Paper-based lithium-ion batteries

Patent metadata

Field	Value
Publication number	US-9472832-B2
Application number	US-201615004166-A
Country	US
Kind code	B2
Filing date	Jan 22, 2016
Priority date	Dec 14, 2012
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A method for fabricating a paper lithium ion cell including depositing a first lithium-metal oxide composition onto a first electrically conducting microfiber paper substrate to define a cathode, depositing a second, different lithium-metal oxide composition onto a second electrically conducting coated microfiber paper substrate to define an anode, separating the cathode and the anode with a barrier material, infusing the cathode and the anode with electrolytes, and encapsulating the anode, the cathode, and the barrier material in a housing.

First claim

What is claimed is:

1. A method for fabricating a paper lithium ion cell comprising:
a) depositing a first lithium-metal oxide composition onto a first electrically conducting microfiber paper substrate to define a cathode;
b) depositing a second, different lithium-metal oxide composition onto a second electrically conducting coated microfiber paper substrate to define an anode;
c) separating the cathode and the anode with a barrier material;
d) infusing the cathode and the anode with electrolytes; and
e) encapsulating the anode, the cathode, and the barrier material in a housing;
wherein the first and second electrically conducting microfiber papers are formed from cellulosic microfibers between about 0.1 mm and about 5 mm in length.

2. A method for fabricating a paper lithium ion cell comprising:
a) depositing a first lithium-metal oxide composition onto a first electrically conducting microfiber paper substrate to define a cathode;
b) depositing a second, different lithium-metal oxide composition onto a second electrically conducting coated microfiber paper substrate to define an anode;
c) separating the cathode and the anode with a barrier material;
d) infusing the cathode and the anode with electrolytes; and
e) encapsulating the anode, the cathode, and the barrier material in a housing;
wherein the first and second electrically conducting microfiber papers are formed from cellulosic microfibers between about 0.1 mm and about 5 mm in length; and
wherein the microfibers have diameters between about 35 micrometers and about 200 micrometers.

Assignees

• Univ Indiana Res & Tech Corp
• Univ Indiana Res & Tech Corp

Inventors

• Agarwal Mangilal
• Varahramyan Khodadad
• Shrestha Sudhir
• Aliahmad Nojan

Classifications

• H01M4/663 Primary

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

• H01M4/666

  in the form of mixed materials (H01M4/668 takes precedence) · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M4/78

  Shapes other than plane or cylindrical, e.g. helical · CPC title

• H01M10/0525

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