Materials Data on Li4FeNi3O8 by Materials Project
LiFeO2(LiNiO2)3 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of one LiFeO2 ribbon oriented in the (0, 1, 1) direction and three LiNiO2 ribbons oriented in the (0, 1, 1) direction. In the LiFeO2 ribbon, Li1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Li–O bond lengths are 1.49 Å. Fe3+ is bonded in a distorted linear geometry to two equivalent O2- atoms. Both Fe–O bond lengths are 1.47 Å. O2- is bonded in a distorted linear geometry to one Li1+ and one Fe3+ atom. In each LiNiO2 ribbon, Li1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Li–O bond lengths are 1.58 Å. Ni3+ is bonded in a linear geometry to two equivalent O2- atoms. Both Ni–O bond lengths are 1.43 Å. O2- is bonded in a distorted bent 150 degrees geometry to one Li1+ and one Ni3+ atom.