Engineering Papers⌕ Search

DOE OSTI · 1298569

Materials Data on Ba2Y5Cl19 by Materials Project

Abstract

Ba2Y5Cl19 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a distorted rectangular see-saw-like geometry to four Cl1- atoms. There are a spread of Ba–Cl bond distances ranging from 2.97–3.03 Å. In the second Ba2+ site, Ba2+ is bonded in a distorted rectangular see-saw-like geometry to five Cl1- atoms. There are a spread of Ba–Cl bond distances ranging from 2.97–3.77 Å. There are five inequivalent Y3+ sites. In the first Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 24–37°. There are a spread of Y–Cl bond distances ranging from 2.61–2.69 Å. In the second Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 15–27°. There are a spread of Y–Cl bond distances ranging from 2.63–2.68 Å. In the third Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 23–43°. There are a spread of Y–Cl bond distances ranging from 2.62–2.70 Å. In the fourth Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 30–37°. There are a spread of Y–Cl bond distances ranging from 2.63–2.70 Å. In the fifth Y3+ site, Y3+ is bonded to six Cl1- atoms to form corner-sharing YCl6 octahedra. The corner-sharing octahedra tilt angles range from 20–43°. There are a spread of Y–Cl bond distances ranging from 2.61–2.67 Å. There are nineteen inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two equivalent Y3+ atoms. In the second Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom. In the third Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the fourth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two Ba2+ and one Y3+ atom. In the fifth Cl1- site, Cl1- is bonded in a linear geometry to two equivalent Y3+ atoms. In the sixth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the seventh Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom. In the eighth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the ninth Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to one Ba2+ and one Y3+ atom. In the tenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the eleventh Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to one Ba2+ and one Y3+ atom. In the twelfth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the thirteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom. In the fourteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the fifteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the sixteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the seventeenth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to one Ba2+ and one Y3+ atom. In the eighteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two Y3+ atoms. In the nineteenth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to one Ba2+ and one Y3+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-05-31. Materials Data on Ba2Y5Cl19 by Materials Project. https://doi.org/10.17188/1298569

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↗