3 proton-conducting electrolyte as well as its application in a reversible solid oxide ... -
Nitrogen-doped ordered mesoporous carbon: synthesis and active sites for electrocatalysis of oxygen reduction reaction
(2015)In the present work, a novel impregnation method, namely vaporization-capillary condensation method, is developed to synthesize nitrogen-doped ordered mesoporous carbon. This method allows for the preferential infiltration ... -
A novel sulfur-nitrogen dual doped ordered mesoporous carbon electrocatalyst for efficient oxygen reduction reaction
(2016)Despite nitrogen doped carbon (NC) materials as metal-free electrocatalysts for oxygen reduction reaction (ORR) have shown desirable performance, the state-of-the-art of NC materials is still far from satisfaction for ... -
Oxygen Reduction Reaction over PtFeM (M = Mo, V, W) Alloy Electrocatalysts: Role of the Compressive Strain Effect on Pt
(2019)The high level loading requirement of platinum and the sluggish oxygen reduction kinetics - catalyzed by platinum-based electrocatalysts - create major bottlenecks for cost-effective application of fuel cell technology. ... -
PEM vs. AEM fuel cells fed with hydrogen or hydrogen-rich alcohols: Physico-electrochemical phenomena and performance characteristics
(2013)This review focuses on: (a) describing the physicoelectrochemical transport phenomena in alkaline Anion Exchange Membrane Fuel Cells (AEMFCs) and acidic Proton Exchange Membrane Fuel Cells (PEMFCs) fed with hydrogen or ... -
Performance modeling of an alkaline anion exchange membrane-based direct glucose fuel cell
(2013)An AEM-based DGFC performance model is developed and compared against literature experimental results. Performance predictions for different anode and PtAg/C cathode catalysts, using the 1-D flux-based model, are reported. ... -
Proton-conducting BaCe0.5Zr0.3Ln0.2O3-δ (Ln = Yb, Gd, Sm, Nd, la or Y) ceramics for solid oxide fuel cell applications: Effects of acceptor-doping on microstructure, thermal and electrical properties
(2015)Six materials belonging to Ln-doped BaCeO3-BaZrO3 system (Ln = Yb, Y, Gd, Sm, Nd, La) are prepared and characterized in the present work. The impact of the type of the acceptor dopant on (i) the microstructure (relative ... -
Pt based anode catalysts for direct ethanol fuel cells
(2003)In the present work several Pt-based anode catalysts supported on carbon XC-72R were prepared with a novel method and characterized by means of XRD, TEM and XPS analysis. It was found that all these catalysts are consisted ... -
Recent advances in direct alcohol PEMFCS
(2005)Direct alcohol proton exchange membrane fuel cells (DAFCs) have been under active and extensive investigation worldwide due to the easy handle of the liquid fuels, which can be directly fed to the anode compartment and ... -
Recent advances on oxygen reduction electrocatalysis: Correlating the characteristic properties of metal organic frameworks and the derived nanomaterials
(2020)This review summarizes the current advances of hetero-doped (Fe, Co, P, S, N) nanostructures derived from MOFs (metal-organic frameworks) for the oxygen reduction reaction (ORR) electrocatalysis. These nanomaterials are ... -
Recent progress in direct ethanol proton exchange membrane fuel cells (DE-PEMFCs)
(2006)Direct ethanol fuel cells (DEFCs) belong to the family of proton exchange membrane fuel cells (PEMFCs), in which ethanol is directly used as the fuel. In the present work, the main aspects related to DEFCs such as ...