Particulate material for a composite electrode and method of producing the particulate material

Patent metadata

Field	Value
Publication number	US-2024322123-A1
Application number	US-202218578090-A
Country	US
Kind code	A1
Filing date	Mar 14, 2022
Priority date	Jul 21, 2021
Publication date	Sep 26, 2024
Grant date	—

Abstract

The present invention discloses a method for producing a particulate material for a composite electrode comprising ball milling of: an electrode active component comprising a transition metal M having a pristine oxidation state of 5+ and optionally 4+ and/or 3+; at least one second additional oxide selected from the group consisting of Li, Al, Cu, Fe, Cr, Mn, Sn, Mo, Ni, Sn, Ag, Ru or Ti and; a first lithium-comprising sulphide compound comprising an element X, X being P, Ge, Si or Sn, wherein an electronically conductive component is added to the electrode active component and the first lithium-comprising sulphide compound, thereby obtaining the particulate material. The present invention further discloses a particulate material obtained by the method, a composite cathode comprising the particulate material and a battery cell comprising the composite cathode.

First claim

1 : A method for producing a particulate material for a composite electrode, comprising:
ball milling of (a) an electrode active component comprising a first transition metal M oxide having a pristine oxidation state of 5+ and optionally 4+ and/or 3+, (b) at least one second additional oxide selected from the group consisting of Li, Al, Cu, Fe, Cr, Mn, Sn, Mo, Ni, Sn, Ag, Ru or Ti, and (c) a first lithium-comprising sulphide compound comprising an element X, wherein X is P, Ge, Si or Sn, and wherein an electronically conductive conponent is added to the electrode active component, said first transition metal M oxide and said at least one second additional oxide and the first lithium-comprising sulphide compound, thereby obtaining the particulate material.

2 : The method according to claim 1 , wherein the first transition metal M is vanadium (n).

3 : The method according to claim 2 , wherein the electrode active component comprises V 2 O 5 , V 2 O 3 , VO, H 3 V 5 O 7 , H 2 V 3 O 8 , or a mixture of any two or more thereof.

4 : The method according to claim 1 , wherein the first lithium-comprising sulphide compound comprises in a pristine state a Li—S—X bond.

5 : The method according to claim 1 , wherein the first lithium-comprising sulphide compound comprises a LiPS-based component, a LiGePS-based component, a LiSiPS-based component, a LiSnPS-based component, a LiSiSnPS-based component, a LiGeSnPS-based component, or a mixture of any two or more thereof.

6 : The method according to claim 1 , wherein the first lithium-comprising sulphide compound comprises Li 2 S and P 2 S 5 .

7 : The method according to claim 6 , comprising a first ball milling step of the first lithium-comprising sulphide compound, thereby obtaining a second lithium-comprising sulphide compound which comprises in a pristine state a Li—S—X bond or comprises a LiPS-based component, a LiGePS-based component, a LiSiPS-based component, a LiSnPS-based component, a LiSiSnPS-based component, a LiGeSnPS-based component, or a mixture of any two or more thereof, and a second ball milling step of the second lithium-comprising sulphide compound and the electrode active component, thereby obtaining particulate material.

8 : The method according to claim 1 , wherein a solvent is added during the ball milling.

9 : A particulate material for a composite electrode comprising:
an electrode active component comprising a first transition metal M oxide having an oxidation state in the particulate material of 3+, 4+, 5+, and one or more of, an at least one additional second oxide selected from the group consisting of Li, Al, Cu, Fe, Cr, Mn, Sn, Mo, Ni, Sn, Ag, Ru or Ti a lithium-comprising sulphide compound comprising an element X, wherein X is P, Ge, Si or Sri, and an electronically conductive component, preferably comprising a carbon-comprising component, wherein the particulate material comprises one or more of the following bonds: X—S x —X, M y S z , M u X v , wherein x is between 0 and 2, y is between 0 and 2, z is between 0 and 4 and u is between 0 and 2.

10 : The particulate material according to claim 9 , wherein the first transition metal M is vanadium (V), and wherein the electrode active component comprises V 2 O 5 , V 2 O 3 , VO, H 3 V 5 O 7 , H 2 V 3 O 8 , or a mixture of any two or more thereof.

11 : The particulate material according to claim 9 , wherein the lithium-comprising sulphide compound comprises a LiPS-based component, a LiGePS-based component, a LiSiPS-based component, a LiSnPS-based component, a LiSiSnPS-based component, a LiGeSnPS-based component, or a mixture of any two or more thereof.

12 : The particulate material according to claim 9 , comprising the electrode active component and the lithium-comprising sulphide compound in a ratio of between 0.1 and 0.9, wherein the ratio is expressed as the weight of the electrode active component divided by the sum of the weight of the electrode active component and the weight of the lithium-comprising sulphide compound.

13 : The particulate material according to claim 9 , obtained by a method, comprising:
ball milling of (a) an electrode active component comprising a first transition metal M oxide having a pristine oxidation state of 5+ and optionally 4+ and/or 3+, and one or more of (b) at least one second additional oxide selected from the group consisting of Li, Al, Cu, Fe, Cr, Mn, Sn, Mo, Ni, Sn, Ag, Ru or Ti, and (c) a first lithium-comprising sulphide compound comprising an element X, wherein X is P, Ge, Si or Sn, and wherein an electronically conductive component is added to the electrode active component, said first transition metal M oxide and said at least one second additional oxide and the first lithium-comprising sulphide compound, thereby obtaining the particulate material.

14 : A composite cathode comprising the particulate material according to claim 9 .

15 : A batter, cell comprising a composite cathode according to claim 14 .

Assignees

• Belenos Clean Power Holding Ag

Inventors

• Perego Daniele
• Tanaka Shiro
• Pitteloud Cedric
• Yamaji Nana
• Nishijima Motoaki

Classifications

• H01M2004/028

  Positive electrodes · CPC title

• H01M4/625 Primary

  Carbon or graphite · CPC title

• H01M4/5815

  Sulfides · CPC title

• H01M4/483

  for non-aqueous cells (H01M4/485 takes precedence) · CPC title

• H01M4/136

  Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title