Synthesis and Properties of CoO2, the x = 0 End Member of the LixCoO2 and NaxCoO2 Systems
Source abstract
Abstract
We report here the synthesis of single-phase bulk samples of CoO 2, the x = 0 end member of the A x CoO 2 systems (A = Li, Na), from a pristine LiCoO 2 sample using an electrochemical technique to completely de-intercalate lithium. Thus, synthesized CoO 2 samples were found to be oxygen-stoichiometric and possess a crystal structure consisting of stacked triangular-lattice CoO 2 layers only. The magnetic susceptibility of the CoO 2 sample was revealed to be relatively large in its initial value and then level off as the temperature increases, suggesting that CoO 2 is a Pauli-paramagnetic metal with itinerant electrons.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Advanced Thermoelectric Materials and Devices · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan, and Laboratory of Inorganic and Analytical Chemistry, Helsinki University of Technology, P.O. Box 6100, FI-02015 TKK, Helsinki, Finland
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