SEARCH · Engineering Papers
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.
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
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
Na3CoO3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.32–2.75 Å. In the second Na1+ site, Na1+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.23–2.82 Å. In the third Na1+ site, Na1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Na–O bond distances ranging from 2.35–2.55 Å. Co3+ is bonded to four O2- atoms to form edge-sharing CoO4 tetrahedra. There are a spread of Co–O bond distances ranging from 1.80–1.98 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to four Na1+ and two equivalent Co3+ atoms. In the second O2- site, O2- is bonded in a 7-coordinate geometry to six Na1+ and one Co3+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to four Na1+ and one Co3+ atom.
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
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
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
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
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
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
NaCo2O4 crystallizes in the orthorhombic Amm2 space group. The structure is two-dimensional and consists of one NaCo2O4 sheet oriented in the (0, 0, 1) direction. Na1+ is bonded to six equivalent O2- atoms to form distorted NaO6 pentagonal pyramids that share corners with six equivalent CoO6 octahedra, edges with six equivalent CoO6 octahedra, and edges with six equivalent NaO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 9–12°. There are two shorter (2.36 Å) and four longer (2.38 Å) Na–O bond lengths. Co+3.50+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with three equivalent NaO6 pentagonal pyramids, edges with six equivalent CoO6 octahedra, and edges with three equivalent NaO6 pentagonal pyramids. There are a spread of Co–O bond distances ranging from 1.88–2.16 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent Na1+ and three equivalent Co+3.50+ atoms to form a mixture of edge, corner, and face-sharing ONa3Co3 octahedra. The corner-sharing octahedra tilt angles range from 41–47°. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Co+3.50+ atoms.
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
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
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
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
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
NaCoO2 is Caswellsilverite-like structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form distorted NaO6 pentagonal pyramids that share corners with nine equivalent CoO6 octahedra, edges with three equivalent CoO6 octahedra, edges with six equivalent NaO6 pentagonal pyramids, and a faceface with one CoO6 octahedra. The corner-sharing octahedra tilt angles range from 11–48°. There are three shorter (2.38 Å) and three longer (2.44 Å) Na–O bond lengths. Co3+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with nine equivalent NaO6 pentagonal pyramids, edges with six equivalent CoO6 octahedra, edges with three equivalent NaO6 pentagonal pyramids, and a faceface with one NaO6 pentagonal pyramid. All Co–O bond lengths are 2.05 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to three equivalent Na1+ and three equivalent Co3+ atoms. In the second O2- site, O2- is bonded to three equivalent Na1+ and three equivalent Co3+ atoms to form edge-sharing ONa3Co3 octahedra.
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
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