Search NASA⌕ Search

DOE OSTI · 1743412

Materials Data on La2TeMo6O35 by Materials Project

Abstract

La2Te(Mo2O11)3O2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional and consists of two hydrogen peroxide molecules and one La2Te(Mo2O11)3 framework. In the La2Te(Mo2O11)3 framework, there are two inequivalent La sites. In the first La site, La is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of La–O bond distances ranging from 2.36–2.76 Å. In the second La site, La is bonded in a 7-coordinate geometry to eight O atoms. There are a spread of La–O bond distances ranging from 2.38–3.32 Å. There are six inequivalent Mo sites. In the first Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.76–2.30 Å. In the second Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.74–2.28 Å. In the third Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.77–2.30 Å. In the fourth Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.77–2.30 Å. In the fifth Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.71–2.40 Å. In the sixth Mo site, Mo is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Mo–O bond distances ranging from 1.71–2.36 Å. Te is bonded in an octahedral geometry to six O atoms. There are a spread of Te–O bond distances ranging from 1.94–1.99 Å. There are thirty-three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one La and one Mo atom. In the second O site, O is bonded in a bent 150 degrees geometry to one La and one Mo atom. In the third O site, O is bonded in a single-bond geometry to one O atom. The O–O bond length is 1.23 Å. In the fourth O site, O is bonded in a single-bond geometry to one O atom. The O–O bond length is 1.22 Å. In the fifth O site, O is bonded in a single-bond geometry to one Mo atom. In the sixth O site, O is bonded in a single-bond geometry to one Mo atom. In the seventh O site, O is bonded in a 3-coordinate geometry to two Mo and one Te atom. In the eighth O site, O is bonded in a 3-coordinate geometry to two Mo and one Te atom. In the ninth O site, O is bonded in a bent 150 degrees geometry to one La and one Mo atom. In the tenth O site, O is bonded in a bent 150 degrees geometry to one La and one Mo atom. In the eleventh O site, O is bonded in a single-bond geometry to one Mo atom. In the twelfth O site, O is bonded in a single-bond geometry to one Mo atom. In the thirteenth O site, O is bonded in a distorted trigonal planar geometry to one La and two Mo atoms. In the fourteenth O site, O is bonded in a distorted trigonal planar geometry to one La and two Mo atoms. In the fifteenth O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mo and one Te atom. In the sixteenth O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mo and one Te atom. In the seventeenth O site, O is bonded in a single-bond geometry to one La and one O atom. The O–O bond length is 2.06 Å. In the eighteenth O site, O is bonded in a single-bond geometry to one La atom. In the nineteenth O site, O is bonded in a bent 120 degrees geometry to one La and two O atoms. There is one shorter (1.77 Å) and one longer (2.13 Å) O–O bond length. In the twentieth O site, O is bonded in a distorted bent 120 degrees geometry to one La and one O atom. The O–O bond length is 1.72 Å. In the twenty-first O site, O is bonded in a 3-coordinate geometry to one La and two O atoms. In the twenty-second O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the twenty-third O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the twenty-fourth O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the twenty-fifth O site, O is bonded in a bent 120 degrees geometry to two Mo atoms. In the twenty-sixth O site, O is bonded in a distorted water-like geometry to one La and one Mo atom. In the twenty-seventh O site, O is bonded in a distorted water-like geometry to one La and one Mo atom. In the twenty-eighth O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mo and one Te atom. In the twenty-ninth O site, O is bonded in a distorted trigonal non-coplanar geometry to two Mo and one Te atom. In the thirtieth O site, O is bonded in a bent 150 degrees geometry to one La and one Mo atom. In the thirty-first O site, O is bonded in a bent 150 degrees geometry to one La and one Mo atom. In the thirty-second O site, O is bonded in a bent 120 degrees geometry to two O atoms. In the thirty-third O site, O is bonded in a bent 120 degrees geometry to two O atoms.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on La2TeMo6O35 by Materials Project. https://doi.org/10.17188/1743412

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↗