Electrochemical synthesis and properties of CoO2, the x=0 phase of the AxCoO2 systems (A=Li,Na)

被引：10

作者：

Motohashi, T. ^{[1
]}

Ono, T. ^{[1
,2
]}

Katsumata, Y. ^{[1
,2
]}

Kanno, R. ^{[2
]}

Karppinen, M. ^{[1
,3
]}

Yamauchi, H. ^{[1
,2
,3
]}

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[2] Tokyo Inst Technol, Interdisciplinary Grad Sci & Engn, Yokohama, Kanagawa 2268502, Japan

[3] Helsinki Univ Technol, Inorgan & Analyt Chem Lab, FI-02015 Helsinki, Finland

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期

关键词：

D O I：

10.1063/1.2828525

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-phase bulk samples of the "exotic" CoO2, the x=0 phase of the A(x)CoO(2) 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(-3) emu/mol Oe, 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. (C) 2008 American Institute of Physics.

引用

页数：3

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