Temperature-dependent structural behavior of mixed-metal hydroxides in air

Yun Hee Lee, Ki Bok Kim, D. H. Gregory, Yong Il Kim

研究成果: Contribution to journalArticle査読

抄録

Abstract A co-precipitation process using transition metal hydrates was used to prepare a mixture of M(OH)2 and MO(OH) (M=Ni0.5Co0.2Mn0.3). This powder consisted of dense, quasi-spherical particles each composed of plate-like particles of ca. 250 nm across. By increasing the temperature, M(OH)2 was made to transform into MO(OH) at ca. 220 °C, then into M3O4 at ca. 330 °C. Moreover, the M3O4 phase persisted without further reaction until 700 °C. During these phase transitions, the mixed-metal (M) in M(OH)2, MO(OH) and M3O4 retained disordered cation distributions at the same crystallographic sites of their host lattices without appearance of any phases related to Ni, Co and Mn. The MO(OH) phase appeared owing to exposure to air. M(OH)2 at room temerature had the lattice parameters (a=b=2.9991(2) Å and c=8.5892(2) Å) with space group (3¯P63/mmc).

本文言語英語
論文番号18613
ページ(範囲)104-108
ページ数5
ジャーナルMaterials Letters
151
DOI
出版ステータス出版済み - 7 15 2015

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント 「Temperature-dependent structural behavior of mixed-metal hydroxides in air」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル