Search NASA⌕ Search

DOE OSTI · 1270829

Materials Data on CsKTeH6SO10 by Materials Project

Abstract

CsKSO4Te(OH)6 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to one H1+ and eight O2- atoms. The Cs–H bond length is 3.38 Å. There are a spread of Cs–O bond distances ranging from 3.07–3.45 Å. In the second Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 3.10–3.44 Å. There are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.74–3.13 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.74–3.04 Å. There are twelve inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to one Cs1+ and one O2- atom. The H–O bond length is 1.01 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fourth H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are two inequivalent Te6+ sites. In the first Te6+ site, Te6+ is bonded in an octahedral geometry to six O2- atoms. There is four shorter (1.95 Å) and two longer (1.96 Å) Te–O bond length. In the second Te6+ site, Te6+ is bonded in an octahedral geometry to six O2- atoms. There is two shorter (1.95 Å) and four longer (1.96 Å) Te–O bond length. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of S–O bond distances ranging from 1.49–1.51 Å. In the second S6+ site, S6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of S–O bond distances ranging from 1.49–1.51 Å. There are twenty inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two Cs1+ and one S6+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one H1+, and one Te6+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one H1+, and one Te6+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Cs1+, one H1+, and one Te6+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two Cs1+, one H1+, and one Te6+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to two Cs1+ and one S6+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one H1+, and one Te6+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one K1+, and one S6+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+ and one S6+ atom. In the eleventh O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one H1+, and one Te6+ atom. In the twelfth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one H1+, and one Te6+ atom. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to one Cs1+, one H1+, and one Te6+ atom. In the fourteenth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S6+ atom. In the fifteenth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one S6+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Cs1+, one H1+, and one Te6+ atom. In the seventeenth O2- site, O2- is bonded in a 1-coordinate geometry to one Cs1+, one H1+, and one Te6+ atom. In the eighteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Cs1+, one K1+, and one S6+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one H1+, and one Te6+ atom. In the twentieth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one H1+, and one Te6+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on CsKTeH6SO10 by Materials Project. https://doi.org/10.17188/1270829

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↗