Materials Data on LiNiO2 by Materials Project

Abstract

LiNiO2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two equivalent NiO6 octahedra, corners with four equivalent LiO6 octahedra, edges with four equivalent LiO6 octahedra, and edges with eight equivalent NiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. There are four shorter (2.03 Å) and two longer (2.30 Å) Li–O bond lengths. Ni3+ is bonded to six O2- atoms to form NiO6 octahedra that share corners with two equivalent LiO6 octahedra, corners with four equivalent NiO6 octahedra, edges with four equivalent NiO6 octahedra, and edges with eight equivalent LiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. There is two shorter (1.93 Å) and four longer (2.03 Å) Ni–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent Li1+ and three equivalent Ni3+ atoms to form a mixture of edge and corner-sharing OLi3Ni3 octahedra. The corner-sharing octahedra tilt angles range from 0–10°. In the second O2- site, O2- is bonded to three equivalent Li1+ and three equivalent Ni3+ atoms to form a mixture of edge and corner-sharing OLi3Ni3 octahedra. The corner-sharing octahedra tilt angles range from 0–10°.