Ionically conductive compounds and related uses

Patent metadata

Field	Value
Publication number	US-2018342766-A1
Application number	US-201816047130-A
Country	US
Kind code	A1
Filing date	Jul 27, 2018
Priority date	Nov 24, 2015
Publication date	Nov 29, 2018
Grant date	—

Abstract

Articles, compositions, and methods involving ionically conductive compounds are provided. The disclosed ionically conductive compounds may be incorporated into an electrochemical cell (e.g., a lithium-sulfur electrochemical cell, a lithium-ion electrochemical cell, an intercalated-cathode based electrochemical cell) as, for example, a protective layer for an electrode, a solid electrolyte layer, and/or any other appropriate component within the electrochemical cell. In certain embodiments, electrode structures and/or methods for making electrode structures including a layer comprising an ionically conductive compound described herein are provided.

First claim

What is claimed is:

1 . A compound of formula (I):
Li 2x S x+w+5z M y P 2z   (I)
wherein: the compound of formula (I) has a cubic structure,
M is selected from the group consisting of Lanthanides, Group 3, Group 4, Group 5, Group 6, Group 7, Group 8, Group 9, Group 12, Group 13, and Group 14 atoms, and combinations thereof,
x is 8-16,
y is 0.1-6,
w is 0.1-15, and
z is 0.1-3.

2 . A compound as in claim 1 , wherein the compound of formula (I) is selected from the group consisting of Li 10 S 12 SiP 2 , Li 12 S 13 SiP 2 , Li 16 S 1s SiP 2 , Li 20 S 17 SiP 2 , Li 21 S 175 SiP 2 , Li 22 S 18 SiP 2 , Li 24 S 19 SiP 2 , Li 28 S 21 SiP 2 , Li 24 S 19 GeP 2 , Li 21 SiP 2 S 175 , Li 21 La 0.5 Si 1.5 PS 16.75 , Li 21 LaSiPS 16.5 , Li 21 La 2 PS 16 , Li 21 AlP 2 S 17 , Li 17 AlP 2 S 15 , Li 17 Al 2 PS 14 , Li 11 AlP 2 S 12 , Li 11 AlP 2 S 12 , Li 21 AlSiPS 16.5 , Li 21 Al 0.5 Si 1.5 PS 16.75 , Li 21 AlSi 2 S 16 , Li 21 BP 2 S 17 , Li 23 Si 2 PS 17 , and Li 21 GaP 2 S 17 .

3 . A compound as in claim 1 , wherein M is selected from the group consisting of silicon, tin, germanium, zinc, iron, zirconium, aluminum, and combinations thereof.

4 . A compound as in claim 1 , wherein M is silicon.

5 . A compound as in claim 1 , wherein x is 10 or greater.

6 . A compound as in claim 1 , wherein x is 10-14.

7 . A compound as in claim 1 , wherein z is 1 and/or y is 1.

8 . A method for forming a plurality of particles, comprising:
heating a mixture of precursors comprising atoms of the elements Li, S, P, and M to a temperature ranging from 400° C. to 900° C.; cooling the mixture; and forming a plurality of particles comprising a compound of formula (I):
Li 2x S x+w+5z M y P 2z   (I)

wherein: the compound of formula (I) has a cubic structure,
M is selected from the group consisting of Lanthanides, Group 3, Group 4, Group 5, Group 6, Group 7, Group 8, Group 9, Group 12, Group 13, and Group 14 atoms, and combinations thereof;
x is 8-16,
y is 0.1-6,
w is 0.1-15, and
z is 0.1-3.

9 . A method for forming a plurality of particles as in claim 8 , wherein:
the mixture comprises xLi 2 S, yMS a , and/or zP b S c ,
wherein:
a is 0-8;
b is 0-2; and
c is 0-8, such that b+c is 1 or greater.

10 . A method for forming a plurality of particles as in claim 8 , wherein, prior to heating, the mixture is mixed by ball milling.

11 . A method for forming a plurality of particles as in claim 8 , wherein x is 10 or greater.

12 . A method for forming a plurality of particles as in claim 8 , wherein x is greater than or equal to 10 and less than or equal to 14.

13 . A method for forming a plurality of particles as in claim 8 , wherein z is 1 and/or y is 1.

14 . A method for forming a plurality of particles as in claim 8 , wherein heating the mixture occurs at a pressure of between 0.1 MPa and 0.3 MPa.

15 . A method for forming a plurality of particles as in claim 8 , comprising depositing the plurality of particles on a layer by aerosol deposition.

16 . A method for forming a plurality of particles as in claim 8 , comprising depositing the plurality of particles on a layer by vacuum deposition.

17 . A method for forming a plurality of particles as in claim 8 , comprising depositing the plurality of particles on an electrode.

18 . A method for forming a plurality of particles as in claim 8 , comprising depositing the plurality of particles on a lithium metal layer.

19 . A method for forming a plurality of particles as in claim 8 , comprising depositing the plurality of particles on a separator.

20 . A compound as in claim 1 , wherein w is equal to y, 1.5y, or 2y.

Assignees

• Sion Power Corp
• Basf Se

Inventors

• Du Hui
• Kelley Tracy Earl
• Scordilis-Kelley Chariclea
• Schneider Holger
• Leitner Klaus
• Kulisch Joern
• Safont-Sempere Marina
• Ter Maat Johan

Classifications

• H01M2300/0068

  inorganic · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M10/052

  Li-accumulators · CPC title