Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Li-Nb-O-W”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

5 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on LiNbWO6 by Materials Project

LiNbWO6 is beta Vanadium nitride-derived structured and crystallizes in the trigonal R3 space group. The structure is three-dimensional. Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.07 Å) and three longer (2.41 Å) Li–O bond lengths. Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 28–37°. There are three shorter (1.90 Å) and three longer (2.14 Å) Nb–O bond lengths. W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six equivalent NbO6 octahedra. The corner-sharing octahedra tilt angles range from 28–37°. There is three shorter (1.89 Å) and three longer (2.02 Å) W–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Nb5+, and one W6+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Nb5+, and one W6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiNbWO6 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Nb2W2O13 by Materials Project

Li2Nb2W2O13 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. Li is bonded in a 4-coordinate geometry to four O atoms. There are a spread of Li–O bond distances ranging from 2.04–2.40 Å. Nb is bonded to six O atoms to form NbO6 octahedra that share corners with two equivalent NbO6 octahedra and corners with four equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 30–56°. There are a spread of Nb–O bond distances ranging from 1.90–2.13 Å. W is bonded to six O atoms to form WO6 octahedra that share corners with two equivalent WO6 octahedra and corners with four equivalent NbO6 octahedra. The corner-sharing octahedra tilt angles range from 29–41°. There are a spread of W–O bond distances ranging from 1.88–2.01 Å. There are seven inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Nb and one W atom. In the second O site, O is bonded in a bent 150 degrees geometry to two equivalent W atoms. In the third O site, O is bonded in a tetrahedral geometry to two equivalent Li and two equivalent Nb atoms. In the fourth O site, O is bonded in a distorted trigonal planar geometry to one Li, one Nb, and one W atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to two equivalent W atoms. In the sixth O site, O is bonded in a bent 150 degrees geometry to two equivalent Nb atoms. In the seventh O site, O is bonded in a bent 150 degrees geometry to two equivalent Li atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiNbWO7 by Materials Project

Li2O2(NbWO6)2 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional and consists of two Li2O2 ribbons oriented in the (1, 0, 0) direction and one NbWO6 framework. In each Li2O2 ribbon, Li is bonded in a linear geometry to two equivalent O atoms. Both Li–O bond lengths are 1.90 Å. O is bonded in a bent 150 degrees geometry to two equivalent Li atoms. In the NbWO6 framework, Nb is bonded to six O atoms to form NbO6 octahedra that share corners with two equivalent NbO6 octahedra and corners with four equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 37–44°. There are four shorter (1.99 Å) and two longer (2.03 Å) Nb–O bond lengths. W is bonded to six O atoms to form WO6 octahedra that share corners with two equivalent WO6 octahedra and corners with four equivalent NbO6 octahedra. The corner-sharing octahedra tilt angles range from 35–37°. There is four shorter (1.94 Å) and two longer (1.95 Å) W–O bond length. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Nb and one W atom. In the second O site, O is bonded in a bent 150 degrees geometry to two equivalent W atoms. In the third O site, O is bonded in a distorted bent 150 degrees geometry to two equivalent Nb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiNbWO6 by Materials Project

LiNbWO6 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Li1+ is bonded in a hexagonal planar geometry to six O2- atoms. There are two shorter (2.59 Å) and four longer (2.65 Å) Li–O bond lengths. Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with two equivalent NbO6 octahedra and corners with four equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 40–48°. There are four shorter (2.00 Å) and two longer (2.01 Å) Nb–O bond lengths. W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent WO6 octahedra and corners with four equivalent NbO6 octahedra. The corner-sharing octahedra tilt angles range from 35–40°. There is four shorter (1.93 Å) and two longer (1.95 Å) W–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Nb5+, and one W6+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent W6+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+ and two equivalent Nb5+ atoms.

36 MATERIALS SCIENCE↗