Engineering Papers⌕ Search

DOE OSTI · 1743881

Materials Data on Te10Rh7 by Materials Project

Abstract

Rh7Te10 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are seven inequivalent Rh sites. In the first Rh site, Rh is bonded to six Te atoms to form a mixture of edge and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 48–55°. There are a spread of Rh–Te bond distances ranging from 2.63–2.72 Å. In the second Rh site, Rh is bonded to six Te atoms to form a mixture of distorted edge, face, and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 47–56°. There are a spread of Rh–Te bond distances ranging from 2.63–2.76 Å. In the third Rh site, Rh is bonded to six Te atoms to form a mixture of distorted edge, face, and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 48–55°. There are a spread of Rh–Te bond distances ranging from 2.62–2.77 Å. In the fourth Rh site, Rh is bonded to six Te atoms to form a mixture of distorted edge, face, and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 48–55°. There are a spread of Rh–Te bond distances ranging from 2.63–2.78 Å. In the fifth Rh site, Rh is bonded to six Te atoms to form a mixture of distorted edge, face, and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 48–56°. There are a spread of Rh–Te bond distances ranging from 2.62–2.81 Å. In the sixth Rh site, Rh is bonded to six Te atoms to form a mixture of distorted edge, face, and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 47–56°. There are a spread of Rh–Te bond distances ranging from 2.71–2.74 Å. In the seventh Rh site, Rh is bonded to six Te atoms to form a mixture of distorted edge, face, and corner-sharing RhTe6 octahedra. The corner-sharing octahedra tilt angles range from 48–56°. There are a spread of Rh–Te bond distances ranging from 2.71–2.74 Å. There are ten inequivalent Te sites. In the first Te site, Te is bonded to four Rh atoms to form a mixture of distorted edge and corner-sharing TeRh4 trigonal pyramids. In the second Te site, Te is bonded in a distorted rectangular see-saw-like geometry to four Rh atoms. In the third Te site, Te is bonded in a distorted rectangular see-saw-like geometry to four Rh atoms. In the fourth Te site, Te is bonded to four Rh atoms to form a mixture of distorted edge and corner-sharing TeRh4 trigonal pyramids. In the fifth Te site, Te is bonded in a 3-coordinate geometry to three Rh atoms. In the sixth Te site, Te is bonded in a 5-coordinate geometry to five Rh atoms. In the seventh Te site, Te is bonded to four Rh atoms to form a mixture of distorted edge and corner-sharing TeRh4 trigonal pyramids. In the eighth Te site, Te is bonded to four Rh atoms to form a mixture of distorted edge and corner-sharing TeRh4 trigonal pyramids. In the ninth Te site, Te is bonded in a 5-coordinate geometry to five Rh atoms. In the tenth Te site, Te is bonded in a 5-coordinate geometry to five Rh atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-30. Materials Data on Te10Rh7 by Materials Project. https://doi.org/10.17188/1743881

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↗