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; Uetake, Yuta; Nagai, Takaaki; Monden, Ryuji; Ishihara, Akimitsu; Nakagawa, Takashi

doi:https://doi.org/10.1007/s10853-025-10620-3

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

アクセス数:852件（2025-07-19 11:13 集計）

固定URL: https://hdl.handle.net/11094/100334

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タイトル	Synthesis and characterization of zirconium oxide-based catalysts for the oxygen reduction reaction via the heat treatment of zirconium polyacrylate in an ammonia atmosphere
著者	著者名 Ueno, Atsuhiro
	NRID 1000090432517 1000090432517 researchmap permalink SatoshiSeino SatoshiSeino Scopus Author ID 7102254334 7102254334 ORCID 0000-0002-3770-5667 0000-0002-3770-5667 著者名 Seino, Satoshi
	著者名 Tamaki, Yushi
	NRID 1000010755440 1000010755440 ORCID 0000-0002-4742-8085 0000-0002-4742-8085 researchmap permalink yutauetake yutauetake Scopus Author ID 56417952700 56417952700 著者名 Uetake, Yuta
	著者名 Nagai, Takaaki
	著者名 Monden, Ryuji
	NRID 1000030754006 1000030754006 著者名 Ishihara, Akimitsu
	NRID 1000070273589 1000070273589 researchmap permalink read0051696 read0051696 Scopus Author ID 55507554600 55507554600 著者名 Nakagawa, Takashi
内容	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.
抄録	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.
出版者	Springer Science and Business Media LLC
収録物名	Journal of Materials Science
巻(号)	60
ページ	2774-2785
刊行年月	2025-02-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/100334
PISSN	00222461
eISSN	15734803
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1007/s10853-025-10620-3
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Journal of Materials Science. 2025, 60, p. 2774-2785
DC.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
DC.creator	Ueno, Atsuhiro
	Seino, Satoshi
	Tamaki, Yushi
	Uetake, Yuta
	Nagai, Takaaki
	Monden, Ryuji
	Ishihara, Akimitsu
	Nakagawa, Takashi
DC.publisher	Springer Science and Business Media LLC
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-02-01
DC.identifier	https://doi.org/10.1007/s10853-025-10620-3
DC.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.
DCTERMS.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.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	100334
citation_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
citation_author	Ueno, Atsuhiro
	Seino, Satoshi
	Tamaki, Yushi
	Uetake, Yuta
	Nagai, Takaaki
	Monden, Ryuji
	Ishihara, Akimitsu
	Nakagawa, Takashi
citation_publisher	Springer Science and Business Media LLC
citation_language	英語
citation_date	2025-02-01
citation_journal_title	Journal of Materials Science
citation_volume	60
citation_firstpage	2774
citation_lastpage	2785
citation_doi	https://doi.org/10.1007/s10853-025-10620-3
citation_public_url	https://hdl.handle.net/11094/100334

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

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