Search NASA⌕ Search

DOE OSTI · 1263298

Materials Data on Ag7(PbO3)3 by Materials Project

Abstract

Ag7(PbO3)3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are fifteen inequivalent Ag+1.14+ sites. In the first Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. There are one shorter (2.13 Å) and one longer (2.14 Å) Ag–O bond lengths. In the second Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. Both Ag–O bond lengths are 2.14 Å. In the third Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. There are one shorter (2.13 Å) and one longer (2.14 Å) Ag–O bond lengths. In the fourth Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. Both Ag–O bond lengths are 2.14 Å. In the fifth Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. Both Ag–O bond lengths are 2.15 Å. In the sixth Ag+1.14+ site, Ag+1.14+ is bonded in a distorted trigonal planar geometry to three O2- atoms. All Ag–O bond lengths are 2.33 Å. In the seventh Ag+1.14+ site, Ag+1.14+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are one shorter (2.26 Å) and two longer (2.36 Å) Ag–O bond lengths. In the eighth Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. Both Ag–O bond lengths are 2.15 Å. In the ninth Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two O2- atoms. Both Ag–O bond lengths are 2.15 Å. In the tenth Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two equivalent O2- atoms. Both Ag–O bond lengths are 2.14 Å. In the eleventh Ag+1.14+ site, Ag+1.14+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. All Ag–O bond lengths are 2.32 Å. In the twelfth Ag+1.14+ site, Ag+1.14+ is bonded in a distorted trigonal planar geometry to three O2- atoms. There are a spread of Ag–O bond distances ranging from 2.30–2.32 Å. In the thirteenth Ag+1.14+ site, Ag+1.14+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Ag–O bond distances ranging from 2.31–2.33 Å. In the fourteenth Ag+1.14+ site, Ag+1.14+ is bonded in a linear geometry to two equivalent O2- atoms. Both Ag–O bond lengths are 2.13 Å. In the fifteenth Ag+1.14+ site, Ag+1.14+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are one shorter (2.26 Å) and two longer (2.35 Å) Ag–O bond lengths. There are six inequivalent Pb+3.33+ sites. In the first Pb+3.33+ site, Pb+3.33+ is bonded to six O2- atoms to form edge-sharing PbO6 octahedra. There are five shorter (2.27 Å) and one longer (2.28 Å) Pb–O bond lengths. In the second Pb+3.33+ site, Pb+3.33+ is bonded to six O2- atoms to form edge-sharing PbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.20–2.28 Å. In the third Pb+3.33+ site, Pb+3.33+ is bonded to six O2- atoms to form edge-sharing PbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.20–2.28 Å. In the fourth Pb+3.33+ site, Pb+3.33+ is bonded to six O2- atoms to form edge-sharing PbO6 octahedra. There are one shorter (2.26 Å) and five longer (2.27 Å) Pb–O bond lengths. In the fifth Pb+3.33+ site, Pb+3.33+ is bonded to six O2- atoms to form edge-sharing PbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.20–2.28 Å. In the sixth Pb+3.33+ site, Pb+3.33+ is bonded to six O2- atoms to form edge-sharing PbO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.20–2.29 Å. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the second O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the third O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the fourth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the fifth O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Ag+1.14+ and two Pb+3.33+ atoms. In the sixth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the seventh O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Ag+1.14+ and two Pb+3.33+ atoms. In the eighth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the ninth O2- site, O2- is bonded to two Ag+1.14+ and two equivalent Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the tenth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the eleventh O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the twelfth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the thirteenth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the fourteenth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form corner-sharing OAg2Pb2 tetrahedra. In the fifteenth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the sixteenth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form corner-sharing OAg2Pb2 tetrahedra. In the seventeenth O2- site, O2- is bonded to two Ag+1.14+ and two Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the eighteenth O2- site, O2- is bonded to two Ag+1.14+ and two equivalent Pb+3.33+ atoms to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on Ag7(PbO3)3 by Materials Project. https://doi.org/10.17188/1263298

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↗