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

Patent metadata

Field	Value
Publication number	US-10256503-B2
Application number	US-201414329537-A
Country	US
Kind code	B2
Filing date	Jul 11, 2014
Priority date	Jul 11, 2014
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

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 multiple interdigitated stripes of a first material and second material, wherein the first material and the second material are in contact with the separator and each other, wherein the first material comprises at least one of lithium sulfur or lithium superionic sulfur, and a binder comprised of a first solid polymer electrolyte wherein an amount of first solid polymer electrolyte in the first material is smaller than amounts of other materials in the first material 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 second material comprises one of either a glass or ceramic electrolyte or an organic electrolyte.

4. 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 S 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 .

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

6. The battery of claim 5 , wherein the polymer comprises poly(ethylene oxide).

7. The battery of claim 5 , wherein the polymer comprises one of group consisting of: poly(vinylidine fluoride); a room temperature ionic liquid; poly(methyl methacrylate); poly(acrylonitrile); and an ethylene glycol based polymer.

Assignees

• Palo Alto Res Ct Inc

Inventors

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

Classifications

• H01M4/5815

  Sulfides · CPC title

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M4/0411

  by extrusion · CPC title

• H01M10/0565

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• H01M2300/0071

  Oxides · CPC title