Search NASA⌕ Search

DOE OSTI · 1707383

Materials Data on Zr10Al6O by Materials Project

Abstract

Zr10Al6O crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. there are eight inequivalent Zr sites. In the first Zr site, Zr is bonded in a 6-coordinate geometry to six Al atoms. There are a spread of Zr–Al bond distances ranging from 2.86–2.96 Å. In the second Zr site, Zr is bonded in a 6-coordinate geometry to six Al atoms. There are a spread of Zr–Al bond distances ranging from 2.86–2.95 Å. In the third Zr site, Zr is bonded in a distorted single-bond geometry to five Al and one O atom. There are a spread of Zr–Al bond distances ranging from 2.86–3.25 Å. The Zr–O bond length is 2.39 Å. In the fourth Zr site, Zr is bonded in a distorted single-bond geometry to five Al and one O atom. There are a spread of Zr–Al bond distances ranging from 2.86–3.26 Å. The Zr–O bond length is 2.36 Å. In the fifth Zr site, Zr is bonded in a distorted single-bond geometry to five Al and one O atom. There are a spread of Zr–Al bond distances ranging from 2.87–3.17 Å. The Zr–O bond length is 2.36 Å. In the sixth Zr site, Zr is bonded in a distorted single-bond geometry to five Al and one O atom. There are a spread of Zr–Al bond distances ranging from 2.87–3.19 Å. The Zr–O bond length is 2.37 Å. In the seventh Zr site, Zr is bonded in a distorted single-bond geometry to five Al and one O atom. There are a spread of Zr–Al bond distances ranging from 2.86–3.30 Å. The Zr–O bond length is 2.35 Å. In the eighth Zr site, Zr is bonded in a distorted single-bond geometry to five Al and one O atom. There are a spread of Zr–Al bond distances ranging from 2.86–3.30 Å. The Zr–O bond length is 2.37 Å. There are six inequivalent Al sites. In the first Al site, Al is bonded in a 10-coordinate geometry to nine Zr and one Al atom. The Al–Al bond length is 2.87 Å. In the second Al site, Al is bonded in a 10-coordinate geometry to nine Zr and one Al atom. In the third Al site, Al is bonded in a 10-coordinate geometry to nine Zr and one Al atom. The Al–Al bond length is 2.91 Å. In the fourth Al site, Al is bonded in a 9-coordinate geometry to nine Zr atoms. In the fifth Al site, Al is bonded in a 9-coordinate geometry to nine Zr atoms. In the sixth Al site, Al is bonded in a 10-coordinate geometry to nine Zr and one Al atom. There are three inequivalent O sites. In the first O site, O is bonded in an octahedral geometry to six Zr atoms. In the second O site, O is bonded in an octahedral geometry to six Zr atoms. In the third O site, O is bonded in an octahedral geometry to six Zr atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on Zr10Al6O by Materials Project. https://doi.org/10.17188/1707383

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↗