The Influence of Al Doping on the Structure of Li(AlyCo1-y)O2 Materials

Abstract

Abstract: X-ray diffraction for Li(Al_y Co_1-y )O₂ was carried out for different values of y(y =0, 0.1—1). The structural evolution of the material with y was revealed. It is shown that material is in single layered phase for y ≤0.5; in double phases [Li(Al_y Co_1-y )O₂ and γ-LiAlO₂] for 0.6≤ y ≤0.9 and single [ γ-LiAlO₂] phase for y =1. The highest solubility for the Al doping is about 50%. Lattice constant a decreases, and lattice constant c increases, respectively, within the region of Al doping for y ≤0.5.

Key words: Cathode materials for lithium batteries, XRD, Structure, Li(Al_y Co_1-y )O₂

CLC Number:

O614

TrendMD:

HAO Wan Jun, CHEN Gang, SHI Yan Hui . The Influence of Al Doping on the Structure of Li(Al_yCo_1-y)O₂ Materials[J]. Chem. J. Chinese Universities, 2001, 22(2): 175.

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The Influence of Al Doping on the Structure of Li(Al_yCo_1-y)O₂ Materials

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