論文

査読有り
2020年

Noncrystalline Nanocomposites as a Remedy for the Low Diffusivity of Multivalent Ions in Battery Cathodes

Chemistry of Materials
  • Orikasa, Y.
  • Kisu, K.
  • Iwama, E.
  • Naoi, W.
  • Yamaguchi, Y.
  • Yamaguchi, Y.
  • Okita, N.
  • Ohara, K.
  • Munesada, T.
  • Hattori, M.
  • Yamamoto, K.
  • Rozier, P.
  • Simon, P.
  • Naoi, K.
  • 全て表示

32
3
開始ページ
1011
終了ページ
1021
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.chemmater.9b03665
出版者・発行元
American Chemical Society ({ACS})

Rechargeable batteries using multivalent metals are among the most promising next-generation battery systems due to their high capacity, high safety, and low cost compared with lithium-ion batteries. However, strong cation anion interaction degrades diffusion in solid cathodes, an effect that must be mitigated to yield practical multivalent metal batteries. We show that a highly defective iron phosphate carbon composite prepared by ultracentrifugation serves as a reversible insertion/deinsertion for magnesium ions with, and operates beyond, a 2-V cell voltage at room temperature. A composite of noncrystalline particles that embeds the surrounding carbon structure enhances the magnesium-ion diffusion in the solid phase with stability for cycle life. X-ray absorption spectroscopy, transmission electron microscopy with energy-dispersive X-ray spectroscopy, and high-energy X-ray scattering measurements demonstrate magnesium-ion insertion and extraction in the defective iron phosphate without conversion reactions. This work suggests promising applications for highly defective structures as intercalation hosts for multivalent ions.

リンク情報
DOI
https://doi.org/10.1021/acs.chemmater.9b03665
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000513299400008&DestApp=WOS_CPL
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-85080052348&partnerID=MN8TOARS
ID情報
  • DOI : 10.1021/acs.chemmater.9b03665
  • ISSN : 0897-4756
  • eISSN : 1520-5002
  • ORCIDのPut Code : 73580711
  • SCOPUS ID : 85080052348
  • Web of Science ID : WOS:000513299400008

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