Search NASA⌕ Search

DOE OSTI · 1287910

Materials Data on Na5P3H48C4N(O9F)3 by Materials Project

Abstract

Na3(H2O)10Na2PH14O10FN(CH3)4H2O(PO3F)2 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of four fluorophosphoric acid molecules; two tetramethylammonium molecules; two water molecules; two Na2PH14O10F ribbons oriented in the (1, 0, 0) direction; and one Na3(H2O)10 ribbon oriented in the (0, 1, 0) direction. In each Na2PH14O10F ribbon, there are two inequivalent Na sites. In the first Na site, Na is bonded in a distorted octahedral geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.32–2.54 Å. In the second Na site, Na is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.27–2.78 Å. P is bonded in a tetrahedral geometry to three O and one F atom. There is two shorter (1.53 Å) and one longer (1.54 Å) P–O bond length. The P–F bond length is 1.62 Å. There are fourteen inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a 2-coordinate geometry to one Na and one P atom. In the second O site, O is bonded in a single-bond geometry to one P atom. In the third O site, O is bonded in a single-bond geometry to one P atom. In the fourth O site, O is bonded in a water-like geometry to two Na and two H atoms. In the fifth O site, O is bonded in a water-like geometry to one Na and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to one Na and two H atoms. In the seventh O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. In the eighth O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. In the ninth O site, O is bonded in a distorted water-like geometry to one Na and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. F is bonded in a single-bond geometry to one P atom. In the Na3(H2O)10 ribbon, there are three inequivalent Na sites. In the first Na site, Na is bonded to six O atoms to form a mixture of distorted edge, face, and corner-sharing NaO6 octahedra. The corner-sharing octahedral tilt angles are 31°. There are a spread of Na–O bond distances ranging from 2.35–2.68 Å. In the second Na site, Na is bonded to six O atoms to form face-sharing NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.36–2.44 Å. In the third Na site, Na is bonded to six O atoms to form a mixture of distorted edge, face, and corner-sharing NaO6 octahedra. The corner-sharing octahedral tilt angles are 31°. There are a spread of Na–O bond distances ranging from 2.32–2.62 Å. There are twenty inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the fifth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the sixth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the seventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the eighth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the ninth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the tenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the eleventh H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twelfth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the thirteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the fourteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the fifteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.00 Å. In the sixteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the seventeenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 1.01 Å. In the eighteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. In the nineteenth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the twentieth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a distorted water-like geometry to one Na and two H atoms. In the second O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. In the third O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. In the fourth O site, O is bonded in a distorted water-like geometry to two equivalent Na and two H atoms. In the fifth O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. In the sixth O site, O is bonded in a distorted water-like geometry to two Na and two H atoms. In the seventh O site, O is bonded in a distorted water-like geometry to three Na and two H atoms. In the eighth O site, O is bonded in a distorted water-like geometry to one Na and two H atoms. In the ninth O site, O is bonded in a distorted water-like geometry to one Na and two H atoms. In the tenth O site, O is bonded in a distorted water-like geometry to two equivalent Na and two H atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on Na5P3H48C4N(O9F)3 by Materials Project. https://doi.org/10.17188/1287910

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↗