Platinum-Catalyzed Polymer Electrolyte Membrane for Fuel Cells

1999 ◽  
Vol 575 ◽  
Author(s):  
T. Jan Hwang ◽  
Hong Shao ◽  
Neville Richards ◽  
Jerome Schmitt ◽  
Andrew Hunt ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Low Cost ◽  
Polymer Electrolyte Membrane ◽  
Chemical Vapor ◽  
Proton Exchange ◽  
Fabrication Process ◽  
Membrane Electrode ◽  
Fuel Cell Performance ◽  
Electrolyte Membrane

ABSTRACTThe objective of this research is to develop the combustion chemical vapor deposition (CCVD) process for low-cost manufacture of catalytic coatings for proton exchange membrane fuel cell (PEMFC) applications. The platinum coatings as well as the fabrication process for membrane-electrode-assemblies (MEAs) were evaluated in a single testing fuel cell using hydrogen/oxygen. It was found that increasing the platinum loading from 0.05 to 0.1 mg/cm2 did not increase the fuel cell performance. The in-house MEA fabrication process needs to be improved to reduce the cell resistance. Significantly higher performance of Pt coating by the CCVD process has been obtained by MCT's fuelcell industry collaborators who are more experienced with MEA fabrication. The results can not be revealed due to confidentiality agreements.

scholarly journals Simulation of Fuel Cell Technology Using Matlab

2018 ◽  
Vol 7 (3.27) ◽  
pp. 80
Author(s):  
G Sheebha Jyothi ◽  
Y Bhaskar Rao
Keyword(s):  
Mathematical Model ◽  
Fuel Cell ◽  
Energy Supply ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Electrical Energy ◽  
Fast Response ◽  
Proton Exchange ◽  
Electrolyte Membrane ◽  
Exchange Membrane

This paper represents a mathematical model for proton exchange membrane fuel cell(PEMFC)system. Proton exchange membrane fuel cell (also called polymer Electrolyte Membrane fuel cells(PEM)) provides a continuous electrical energy supply from fuel at high levels of efficiency and power density. PEMs provide a solid, corrosion free electrolyte, a low running temperature, and fast response to power.  

scholarly journals A noble metal-free proton-exchange membrane fuel cell based on bio-inspired molecular catalysts

2015 ◽  
Vol 6 (3) ◽  
pp. 2050-2053 ◽  
Author(s):  
P. D. Tran ◽  
A. Morozan ◽  
S. Archambault ◽  
J. Heidkamp ◽  
P. Chenevier ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Noble Metal ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Hydrogen Fuel Cell ◽  
Metal Free ◽  
Electrolyte Membrane ◽  
Molecular Catalysts ◽  
Exchange Membrane

Bio-inspired chemistry allowed for the development of the first noble metal-free polymer electrolyte membrane hydrogen fuel cell (PEMFC). The device proved operational under technologically relevant conditions.

Endoreversible modeling of a PEM fuel cell

2015 ◽  
Vol 40 (4) ◽  
Author(s):  
Katharina Wagner ◽  
Karl Heinz Hoffmann
Keyword(s):  
Fuel Cell ◽  
Power Output ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Electrical Energy ◽  
Proton Exchange ◽  
Functional Dependencies ◽  
Electrolyte Membrane ◽  
Exchange Membrane ◽  
Cell Data

AbstractFuel cells are known for high efficiencies in converting chemical energy into electrical energy. Nonetheless, the processes taking place in a fuel cell still possess a number of irreversibilities that limit the power output to values below the reversible limit. To analyze these, we developed a model that captures the main irreversibilities occurring inside a proton exchange membrane or polymer electrolyte membrane fuel cell. We used the methods of endoreversible thermodynamics, which enable us to study the entropy production of the different sources of irreversibility in detail. Additionally, performance measures like efficiency and power output can be calculated with such a model, and the influence of different parameters, such as temperature and pressure, can be easily investigated. The comparison of the model predictions with realistic fuel cell data shows that the functional dependencies of the fuel cell characteristics can be captured quite well.

Experimental analysis of a dimensionless number in the cathode channels of a polymer electrolyte membrane fuel cell with different head losses

2009 ◽  
Vol 224 (1) ◽  
pp. 95-108 ◽  
Author(s):  
S H Han ◽  
K R Kim ◽  
D K Ahn ◽  
Y D Choi
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Dimensionless Number ◽  
Cell Temperature ◽  
Electrolyte Membrane ◽  
Head Losses ◽  
Temperature And Pressure ◽  
Exchange Membrane

This study investigates the effects of stoichiometry, humidity, cell temperature, and pressure on the performance and the flooding of the proton exchange membrane fuel cell. Values of stoichiometry are 1.5, 2.0, and 2.5 at cell temperatures of 50, 55, and 60 °C, respectively. This study shows that the dimensionless flooding value (FV) is a function of the stoichiometry, humidity, temperature, and pressure. The FV is calculated by using the measured values of temperature, humidity, pressure, and flowrate of the cathode. The effect of the dimensionless number on the flooding of the cathode in the proton exchange membrane fuel cell is analysed in this study. The effects of air stoichiometry, cell temperature, and air humidity are also discussed in this article.

Physical Characterization of Plasma Deposited Polymeric Proton Exchange Membrane Used in Fuel Cells

2010 ◽  
Vol 638-642 ◽  
pp. 1158-1163 ◽  
Author(s):  
Peter Lubomir Polak ◽  
Ronaldo Domingues Mansano ◽  
Rui Alberto Silva ◽  
Igor Proença Silva ◽  
Maria Cristina Ribeiro
Keyword(s):  
Fuel Cells ◽  
Photoelectron Spectroscopy ◽  
Proton Exchange Membrane ◽  
Rutherford Backscattering Spectrometry ◽  
Polymer Electrolyte Membrane ◽  
Chemical Vapor ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Physical Characterization ◽  
Membrane Electrode

The performance of fuel cells is largely dependent on the properties of the membrane electrode assembly (MEA) which consists of a polymer electrolyte membrane and carbon based electrodes. The aim of this work was to obtain new polymer membranes and carbon thin films (for comparison) by Plasma Enhanced Chemical Vapor Deposition (PECVD) and proceed to their physical characterization in order to be able to choose the best conditions that may lead to outstanding proton exchange membranes. The films were deposited on silicon wafers and were analyzed by Scanning Electron Microscopy and Energy Dispersive Spectroscopy (SEM/EDS), Electron Spectroscopy for Chemical Analysis and X-Ray Photoelectron Spectroscopy (ESCA-XPS), Atomic Force Microscopy (AFM), Fourier Transform Infrared Spectroscopy (FTIR) and Rutherford Backscattering Spectrometry (RBS). SEM/EDS and XPS analysis have shown that the chemical composition of the films varied as a function of the plasma (relative percentages of the reactant gases CH4 and SF6) while variation of the pressure and RF power did not have a marked effect on the topographic quality and composition of the membranes. AFM analysis, as well as SEM, made possible to observe the topography of the membranes showing that the films are very smooth with some localized defects. Futhermore, AFM micrographs have shown that the roughness (root mean square - RMS) of the membranes have peak to valley differences in the order of some nanometers. RBS and Profilometer techniques indicated that the deposition rate of the films is not linearly dependent on the plasma composition while FTIR spectroscopy has shown the presence of the perfluorinated sulphonate groups.

scholarly journals High-performance, Durable and Low-Cost Proton Exchange Membrane Electrolyser with Stainless Steel Components

2021 ◽  
Author(s):  
Svenja Stiber ◽  
Noriko Sata ◽  
Tobias Morawietz ◽  
Syed Asif Ansar ◽  
Thomas Jahnke ◽  
...  
Keyword(s):  
High Performance ◽  
Proton Exchange Membrane ◽  
State Of The Art ◽  
Low Cost ◽  
Polymer Electrolyte Membrane ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Electrolyte Membrane ◽  
Current State ◽  
Exchange Membrane

Polymer electrolyte membrane water electrolysis (PEMWE) is the most promising technology for sustainable hydrogen production. However, it has been too expensive to compete with current state-of-the-art technologies due to the...

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