Hydrogen proton exchange membranes

Molecular-Level Modeling of the Structure and Proton Transport within the Membrane Electrode Assembly of Hydrogen Proton Exchange Membrane Fuel Cells... 

Measured hydrogen proton exchange membrane (PEM) performance... 

This chapter addresses the activities of the International Partnership for a Hydrogen Economy (IPHE) and the U.S. Department of Energy (DOE) in response to specific research opportnnities associated with prodncing a market-competitive hydrogen proton exchange membrane (PEM) fuel cell, namely research opportunities to develop advanced ... 

Source Based on Mahadevan, K. et al. 2007. Identification and characterization of near-term direct hydrogen proton exchange membrane fuel cell markets. Battelle. http //wwwl. eere.energy.gOv/hydrogenandfuelcells/pdfs/pemfc econ 2006 report final 0407.pdf (accessed May 29,2009). 

Ford Motor Company. (1997). Direct Ilydrogcn-Fuclcd Proton Exchange Membrane Fuel Cell System for Transportation Applications Hydrogen Vehicle... 

This proton exchange membrane is used in both hydrogen and methanol fuel cells, in which a catalyst at the anode produces hydrogen from the methanol. Because the membrane allows the protons, but not the electrons, to travel through it, the protons flow through the porous membrane to the cathode, where they combine with oxygen to form water, while the electrons flow through an external circuit. 

This automobile is powered by a hydrogen fuel cell with a proton exchange membrane. Its operation is pollution free, because the onl product of the combustion is water. 

The authors developed a multi-layered microreactor system with a methanol reforma- to supply hydrogen for a small proton exchange membrane fiiel cell (PEMFC) to be used as a power source for portable electronic devices [6]. The microreactor consists of four units (a methanol reformer with catalytic combustor, a carbon monoxide remover, and two vaporizers), and was designed using thermal simulations to establish the rppropriate temperature distribution for each reaction, as shown in Fig. 3. 

Increasing the utilization of hydrogen as an energy carrier in transportation and distributed power generation applications based on proton exchange membrane (PEM) fuel cells will create a demand for plants that produce high-purity hydrogen as the primary product. 

In the case of 50 kW power, the rate of hydrogen supply needed (LH) is around 1.69 X 103 (mol/h) at the energy-conversion-efficiency level of 45% for the proton exchange membrane fuel cell (PEM-FC) [38]. 

Catalytic Processes of Hydrogen Production for Proton-Exchange Membrane Fuel Cell... 

Ferrel, J., Kotar, A. and Stern, S. (1996). Direct Hydrogen Fuelled Proton Exchange Membrane (PEM) Fuel Cell System for Transportation Applications. Final report, Section 3 Hydrogen Infrastructure Report. Prepared for the Ford Motor Company and the Department of Energy. 

---