Search NASA⌕ Search

DOE OSTI · 1285440

Materials Data on Ca5Yb3Ti5Mn3O24 by Materials Project

Abstract

Ca5Yb3Ti5Mn3O24 is Orthorhombic Perovskite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are five inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.34–2.74 Å. In the second Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.33–2.70 Å. In the third Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.33–2.72 Å. In the fourth Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.34–2.71 Å. In the fifth Ca2+ site, Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.33–2.71 Å. There are three inequivalent Yb3+ sites. In the first Yb3+ site, Yb3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Yb–O bond distances ranging from 2.32–2.68 Å. In the second Yb3+ site, Yb3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Yb–O bond distances ranging from 2.33–2.62 Å. In the third Yb3+ site, Yb3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Yb–O bond distances ranging from 2.30–2.64 Å. There are five inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one MnO6 octahedra and corners with five TiO6 octahedra. The corner-sharing octahedra tilt angles range from 25–28°. There are a spread of Ti–O bond distances ranging from 1.95–1.98 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra tilt angles range from 25–28°. There are a spread of Ti–O bond distances ranging from 1.93–1.99 Å. In the third Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one TiO6 octahedra and corners with five MnO6 octahedra. The corner-sharing octahedra tilt angles range from 25–26°. There are a spread of Ti–O bond distances ranging from 1.94–1.99 Å. In the fourth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one MnO6 octahedra and corners with five TiO6 octahedra. The corner-sharing octahedra tilt angles range from 24–28°. There are a spread of Ti–O bond distances ranging from 1.94–1.99 Å. In the fifth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one MnO6 octahedra and corners with five TiO6 octahedra. The corner-sharing octahedra tilt angles range from 25–27°. There are a spread of Ti–O bond distances ranging from 1.95–1.98 Å. There are three inequivalent Mn3+ sites. In the first Mn3+ site, Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two TiO6 octahedra and corners with four equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 26–28°. There are a spread of Mn–O bond distances ranging from 1.89–1.98 Å. In the second Mn3+ site, Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share a cornercorner with one TiO6 octahedra and corners with five MnO6 octahedra. The corner-sharing octahedra tilt angles range from 25–31°. There are a spread of Mn–O bond distances ranging from 1.91–1.99 Å. In the third Mn3+ site, Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share a cornercorner with one MnO6 octahedra and corners with five TiO6 octahedra. The corner-sharing octahedra tilt angles range from 24–31°. There are a spread of Mn–O bond distances ranging from 1.92–1.96 Å. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+ and two Ti4+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two Yb3+, one Ti4+, and one Mn3+ atom. In the third O2- site, O2- is bonded in a 5-coordinate geometry to three Ca2+ and two Ti4+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to two Ca2+, one Yb3+, one Ti4+, and one Mn3+ atom. In the fifth O2- site, O2- is bonded in a 5-coordinate geometry to one Ca2+, two Yb3+, and two Mn3+ atoms. In the sixth O2- site, O2- is bonded in a 5-coordinate geometry to two Ca2+, one Yb3+, and two Ti4+ atoms. In the seventh O2- site, O2- is bonded in a 5-coordinate geometry to one Ca2+, two Yb3+, and two Mn3+ atoms. In the eighth O2- site, O2- is bonded in a 5-coordinate geometry to three Ca2+ and two Ti4+ atoms. In the ninth O2- site, O2- is bonded in a 5-coordinate geometry to two Ca2+, one Yb3+, one Ti4+, and one Mn3+ atom. In the tenth O2- site, O2- is bonded in a 5-coordinate geometry to two Ca2+, one Yb3+, and two Ti4+ atoms. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+ and two Ti4+ atoms. In the twelfth O2- site, O2- is bonded in a distorted tetrahedral geometry to two Yb3+ and two Mn3+ atoms. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to one Ca2+, one Yb3+, one Ti4+, and one Mn3+ atom. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+, one Ti4+, and one Mn3+ atom. In the fifteenth O2- site, O2- is bonded in a 5-coordinate geometry to two Ca2+, one Yb3+, and two Ti4+ atoms. In the sixteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Ca2+ and two Ti4+ atoms. In the seventeenth O2- site, O2- is bonded in a 5-coordinate geometry to one Ca2+, two Yb3+, one Ti4+, and one Mn3+ atom. In the eighteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Yb3+ and two Mn3+ atoms. In the nineteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Ca2+ and two Ti4+ atoms. In the twentieth O2- site, O2- is bonded in a 5-coordinate geometry to three Ca2+ and two Ti4+ atoms. In the twenty-first O2- site, O2- is bonded in a 5-coordinate geometry to one Ca2+, two Yb3+, one Ti4+, and one Mn3+ atom. In the twenty-second O2- site, O2- is bonded in a 5-coordinate geometry to one Ca2+, two Yb3+, and two Mn3+ atoms. In the twenty-third O2- site, O2- is bonded in a 4-coordinate geometry to two Ca2+ and two Ti4+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Ca2+, one Yb3+, one Ti4+, and one Mn3+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-05-03. Materials Data on Ca5Yb3Ti5Mn3O24 by Materials Project. https://doi.org/10.17188/1285440

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↗