FUEL 238 |
| Carbon Nanotechnologies, Inc., Johnson Matthey Fuel Cells, Inc. and Motorola, Inc., through NIST/ATP support have formed a joint development to exploit the potential of single-wall carbon nanotubes (SWNTs) in polymer electrolyte membrane fuel cells (PEMFCs). The technical objective is to achieve improved PEMFC performance through the creation and use of a “free-standing” electrode in which the precious-metal is supported by a network of single-wall carbon nanotubes. The electrode is “free-standing” in that it does not require a binder to provide mechanical integrity, and it can be fabricated independently of other fuel cell elements. The strength of the nanotubes allows formation of exceedingly thin porous mats that can be chemically manipulated to control affinity for liquid fuels and products such as methanol and water, or to impart the desired liquid or gas permeability enabling appropriate mass transfer within the MEA. In this presentation we will describe SWNT electrodes and MEAs and their performance in high temperature polybenzimidazole fuel cells. The catalyst mass activity and the MEA performance will be analyzed in comparison with those from conventional fuel cell catalysts/ MEAs. |
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Chemistry and Applications of Carbon Nanotubes and Nanoparticles
9:00 AM-12:00 PM, Thursday, 14 September 2006 Palace -- Napa Room, Oral
Sci-Mix
Division of Fuel Chemistry |