Published May 2018 | Version v1
Journal article Metadata-only

Pt-based alloy nanoparticles embedded electrospun porous carbon nanofibers as electrocatalysts for Methanol oxidation reaction

Creators

  • 1. State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology (China)
  • 2. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF (United Kingdom)
  • 3. School of Food Science, Guangdong Pharmaceutical University, Zhong Shan, 528458 (China)

Description

Highlights: • Porous-structured nanofibers were synthesized. • Excellent electrocatalytic stability. • Superior sensitivity for methanol. Pt-based alloy nanoparticles/porous-structured nanofibers nanocomposites, Pt-Ni/pCNFs and Pt-Ag-Ni/pCNFs, were successfully prepared via electrospinning, dip-molding, carbonization and replacement reaction as electrocatalysts for methanol oxidation reaction (MOR). The alloy nanoparticles with average diameter of 180 nm were uniformly embedded on the surface of pCNFs. Taking advantages of the three factors alloy system and porous nanofiber structure, Pt-Ag-Ni/pCNFs catalyst exhibits the higher electrocatalytic activity for methanol (the maximum current density is ca. 19.6 mA cm−2) than that of Pt-Ni/pCNFs. In addition, Pt-Ag-Ni/pCNFs also shows an excellent electrocatalytic stability of methanol and superior sensitivity for methanol (0.0022 mA cm-2 mM-1). A proposed mechanism of Pt-Ag-Ni/pCNFs for MOR was proposed in the research. This research could provide a novel strategy for the preparation of MOR electrocatalysts.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jallcom.2018.03.003

Additional details

Identifiers

DOI
10.1016/j.jallcom.2018.03.003;
PII
S0925838818308545;

Publishing Information

Journal Title
Journal of Alloys and Compounds
Journal Volume
747
Journal Page Range
p. 978-988
ISSN
0925-8388
CODEN
JALCEU

INIS

Country of Publication
Switzerland
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54012859
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALLOY SYSTEMS; ALLOYS; CARBONIZATION; CURRENT DENSITY; DIRECT METHANOL FUEL CELLS; ELECTROCATALYSTS; NANOCOMPOSITES; NANOFIBERS; NANOPARTICLES; OXIDATION; POROUS MATERIALS; SENSITIVITY; STABILITY
Descriptors DEC
ALCOHOL FUEL CELLS; CATALYSTS; CHEMICAL REACTIONS; DECOMPOSITION; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FUEL CELLS; MATERIALS; NANOMATERIALS; NANOSTRUCTURES; PARTICLES

Optional Information

Copyright
Copyright (c) 2018 Elsevier B.V. All rights reserved.