On “Really” Stoichiometric LiCoO[sub 2]
- 1 January 2008
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 11 (11), A179-A182
- https://doi.org/10.1149/1.2968953
Abstract
The NMR spin-lattice relaxation time is shown to be a very stringent criterion for determining the stoichiometry of . When containing a minimum impurity level of paramagnetic ions such as Fe or Ni is used as the starting material (together with ), a value as long as is obtained, but this requires a rather long thermal treatment for complete elimination of excess Li. Such highly stoichiometric exhibits a very early insulator to metal transition upon Li deintercalation. Magnetic susceptibility and specific heat capacity investigations show the exclusive presence of diamagnetic low-spin (LS) .Keywords
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