Search NASA⌕ Search

DOE OSTI · 1284236

Materials Data on Li7(Ga3Te5)8 by Materials Project

Abstract

Li7(Ga3Te5)8 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are seven inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share corners with two equivalent LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 15–27°. There are a spread of Li–Te bond distances ranging from 3.00–3.48 Å. In the second Li1+ site, Li1+ is bonded in a trigonal non-coplanar geometry to three Te+1.98- atoms. There are a spread of Li–Te bond distances ranging from 2.67–2.70 Å. In the third Li1+ site, Li1+ is bonded in a trigonal non-coplanar geometry to three Te+1.98- atoms. There are a spread of Li–Te bond distances ranging from 2.68–2.71 Å. In the fourth Li1+ site, Li1+ is bonded in a trigonal non-coplanar geometry to three Te+1.98- atoms. There are a spread of Li–Te bond distances ranging from 2.77–2.81 Å. In the fifth Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 17°. There are a spread of Li–Te bond distances ranging from 2.99–3.46 Å. In the sixth Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share corners with three LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 15–28°. There are a spread of Li–Te bond distances ranging from 3.00–3.48 Å. In the seventh Li1+ site, Li1+ is bonded to six Te+1.98- atoms to form distorted LiTe6 octahedra that share corners with two LiTe6 octahedra, corners with four GaTe4 tetrahedra, and edges with four GaTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 17–28°. There are a spread of Li–Te bond distances ranging from 3.01–3.51 Å. There are twenty-four inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the second Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.64–2.72 Å. In the third Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the fourth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the fifth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the sixth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the seventh Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.61–2.70 Å. In the eighth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the ninth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the tenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.61–2.72 Å. In the eleventh Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.63–2.72 Å. In the twelfth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the thirteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 66°. There are a spread of Ga–Te bond distances ranging from 2.65–2.71 Å. In the fourteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.65–2.72 Å. In the fifteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ga–Te bond distances ranging from 2.62–2.71 Å. In the sixteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ga–Te bond distances ranging from 2.63–2.70 Å. In the seventeenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Ga–Te bond distances ranging from 2.62–2.70 Å. In the eighteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.62–2.72 Å. In the nineteenth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. There are a spread of Ga–Te bond distances ranging from 2.61–2.70 Å. In the twentieth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with four GaTe4 tetrahedra, an edgeedge with one LiTe6 octahedra, and an edgeedge with one GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 62°. There are a spread of Ga–Te bond distances ranging from 2.63–2.70 Å. In the twenty-first Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra and corners with six GaTe4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of Ga–Te bond distances ranging from 2.64–2.72 Å. In the twenty-second Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.63–2.71 Å. In the twenty-third Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share corners with six GaTe4 tetrahedra and an edgeedge with one LiTe6 octahedra. There are a spread of Ga–Te bond distances ranging from 2.64–2.72 Å. In the twenty-fourth Ga3+ site, Ga3+ is bonded to four Te+1.98- atoms to form GaTe4 tetrahedra that share a cornercorner with one LiTe6 octahedra, corners with six GaTe4 tetrahedra, and an edgeedge with one LiTe6 octahedra. The corner-sharing octahedral tilt angles are 66°. There are a spread of Ga–Te bond distances ranging from 2.65–2.71 Å. There are forty inequivalent Te+1.98- sites. In the first Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the second Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the third Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the fourth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the fifth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the sixth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the seventh Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to three Ga3+ atoms. In the eighth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to three Ga3+ atoms. In the ninth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the tenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the eleventh Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the twelfth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to one Li1+ and two Ga3+ atoms. In the thirteenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the fourteenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the fifteenth Te+1.98- site, Te+1.98- is bonded in a distorted rectangular see-saw-like geometry to two Li1+ and two Ga3+ atoms. In the sixteenth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the seventeenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the eighteenth Te+1.98- site, Te+1.98- is bonded in a 3-coordinate geometry to three Ga3+ atoms. In the nineteenth Te+1.98- site, Te+1.98- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two Ga3+ atoms. In the twentieth Te+1.98- site, Te+1.98- is bonded in a 4-coordinate geometry to two Li1+ and two Ga3+ atoms. In th

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on Li7(Ga3Te5)8 by Materials Project. https://doi.org/10.17188/1284236

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

Cyclic moisture reactivation of calcium sorbents for long duration thermochemical energy storage

The transition to a flexible and reliable energy infrastructure, using electro-thermal energy generation technologies such as geothermal, concentrated solar power, and nuclear, usually demands simultaneous advancement of thermal energy storage (TES) to support on-demand electricity generation and industrial applications while mitigating the inherent intermittency of renewable energy sources and power outages from direct energy generation. Among TES technologies, thermochemical energy storage (TCES) based on calcium looping emerges as a compelling high-power energy storage candidate due to its high reaction enthalpy, compatibility with elevated operating temperatures, and abundance of low-cost materials. However, the long-term durability of calcium-based sorbents for TCES is hindered by surface sintering and particle aggregation, leading to performance degradation over repeated thermal cycles. This study explores a moisture hydration-based strategy to regenerate a degraded calcium sorbent and mitigate performance degradation for long duration TCES. The addition of moisture transforms calcium oxide into calcium hydroxide and produces intercalation water layers, associated with a regenerated surface area and reduced calcium oxide crystallite size. Both these effects are beneficial in restoring the sorbents' reactivity for carbonization. Additionally, an optimized hydration-assisted reactivation protocol balances the recovered energy storage capacity with heating penalty required for moisture removal from hydrated samples, resulting in an enhanced energy storage capacity up to 176% compared to benchmark sorbents that undergo cycling without reactivation after 60 cycles. In conclusion, these results highlight the potential of hydration-assisted reactivation to enhance the long-term performance of TCES, providing an effective pathway to advancing electro-thermal storage technologies.

36 MATERIALS SCIENCE↗