Charge–discharge properties of a layered-type Li(Ni,Co,Ti)O2 powder library

Abstract

A powder library of layered Li(Ni,Co,Ti)O2 (Ni ≤ 0.8, Ti ≤ 0.2) compounds was prepared by electrostatic spray deposition. From powder x-ray diffraction patterns, most of the powder library sintered at 700 C was indexed as a single phase belonging to the space group R-3m. These results were almost identical to those obtained from a study by combinatorial exploration. We investigated the charge–discharge characteristics of the Li(Ni,Co,Ti)O2 powder library in a voltage range from 4.2 to 2.8 V at 1 C and found favorable cycling properties in the LiNixCo0.9-xTi0.1O2 (0 ≤x ≤ 0.6) compounds.