Search NASA⌕ Search

DOE OSTI · 1284185

Materials Data on Tc6BiO18 by Materials Project

Abstract

Tc6BiO18 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Tc+5.50+ sites. In the first Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 30–41°. There are a spread of Tc–O bond distances ranging from 1.84–2.03 Å. In the second Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 31–54°. There are a spread of Tc–O bond distances ranging from 1.81–2.12 Å. In the third Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 28–52°. There are a spread of Tc–O bond distances ranging from 1.84–2.07 Å. In the fourth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 30–52°. There are a spread of Tc–O bond distances ranging from 1.84–2.06 Å. In the fifth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 30–53°. There are a spread of Tc–O bond distances ranging from 1.86–2.06 Å. In the sixth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 28–52°. There are a spread of Tc–O bond distances ranging from 1.88–2.01 Å. In the seventh Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 31–52°. There are a spread of Tc–O bond distances ranging from 1.84–2.14 Å. In the eighth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 31–38°. There are a spread of Tc–O bond distances ranging from 1.85–2.00 Å. In the ninth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 30–53°. There are a spread of Tc–O bond distances ranging from 1.85–2.08 Å. In the tenth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 25–53°. There are a spread of Tc–O bond distances ranging from 1.87–2.01 Å. In the eleventh Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 25–54°. There are a spread of Tc–O bond distances ranging from 1.83–2.09 Å. In the twelfth Tc+5.50+ site, Tc+5.50+ is bonded to six O2- atoms to form corner-sharing TcO6 octahedra. The corner-sharing octahedra tilt angles range from 30–53°. There are a spread of Tc–O bond distances ranging from 1.86–2.04 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.16–2.97 Å. In the second Bi3+ site, Bi3+ is bonded in a distorted hexagonal planar geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.19–2.87 Å. There are thirty-six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Tc+5.50+ and one Bi3+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Tc+5.50+ and one Bi3+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Tc+5.50+ and one Bi3+ atom. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the thirteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the fourteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the fifteenth O2- site, O2- is bonded in a 3-coordinate geometry to two Tc+5.50+ and one Bi3+ atom. In the sixteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Tc+5.50+ and one Bi3+ atom. In the seventeenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Tc+5.50+ and one Bi3+ atom. In the eighteenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Tc+5.50+ and one Bi3+ atom. In the twentieth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Tc+5.50+ and one Bi3+ atom. In the twenty-second O2- site, O2- is bonded in a 2-coordinate geometry to two Tc+5.50+ and one Bi3+ atom. In the twenty-third O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the twenty-fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the twenty-fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the twenty-sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the twenty-seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Tc+5.50+ and one Bi3+ atom. In the twenty-eighth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the twenty-ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the thirtieth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the thirty-first O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the thirty-second O2- site, O2- is bonded in a 3-coordinate geometry to two Tc+5.50+ and one Bi3+ atom. In the thirty-third O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the thirty-fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Tc+5.50+ and one Bi3+ atom. In the thirty-fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms. In the thirty-sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Tc+5.50+ atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-30. Materials Data on Tc6BiO18 by Materials Project. https://doi.org/10.17188/1284185

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↗