Engineering Papers⌕ Search

DOE OSTI · 1734271

Materials Data on BaMgBO3F by Materials Project

Abstract

BaMgBO3F crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are twelve inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to seven O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.80–3.18 Å. There are a spread of Ba–F bond distances ranging from 2.73–3.07 Å. In the second Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to six O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.74–3.02 Å. There are a spread of Ba–F bond distances ranging from 2.80–3.23 Å. In the third Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to seven O2- and two F1- atoms. There are a spread of Ba–O bond distances ranging from 2.78–2.96 Å. There are one shorter (2.94 Å) and one longer (2.96 Å) Ba–F bond lengths. In the fourth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to seven O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.79–3.11 Å. There are a spread of Ba–F bond distances ranging from 2.73–3.11 Å. In the fifth Ba2+ site, Ba2+ is bonded in a 4-coordinate geometry to seven O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.78–3.37 Å. There are a spread of Ba–F bond distances ranging from 2.68–3.17 Å. In the sixth Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to seven O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.80–3.23 Å. There are a spread of Ba–F bond distances ranging from 2.68–3.14 Å. In the seventh Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to eight O2- and two F1- atoms. There are a spread of Ba–O bond distances ranging from 2.79–3.24 Å. There are one shorter (2.94 Å) and one longer (3.07 Å) Ba–F bond lengths. In the eighth Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to five O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.67–2.90 Å. There are a spread of Ba–F bond distances ranging from 2.84–3.12 Å. In the ninth Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to five O2- and three F1- atoms. There are a spread of Ba–O bond distances ranging from 2.71–2.88 Å. There are a spread of Ba–F bond distances ranging from 2.79–3.09 Å. In the tenth Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to five O2- and two F1- atoms. There are a spread of Ba–O bond distances ranging from 2.71–2.88 Å. There are one shorter (2.86 Å) and one longer (3.00 Å) Ba–F bond lengths. In the eleventh Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to six O2- and one F1- atom. There are a spread of Ba–O bond distances ranging from 2.71–2.85 Å. The Ba–F bond length is 2.89 Å. In the twelfth Ba2+ site, Ba2+ is bonded in a 7-coordinate geometry to eight O2- and two F1- atoms. There are a spread of Ba–O bond distances ranging from 2.77–3.36 Å. There are one shorter (2.90 Å) and one longer (3.18 Å) Ba–F bond lengths. There are twelve inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to four O2- and two equivalent F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 3–8°. There are a spread of Mg–O bond distances ranging from 1.97–2.26 Å. There are one shorter (2.05 Å) and one longer (2.08 Å) Mg–F bond lengths. In the second Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 8–20°. There are a spread of Mg–O bond distances ranging from 2.01–2.23 Å. There are one shorter (2.06 Å) and one longer (2.11 Å) Mg–F bond lengths. In the third Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 6–20°. There are a spread of Mg–O bond distances ranging from 2.01–2.21 Å. There are one shorter (2.07 Å) and one longer (2.09 Å) Mg–F bond lengths. In the fourth Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 9–21°. There are a spread of Mg–O bond distances ranging from 1.99–2.23 Å. There are one shorter (2.04 Å) and one longer (2.12 Å) Mg–F bond lengths. In the fifth Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 9–22°. There are a spread of Mg–O bond distances ranging from 1.99–2.21 Å. There are one shorter (2.05 Å) and one longer (2.13 Å) Mg–F bond lengths. In the sixth Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 6–12°. There are a spread of Mg–O bond distances ranging from 1.96–2.25 Å. There are one shorter (2.05 Å) and one longer (2.09 Å) Mg–F bond lengths. In the seventh Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 6–21°. There are a spread of Mg–O bond distances ranging from 1.99–2.18 Å. There are one shorter (2.08 Å) and one longer (2.09 Å) Mg–F bond lengths. In the eighth Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 7–12°. There are a spread of Mg–O bond distances ranging from 1.96–2.24 Å. There are one shorter (2.06 Å) and one longer (2.08 Å) Mg–F bond lengths. In the ninth Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 7–22°. There are a spread of Mg–O bond distances ranging from 2.00–2.21 Å. There are one shorter (2.09 Å) and one longer (2.10 Å) Mg–F bond lengths. In the tenth Mg2+ site, Mg2+ is bonded to four O2- and two equivalent F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 6–21°. There are a spread of Mg–O bond distances ranging from 1.95–2.27 Å. There are one shorter (2.09 Å) and one longer (2.11 Å) Mg–F bond lengths. In the eleventh Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 8–23°. There are a spread of Mg–O bond distances ranging from 1.98–2.20 Å. There are one shorter (2.04 Å) and one longer (2.15 Å) Mg–F bond lengths. In the twelfth Mg2+ site, Mg2+ is bonded to four O2- and two F1- atoms to form corner-sharing MgO4F2 octahedra. The corner-sharing octahedra tilt angles range from 6–23°. There are a spread of Mg–O bond distances ranging from 1.99–2.20 Å. There are one shorter (2.08 Å) and one longer (2.10 Å) Mg–F bond lengths. There are twelve inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.38 Å) and two longer (1.39 Å) B–O bond length. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.39 Å. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.38 Å) and two longer (1.39 Å) B–O bond length. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.37 Å) and two longer (1.38 Å) B–O bond length. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.38–1.40 Å. In the sixth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.37 Å) and two longer (1.38 Å) B–O bond length. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.39 Å. In the eighth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.38 Å) and two longer (1.39 Å) B–O bond length. In the ninth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.38 Å. In the tenth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.37 Å) and two longer (1.38 Å) B–O bond length. In the eleventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.39 Å. In the twelfth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.39 Å. There are thirty-six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, one Mg2+, and one B3+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, one Mg2+, and one B3+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+, one Mg2+, and one B3+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ba2+, one Mg2+, and one B3+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+, one Mg2+, and one B3+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Ba2+, two Mg2+, and one B3+ atom. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the fourteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Ba2+, two Mg2+, and one B3+ atom. In the seventeenth O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+, one Mg2+, and one B3+ atom. In the eighteenth O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the twentieth O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the twenty-second O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to two Ba2+, two Mg2+, and one B3+ atom. In the twenty-fourth O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the twenty-fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Ba2+, one Mg2+, and one B3+ atom. In the twenty-sixth O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the twenty-seventh O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+, and one B3+ atom. In the twenty-eighth O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+, one Mg2+, and one B3+ atom. In the twenty-ninth O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+, one Mg2+, and one B3+ atom. In the thirtieth O2- site, O2- is bonded in a 2-coordinate geometry to three Ba2+, one Mg2+, and one B3+ atom. In the thirty-first O2- site, O2- is bonded in a 2-coordinate geometry to two Ba2+, one Mg2+,

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on BaMgBO3F by Materials Project. https://doi.org/10.17188/1734271

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↗