Synthesis and characterization of zirconium oxide-based catalysts for the oxygen reduction reaction via the heat treatment of zirconium polyacrylate in an ammonia atmosphere

Ueno, Atsuhiro; Seino, Satoshi; Tamaki, Yushi et al.

Journal of Materials Science, 2025, 60, 2774-2785

Number of Access:876（2025-07-31 17:05 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/100334

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Title
Synthesis and characterization of zirconium oxide-based catalysts for the oxygen reduction reaction via the heat treatment of zirconium polyacrylate in an ammonia atmosphere
Creator
CreatorName
Ueno, Atsuhiro
NRID
1000090432517 1000090432517
researchmap permalink
SatoshiSeino SatoshiSeino
Scopus Author ID
7102254334 7102254334
ORCID
0000-0002-3770-5667 0000-0002-3770-5667
CreatorName
Seino, Satoshi
CreatorName
Tamaki, Yushi
NRID
1000010755440 1000010755440
ORCID
0000-0002-4742-8085 0000-0002-4742-8085
researchmap permalink
yutauetake yutauetake
Scopus Author ID
56417952700 56417952700
CreatorName
Uetake, Yuta
CreatorName
Nagai, Takaaki
CreatorName
Monden, Ryuji
NRID
1000030754006 1000030754006
CreatorName
Ishihara, Akimitsu
NRID
1000070273589 1000070273589
researchmap permalink
read0051696 read0051696
Scopus Author ID
55507554600 55507554600
CreatorName
Nakagawa, Takashi
Description
The version of record of this article, first published in Journal of Materials Science, is available online at Publisher’s website: https://doi.org/10.1007/s10853-025-10620-3.
Abstract
Zirconium oxide-based catalysts for the oxygen reduction reaction (ORR) in polymer electrolyte fuel cells were synthesized via heat treatment of zirconium polyacrylate in an NH3 atmosphere. The effects of gas atmosphere and heat treatment temperature on the material structure were systematically examined. The formation of zirconium oxide nanoparticles and carbon residues, which act as electron conduction paths, was observed in all samples. The structure of the material varied significantly depending on the heat treatment conditions. The samples heat-treated in the NH3 atmosphere showed greater exposure to zirconium oxide nanoparticles and an increase in the specific surface area of the carbon residue caused by NH3-induced etching. In addition, the conductivity of the carbon residue increased, and its quantity decreased with increasing heat treatment temperature. This trade-off was optimally controlled at 800 °C, which resulted in a high rest potential and a large ORR current density. This study demonstrates that the heat treatment of organometallic complexes in an NH3 atmosphere is highly effective for exposing metal oxide nanoparticles and increasing the specific surface area of the carbon residue, providing valuable insights into the design of electron conduction paths for metal oxide-based catalysts.
Publisher
Springer Science and Business Media LLC
Source Title
Journal of Materials Science
Volume (Issue)
60
Page
2774-2785
Date of Issued
2025-02-01
Language
English
Handle URL
https://hdl.handle.net/11094/100334
PISSN
00222461
eISSN
15734803
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1007/s10853-025-10620-3
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article