Search NASA⌕ Search

DOE OSTI · 1681956

Materials Data on LiZn(BH4)3 by Materials Project

Abstract

ZnLi(BH4)3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five H+0.50+ atoms. There are a spread of Li–H bond distances ranging from 1.94–2.09 Å. In the second Li1+ site, Li1+ is bonded to five H+0.50+ atoms to form distorted LiH5 trigonal bipyramids that share corners with three BH4 tetrahedra and an edgeedge with one BH4 tetrahedra. There are a spread of Li–H bond distances ranging from 1.90–2.17 Å. There are two inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded in a 5-coordinate geometry to five H+0.50+ atoms. There are a spread of Zn–H bond distances ranging from 1.81–2.07 Å. In the second Zn2+ site, Zn2+ is bonded in a 6-coordinate geometry to six H+0.50+ atoms. There are a spread of Zn–H bond distances ranging from 1.79–2.19 Å. There are six inequivalent B3- sites. In the first B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a cornercorner with one LiH5 trigonal bipyramid. There are a spread of B–H bond distances ranging from 1.20–1.26 Å. In the second B3- site, B3- is bonded in a tetrahedral geometry to four H+0.50+ atoms. There are a spread of B–H bond distances ranging from 1.22–1.26 Å. In the third B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a cornercorner with one LiH5 trigonal bipyramid. There are a spread of B–H bond distances ranging from 1.21–1.25 Å. In the fourth B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a cornercorner with one LiH5 trigonal bipyramid. There is three shorter (1.22 Å) and one longer (1.26 Å) B–H bond length. In the fifth B3- site, B3- is bonded in a tetrahedral geometry to four H+0.50+ atoms. There are a spread of B–H bond distances ranging from 1.19–1.26 Å. In the sixth B3- site, B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share an edgeedge with one LiH5 trigonal bipyramid. There are a spread of B–H bond distances ranging from 1.21–1.26 Å. There are twenty-four inequivalent H+0.50+ sites. In the first H+0.50+ site, H+0.50+ is bonded in a 3-coordinate geometry to two Li1+ and one B3- atom. In the second H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Li1+ and one B3- atom. In the third H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one B3- atom. In the fourth H+0.50+ site, H+0.50+ is bonded in a water-like geometry to one Li1+ and one B3- atom. In the fifth H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Zn2+ and one B3- atom. In the sixth H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Zn2+ and one B3- atom. In the seventh H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Li1+ and one B3- atom. In the eighth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one Zn2+ and one B3- atom. In the ninth H+0.50+ site, H+0.50+ is bonded in a water-like geometry to one Zn2+ and one B3- atom. In the tenth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Zn2+ and one B3- atom. In the eleventh H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Zn2+ and one B3- atom. In the twelfth H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Zn2+ and one B3- atom. In the thirteenth H+0.50+ site, H+0.50+ is bonded in a bent 120 degrees geometry to one Li1+ and one B3- atom. In the fourteenth H+0.50+ site, H+0.50+ is bonded in a water-like geometry to one Li1+ and one B3- atom. In the fifteenth H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Li1+ and one B3- atom. In the sixteenth H+0.50+ site, H+0.50+ is bonded in a distorted bent 150 degrees geometry to one Li1+ and one B3- atom. In the seventeenth H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Li1+ and one B3- atom. In the eighteenth H+0.50+ site, H+0.50+ is bonded in a bent 120 degrees geometry to one Zn2+ and one B3- atom. In the nineteenth H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one B3- atom. In the twentieth H+0.50+ site, H+0.50+ is bonded in a water-like geometry to one Zn2+ and one B3- atom. In the twenty-first H+0.50+ site, H+0.50+ is bonded in a water-like geometry to one Zn2+ and one B3- atom. In the twenty-second H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one B3- atom. In the twenty-third H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one B3- atom. In the twenty-fourth H+0.50+ site, H+0.50+ is bonded in a water-like geometry to one Zn2+ and one B3- atom.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

2020-04-29. Materials Data on LiZn(BH4)3 by Materials Project. https://doi.org/10.17188/1681956

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↗