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Showing 1 to 20 of 25 for “"direct methanol fuel cell"”.
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Direct methanol fuel cell catalysts with controllable interface
… for room temperature electrooxidation of methanol to prove the existence of Pt-oxophilic metal pair sites and to delineate their contributions to methanol eletrooxidation by bifunctional catalysis. Model bimetallic and multi-component catalysts with customizable and easily identifiable …
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Multiphase Modeling of a Flowing Electrolyte-Direct Methanol Fuel Cell
Direct methanol fuel cells (DMFCs) are considered one of the leading contenders for low power applications due to their energy dense, liquid fuel and their low greenhouse gas emissions. However, DMFCs have lower than predicted performance due to methanol crossover. One proposed solution is to allow …
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NICKEL HYDROXIDE NANORIBBONS FOR EFFICIENT WATER SPLITTING AND DIRECT METHANOL FUEL CELL
Oxygen evolution reaction (OER) and methanol oxidation reaction (MOR) are very important reactions in hydrogen harvesting system and direct methanol fuel cell (DMFC). However, these two reactions are sluggish processes, due to the multi-proton coupled reactions. In this work, we report the first …
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Polymer/nano-organic composite proton exchange membranes for direct methanol fuel cell application
… proton exchange membrane is one key component of direct methanol fuel cells, which has double functions of conducting protons, separating fuels and oxidant. At present, the performance and price of sulfonic acid proton exchange membrane used in direct methanol fuel cells are deeply concerned. In …
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Synthesis and characterisation of proton conducting membranes for direct methanol fuel cell (DMFC) applications
For a direct methanol fuel cell (DMFC), the proton exchange membrane must conduct protons and be a good methanol barrier. In addition to the high methanol permeability achieved by these membranes, they are very expensive and contribute greatly to theoverall cost of fuel cell set up. The high cost …
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Direct methanol fuel cell with extended reaction zone anode : PtRu and PtRuMo supported on fibrous carbon
The direct methanol fuel cell (DMFC) is considered to be a promising power source for portable electronic applications and transportation. At present there are several challenges that need to be addressed before the widespread commercialization of the DMFC technology can be implemented. The …
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Electrochemical investigation of platinum nanoparticles supported on carbon nanotubes as cathode electrocatalysts for direct methanol fuel cell
… Pt/LPGMWCNT also showed better tolerance toward methanol, however it was not highly active towards methanol, and hence the methanol oxidation peak current observed between 0.75 and 08 potential was the smallest. In this study a wide range of instruments was used to characterize the properties and …
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Performance Characteriztion and Modeling of a Passive Direct Methanol Fuel Cell (DMFC) over a Range of Operating Temperatures and Relative Humidities
… and more effective means of energy production, fuel cells become increasingly more popular. While different fuel cells are already found in industry today, the direct methanol fuel cell (DMFC) is becoming an increasingly more probable means for portable power production. In such applications a …
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The development of inorganic and organic/inorganic membranes for DMFC application
A fuel cell is an energy device that converts chemical energy to electrical energy. Low temperature fuel cells, namely the hydrogen fuel cell and the direct methanol fuel cell are preferred amongst other fuel cell types for stationary and vehicular applications, due to their small size and their …
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Hybrid fuel cell for mobile devices : an integrated approach
… which the current batteries cannot provide. The direct methanol fuel cell has been identified as a promising candidate to provide power to future mobile devices. However, commercialization of mobile devices containing fuel cells has been difficult due to several factors, including inefficiencies …
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Towards and industrial ecosystem for power MEMS
… famous MIT microturbine. The second are micro fuel cells, electrochemical devices which air oxidize chemical fuels, particularly the direct methanol fuel cell which operates at modest temperatures and hence is suitable for use in portable electronics. The third are solid-state devices which …
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Experimental and Numerical Investigations of Tubular-Shaped Direct Methanol Fuel Cells (DMFCs)
… the novel, passively operated, tubular-shaped, Direct Methanol Fuel Cell (DMFC) as an alternative geometry to the traditional planar-shaped fuel cell. The benefit of the tubular geometry compared to the planar geometry is the higher instantaneous volumetric power density provided by the larger …
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Direct Methanol Fuel Cells Using Pure Methanol
<p>Fuel cell technology has attained significant appeal as a form of renewable energy in recent years due to its diverse applications, various fuel types, and lower greenhouse gas emissions. Of the various fuel cell types, direct methanol fuel cells (DMFCs) hold a set of distinct advantages for …
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Proton Exchange Membrane Fuel Cell Systems Based on Aromatic Hydrocarbon and Partially Fluorinated Disulfonated Poly(Arylene Ether) Copolymers
… progress in proton exchange membranes (PEM) for fuel cells. In particular the synthesis and characterization of materials for advanced alternative PEM were studied with an emphasis on structure-property and structure-property-performance relationships. The focus has included firstly a one-step …
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The Structure and Activity of Admetal-Modified Single Crystal Platinum and Gold Electrodes
… structure-activity relationships relevant to direct methanol fuel cell research. The structures of the admetal deposits (Ru or Os) on Pt(111) and Au(111) were also compared to better understand the spontaneous deposition process. X-ray photoelectron spectroscopy (XPS) was used to provide …
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Testing the suitability of local seaweeds and formulated feed as a food source for abalone (Haliotis midae Linnaeus) in an Integrated Land-based Aquaculture System
The direct methanol fuel cell or DMFC is emerging as a promising alternative energy source for many applications. Developed and developing countries, through research, are fast seeking a cheap and stable supply of energy for an ever-increasing number of energyconsuming portable devices. The …
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Preparation and characterisation of Pt-Ru/C catalysts for direct methanol fuel cells
The direct methanol fuel cell (DMFC) is identified as a promising fuel cell for portable and micro fuel cell applications. One of the major benefits is that methanol is an energy dense, inexpensively manufactured, easily stored and transported, liquid fuel (Hamann et al., 2007). However, the DMFC's …
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Bimetallic Electrocatalysts on TiO2 -Based Supports for Methanol Oxidation and Oxygen Evolution
… for the development of active and durable fuel cells and hydrogen production technologies. Generally, electrochemical processes of energy conversion and hydrogen generation in a Proton Exchange Membrane (PEM) utilize precious metals, such as platinum, iridium and ruthenium, as …
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Transport and Structure in Fuel Cell Proton Exchange Membranes
… acid) copolymer membrane for fuel cells, Nafion, were compared. Species transport (protons, methanol, water) in hydrated membranes was found to correspond with the water-self diffusion coefficient as measured by pulsed field gradient nuclear magnetic resonance (PFG NMR), which …
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