Search NASA⌕ Search

DOE OSTI · 1283641

Materials Data on Sm25Ni49P33 by Materials Project

Abstract

Sm25Ni49P33 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are fifteen inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to twelve Ni and four P atoms. There are a spread of Sm–Ni bond distances ranging from 2.91–3.15 Å. There are two shorter (3.05 Å) and two longer (3.06 Å) Sm–P bond lengths. In the second Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.98–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.95–3.00 Å. In the third Sm site, Sm is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.95–3.10 Å. There are two shorter (2.95 Å) and four longer (2.99 Å) Sm–P bond lengths. In the fourth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.96–3.01 Å. In the fifth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.96–3.01 Å. In the sixth Sm site, Sm is bonded to six Ni and six P atoms to form face-sharing SmNi6P6 cuboctahedra. All Sm–Ni bond lengths are 3.01 Å. All Sm–P bond lengths are 2.99 Å. In the seventh Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.98–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.95–3.00 Å. In the eighth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are four shorter (2.98 Å) and two longer (3.00 Å) Sm–P bond lengths. In the ninth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.96–3.01 Å. In the tenth Sm site, Sm is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.96–3.10 Å. There are two shorter (2.95 Å) and four longer (2.99 Å) Sm–P bond lengths. In the eleventh Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.98–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.95–3.00 Å. In the twelfth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are four shorter (2.98 Å) and two longer (3.00 Å) Sm–P bond lengths. In the thirteenth Sm site, Sm is bonded in a 12-coordinate geometry to twelve Ni and four equivalent P atoms. There are a spread of Sm–Ni bond distances ranging from 2.91–3.15 Å. All Sm–P bond lengths are 3.05 Å. In the fourteenth Sm site, Sm is bonded to six Ni and six P atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. There are two shorter (2.99 Å) and four longer (3.00 Å) Sm–Ni bond lengths. All Sm–P bond lengths are 2.99 Å. In the fifteenth Sm site, Sm is bonded to six Ni and six P atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. There are two shorter (2.99 Å) and four longer (3.00 Å) Sm–Ni bond lengths. All Sm–P bond lengths are 2.99 Å. There are twenty-eight inequivalent Ni sites. In the first Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are two shorter (2.31 Å) and two longer (2.33 Å) Ni–P bond lengths. In the second Ni site, Ni is bonded in a distorted single-bond geometry to two Sm, four Ni, and one P atom. All Ni–Ni bond lengths are 2.45 Å. The Ni–P bond length is 2.17 Å. In the third Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.28 Å. In the fourth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the fifth Ni site, Ni is bonded in a 3-coordinate geometry to three Sm, one Ni, and three P atoms. The Ni–Ni bond length is 2.50 Å. There are one shorter (2.22 Å) and two longer (2.36 Å) Ni–P bond lengths. In the sixth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are two shorter (2.31 Å) and two longer (2.33 Å) Ni–P bond lengths. In the seventh Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the eighth Ni site, Ni is bonded in a 3-coordinate geometry to three Sm, one Ni, and three P atoms. The Ni–Ni bond length is 2.50 Å. There are one shorter (2.22 Å) and two longer (2.36 Å) Ni–P bond lengths. In the ninth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the tenth Ni site, Ni is bonded in a 10-coordinate geometry to two equivalent Sm and eight Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.39–2.50 Å. In the eleventh Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the twelfth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are one shorter (2.25 Å) and two longer (2.28 Å) Ni–P bond lengths. In the thirteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are two shorter (2.32 Å) and two longer (2.33 Å) Ni–P bond lengths. In the fourteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.34 Å. In the fifteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the sixteenth Ni site, Ni is bonded in a 10-coordinate geometry to two equivalent Sm and eight Ni atoms. In the seventeenth Ni site, Ni is bonded in a 3-coordinate geometry to three Sm, one Ni, and three P atoms. There are one shorter (2.22 Å) and two longer (2.36 Å) Ni–P bond lengths. In the eighteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.34 Å. In the nineteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.34 Å. In the twentieth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are two shorter (2.23 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-first Ni site, Ni is bonded in a 3-coordinate geometry to six Sm and three P atoms. There are two shorter (2.26 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-second Ni site, Ni is bonded in a 3-coordinate geometry to six Sm and three P atoms. There are two shorter (2.26 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-third Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are two shorter (2.27 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-fourth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.28 Å. In the twenty-fifth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are two shorter (2.23 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-sixth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are one shorter (2.25 Å) and two longer (2.28 Å) Ni–P bond lengths. In the twenty-seventh Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.28 Å. In the twenty-eighth Ni site, Ni is bonded in a distorted single-bond geometry to two equivalent Sm, four equivalent Ni, and one P atom. The Ni–P bond length is 2.17 Å. There are nineteen inequivalent P sites. In the first P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the second P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the third P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the fourth P site, P is bonded in a 9-coordinate geometry to four equivalent Sm and five Ni atoms. In the fifth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the sixth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the seventh P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the eighth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the ninth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the tenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the eleventh P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the twelfth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the thirteenth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the fourteenth P site, P is bonded in a 9-coordinate geometry to two equivalent Sm and seven Ni atoms. In the fifteenth P site, P is bonded in a 9-coordinate geometry to two equivalent Sm and seven Ni atoms. In the sixteenth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the seventeenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the eighteenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the nineteenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on Sm25Ni49P33 by Materials Project. https://doi.org/10.17188/1283641

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↗