Weavable, conformable, wearable and flexible components for advanced battery technology

Patent metadata

Field	Value
Publication number	US-2020274201-A1
Application number	US-201816647050-A
Country	US
Kind code	A1
Filing date	Sep 17, 2018
Priority date	Sep 15, 2017
Publication date	Aug 27, 2020
Grant date	—

Abstract

The invention, relates to flexible, thin trim batteries for use in a variety of applications including, but not limited to, flexible electronics, flexible energy storage systems, wearable textile-like energy devices and various other integrated electronic and mobile device-based applications. The flexible, thin, film batteries allow the design and development of weavable, conformable, wearable and flexible components for advanced battery technology. The invention relates to flexible energy storage system that include an electrospun, textile-like, weaved assembly including a flexible cathode, a flexible anode, and an electrolyte. The electrolyte can include a flexible gel-polymer and a nanostractured filler.

First claim

We claim:

1 . A flexible energy storage system, comprising:
an electrospun, textile-like, weaved assembly that comprises:
a flexible cathode;
a flexible anode; and
an electrolyte, which comprises:
a flexible gel-polymer; and
a nanostructured filler.

2 . The system of claim 1 , wherein each of the cathode, anode and electrolyte is in the form of an electrospun yarn.

3 . The system of claim 1 , wherein the electrospun, textile-like, weaved assembly comprises:
an anode current collector; an anode active material; the electrolyte having a layered configuration, comprising a doped oxide and/or a doped non-oxide filler; a cathode active material; and a cathode current collector.

4 . The system of claim 3 , further comprising a polymer shell to encompass the electrospun, textile-like, weaved assembly.

5 . The system of claim 1 , wherein the flexible anode comprises amorphous and/or crystalline/nanocrystalline silicon and/or doped amorphous and/or crystalline/nanocrystalline silicon fibers, and is in the form of a mat.

6 . The system of claim 5 , wherein the doped silicon fibers comprise a dopant selected from any element other than Group IV of the Periodic Table.

7 . The system of claim 1 , wherein the flexible cathode comprises undoped and/or doped sulfur wires and is the form of a mat.

8 . The system of claim 7 wherein the doped sulfur wires comprise a dopant selected from any element other than oxygen from Group VI of the Periodic Table.

9 . A flexible battery device, comprising:
a stacked configuration, comprising:
a flexible anode;
a flexible cathode; and
a flexible lithium ion conducting membrane comprising a gel-polymer electrolyte,
wherein the lithium ion conducting membrane is positioned between the flexible anode and flexible cathode.

10 . A method of preparing a flexible energy storage system, comprising:
electrospinning a material comprising silicon fibers to form a flexible anode; electrospinning a material comprising sulfur wires to form a flexible cathode; electrospinning a polymer-gel to form a flexible electrolyte; and assembling the anode, cathode and electrolyte to form a textile-like, weaved assembly.

11 . The method of claim 10 , wherein each of the flexible anode, cathode and electrolyte forms a separate mat or sheet.

12 . The method of claim 11 , wherein each separate mat or sheet is comprised of textile-like yarn.

13 . A textile-like fabric having integrated therein the flexible energy storage system of claim 1 .

Assignees

• Univ Of Pittsburgh - Of The Commonwealth System Of Higher Education

Inventors

• Kumta Prashant N
• Datta Moni K
• Jampani Hanumantha Prashanth
• Gattu Bharat
• Shanthi Pavithra Murugavel

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M4/134 Primary

  Electrodes based on metals, Si or alloys · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/052

  Li-accumulators · CPC title

• D10B2401/18

  including electronic components · CPC title