Author/Authors :
Milewska، نويسنده , , A. and Swierczek، نويسنده , , K. and Tobola، نويسنده , , J. and Boudoire، نويسنده , , F. and Hu، نويسنده , , Y. and Bora، نويسنده , , D.K. and Mun، نويسنده , , B.S. and Braun، نويسنده , , A. and Molenda، نويسنده , , J.، نويسنده ,
Abstract :
In this paper we analyze the nature of the nonmetal–metal transition in the LixCoO2 oxide (0.53 ≤ x ≤ 1) on the basis on the investigations of the structural, transport properties, oxygen K-edge NEXAFS spectroscopy and calculated density of states (DOS). Our investigations show that the stoichiometric Li1CoO2 oxide is a semiconductor, but extraction of the lithium ions leads to the metallic properties of the system. Besides, KKR-CPA showed that the distortion of the oxygen octahedron significantly modifies top valence states. We postulate that the nonmetal–metal transition can be interpreted on the basis on the Anderson type transition.
Keywords :
Li-ion batteries , LiCoO2 , Transport properties , Electronic structure , Oxygen K-edge NEXAFS spectroscopy , Calculated density of states
