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Ordered SnO2@C Flake Array as Catalyst Support for Improved Electrocatalytic Activity and Cathode Durability in PEMFCs Yang, Zhaoyi; Chen, Ming; Fang, Baizeng; Liu, Gaoyang

Abstract

Pt-SnO₂@C-ordered flake array was developed on carbon paper (CP) as an integrated cathode for proton exchange membrane fuel cell through a facile hydrothermal method. In the integrated cathode, Pt nanoparticles were deposited uniformly with a small particle size on the SnO₂@C/CP support. Electrochemical impedance spectroscopy analysis revealed lower impedance in a potential range of 0.3–0.5 V for the ordered electrode structure. An electrochemically active surface area and oxygen reduction peak potential determined by cyclic voltammetry measurement verified the synergistic effect between Pt and SnO₂, which enhanced the electrochemical catalytic activity. Besides, compared with the commercial carbon-supported Pt catalyst, the as-developed SnO₂@C/CP-supported Pt catalyst demonstrated better stability, most likely due to the positive interaction between SnO₂ and the carbon coating layer.

Item Metadata

Title
Ordered SnO2@C Flake Array as Catalyst Support for Improved Electrocatalytic Activity and Cathode Durability in PEMFCs
Creator
Yang, Zhaoyi; Chen, Ming; Fang, Baizeng; Liu, Gaoyang
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2020-12-02
Description
Pt-SnO₂@C-ordered flake array was developed on carbon paper (CP) as an integrated cathode for proton exchange membrane fuel cell through a facile hydrothermal method. In the integrated cathode, Pt nanoparticles were deposited uniformly with a small particle size on the SnO₂@C/CP support. Electrochemical impedance spectroscopy analysis revealed lower impedance in a potential range of 0.3–0.5 V for the ordered electrode structure. An electrochemically active surface area and oxygen reduction peak potential determined by cyclic voltammetry measurement verified the synergistic effect between Pt and SnO₂, which enhanced the electrochemical catalytic activity. Besides, compared with the commercial carbon-supported Pt catalyst, the as-developed SnO₂@C/CP-supported Pt catalyst demonstrated better stability, most likely due to the positive interaction between SnO₂ and the carbon coating layer.
Subject
SnO2@C; ordered flake array; carbon paper; integrated cathode; proton exchange membrane fuel cell; electrocatalytic activity; cathode durability
Genre
Article
Type
Text
Language
eng
Date Available
2021-01-06
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0395472
URI
http://hdl.handle.net/2429/76985
Affiliation
Applied Science, Faculty of; Non UBC; Chemical and Biological Engineering, Department of
Citation
Nanomaterials 10 (12): 2412 (2020)
Publisher DOI
10.3390/nano10122412
Peer Review Status
Reviewed
Scholarly Level
Faculty
Rights URI
https://creativecommons.org/licenses/by/4.0/
Aggregated Source Repository
DSpace

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CC BY 4.0