Engineering Papers⌕ Search

DOE OSTI · 1728031

Materials Data on Mn2InSbO6 by Materials Project

Abstract

Mn2InSbO6 is Corundum-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Mn2+ sites. In the first Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 pentagonal pyramids that share corners with two SbO6 octahedra, corners with four InO6 pentagonal pyramids, edges with two SbO6 octahedra, and edges with two MnO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 37–44°. There are a spread of Mn–O bond distances ranging from 2.16–2.37 Å. In the second Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 pentagonal pyramids that share corners with two SbO6 octahedra, corners with two equivalent MnO6 pentagonal pyramids, edges with two SbO6 octahedra, an edgeedge with one MnO6 pentagonal pyramid, and edges with three InO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 38–44°. There are a spread of Mn–O bond distances ranging from 2.15–2.34 Å. In the third Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 pentagonal pyramids that share corners with two SbO6 octahedra, corners with two equivalent MnO6 pentagonal pyramids, edges with two SbO6 octahedra, an edgeedge with one MnO6 pentagonal pyramid, and edges with three InO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 37–45°. There are a spread of Mn–O bond distances ranging from 2.15–2.39 Å. In the fourth Mn2+ site, Mn2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Mn–O bond distances ranging from 2.14–2.42 Å. There are two inequivalent In3+ sites. In the first In3+ site, In3+ is bonded to six O2- atoms to form distorted InO6 pentagonal pyramids that share corners with two SbO6 octahedra, corners with two equivalent MnO6 pentagonal pyramids, corners with two equivalent InO6 pentagonal pyramids, edges with two SbO6 octahedra, and edges with three MnO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 35–44°. There are a spread of In–O bond distances ranging from 2.17–2.29 Å. In the second In3+ site, In3+ is bonded to six O2- atoms to form distorted InO6 pentagonal pyramids that share corners with two SbO6 octahedra, corners with two equivalent MnO6 pentagonal pyramids, corners with two equivalent InO6 pentagonal pyramids, edges with two SbO6 octahedra, and edges with three MnO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 37–43°. There are a spread of In–O bond distances ranging from 2.15–2.34 Å. There are two inequivalent Sb5+ sites. In the first Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with two InO6 pentagonal pyramids, corners with three MnO6 pentagonal pyramids, edges with two InO6 pentagonal pyramids, and edges with three MnO6 pentagonal pyramids. There are a spread of Sb–O bond distances ranging from 2.00–2.06 Å. In the second Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with two InO6 pentagonal pyramids, corners with three MnO6 pentagonal pyramids, edges with two InO6 pentagonal pyramids, and edges with three MnO6 pentagonal pyramids. There are a spread of Sb–O bond distances ranging from 1.99–2.05 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted see-saw-like geometry to one Mn2+, two In3+, and one Sb5+ atom. In the second O2- site, O2- is bonded to two Mn2+, one In3+, and one Sb5+ atom to form distorted OMn2InSb tetrahedra that share a cornercorner with one OMn3Sb tetrahedra, corners with seven OMnIn2Sb trigonal pyramids, an edgeedge with one OMn3Sb tetrahedra, and an edgeedge with one OMn2InSb trigonal pyramid. In the third O2- site, O2- is bonded in a distorted see-saw-like geometry to two Mn2+, one In3+, and one Sb5+ atom. In the fourth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Mn2+, one In3+, and one Sb5+ atom. In the fifth O2- site, O2- is bonded to three Mn2+ and one Sb5+ atom to form a mixture of distorted edge and corner-sharing OMn3Sb tetrahedra. In the sixth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Mn2+, one In3+, and one Sb5+ atom. In the seventh O2- site, O2- is bonded to one Mn2+, two In3+, and one Sb5+ atom to form a mixture of distorted edge and corner-sharing OMnIn2Sb trigonal pyramids. In the eighth O2- site, O2- is bonded to two Mn2+, one In3+, and one Sb5+ atom to form distorted OMn2InSb trigonal pyramids that share corners with two equivalent OMn2InSb tetrahedra, corners with five OMnIn2Sb trigonal pyramids, an edgeedge with one OMn3Sb tetrahedra, and edges with three OMn2InSb trigonal pyramids. In the ninth O2- site, O2- is bonded to two Mn2+, one In3+, and one Sb5+ atom to form distorted OMn2InSb trigonal pyramids that share corners with four OMn2InSb tetrahedra, corners with five OMnIn2Sb trigonal pyramids, and edges with three OMn2InSb trigonal pyramids. In the tenth O2- site, O2- is bonded to two Mn2+, one In3+, and one Sb5+ atom to form distorted OMn2InSb trigonal pyramids that share a cornercorner with one OMn3Sb tetrahedra, corners with five OMnIn2Sb trigonal pyramids, and edges with three OMn2InSb trigonal pyramids. In the eleventh O2- site, O2- is bonded to two Mn2+, one In3+, and one Sb5+ atom to form distorted OMn2InSb trigonal pyramids that share corners with two equivalent OMn3Sb tetrahedra, corners with five OMn2InSb trigonal pyramids, an edgeedge with one OMn2InSb tetrahedra, and edges with three OMn2InSb trigonal pyramids. In the twelfth O2- site, O2- is bonded to three Mn2+ and one Sb5+ atom to form a mixture of distorted edge and corner-sharing OMn3Sb trigonal pyramids.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-30. Materials Data on Mn2InSbO6 by Materials Project. https://doi.org/10.17188/1728031

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↗