Preparation of Nanocrystalline Nb-Doped SnO2on Mesoporous Carbon for PEFC Electrocatalysts

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Platinum-based nanoparticles decorated on carbon supports (Pt/C) are widely used as electrocatalysts in polymer electrolyte fuel cells (PEFCs). Meanwhile, SnO2 is more stable than carbon at high potentials in cathodic environments. Highly durable Pt/SnO2/C electrocatalysts have therefore previously been developed using carbon nanomaterials as an electron-conducting backbone and SnO2 as a stable support layer for highly dispersed platinum nanoparticles. Here, we report on the development of Pt/SnO2/C electrocatalysts based on mesoporous carbon (MC) scaffolds. The electron conduction pathway through SnO2 was minimized by reducing the SnO2 loading. The use of Pt/SnO2/MC electrocatalysts resulted in high activity towards the oxygen reduction reaction (ORR) as well as excellent start-stop voltage cycling durability in half-cell conditions.

Original languageEnglish
Title of host publicationECS Transactions
PublisherInstitute of Physics
Pages413-423
Number of pages11
Edition9
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2022
Event242nd ECS Meeting - Atlanta, United States
Duration: Oct 9 2022Oct 13 2022

Publication series

NameECS Transactions
Number9
Volume109
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference242nd ECS Meeting
Country/TerritoryUnited States
CityAtlanta
Period10/9/2210/13/22

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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