New method for the preparation of a li-p-s product and corresponding products

Patent metadata

Field	Value
Publication number	US-2025226441-A1
Application number	US-202519093179-A
Country	US
Kind code	A1
Filing date	Mar 27, 2025
Priority date	Sep 6, 2019
Publication date	Jul 10, 2025
Grant date	—

Abstract

The present invention concerns a new method for the preparation of a Li-P-S product, as well as the products obtainable by said methods, and uses thereof especially as solid electrolytes.

First claim

1 - 16 . (canceled)

17 . A product of formula Li 7 P 3 S 11 , comprising a crystal structure and a volume V per formula unit at room temperature, using the cell parameters acquired at standard atmosphere, comprised between 407 and 412 angstrom cube, as measured by X-Ray Diffraction, using a Bruker D8 diffractometer with Cu Kα radiation.

18 . A method of using the product of 17 , the method comprising using the product, alone or in combination with any crystalline or amorphous conductive Li-material, as solid electrolyte.

19 . A solid electrolyte comprising at least the product of claim 17 .

20 . A battery comprising at least the product of claim 17 .

21 . The product of claim 17 , having lattice parameters a=12.40 Å, b=6.04 Å and c=12.52 Å, as measured by X-Ray Diffraction, using a Bruker D8 diffractometer with Cu Ka radiation.

22 . The method of claim 18 , wherein the crystalline conductive Li-material is beta-Li 3 PS 4 and amorphous conductive Li-material is glassy Li 3 PS 4 .

23 . The solid electrolyte of claim 19 , further comprising any crystalline or amorphous conductive Li-material.

24 . The battery of claim 20 , composed of a positive and a negative electrode with electroactive substances able to reversibly intercalate and de-intercalate lithium ions.

25 . The battery of claim 24 , wherein the positive electrode is formed with an electroactive substance selected from the group consisting of a composite metal chalcogenide represented by a general formula of LiMY 2 , wherein M denotes at least one species of transition metals such as Co, Ni, Fe, Mn, Cr, Al and V; and Y denotes a chalcogen.

26 . The battery of claim 24 , wherein the positive electrode is formed with electroactive substance and comprises a lithiated or partially lithiated transition metal oxyanion-based electrode material of the nominal formula:
AB(XO 4 ) f E 1-f , wherein A is lithium, which may be partially substituted by another alkali metal representing less that 20% of the A metals, B is a main redox transition metal at the oxidation level of +2 chosen among Fe, Mn, Ni or mixtures thereof, which may be partially substituted by one or more additional metal at oxidation levels between +1 and +5 and representing less than 35% of the main +2 redox metals, including 0, XO 4 is any oxyanion in which X is either P, S, V, Si, Nb, Mo or a combination thereof, E is a fluoride, hydroxide or chloride anion, and f is the molar fraction of XO 4 oxyanion, generally comprised between 0.75 and 1.

27 . The battery of claims 25 , wherein the chalcogen Y is O or S.

Assignees

• Specialty Operations France
• Centre Nat Rech Scient
• Univ Picardie

Inventors

• Braida Marc-David
• Kudu Ömer
• Masquelier Christian
• Le Mercier Thierry
• Fleutot Benoit

Classifications

• H01M2300/0068

  inorganic · CPC title

• H01B1/10 Primary

  sulfides · CPC title

• C01P2006/40

  Electric properties · CPC title

• C01P2002/82

  by IR- or Raman-data · CPC title

• C01P2002/77

  by unit-cell parameters, atom positions or structure diagrams · CPC title