Search NASA⌕ Search

DOE OSTI · 1654668

Materials Data on Cr3Si3Pb10(ClO12)2 by Materials Project

Abstract

Cr3Pb10Si3(O12Cl)2 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are three inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Cr–O bond distances ranging from 1.66–1.69 Å. In the second Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.66 Å) and one longer (1.69 Å) Cr–O bond length. In the third Cr6+ site, Cr6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Cr–O bond distances ranging from 1.66–1.68 Å. There are eight inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.54–3.17 Å. In the second Pb2+ site, Pb2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Pb–O bond distances ranging from 2.40–3.14 Å. In the third Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to five O2- and two equivalent Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.46–2.77 Å. Both Pb–Cl bond lengths are 3.14 Å. In the fourth Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to six O2- and two equivalent Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.54–3.07 Å. Both Pb–Cl bond lengths are 3.20 Å. In the fifth Pb2+ site, Pb2+ is bonded in a 1-coordinate geometry to six O2- and two equivalent Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.25–3.12 Å. Both Pb–Cl bond lengths are 3.22 Å. In the sixth Pb2+ site, Pb2+ is bonded in a 3-coordinate geometry to six O2- and two equivalent Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.30–2.88 Å. Both Pb–Cl bond lengths are 3.28 Å. In the seventh Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to five O2- and two equivalent Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.36–2.79 Å. Both Pb–Cl bond lengths are 3.23 Å. In the eighth Pb2+ site, Pb2+ is bonded in a 7-coordinate geometry to five O2- and two equivalent Cl1- atoms. There are a spread of Pb–O bond distances ranging from 2.50–2.74 Å. Both Pb–Cl bond lengths are 3.13 Å. There are three inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a tetrahedral geometry to four O2- atoms. All Si–O bond lengths are 1.66 Å. In the second Si4+ site, Si4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Si–O bond distances ranging from 1.65–1.68 Å. In the third Si4+ site, Si4+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.66 Å) and two longer (1.67 Å) Si–O bond length. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one Si4+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and three Pb2+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and three Pb2+ atoms. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and three Pb2+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Pb2+ and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one Si4+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one Si4+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and three Pb2+ atoms. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and three Pb2+ atoms. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one Cr6+ and three Pb2+ atoms. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one Si4+ atom. In the thirteenth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Pb2+ and one Si4+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one Si4+ atom. In the fifteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and two equivalent Pb2+ atoms. In the sixteenth O2- site, O2- is bonded in a single-bond geometry to one Cr6+ and three Pb2+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cr6+ and two equivalent Pb2+ atoms. In the eighteenth O2- site, O2- is bonded in a distorted single-bond geometry to three Pb2+ and one Si4+ atom. Cl1- is bonded in a 6-coordinate geometry to six Pb2+ atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-07-15. Materials Data on Cr3Si3Pb10(ClO12)2 by Materials Project. https://doi.org/10.17188/1654668

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↗