論文

査読有り
2018年5月

Striking Oxygen-Release/Storage Properties of Fe-Site-Substituted Sr3Fe2O7-d

JOURNAL OF PHYSICAL CHEMISTRY C
  • Kosuke Beppu
  • ,
  • Saburo Hosokawa
  • ,
  • Akito Demizu
  • ,
  • Yudai Oshino
  • ,
  • Kazuki Tamai
  • ,
  • Kazuo Kato
  • ,
  • Kenji Wada
  • ,
  • Hiroyuki Asakura
  • ,
  • Kentaro Teramura
  • ,
  • Tsunehiro Tanaka

122
21
開始ページ
11186
終了ページ
11193
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.jpcc.7b12754
出版者・発行元
AMER CHEMICAL SOC

The present study explores the oxygen-storage capacity of Sr3Fe2O7-delta doped by other transition metals. Sr3Fe2O7-delta doped with Mn, Co, or Ni exhibited higher oxygen-storage amount and higher oxygen-release/storage rates than Sr3Fe2O7-delta; doping with Mn led to the highest oxygen-release/storage rates. Although reduced Sr-3(Fe0.8Co0.2)(2)O7-delta and Sr-3(Fe0.8Co0.2)(2)O7-delta had disordered coordination states around Fe and the transition-metal dopant, the local structure around the transition metals in the as-synthesized Sr-3(Fe0.8Co0.2)(2)O7-delta was almost kept intact even in the reduced state. These observations reveal that subtle differences in the ordering around transition-metal species before and after lattice-oxygen release significantly affect the oxide ion mobilities in the perovskite structures and also provide guidelines for designing novel oxygen-storage materials.

リンク情報
DOI
https://doi.org/10.1021/acs.jpcc.7b12754
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000434236700002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1021/acs.jpcc.7b12754
  • ISSN : 1932-7447
  • SCOPUS ID : 85046737426
  • Web of Science ID : WOS:000434236700002

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