High performance all solid lithium sulfer battery with fast lithium ion conduction

Patent metadata

Field	Value
Publication number	US-2016013512-A1
Application number	US-201414329537-A
Country	US
Kind code	A1
Filing date	Jul 11, 2014
Priority date	Jul 11, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

A battery has a lithium anode, a separator adjacent the anode, and a cathode adjacent the separator opposite the anode, the cathode comprising interdigitated stripes of a first and second material, wherein the first material contains sulfur and the second material comprises a solid electrolyte.

First claim

What is claimed is:

1 . A battery, comprising:
a lithium anode; a separator adjacent the anode; and a cathode adjacent the separator opposite the anode, the cathode comprising interdigitated stripes of a first and second material, wherein the first material contains sulfur, carbon, and a first solid electrolyte and the second material comprises a second solid electrolyte.

2 . The battery of claim 1 , further comprising current collectors adjacent to the anode and the cathode opposite the separator.

3 . The battery of claim 1 , wherein the first material comprises at least one of lithium sulfur, lithium superionic sulfide, porous sulfur, and carbon.

4 . The battery of claim 1 , wherein the second material comprises one of either a glass or ceramic electrolyte or an organic electrolyte.

5 . The battery of claim 1 , wherein the second material comprises a glass or a ceramic electrolyte and the electrolyte comprises one of the group consisting of: Li 2 S—P 2 5 5 glass; Li 2 S—P 2 S 5 glass-ceramic; Li 2 S—P 2 S 5 —Li 4 SiO 4 ; Li 2 S—SiS 2 +Li 2 SiO 4 ; and Li 2 S—Ga 2 S 5 —GeS 2 .

6 . The battery of claim 1 , wherein the second material comprises a polymer and the polymer comprises one of either a solid or gel polymer.

7 . The battery of claim 6 , wherein the polymer comprises poly(ethylene oxide).

8 . The battery of claim 6 , wherein the polymer comprises one of group consisting of: 1 poly(vinylidine fluoride); a room temperature ionic liquid; poly(methyl methacrylate); poly(acrylonitrile); and an ethylene glycol based polymer.

9 . A method of manufacturing a battery, comprising:
forming a lithium anode; arranging a separator adjacent the anode; mixing a first material containing sulfur, carbon, and solid electrolyte with a solvent; mixing a solid electrolyte material with a solvent as a second material; extruding the first and second materials as adjacent interdigitated stripes to form a cathode.

10 . The method of claim 9 , wherein mixing a first material containing sulfur with a solvent comprises mixing sulfur and graphite with a solvent.

11 . The method of claim 9 , wherein mixing a solid electrolyte material with a solvent comprises mixing one of a polymer, a glass, ceramic or a glass/ceramic blend with a solvent.

12 . The method of claim 9 , wherein extruding the first and second materials comprises using a co-extrusion print head.

13 . The method of claim 9 , wherein the solid electrolyte comprises one of poly(ethylene oxide), poly(vinylidine fluoride), a room temperature ionic liquid, poly(methyl methacrylate) and ethylene glycol based polymers.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Bae Chang-Jun
• Rao Ranjeet
• Shrader Eric J

Classifications

• H01M4/136

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

• H01M4/587

  for inserting or intercalating light metals · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M4/366

  as layered products · CPC title

• H01M2004/025

  with shapes other than plane or cylindrical · CPC title