Pt/Tin Oxide/Carbon nanocomposites as promising oxygen reduction electrocatalyst with improved stability and activity

Na Zhang; Sheng Zhang; Chunyu Du; Zhenbo Wang; Yuyan Shao; Fandong Kong; Yuehe Lin; Geping Yin

doi:10.1016/j.electacta.2013.11.139

Pt/Tin Oxide/Carbon nanocomposites as promising oxygen reduction electrocatalyst with improved stability and activity

Na Zhang
, Sheng Zhang
, Chunyu Du
, Zhenbo Wang
, Yuyan Shao
, Fandong Kong
, Yuehe Lin
, Geping Yin^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Pacific Northwest National Laboratory
Washington State University

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

In this report, a novel nanostructural Pt/SnO₂/C catalyst was synthesized by depositing Pt nanoparticles on the SnO₂/C surface. X-Ray Diffraction and Transmission Electron Microscopy characterizations showed that Pt nanoparticles with an average size of ∼2.7 nm were uniformly dispersed on the Pt/SnO₂/C catalysts. High Resolution Transmission Electron Microscopy images revealed that Pt nanoparticles were bonded with both SnO₂ and C at the SnO₂/C junctions, forming Pt/SnO ₂/C triple junction nanostructures in Pt/SnO₂/C catalysts. Electrochemical measurements showed that specific activity towards oxygen reduction reaction (ORR) of Pt/SnO₂/C catalysts was 2.3 times as high as that of conventional Pt/C catalysts. Accelerated degradation test (ADT) indicated that electrochemical stability of Pt/SnO₂/C was twice as high as that of conventional Pt/C catalysts. The improved performance can be attributed to the presence of Pt/SnO₂/C triple junction nanostructures, in which Pt nanoparticles were thermodynamically favored to deposit at the SnO₂/C junctions, and then be anchored simultaneously by both SnO₂ and C.

Original language	English
Pages (from-to)	413-419
Number of pages	7
Journal	Electrochimica Acta
Volume	117
DOIs	https://doi.org/10.1016/j.electacta.2013.11.139
State	Published - 20 Jan 2014
Externally published	Yes

Keywords

Fuel cel ls
Oxygen reduction reaction
Pt nanoparticles
Pt/SnO/C triple junction nanostructures
Stability

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10.1016/j.electacta.2013.11.139

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title = "Pt/Tin Oxide/Carbon nanocomposites as promising oxygen reduction electrocatalyst with improved stability and activity",

abstract = "In this report, a novel nanostructural Pt/SnO2/C catalyst was synthesized by depositing Pt nanoparticles on the SnO2/C surface. X-Ray Diffraction and Transmission Electron Microscopy characterizations showed that Pt nanoparticles with an average size of ∼2.7 nm were uniformly dispersed on the Pt/SnO2/C catalysts. High Resolution Transmission Electron Microscopy images revealed that Pt nanoparticles were bonded with both SnO2 and C at the SnO2/C junctions, forming Pt/SnO 2/C triple junction nanostructures in Pt/SnO2/C catalysts. Electrochemical measurements showed that specific activity towards oxygen reduction reaction (ORR) of Pt/SnO2/C catalysts was 2.3 times as high as that of conventional Pt/C catalysts. Accelerated degradation test (ADT) indicated that electrochemical stability of Pt/SnO2/C was twice as high as that of conventional Pt/C catalysts. The improved performance can be attributed to the presence of Pt/SnO2/C triple junction nanostructures, in which Pt nanoparticles were thermodynamically favored to deposit at the SnO2/C junctions, and then be anchored simultaneously by both SnO2 and C.",

keywords = "Fuel cel ls, Oxygen reduction reaction, Pt nanoparticles, Pt/SnO/C triple junction nanostructures, Stability",

author = "Na Zhang and Sheng Zhang and Chunyu Du and Zhenbo Wang and Yuyan Shao and Fandong Kong and Yuehe Lin and Geping Yin",

year = "2014",

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day = "20",

doi = "10.1016/j.electacta.2013.11.139",

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TY - JOUR

T1 - Pt/Tin Oxide/Carbon nanocomposites as promising oxygen reduction electrocatalyst with improved stability and activity

AU - Zhang, Na

AU - Zhang, Sheng

AU - Du, Chunyu

AU - Wang, Zhenbo

AU - Shao, Yuyan

AU - Kong, Fandong

AU - Lin, Yuehe

AU - Yin, Geping

PY - 2014/1/20

Y1 - 2014/1/20

N2 - In this report, a novel nanostructural Pt/SnO2/C catalyst was synthesized by depositing Pt nanoparticles on the SnO2/C surface. X-Ray Diffraction and Transmission Electron Microscopy characterizations showed that Pt nanoparticles with an average size of ∼2.7 nm were uniformly dispersed on the Pt/SnO2/C catalysts. High Resolution Transmission Electron Microscopy images revealed that Pt nanoparticles were bonded with both SnO2 and C at the SnO2/C junctions, forming Pt/SnO 2/C triple junction nanostructures in Pt/SnO2/C catalysts. Electrochemical measurements showed that specific activity towards oxygen reduction reaction (ORR) of Pt/SnO2/C catalysts was 2.3 times as high as that of conventional Pt/C catalysts. Accelerated degradation test (ADT) indicated that electrochemical stability of Pt/SnO2/C was twice as high as that of conventional Pt/C catalysts. The improved performance can be attributed to the presence of Pt/SnO2/C triple junction nanostructures, in which Pt nanoparticles were thermodynamically favored to deposit at the SnO2/C junctions, and then be anchored simultaneously by both SnO2 and C.

AB - In this report, a novel nanostructural Pt/SnO2/C catalyst was synthesized by depositing Pt nanoparticles on the SnO2/C surface. X-Ray Diffraction and Transmission Electron Microscopy characterizations showed that Pt nanoparticles with an average size of ∼2.7 nm were uniformly dispersed on the Pt/SnO2/C catalysts. High Resolution Transmission Electron Microscopy images revealed that Pt nanoparticles were bonded with both SnO2 and C at the SnO2/C junctions, forming Pt/SnO 2/C triple junction nanostructures in Pt/SnO2/C catalysts. Electrochemical measurements showed that specific activity towards oxygen reduction reaction (ORR) of Pt/SnO2/C catalysts was 2.3 times as high as that of conventional Pt/C catalysts. Accelerated degradation test (ADT) indicated that electrochemical stability of Pt/SnO2/C was twice as high as that of conventional Pt/C catalysts. The improved performance can be attributed to the presence of Pt/SnO2/C triple junction nanostructures, in which Pt nanoparticles were thermodynamically favored to deposit at the SnO2/C junctions, and then be anchored simultaneously by both SnO2 and C.

KW - Fuel cel ls

KW - Oxygen reduction reaction

KW - Pt nanoparticles

KW - Pt/SnO/C triple junction nanostructures

KW - Stability

UR - https://www.scopus.com/pages/publications/84891602710

U2 - 10.1016/j.electacta.2013.11.139

DO - 10.1016/j.electacta.2013.11.139

M3 - 文章

AN - SCOPUS:84891602710

SN - 0013-4686

VL - 117

SP - 413

EP - 419

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Pt/Tin Oxide/Carbon nanocomposites as promising oxygen reduction electrocatalyst with improved stability and activity

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Keywords

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