Abstract
Single-phase bulk samples of the “exotic” CoO2, the x=0 phase of the AxCoO2 systems (A=Li,Na), were successfully synthesized through electrochemical deintercalation of Li from pristine LiCoO2 samples. The samples of pure CoO2 were found to be essentially oxygen stoichiometric and possess a hexagonal structure consisting of stacked triangular-lattice CoO2 layers only. The magnetism of CoO2 is featured with a temperature-independent susceptibility of the magnitude of 10−3emu/molOe, being essentially identical to that of a Li-doped phase, Li0.12CoO2. It is most likely that the CoO2 phase is a Pauli-paramagnetic metal with itinerant electrons.
Original language | English |
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Article number | 07C902 |
Pages (from-to) | 1-3 |
Journal | Journal of Applied Physics |
Volume | 103 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2008 |
MoE publication type | A1 Journal article-refereed |