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4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on P2S5 by Materials Project

P2S5 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two P2S5 clusters. there are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the second P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the third P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the fourth P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. There are ten inequivalent S2- sites. In the first S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the second S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the fourth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the fifth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the sixth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the seventh S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the eighth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the ninth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the tenth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NbP4(S2Cl)5 by Materials Project

NbCl5(P2S5)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one NbCl5 cluster and two P2S5 clusters. In the NbCl5 cluster, Nb5+ is bonded to six Cl1- atoms to form edge-sharing NbCl6 octahedra. There are a spread of Nb–Cl bond distances ranging from 2.28–2.60 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Nb5+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Nb5+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Nb5+ atom. In the fourth Cl1- site, Cl1- is bonded in a water-like geometry to two equivalent Nb5+ atoms. In each P2S5 cluster, there are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the second P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the third P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the fourth P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. There are ten inequivalent S2- sites. In the first S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the second S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the fourth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the fifth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the sixth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the seventh S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the eighth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the ninth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the tenth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaP4(S2Cl)5 by Materials Project

TaCl5(P2S5)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two P2S5 clusters and one TaCl5 cluster. In each P2S5 cluster, there are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the second P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the third P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. In the fourth P5+ site, P5+ is bonded to four S2- atoms to form corner-sharing PS4 tetrahedra. There are one shorter (1.92 Å) and three longer (2.12 Å) P–S bond lengths. There are ten inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the second S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the third S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the fourth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the fifth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the sixth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the seventh S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the eighth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the ninth S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the tenth S2- site, S2- is bonded in a water-like geometry to two P5+ atoms. In the TaCl5 cluster, Ta5+ is bonded to six Cl1- atoms to form edge-sharing TaCl6 octahedra. There are a spread of Ta–Cl bond distances ranging from 2.27–2.59 Å. There are five inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the fifth Cl1- site, Cl1- is bonded in a water-like geometry to two equivalent Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Lithium Dendrite-Free Li 7 N 2 I-LiOH Solid Electrolytes for High Energy Lithium Batteries

All-solid-state lithium batteries (ASSLBs) hold great potential to improve the safety and energy density of today’s lithium-ion batteries by using non-flammable inorganic solid electrolytes. Solid electrolytes (SEs) are believed to prevent Li dendrite growth because of high mechanical strength and high Li+ transference numbers. Significant advances in SE have been achieved, among which, Li7La3Zr2O12 (LLZO) and Li2S–P2S5 (LPS) are the most promising SEs for bulk-type solid-state lithium batteries because of high ionic conductivities (>10-4 S/cm2). However, in contrast to our expectations, the growth of lithium dendrites is not suppressed but is facilitated in LLZOs and LPSs regardless of dopants, porosity, and crystallinity of the electrolytes. Despite the unity Li transference number and over two-times of shear modulus than that of Li metal, the critical current densities for Li plating and stripping in these SEs are less than 1.0 mA cm-2, which is one-fourth to one-tenth of that in liquid electrolytes at room temperature. The incompatibility between LLZO and LPS with Li metal seriously limits the energy density of all-solid-state batteries. The mechanism for lithium dendrite formation and growth in SEs are still disputable. Lack of understanding of the Li dendrite formation mechanism seriously impeded the development of solid-state lithium batteries. The development of the criterion for Li dendrite suppression is essential for the success of solid electrolyte lithium batteries. In this project, a criterion for Li dendrite suppression will be developed through thermodynamics and kinetics analysis of lithium dendrite nucleation/growth, which will guide the solid-state electrolyte design. Li7N2I-LiOH, Li5NI2-LiOH and Li3YCl6 solid electrolyte with high ionic conductivity and low electronic conductivity were used to validate the criterion for lithium dendrite suppression. Different surface modifications were also explored to enhance the dendrite suppression capability of SSEs.

25 ENERGY STORAGE↗