Published September 20, 2014 | Version v1
Journal article Metadata-only

SnO2-embedded worm-like carbon nanofibers supported Pt nanoparticles for oxygen reduction reaction

Creators

  • 1. State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 (China)
  • 2. College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070 (China)
  • 3. South African Institute for Advanced Materials Chemistry, University of the Western Cape, Cape Town 7535 (South Africa)

Description

We report SnO2-embedded worm-like carbon nitride nanofibers (SnO2-CNx) as support for Pt nanoparticles, which show a significant enhancement in catalytic activity for the oxygen reduction reaction (ORR). Transmission electron microscopy (TEM) results show that Pt nanoparticles are uniformly distributed on the surface of SnO2-CNx. A strong interaction between metal nanoparticles and support in Pt/SnO2-CNx was confirmed by X-ray photoelectron spectroscopy, which could change the electronic structure of Pt atoms. The synthesized Pt/SnO2-CNx exhibits superior catalytic activity and stability in ORR. The activity of commercial Pt/C lost about 16.9% and Pt/C-CNx 11.8% after 5000 electrochemical cycles. In contract, the Pt/SnO2-CNx only lost less than 5% in ORR activity. The significantly improved activity and stability of Pt/SnO2-CNx are resulted from the modification of Pt electronic structure and strong interactions between Pt nanopartiles and SnO2-CNx

Availability note (English)

Available from http://dx.doi.org/10.1016/j.electacta.2014.07.020

Additional details

Identifiers

DOI
10.1016/j.electacta.2014.07.020;
PII
S0013-4686(14)01398-X;

Publishing Information

Journal Title
Electrochimica Acta
Journal Volume
141
Journal Page Range
p. 13-19
ISSN
0013-4686
CODEN
ELCAAV

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47002351
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CARBON FIBERS; CARBON NITRIDES; CATALYSTS; DOPED MATERIALS; ELECTROCHEMISTRY; ELECTRONIC STRUCTURE; NANOFIBERS; NANOPARTICLES; NITROGEN; OXYGEN; PLATINUM; REDUCTION; TIN OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
CARBON COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; CHEMISTRY; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; ELEMENTS; FIBERS; MATERIALS; METALS; MICROSCOPY; NANOSTRUCTURES; NITRIDES; NITROGEN COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PARTICLES; PHOTOELECTRON SPECTROSCOPY; PLATINUM METALS; PNICTIDES; SPECTROSCOPY; TIN COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.