Vertical carbon nanotube and lithium ion battery chemistries, articles, architectures and manufacture

Patent metadata

Field	Value
Publication number	US-2017214083-A1
Application number	US-201715411544-A
Country	US
Kind code	A1
Filing date	Jan 20, 2017
Priority date	Jan 22, 2016
Publication date	Jul 27, 2017
Grant date	—

Abstract

Features for rechargeable lithium ion batteries, the batteries optionally employing vertically aligned carbon nanotube scaffolding, are described. Methods of manufacture and a solid polymer electrolyte are described for 3-dimensional battery architectures using the vertically aligned carbon nanotubes. Poly(ethylene)oxide bis(azide) and graphene poly(lactic acid) composite coatings are also described for use in such batteries or others.

First claim

1 . An electrochemical cell comprising:
an anode comprising a first substrate supporting carbon nanotubes incorporating a first active material; a cathode comprising a second substrate supporting carbon nanotubes incorporating a second active material; and a solid polymer structure provided as electrical insulation between the first and second substrates; a separate solid polymer provided as electrolyte between the carbon nanotubes of each of the anode and cathode.

2 . The electrochemical cell of claim 2 , wherein the first and second substrates comprise stainless steel.

3 . A method of electrochemical cell manufacture comprising:
forming an anode comprising first substrate supporting carbon nanotubes incorporating a first active material; forming an cathode comprising second substrate supporting carbon nanotubes incorporating a second active material; forming a solid polymer insulator configured to closely fit between said anode and cathode substrates; and assembling the anode, cathode and solid polymer insulator into a close-fit relationship.

4 . The method of claim 3 , wherein the solid electrolyte shape is formed by photo lithography.

5 . The method of claim 3 , further comprising filling between the anode and the cathode with a polymer electrolyte paste.

6 . The method of claim 5 , further comprising curing the polymer electrolyte to a solid state.

7 . The method of claim 5 , further comprising filling between the anode and cathode after the assembling.

8 . The method of claim 5 , wherein the polymer electrolyte comprises functionalized poly(ethylene glycol), a lithium salt, an ionic liquid, and graphene oxide.

9 . An electrochemical cell comprising:
an anode comprising a first ceramic substrate supporting carbon nanotubes incorporating a first active material; a cathode comprising a second ceramic substrate supporting carbon nanotubes incorporating a second active material; and a solid electrolyte provided between the anode and cathode.

10 . The electrochemical cell of claim 9 , further comprising metal patterned on the first and second substrates.

11 . The electrochemical cell of claim 10 , wherein the ceramic is Al 2 O 3 .

12 - 18 . (canceled)

19 . The electrochemical cell of claim 1 , wherein the first active materials comprises silicon and the second active material comprises sulfur.

20 . The electrochemical cell of claim 19 , including lithium ions and enclosed in a housing.

Assignees

• California Inst Of Techn

Inventors

• Darolles Isabelle M
• Fahimi Azin
• Wang Cong
• Aria Adrianus I
• Cendon Luciana
• Gharib Morteza

Classifications

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title

• H01M4/662

  Alloys (collectors of lead alloys H01M4/685) · CPC title

• H01M4/665

  Composites · CPC title

• H01M10/0525 Primary

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