Izvorni znanstveni članak
https://doi.org/10.5599/jese.487
Insights into electrochemical dealloying of Cu out of Au-doped Pt-alloy nanoparticles at the sub-nano-scale
Matija Gatalo
orcid.org/0000-0002-5041-7280
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Primož Jovanović
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Francisco Ruiz-Zepeda
orcid.org/0000-0002-2637-3433
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Andraž Pavlišič
; Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia
Ana Robba
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Marjan Bele
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Goran Dražić
orcid.org/0000-0001-7809-8050
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Miran Gaberšček
orcid.org/0000-0002-8104-1693
; Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
Nejc Hodnik
orcid.org/0000-0002-7113-9769
; Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia
Sažetak
Pt alloy nanoparticles present the most probable candidate to be used as the cathode cathodic oxygen reduction reaction electrocatalyst for achieving commercialization targets of the low-temperature fuel cells. It is therefore very important to understand its activation and degradation processes. Besides the ones known from the pure Pt electrocatalysts, the dealloying phenomena possess a great threat since the leached less-noble metal can interact with the polymer membrane or even poison the electrocatalyst. In this study, we present a solution, supported by in-depth advance electrochemical characterization, on how to suppress the removal of Cu from the Pt alloy nanoparticles.
Ključne riječi
Electrocatalysis; EFC-ICP-MS; IL-TEM; Pt alloy; ORR
Hrčak ID:
194870
URI
Datum izdavanja:
3.3.2018.
Posjeta: 1.147 *