Search NASA⌕ Search

DOE OSTI · 1706009

Materials Data on TeH15C5NOF6 by Materials Project

Abstract

H2C2NH5FCH2CF2HCH5TeOF3 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four hydrogen molecules, four C2NH5F clusters, four CH2CF2H clusters, and four CH5TeOF3 clusters. In each C2NH5F cluster, there are two inequivalent C+0.40- sites. In the first C+0.40- site, C+0.40- is bonded in a trigonal planar geometry to one N3- and two H1+ atoms. The C–N bond length is 1.27 Å. There is one shorter (1.09 Å) and one longer (1.11 Å) C–H bond length. In the second C+0.40- site, C+0.40- is bonded in a distorted trigonal non-coplanar geometry to one N3- and two H1+ atoms. The C–N bond length is 1.45 Å. Both C–H bond lengths are 1.10 Å. N3- is bonded in a trigonal planar geometry to two C+0.40- and one H1+ atom. The N–H bond length is 1.50 Å. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to one N3- and one F1- atom. The H–F bond length is 1.03 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. F1- is bonded in a single-bond geometry to one H1+ atom. In each CH2CF2H cluster, there are two inequivalent C+0.40- sites. In the first C+0.40- site, C+0.40- is bonded in a distorted trigonal planar geometry to one C+0.40-, one H1+, and one F1- atom. The C–C bond length is 1.46 Å. The C–H bond length is 1.51 Å. The C–F bond length is 1.34 Å. In the second C+0.40- site, C+0.40- is bonded in a distorted water-like geometry to one C+0.40- and two H1+ atoms. There is one shorter (1.10 Å) and one longer (1.12 Å) C–H bond length. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. In the second H1+ site, H1+ is bonded in a distorted linear geometry to one C+0.40- and one F1- atom. The H–F bond length is 1.05 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one H1+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one C+0.40- atom. In each CH5TeOF3 cluster, C+0.40- is bonded in a tetrahedral geometry to two H1+, one O2-, and one F1- atom. Both C–H bond lengths are 1.10 Å. The C–O bond length is 1.34 Å. The C–F bond length is 1.51 Å. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one Te2- atom. The H–Te bond length is 1.69 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. In the third H1+ site, H1+ is bonded in a distorted single-bond geometry to two F1- atoms. There is one shorter (0.96 Å) and one longer (1.62 Å) H–F bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one Te2- atom. The H–Te bond length is 1.67 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.40- atom. Te2- is bonded in a distorted rectangular see-saw-like geometry to two H1+, one O2-, and one F1- atom. The Te–O bond length is 2.11 Å. The Te–F bond length is 2.06 Å. O2- is bonded in a distorted single-bond geometry to one C+0.40- and one Te2- atom. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Te2- atom. In the second F1- site, F1- is bonded in a single-bond geometry to one H1+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to one C+0.40- and one H1+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on TeH15C5NOF6 by Materials Project. https://doi.org/10.17188/1706009

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↗