Jump to main content
Jump to site search

Issue 20, 2013
Previous Article Next Article

Ultra-thin platinum catalytic electrodes fabricated by atomic layer deposition

Author affiliations

Abstract

Because noble metal catalysts (e.g. Pt) are one of the main contributors to low-temperature (<500 °C) fuel cell costs, significant efforts have been made to lower the noble metal loading in constructing fuel cell electrodes. In this work, ultra-thin (∼10 nm) platinum (Pt) cathode/catalyst layers were patterned by atomic layer deposition (ALD) and tested as catalytic electrodes (cathode) for low-temperature solid oxide fuel cells. We found that 180 cycles or approximately 10 nm of ALD Pt, with a Pt loading of only 0.02 mg cm−2, were sufficient for the purpose of a catalytic cathode. Furthermore, this ALD Pt resulted in fuel cell performance comparable to that achieved by 80 nm-thick sputtered Pt. Transmission electron microscope (TEM) observations revealed the optimized number of ALD cycles of Pt for the catalytic electrode, which renders both contiguity and high triple-phase boundary (TPB) density. This result suggests the ability to significantly reduce Pt loading, thereby reducing the cost, and furthermore, can be easily applied to high performance fuel cells with complex 3-D structures.

Graphical abstract: Ultra-thin platinum catalytic electrodes fabricated by atomic layer deposition

Back to tab navigation

Publication details

The article was received on 06 Mar 2013, accepted on 07 Mar 2013 and first published on 25 Mar 2013


Article type: Paper
DOI: 10.1039/C3CP50996F
Citation: Phys. Chem. Chem. Phys., 2013,15, 7520-7525
  •   Request permissions

    Ultra-thin platinum catalytic electrodes fabricated by atomic layer deposition

    J. An, Y. Kim and F. B. Prinz, Phys. Chem. Chem. Phys., 2013, 15, 7520
    DOI: 10.1039/C3CP50996F

Search articles by author

Spotlight

Advertisements