論文

査読有り
2018年6月

Preparation of lanthanum silicate electrolyte with high conductivity and high chemical stability

SOLID STATE IONICS
  • Atsushi Mineshige
  • ,
  • Hikaru Hayakawa
  • ,
  • Takuma Nishimoto
  • ,
  • Akie Heguri
  • ,
  • Tetsuo Yazawa
  • ,
  • Yuki Takayama
  • ,
  • Yasushi Kagoshima
  • ,
  • Hidekazu Takano
  • ,
  • Shingo Takeda
  • ,
  • Junji Matsui

319
開始ページ
223
終了ページ
227
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.ssi.2018.02.002
出版者・発行元
ELSEVIER SCIENCE BV

Effects of dopant content and synthesis temperature on phase relations and conducting behavior of lanthanum silicate, La9.33+xSi6O26+1.5x (LSO) electrolytes were investigated. The La-excess-type Fe-doped LSO, La-10(Si5.5Fe0.5)O-26.75 synthesized at 1973 K showed lower grain boundary as well as grain interior resistances, and then, had high total conductivity (6.9 x 10(-3) S cm(-1) at 873 K and 3.6 x 10(-5) S cm(-1) at 573 K). In addition, the chemical instability owing to a high lanthanum activity in the La-excess-type LSO (x = 0.67) specimen could be eliminated by incorporating iron into the specimen. The synchrotron radiation microbeam X-ray diffraction technique revealed that this specimen contains a small amount of new secondary phase, which differs from the situation found in a highly conductive but chemically unstable Al-doped LSO specimen with the same x value and the same synthesis temperature.

Web of Science ® 被引用回数 : 3

リンク情報
DOI
https://doi.org/10.1016/j.ssi.2018.02.002
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000432505300031&DestApp=WOS_CPL
Scopus Url
http://www.scopus.com/inward/record.url?eid=2-s2.0-85042176125&partnerID=MN8TOARS
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85042176125&origin=inward

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