Search NASA⌕ Search

DOE OSTI · 1749108

Materials Data on Cd2P2H10CCl2O11 by Materials Project

Abstract

Cd2CP2H10O11Cl2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one Cd2CP2H10O11Cl2 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Cd–O bond distances ranging from 2.30–2.39 Å. In the second Cd2+ site, Cd2+ is bonded in a 6-coordinate geometry to five O2- and one Cl1- atom. There are a spread of Cd–O bond distances ranging from 2.23–2.42 Å. The Cd–Cl bond length is 2.92 Å. C2+ is bonded in a water-like geometry to two Cl1- atoms. There is one shorter (1.79 Å) and one longer (1.81 Å) C–Cl bond length. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.53 Å) and two longer (1.54 Å) P–O bond length. In the second P5+ site, P5+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of P–O bond distances ranging from 1.53–1.55 Å. There are ten inequivalent H+0.80+ sites. In the first H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the third H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fourth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fifth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the sixth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the seventh H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.68 Å) H–O bond length. In the eighth H+0.80+ site, H+0.80+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.69 Å) H–O bond length. In the ninth H+0.80+ site, H+0.80+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the tenth H+0.80+ site, H+0.80+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.66 Å) H–O bond length. There are eleven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H+0.80+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H+0.80+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H+0.80+ atoms. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H+0.80+ atoms. In the fifth O2- site, O2- is bonded in a water-like geometry to two H+0.80+ atoms. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Cd2+, one P5+, and one H+0.80+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Cd2+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Cd2+, one P5+, and one H+0.80+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Cd2+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cd2+, one P5+, and one H+0.80+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cd2+ and one P5+ atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one C2+ atom. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Cd2+ and one C2+ atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-05-02. Materials Data on Cd2P2H10CCl2O11 by Materials Project. https://doi.org/10.17188/1749108

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↗