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DOE OSTI2020

Materials Data on LiFeSiO4 by Materials Project

LiFeSiO4 crystallizes in the trigonal R-3 space group. The structure is two-dimensional and consists of three LiFeSiO4 sheets oriented in the (0, 0, 1) direction. Li1+ is bonded in a distorted trigonal non-coplanar geometry to three equivalent O2- atoms. All Li–O bond lengths are 2.03 Å. Fe3+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four equivalent SiO4 tetrahedra. There is one shorter (1.81 Å) and three longer (1.93 Å) Fe–O bond length. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four equivalent FeO4 tetrahedra. There is one shorter (1.63 Å) and three longer (1.66 Å) Si–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a linear geometry to one Fe3+ and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFeSiO4 by Materials Project

LiFeSiO4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form distorted LiO4 tetrahedra that share corners with six equivalent FeO6 octahedra, corners with two equivalent SiO4 tetrahedra, and an edgeedge with one SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 70–73°. There are two shorter (1.95 Å) and two longer (2.09 Å) Li–O bond lengths. Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six equivalent LiO4 tetrahedra, corners with six equivalent SiO4 tetrahedra, and edges with two equivalent FeO6 octahedra. There are two shorter (1.95 Å) and four longer (2.13 Å) Fe–O bond lengths. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with six equivalent FeO6 octahedra, corners with two equivalent LiO4 tetrahedra, and an edgeedge with one LiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 49–54°. There is two shorter (1.63 Å) and two longer (1.68 Å) Si–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to one Li1+, two equivalent Fe3+, and one Si4+ atom to form a mixture of distorted edge and corner-sharing OLiFe2Si tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFeSiO4 by Materials Project

LiFeSiO4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a trigonal planar geometry to three O2- atoms. All Li–O bond lengths are 1.90 Å. In the second Li1+ site, Li1+ is bonded in a trigonal planar geometry to three O2- atoms. All Li–O bond lengths are 1.90 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra. There is one shorter (1.84 Å) and three longer (1.91 Å) Fe–O bond length. In the second Fe3+ site, Fe3+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra. There is one shorter (1.83 Å) and three longer (1.91 Å) Fe–O bond length. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra. There is one shorter (1.62 Å) and three longer (1.65 Å) Si–O bond length. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a linear geometry to one Fe3+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a linear geometry to one Fe3+ and one Si4+ atom. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2FeSiO4 by Materials Project

Li2FeSiO4 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.95–2.30 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.07 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.07 Å. In the fourth Li1+ site, Li1+ is bonded in a 3-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.95–2.35 Å. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.00–2.07 Å. In the second Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.00–2.07 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four FeO4 tetrahedra. There is one shorter (1.65 Å) and three longer (1.66 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four FeO4 tetrahedra. There is one shorter (1.65 Å) and three longer (1.66 Å) Si–O bond length. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Fe2+, and one Si4+ atom. In the second O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the third O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the fourth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the fifth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the sixth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the seventh O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Fe2+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2FeSiO4 by Materials Project

Li2FeSiO4 is Stannite-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra, corners with four SiO4 tetrahedra, and corners with six LiO4 tetrahedra. There are three shorter (1.99 Å) and one longer (2.05 Å) Li–O bond lengths. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.18 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.18 Å. In the fourth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra, corners with four SiO4 tetrahedra, and corners with six LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.97–2.03 Å. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra, corners with four SiO4 tetrahedra, and corners with six LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.98–2.13 Å. In the second Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra, corners with four SiO4 tetrahedra, and corners with six LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.99–2.12 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.70 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.70 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded to one Li1+, two Fe2+, and one Si4+ atom to form distorted corner-sharing OLiFe2Si tetrahedra. In the second O2- site, O2- is bonded to three Li1+ and one Si4+ atom to form corner-sharing OLi3Si tetrahedra. In the third O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the fourth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the fifth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the sixth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the seventh O2- site, O2- is bonded to three Li1+ and one Si4+ atom to form corner-sharing OLi3Si tetrahedra. In the eighth O2- site, O2- is bonded to one Li1+, two Fe2+, and one Si4+ atom to form distorted corner-sharing OLiFe2Si tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2FeSiO4 by Materials Project

Li2FeSiO4 is Stannite-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eight inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.09 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.04 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.04 Å. In the fourth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.09 Å. In the fifth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.09 Å. In the sixth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.04 Å. In the seventh Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.97–2.04 Å. In the eighth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.09 Å. There are four inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.07 Å. In the second Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.07 Å. In the third Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.07 Å. In the fourth Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.07 Å. There are four inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.65 Å) and two longer (1.66 Å) Si–O bond length. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.65–1.67 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.65–1.67 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the second O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the third O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the fourth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the fifth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the sixth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the seventh O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the eighth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the ninth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the tenth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the eleventh O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the twelfth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the thirteenth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the fourteenth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra. In the fifteenth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the sixteenth O2- site, O2- is bonded to two Li1+, one Fe2+, and one Si4+ atom to form distorted corner-sharing OLi2FeSi tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFeSiO4 by Materials Project

LiFeSiO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four equivalent FeO4 tetrahedra and corners with four equivalent SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.08 Å. Fe3+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four equivalent LiO4 tetrahedra and corners with four equivalent SiO4 tetrahedra. There is two shorter (1.90 Å) and two longer (1.91 Å) Fe–O bond length. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four equivalent LiO4 tetrahedra and corners with four equivalent FeO4 tetrahedra. There is one shorter (1.64 Å) and three longer (1.65 Å) Si–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFeSiO4 by Materials Project

LiFeSiO4 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. Li1+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of Li–O bond distances ranging from 1.93–1.96 Å. Fe3+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four equivalent SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.86–1.91 Å. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four equivalent FeO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one Si4+ atom. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe3+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFeSiO4 by Materials Project

LiFeSiO4 crystallizes in the trigonal R3c space group. The structure is three-dimensional. Li1+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of Li–O bond distances ranging from 1.95–1.98 Å. Fe3+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four equivalent SiO4 tetrahedra. There is one shorter (1.84 Å) and three longer (1.91 Å) Fe–O bond length. Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four equivalent FeO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe3+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Fe5Si5O16 by Materials Project

Li2Fe5Si5O16 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form distorted LiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra and corners with six SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.89–2.65 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent FeO4 tetrahedra and corners with six SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.91–2.36 Å. There are five inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.17 Å. In the second Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.09 Å. In the third Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.00–2.03 Å. In the fourth Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.01–2.07 Å. In the fifth Fe2+ site, Fe2+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with four SiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 2.02–2.07 Å. There are five inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one SiO4 tetrahedra, corners with three LiO4 tetrahedra, and corners with four FeO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.72 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one LiO4 tetrahedra, a cornercorner with one SiO4 tetrahedra, and corners with six FeO4 tetrahedra. There is three shorter (1.64 Å) and one longer (1.69 Å) Si–O bond length. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with four SiO4 tetrahedra. There is three shorter (1.65 Å) and one longer (1.66 Å) Si–O bond length. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share a cornercorner with one LiO4 tetrahedra and corners with seven FeO4 tetrahedra. There is one shorter (1.63 Å) and three longer (1.66 Å) Si–O bond length. In the fifth Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two equivalent SiO4 tetrahedra, corners with three LiO4 tetrahedra, and corners with three FeO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.68 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe2+, and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Fe2+ and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+ and two Si4+ atoms. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe2+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one Si4+ atom. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one Si4+ atom. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two Si4+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe2+ and one Si4+ atom. In the ninth O2- site, O2- is bonded in a trigonal non-coplanar geometry to two Fe2+ and one Si4+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Si4+ atoms. In the eleventh O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one Si4+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+ and two Si4+ atoms. In the thirteenth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe2+, and one Si4+ atom. In the fourteenth O2- site, O2- is bonded in a trigonal planar geometry to two Fe2+ and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Fe2+ and one Si4+ atom. In the sixteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+, one Fe2+, and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li3Fe2(SiO4)2 by Materials Project

Li3Fe2(SiO4)2 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.95–2.17 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with two equivalent LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.93–2.16 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra, corners with four FeO4 tetrahedra, and corners with four SiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.92–2.14 Å. There are two inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra and corners with six LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.98–2.11 Å. In the second Fe+2.50+ site, Fe+2.50+ is bonded to four O2- atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra and corners with six LiO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.87–1.94 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with six LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.63–1.70 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra and corners with six LiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.62–1.71 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded to two Li1+, one Fe+2.50+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe+2.50+, and one Si4+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe+2.50+, and one Si4+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to one Li1+, one Fe+2.50+, and one Si4+ atom. In the fifth O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Li1+, one Fe+2.50+, and one Si4+ atom. In the sixth O2- site, O2- is bonded to two Li1+, one Fe+2.50+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the seventh O2- site, O2- is bonded to two Li1+, one Fe+2.50+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra. In the eighth O2- site, O2- is bonded to two Li1+, one Fe+2.50+, and one Si4+ atom to form corner-sharing OLi2FeSi tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiFe2(SiO4)2 by Materials Project

LiFe2(SiO4)2 crystallizes in the hexagonal P6_422 space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded in a 4-coordinate geometry to four equivalent O atoms. All Li–O bond lengths are 2.11 Å. In the second Li site, Li is bonded in a 4-coordinate geometry to four equivalent O atoms. All Li–O bond lengths are 2.05 Å. There are two inequivalent Fe sites. In the first Fe site, Fe is bonded to four O atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra. There is two shorter (1.83 Å) and two longer (1.90 Å) Fe–O bond length. In the second Fe site, Fe is bonded to four O atoms to form FeO4 tetrahedra that share corners with four SiO4 tetrahedra. There is two shorter (1.85 Å) and two longer (1.87 Å) Fe–O bond length. There are two inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra. There is two shorter (1.64 Å) and two longer (1.65 Å) Si–O bond length. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with four FeO4 tetrahedra. There is two shorter (1.62 Å) and two longer (1.63 Å) Si–O bond length. There are four inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Fe and one Si atom. In the second O site, O is bonded in a distorted T-shaped geometry to one Li, one Fe, and one Si atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Fe and one Si atom. In the fourth O site, O is bonded in a distorted T-shaped geometry to one Li, one Fe, and one Si atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2FeSiO4 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 LiFe(SiO3)2 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 Li2Fe3Si3O10 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 LiFeSiO4 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 Li4Fe(SiO3)3 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 Li2FeSi4O11 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↗