Pt−Ru Supported on Double-Walled Carbon Nanotubes as High-Performance Anode Catalysts for Direct Methanol Fuel Cells
- 14 July 2006
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 110 (31), 15353-15358
- https://doi.org/10.1021/jp0623443
Abstract
Pt−Ru supported on carbon nanotubes (CNTs) (single-walled nanotubes, double-walled nanotubes (DWNTs), and multi-walled nanotubes) catalysts are prepared by an ethylene glycol reduction method. Pt−Ru nanoparticles with a diameter of 2−3 nm and narrow particle size distributions are uniformly deposited onto the CNTs. A simple and fast filtration method followed by a hot-press film transfer is employed to prepare the anode catalyst layer on a Nafion membrane. The Pt−Ru/DWNTs catalyst shows the highest specific activity for methanol oxidation reaction in rotating disk electrode experiments and the highest performance as an anode catalyst in direct methanol fuel cell (DMFC) single cell tests. The DMFC single cell with Pt−Ru/DWNTs (50 wt %, 0.34 mg Pt−Ru/cm2) produces a 68% enhancement of power density, and at the same time, an 83% reduction of Pt−Ru electrode loading when compared to Pt−Ru/C (40 wt %, 2.0 mg Pt−Ru/cm2).Keywords
This publication has 13 references indexed in Scilit:
- The effects of partial substitution of Cr for Ni on the electrochemical properties of Mg1.75Al0.25Ni1−xCrx (0≤x≤0.3) electrode alloysJournal of Power Sources, 2006
- Multiwalled Carbon Nanotube Supported PtRu for the Anode of Direct Methanol Fuel CellsThe Journal of Physical Chemistry B, 2006
- ‘Buckypaper’ from coaxial nanotubesNature, 2005
- Carbon Nanostructures in Portable Fuel Cells: Single-Walled Carbon Nanotube Electrodes for Methanol Oxidation and Oxygen ReductionThe Journal of Physical Chemistry B, 2004
- Pt−Ru/Carbon Fiber Nanocomposites: Synthesis, Characterization, and Performance as Anode Catalysts of Direct Methanol Fuel Cells. A Search for Exceptional PerformanceThe Journal of Physical Chemistry B, 2002
- Erratum: correction: Ordered nanoporous arrays of carbon supporting high dispersions of platinum nanoparticlesNature, 2001
- Graphite Nanofibers as an Electrode for Fuel Cell ApplicationsThe Journal of Physical Chemistry B, 2001
- Engineering aspects of the direct methanol fuel cell systemJournal of Power Sources, 1999
- Methanol oxidation and direct methanol fuel cells: a selective reviewJournal of Electroanalytical Chemistry, 1999
- Thin-film catalyst layers for polymer electrolyte fuel cell electrodesJournal of Applied Electrochemistry, 1992