Search NASA⌕ Search

DOE OSTI · 1291021

Materials Data on Bi11PO20 by Materials Project

Abstract

Bi11PO20 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are eleven inequivalent Bi+3.18+ sites. In the first Bi+3.18+ site, Bi+3.18+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.12–2.89 Å. In the second Bi+3.18+ site, Bi+3.18+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.16–2.73 Å. In the third Bi+3.18+ site, Bi+3.18+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.90 Å. In the fourth Bi+3.18+ site, Bi+3.18+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.16–2.72 Å. In the fifth Bi+3.18+ site, Bi+3.18+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.14–2.89 Å. In the sixth Bi+3.18+ site, Bi+3.18+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.12–2.71 Å. In the seventh Bi+3.18+ site, Bi+3.18+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.14–2.35 Å. In the eighth Bi+3.18+ site, Bi+3.18+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.15–2.85 Å. In the ninth Bi+3.18+ site, Bi+3.18+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.94 Å. In the tenth Bi+3.18+ site, Bi+3.18+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.12–2.83 Å. In the eleventh Bi+3.18+ site, Bi+3.18+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.92 Å. P5+ is bonded in a tetrahedral geometry to four O2- atoms. There is one shorter (1.55 Å) and three longer (1.57 Å) P–O bond length. There are twenty inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two Bi+3.18+ and one P5+ atom. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Bi+3.18+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to three Bi+3.18+ atoms. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to three Bi+3.18+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to three Bi+3.18+ atoms. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three Bi+3.18+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to four Bi+3.18+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi+3.18+ atoms. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to two Bi+3.18+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to four Bi+3.18+ atoms. In the eleventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi+3.18+ atoms. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to three Bi+3.18+ atoms. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Bi+3.18+ atoms. In the fourteenth O2- site, O2- is bonded in a trigonal planar geometry to three Bi+3.18+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi+3.18+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Bi+3.18+ and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted single-bond geometry to two Bi+3.18+ and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi+3.18+ atoms. In the nineteenth O2- site, O2- is bonded in a 2-coordinate geometry to three Bi+3.18+ atoms. In the twentieth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to four Bi+3.18+ atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-07-15. Materials Data on Bi11PO20 by Materials Project. https://doi.org/10.17188/1291021

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↗