Solid state electrolytes for safe metal and metal-ion batteries

Patent metadata

Field	Value
Publication number	US-2023126762-A1
Application number	US-202218069388-A
Country	US
Kind code	A1
Filing date	Dec 21, 2022
Priority date	Dec 15, 2015
Publication date	Apr 27, 2023
Grant date	—

Abstract

A Li or Li-ion or Na or Na-ion battery cell is provided that comprises anode and cathode electrodes, a separator, and a solid electrolyte. The separator electrically separates the anode and the cathode. The solid electrolyte ionically couples the anode and the cathode. The solid electrolyte also comprises a melt-infiltration solid electrolyte composition that is disposed at least partially in at least one of the electrodes or in the separator.

First claim

1 . A battery cell, comprising
an anode electrode; a cathode electrode; a separator electrically separating the anode electrode and the cathode electrode; and a solid electrolyte ionically coupling the anode electrode and the cathode electrode, wherein the solid electrolyte comprises a melt-infiltration solid electrolyte composition disposed at least partially in at least one of the electrodes or in the separator, wherein the melt-infiltration solid electrolyte composition comprises at least one of the following elements: F, Br, or Cl, and wherein the melt-infiltration solid electrolyte composition comprises Al.

2 . The battery cell of claim 1 , wherein the melt-infiltration solid electrolyte composition further comprises at least one of: Na, K, Cs and Li.

3 . The battery cell of claim 1 , wherein the cathode electrode comprises an intercalation-type active material.

4 . The battery cell of claim 3 , wherein the cathode electrode comprises at least one of: Na, K and Li.

5 . The battery cell of claim 1 , wherein the cathode electrode comprises a cathode particle that exhibits a core-shell morphology comprising a shell and a core.

6 . The battery cell of claim 5 , wherein the shell at least partially encases a cathode active material.

7 . The battery cell of claim 5 , wherein an average thickness of the shell is in excess of about 1 nm.

8 . The battery cell of claim 5 , wherein an average thickness of the shell ranges from about 0.05% to about 20% of a radius of the cathode particle.

9 . The battery cell of claim 5 , wherein the shell is porous.

10 . The battery cell of claim 9 , wherein a pore size in the shell ranges from about 0.3 nm to about 100 nm.

11 . The battery cell of claim 5 , wherein the shell is a composite comprising two or more materials.

12 . The battery cell of claim 1 , wherein the anode electrode comprises a first metal-comprising current collector and the cathode electrode comprises a second metal-comprising current collector.

13 . The battery cell of claim 12 , wherein the first metal-comprising current collector, the second metal-comprising current collector, or both, comprise at least one of: Al, steel, and conductive C.

14 . The battery cell of claim 12 , wherein the first metal-comprising current collector, the second metal-comprising current collector, or both, comprise a metal foil, a metal mesh or a metal foam.

15 . The battery cell of claim 12 , wherein the first metal-comprising current collector, the second metal-comprising current collector, or both, comprise C.

16 . The battery cell of claim 15 , wherein the C comprises one or more of:
a carbon nanofiber, a carbon whisker, a carbon nanotube, graphene, multilayered graphene, exfoliated graphite, a graphite flake, disordered or turbostratic carbon, carbon black, branched carbon, amorphous carbon, porous carbon, conductive carbon, a mixture thereof, and a composite thereof.

17 . The battery cell of claim 1 , wherein the anode electrode comprises a metal-comprising active material or a metal alloy-comprising active material.

18 . The battery cell of claim 17 , wherein the metal-comprising active material or the metal alloy-comprising active material comprise Al or an Al alloy, respectively.

19 . The battery cell of claim 1 , wherein the separator comprises glass or a ceramic material.

20 . The battery cell of claim 19 , wherein the glass or the ceramic material comprises Si.

21 . The battery cell of claim 20 , wherein the glass or ceramic material comprises silicon oxide.

22 . The battery cell of claim 1 , wherein the separator comprises a fibrous material.

Assignees

• Sila Nanotechnologies Inc

Inventors

• Yushin Gleb
• Kajdos Adam
• Berdichevsky Eugene
• Zdyrko Bogdan

Classifications

• H01M4/38

  of elements or alloys · CPC title

• H01M50/431

  Inorganic material · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M10/052

  Li-accumulators · CPC title