Palladium nanoparticles supported on 3D-graphene nanosheets for oxygen reduction reactions in alkaline media

S. Kabir, Alexey Serov, Plamen Atanassov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

The electrochemical reduction of oxygen on palladium nanoparticles supported on 3D-Graphene nanosheets was investigated in alkaline media. The Pd nanoparticles were synthesized using a surfactant-free soft alcohol reduction method (SARM). The 3D-Graphene sheets were given a porous morphology using sacrificial silica templates. Scanning and Transmission electron micrographs showed that Pd nanoparticles of an average size of ~5-6 nm were evenly dispersed on porous 3D-Graphene sheets. Rotating ring disc electrode (RRDE) measurements showed significantly enhanced activity of Pd/3D-Graphene catalysts (4-electron oxygen reductions pathway) compared to Pd/Vulcan. The remarkable performance of the Pd/3D-Graphene catalysts was attributed to their (i) higher degree of graphitization providing efficient charge transfer ability, (ii) good dispersion of nanoparticle (iii) porous network of channels embedded into the 3D-graphene matrix using a sacrificial support method (SSM).

Original languageEnglish
Title of host publicationElectrocatalysis 8
EditorsM. Shao, G. M. Brisard
PublisherElectrochemical Society Inc.
Pages39-47
Number of pages9
Edition29
ISBN (Electronic)9781607687566
ISBN (Print)9781623323981
DOIs
StatePublished - 2016
Externally publishedYes
EventSymposium on Electrocatalysis 8 - 229th ECS Meeting - San Diego, United States
Duration: May 29 2016Jun 2 2016

Publication series

NameECS Transactions
Number29
Volume72
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Electrocatalysis 8 - 229th ECS Meeting
Country/TerritoryUnited States
CitySan Diego
Period05/29/1606/2/16

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