Search NASA⌕ Search

DOE OSTI · 1271550

Materials Data on RbTeNO3F4 by Materials Project

Abstract

RbNTeO3F4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to three O2- and eight F1- atoms. There are a spread of Rb–O bond distances ranging from 3.03–3.54 Å. There are a spread of Rb–F bond distances ranging from 2.98–3.42 Å. In the second Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to three O2- and eight F1- atoms. There are a spread of Rb–O bond distances ranging from 3.07–3.41 Å. There are a spread of Rb–F bond distances ranging from 2.97–3.45 Å. In the third Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to three O2- and eight F1- atoms. There are a spread of Rb–O bond distances ranging from 3.09–3.35 Å. There are a spread of Rb–F bond distances ranging from 2.95–3.22 Å. In the fourth Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to three O2- and eight F1- atoms. There are a spread of Rb–O bond distances ranging from 2.95–3.38 Å. There are a spread of Rb–F bond distances ranging from 2.90–3.23 Å. There are four inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.32 Å. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.32 Å. In the third N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.30 Å. In the fourth N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.32 Å. There are four inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four F1- atoms. There are a spread of Te–F bond distances ranging from 1.91–2.02 Å. In the second Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four F1- atoms. There are a spread of Te–F bond distances ranging from 1.92–2.02 Å. In the third Te4+ site, Te4+ is bonded in a 4-coordinate geometry to four F1- atoms. There are a spread of Te–F bond distances ranging from 1.92–2.02 Å. In the fourth Te4+ site, Te4+ is bonded in a 5-coordinate geometry to one O2- and four F1- atoms. The Te–O bond length is 2.39 Å. There are a spread of Te–F bond distances ranging from 1.92–2.02 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+ and one N5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+ and one N5+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+ and one N5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+ and one N5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+ and one N5+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+ and one N5+ atom. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+ and one N5+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one N5+, and one Te4+ atom. There are sixteen inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom. In the second F1- site, F1- is bonded in a 1-coordinate geometry to two Rb1+ and one Te4+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom. In the fourth F1- site, F1- is bonded in a distorted single-bond geometry to three Rb1+ and one Te4+ atom. In the fifth F1- site, F1- is bonded in a distorted single-bond geometry to one Rb1+ and one Te4+ atom. In the sixth F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom. In the seventh F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom. In the eighth F1- site, F1- is bonded in a distorted single-bond geometry to one Rb1+ and one Te4+ atom. In the ninth F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom. In the tenth F1- site, F1- is bonded in a distorted single-bond geometry to three Rb1+ and one Te4+ atom. In the eleventh F1- site, F1- is bonded in a single-bond geometry to two Rb1+ and one Te4+ atom. In the twelfth F1- site, F1- is bonded in a 1-coordinate geometry to two Rb1+ and one Te4+ atom. In the thirteenth F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom. In the fourteenth F1- site, F1- is bonded in a 1-coordinate geometry to two Rb1+ and one Te4+ atom. In the fifteenth F1- site, F1- is bonded in a 1-coordinate geometry to two Rb1+ and one Te4+ atom. In the sixteenth F1- site, F1- is bonded in a distorted single-bond geometry to two Rb1+ and one Te4+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-05-02. Materials Data on RbTeNO3F4 by Materials Project. https://doi.org/10.17188/1271550

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↗