Search NASA⌕ Search

DOE OSTI · 1270979

Materials Data on PH16C6S2NO4 by Materials Project

Abstract

(CH3)2C4PNH10S2O4 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight methane molecules and four C4PNH10S2O4 clusters. In each C4PNH10S2O4 cluster, there are four inequivalent C1- sites. In the first C1- site, C1- is bonded in a distorted water-like geometry to one P5+ and two H1+ atoms. The C–P bond length is 1.85 Å. Both C–H bond lengths are 1.10 Å. In the second C1- site, C1- is bonded in a trigonal non-coplanar geometry to three H1+ and one S2- atom. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. The C–S bond length is 1.78 Å. In the third C1- site, C1- is bonded in a trigonal non-coplanar geometry to three H1+ and one S2- atom. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. The C–S bond length is 1.77 Å. In the fourth C1- site, C1- is bonded in a distorted water-like geometry to one P5+ and two H1+ atoms. The C–P bond length is 1.85 Å. Both C–H bond lengths are 1.10 Å. P5+ is bonded in a trigonal non-coplanar geometry to two C1- and one N3- atom. The P–N bond length is 1.79 Å. N3- is bonded in a trigonal planar geometry to one P5+ and two S2- atoms. Both N–S bond lengths are 1.72 Å. There are ten inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to one C1-, one N3-, and two O2- atoms to form distorted corner-sharing SCNO2 tetrahedra. There is one shorter (1.44 Å) and one longer (1.45 Å) S–O bond length. In the second S2- site, S2- is bonded to one C1-, one N3-, and two O2- atoms to form distorted corner-sharing SCNO2 tetrahedra. Both S–O bond lengths are 1.45 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one S2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one S2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one S2- atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one S2- atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-05-29. Materials Data on PH16C6S2NO4 by Materials Project. https://doi.org/10.17188/1270979

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↗