polymer electrolyte fuel cells
Electrochemical Dissolution of Platinum and Ruthenium from Membrane Electrode Assemblies of Polymer Electrolyte Fuel Cells
... dissolve noble metals from Pt-loaded electrodes using several potential wave profiles and have shown that a saw-tooth wave is 15 times faster than constant potentials are. In order to adapt the electrochemical ...
5
Effects of catalyst agglomerate shape in polymer electrolyte fuel cells investigated by a multi-scale modelling framework
... Evidently, the increase in the specific surface area of the catalyst support, which is the ratio between its surface area and volume, leads to an increase in the dispersion and the utilisation of the platinum ...
47
Synthesized Bimetallic Electrocatalyst for Oxygen Reduction Reaction in Polymer Electrolyte Fuel Cells
... In the present study, a step by step process was applied to synthesize bimetallic electrocatalyst (Ru and Pt on VulcanXC-72R). This process can reduce the amount of platinum and increase the gas diffusion electrode (GDE) ...
6
The effects of water and microstructure on the performance of polymer electrolyte fuel cells
... in the gas pores and dissolved water within the electrolyte. The electrons migrate through the carbon components of the layer while the protons migrate through pathways provided by the electrolyte. The ...
18
“Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology”137-142
... covers polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells ...experienced fuel cell scientists and engineers in this ...low-temperature ...
6
Effect of gravity and gas flow direction on the operation of Polymer Electrolyte Membrane Fuel Cells
... During fuel cell operation, liquid water is formed by the reactions occurring in the cathode catalyst ...when fuel cells are operated at high current densities, the power densities of cases 2 and 4 ...
22
Recent progress in electrocatalysts with mesoporous structures for application in polymer electrolyte membrane fuel cells
... This mini-review summarises recent developments and exciting research in the application of mesoporous materials as anode and cathode electrocatalysts in polymer membrane fuel cells. For anode ...
17
Fabrication of novel nanomaterials for polymer electrolyte membrane fuel cells and self-cleaning applications
... Fuel cells (FCs) show promise to be the energy conversion devices for the 21 st century due to several ...of fuel cells is high efficiency. Fuels are oxidized at the fuel cell anode, ...
176
Novel polymer electrolyte membranes for fuel cell applications
... acid fuel cells (PAFC) are the only type of fuel cells used in commercial ...carbonate fuel cells (MCFC) usually operate around 650 o ...oxide fuel cells (SOFC), ...
175
Effects of Gas Channel Design on Water Management and on the Performance of Polymer Electrolyte Membrane Fuel Cells: A Review
... the fuel cell operates under steady-state conditions, (2) isothermal boundary conditions are applied to external walls, (3) reactant flows within the fuel cell are laminar, (4) reactants and products are ...
16
The effects of carbon nanotube on the properties of graphite-carbon black-polypropylene composite for bipolar plate
... ix LIST OF FIGURE FIGURE TITLE 1.1 Polymer Electrolyte Membrane Fuel Cells PEMFC PAGE 3 Schematic 1.2 Structure diagram of PEM fuel cell 3 1.3 Photograph of a graphite bipolar plate with[r] ...
24
Studies on PEM Fuel Cells Using Various Alcohols for Low Power Applications
... Alcohol Fuel Cell (DAFC) appears to be the most promising replacement for batteries in portable applications such as cellular phones, personal Digital Assistants (PDAs), digital cameras and laptop ...alcohol ...
9
Oxygen Reduction Reaction on PtCo Nanocatalyst: (Bi)sulfate Anion Poisoning
... Pt alloy electrocatalysts have been demonstrated to be superior to Pt in polymer electrolyte membrane fuel cells (PEMFC) due to their higher activity toward oxygen reduction reaction (ORR) ...
6
Vulcan/Pt/Ce Catalysts Prepared by Impregnation Using EDTA for Direct Methanol Fuel Cell, Direct Ethanol Fuel Cell, and Polymer Electrolyte Membrane Fuel Cell
... methanol fuel cells (DMFC’s) use a proton conducting electrolyte membrane (PEM) in an acidic ...acidic fuel cells, especially regarding the perfluorosulfo- nic-acid membrane stability ...
9
Polymer Electrolyte Membrane Fuel Cells (PEMFC) in Automotive Applications: Environmental Relevance of the Manufacturing Stage
... of PGM, and the energy consumption to manufacture bi- polar plates [12]. Analysing the contribution of the stack production further, two components turn out to be of spe- cial relevance. The GDE is responsible for a ...
7
Fuel Cell Technology: A Review
... Fuel cells are one of the most promising sources of renewable energy and can be considered as clean energy sources because of their low sulphur and nitrogen oxide emissions and low noise level ...A ...
6
Chemically Crosslinked Polymer Electrolyte Membranes from Fluorinated Liquid Precursors for Application in Fuel Cells
... from polymer materials, good ability to serve as mechanical separator between fuel and oxygen from the air, and choice of thicknesses in membrane electrode assembly (MEA) fabrication have attracted interest ...
252
A REVIEW ARTICLE ON FUEL CELL
... recharging. Fuel cells will change the telecommuting world, powering laptops and palm pilots hours longer than ...micro fuel cells include pagers, video recorders, portable power tools, and ...
7
Depositing catalyst layers in polymer electrolyte membrane fuel cells : a review
... Electrodeposition of platinum from chloroplatinic acid was first performed in 1894. Since then there were a number of investigations of the process and variables including substrate treatments, different acid ...
28
Innovative Membrane Electrode Assemblies For Polymer Electrolyte Membrane Fuel Cells
... real fuel cell conditions is more critical than simulated RDE conditions with pure oxygen saturated flooded ...real fuel cell conditions, the sluggish ORR reaction will not occur unless triple phase ...
234