Engineering Papers⌕ Search

DOE OSTI · 1757581

Materials Data on Rb4PS3O16 by Materials Project

Abstract

Rb4PS3O16 crystallizes in the orthorhombic P2_12_12 space group. The structure is three-dimensional. there are three inequivalent Rb sites. In the first Rb site, Rb is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of Rb–O bond distances ranging from 3.01–3.33 Å. In the second Rb site, Rb is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Rb–O bond distances ranging from 2.89–3.39 Å. In the third Rb site, Rb is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of Rb–O bond distances ranging from 2.96–3.33 Å. P is bonded in a tetrahedral geometry to four O atoms. There is two shorter (1.54 Å) and two longer (1.55 Å) P–O bond length. There are two inequivalent S sites. In the first S site, S is bonded in a tetrahedral geometry to four O atoms. All S–O bond lengths are 1.49 Å. In the second S site, S is bonded in a tetrahedral geometry to four O atoms. All S–O bond lengths are 1.49 Å. There are eight inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to three Rb and one S atom. In the second O site, O is bonded in a single-bond geometry to two Rb and one S atom. In the third O site, O is bonded in a single-bond geometry to two Rb and one P atom. In the fourth O site, O is bonded in a distorted single-bond geometry to two Rb and one P atom. In the fifth O site, O is bonded in a distorted single-bond geometry to three Rb and one S atom. In the sixth O site, O is bonded in a single-bond geometry to three Rb and one S atom. In the seventh O site, O is bonded in a distorted single-bond geometry to two Rb and one S atom. In the eighth O site, O is bonded in a distorted single-bond geometry to two equivalent Rb and one S atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-09-03. Materials Data on Rb4PS3O16 by Materials Project. https://doi.org/10.17188/1757581

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↗