Preparation of superconductive P3 cobalt oxyhydrates Nax(H2O)yCoO2 with three-layered CoO2 using NaMnO4 solution

Ankam Bhaskar, Der Hau Lee, Chia Jyi Liu

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We report the synthesis of the superconductive P3 cobalt oxyhydrates by immersing α-NaCoO2 in aqueous NaMnO4 solution for the first time. It is a novel route to form the superconductive phase of cobalt oxyhydrates without resort to the commonly used Br2/CH3CN solution. Topotactic transformation of the parent compound α-NaCoO2 results in water intercalation and hence a significant expansion of the c-axis in the unit cell. The P3 cobalt oxyhydrates exhibits an onset superconducting transition at about 4.2 K.

Original languageEnglish
Pages (from-to)15-17
Number of pages3
JournalJournal of Electroceramics
Issue number1-4
Publication statusPublished - 2016 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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