All-solid state lithium carbon monofluoride batteries

Patent metadata

Field	Value
Publication number	US-9786915-B2
Application number	US-201514633453-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Apr 10, 2014
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A solid state lithium carbon monofluoride battery includes an anode comprising Li, a solid electrolyte, and a cathode including CF x and LPS. The cathode can also include a carbon compound. The solid electrolyte can include LPS. The LPS can include β-Li 3 PS 4 . The cathode LPS can include β-Li 3 PS 4 . A method of making a battery is also disclosed.

First claim

We claim:

1. A solid state lithium carbon monofluoride primary battery, comprising:
an anode comprising Li;
a solid electrolyte comprising β-Li 3 PS 4 ;
a cathode comprising carbon compound, CF x , and β-Li 3 PS 4 ;
wherein the battery has a capacity utilization of greater than 865 mAh/g, and greater than the theoretical capacity for a CF x cathode.

2. The battery of claim 1 , wherein the cathode comprises 10%-95% CF x , 5%-70% β-Li 3 PS 4 , and 0% to 50% carbon compound, based on the total weight of the cathode.

3. The battery of claim 1 , wherein the cathode further comprises amorphous LiF.

4. The battery of claim 1 , wherein the carbon is carbon black.

Assignees

• Ut Battelle Llc

Inventors

• Liang Chengdu
• Rangasamy Ezhiylmurugan

Classifications

• H01M10/052

  Li-accumulators · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M4/5835

  Comprising fluorine or fluoride salts · CPC title

• H01M4/1393

  of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title