Article ID Journal Published Year Pages File Type
62320 Journal of Catalysis 2008 12 Pages PDF
Abstract

We present Pt particle size and fuel cell results for carbon black, carbon fibers, and single-walled carbon nanotubes (SWCNTs). The study investigated how high-temperature liquid and supercritical fluid synthesis conditions could influence the Pt particle size and fuel cell performance of these nanocomposite catalyst materials. High-temperature methanol is a suitable medium for Pt particle size deposition, generating smaller particles (90% measuring ⩽5 nm). The addition of a surfactant, such as sodium dodecyl sulfate, to the fluid medium improved the fuel cell performance and Pt utilization of all 3 supports by 27 to 63%, with the best catalyst material, Pt/SWCNTs, having a peak power density of 449 mW/cm2. This synthesis technique was a very fast (<5 min) process with no reactor sidewall effects on Pt particle size or yield.

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
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