Search NASA⌕ Search

DOE OSTI · 1299993

Materials Data on Li12CrGa11O24 by Materials Project

Abstract

Li12CrGa11O24 is Stannite-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are two shorter (2.00 Å) and two longer (2.01 Å) Li–O bond lengths. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.03 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.03 Å. In the fourth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with eight GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.02 Å. In the fifth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.02 Å. In the sixth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.04 Å. In the seventh Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are two shorter (2.01 Å) and two longer (2.02 Å) Li–O bond lengths. In the eighth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with eight GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.02 Å. In the ninth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are one shorter (2.00 Å) and three longer (2.01 Å) Li–O bond lengths. In the tenth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with four LiO4 tetrahedra, and corners with seven GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.01 Å. In the eleventh Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with eight GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.02 Å. In the twelfth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four LiO4 tetrahedra and corners with eight GaO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.00–2.02 Å. Cr3+ is bonded to four O2- atoms to form CrO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Cr–O bond distances ranging from 1.90–1.94 Å. There are eleven inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.87 Å) and two longer (1.88 Å) Ga–O bond length. In the second Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.87 Å) and two longer (1.88 Å) Ga–O bond length. In the third Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.87 Å) and two longer (1.88 Å) Ga–O bond length. In the fourth Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There is three shorter (1.87 Å) and one longer (1.88 Å) Ga–O bond length. In the fifth Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There are a spread of Ga–O bond distances ranging from 1.87–1.89 Å. In the sixth Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with three GaO4 tetrahedra, and corners with eight LiO4 tetrahedra. There is two shorter (1.87 Å) and two longer (1.88 Å) Ga–O bond length. In the seventh Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.87 Å) and two longer (1.88 Å) Ga–O bond length. In the eighth Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with three GaO4 tetrahedra, and corners with eight LiO4 tetrahedra. There is one shorter (1.87 Å) and three longer (1.88 Å) Ga–O bond length. In the ninth Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with three GaO4 tetrahedra, and corners with eight LiO4 tetrahedra. There is three shorter (1.87 Å) and one longer (1.88 Å) Ga–O bond length. In the tenth Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share a cornercorner with one CrO4 tetrahedra, corners with three GaO4 tetrahedra, and corners with eight LiO4 tetrahedra. There are a spread of Ga–O bond distances ranging from 1.86–1.88 Å. In the eleventh Ga3+ site, Ga3+ is bonded to four O2- atoms to form GaO4 tetrahedra that share corners with four GaO4 tetrahedra and corners with eight LiO4 tetrahedra. There is two shorter (1.87 Å) and two longer (1.88 Å) Ga–O bond length. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the second O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the third O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the fourth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the fifth O2- site, O2- is bonded to two Li1+, one Cr3+, and one Ga3+ atom to form corner-sharing OLi2CrGa tetrahedra. In the sixth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the seventh O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the eighth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the ninth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the tenth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the eleventh O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the twelfth O2- site, O2- is bonded to two Li1+, one Cr3+, and one Ga3+ atom to form corner-sharing OLi2CrGa tetrahedra. In the thirteenth O2- site, O2- is bonded to two Li1+, one Cr3+, and one Ga3+ atom to form corner-sharing OLi2CrGa tetrahedra. In the fourteenth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the fifteenth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the sixteenth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the seventeenth O2- site, O2- is bonded to two Li1+, one Cr3+, and one Ga3+ atom to form corner-sharing OLi2CrGa tetrahedra. In the eighteenth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the nineteenth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the twentieth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the twenty-first O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the twenty-second O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the twenty-third O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra. In the twenty-fourth O2- site, O2- is bonded to two Li1+ and two Ga3+ atoms to form corner-sharing OLi2Ga2 tetrahedra.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-30. Materials Data on Li12CrGa11O24 by Materials Project. https://doi.org/10.17188/1299993

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↗