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Highly Stable PEMFC Electrodes Based on Electrospun Antimony‐Doped SnO 2
Author(s) -
Cavaliere Sara,
JiménezMorales Ignacio,
Ercolano Giorgio,
Savych Iuliia,
Jones Deborah,
Rozière Jacques
Publication year - 2015
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201500330
Subject(s) - materials science , antimony oxide , proton exchange membrane fuel cell , electrocatalyst , antimony , electrospinning , platinum , tin oxide , electrochemistry , oxide , calcination , catalysis , chemical engineering , electrode , tin , carbon fibers , inorganic chemistry , composite material , chemistry , metallurgy , composite number , polymer , engineering , biochemistry
High durability and activity for the oxygen reduction reaction were demonstrated for oxide‐supported platinum catalysts. The supports were antimony‐doped SnO 2 (ATO) fibres‐in‐tubes obtained by electrospinning and subsequent calcination. The doping with antimony instead of the already‐reported niobium, allowed the preparation of tin oxide with electrical conductivity that was similar to carbon, which also had an increased electrocatalyst loading. Platinum nanoparticles supported on electrospun ATO demonstrated higher electrochemical stability and comparable mass activity to commercial Pt/C during ex situ potential cycling. The in situ fuel cell tests also revealed improved corrosion resistance with no noticeable degradation of the oxide‐based membrane electrode assembly (MEA), but a slightly lower performance compared to the MEA with carbon‐supported catalysts.