Lithium electrode assembly

Patent metadata

Field	Value
Publication number	US-2022320579-A1
Application number	US-202217654233-A
Country	US
Kind code	A1
Filing date	Mar 9, 2022
Priority date	Dec 22, 2015
Publication date	Oct 6, 2022
Grant date	—

Abstract

A lithium ion-conductive solid electrolyte including a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass is capable of high performance in a lithium metal battery by providing a high degree of lithium ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner. An automated machine based system, apparatus and methods assessing and inspecting the quality of such vitreous solid electrolyte sheets, electrode sub-assemblies and lithium electrode assemblies can be based on spectrophotometry and can be performed inline with fabricating the sheet or web (e.g., inline with drawing of the vitreous Li ion conducting glass) and/or with the manufacturing of associated electrode sub-assemblies and lithium electrode assemblies and battery cells.

First claim

1 - 5 . (canceled)

6 . A web of Li ion conducting solid electrolyte glass comprising a vitreous Li ion conducting sulfide glass sheet having Li ion conductivity of at least 10 −5 S/cm and a glass sheet thickness in the range of 10 to 100 um, wherein the web further comprises an electrically insulating edge-protector element that is configured to interface with the lengthwise edges of the glass sheet to safeguard against physical damage of the Li ion conducting solid electrolyte web.

7 . The web of Li ion conducting solid electrolyte glass of claim 6 , wherein the vitreous glass sheet thickness is between 20 to 50 μm.

8 . The web of Li ion conducting solid electrolyte glass of claim 6 , wherein the web is long having a length/width ratio >10, and length >100 cm.

9 . The web of Li ion conducting solid electrolyte glass of claim 6 , wherein the edge protector further serves as a spacer to prevent contact between adjacent surfaces when the web is wound as a continuous roll.

10 . The web of Li ion conducting solid electrolyte glass of claim 6 , wherein the protector element is removable.

11 . The web of Li ion conducting solid electrolyte glass of claim 6 , wherein the edge protector element comprises a polymer film.

12 . The web of Li ion conducting solid electrolyte glass of claim 11 , wherein the polymer film is a tape adhered to and covering the lengthwise edges.

13 . The web of Li ion conducting solid electrolyte glass of claim 10 , wherein the removable edge protector element is a polymeric bracket that is snug fit to the glass sheet lengthwise edges.

Assignees

• Polyplus Battery Co Inc

Inventors

• Visco Steven J
• Nimon Yevgeniy S
• De Jonghe Lutgard C
• Katz Bruce D
• Nimon Vitaliy

Classifications

• H01M50/497

  Ionic conductivity · CPC title

• H01M50/437

  Glass · CPC title

• H01M50/406

  Moulding; Embossing; Cutting · CPC title

• G01N21/31

  Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry {(G01N21/72 takes precedence)} · CPC title

• G01N2021/8967

  Discriminating defects on opposite sides or at different depths of sheet or rod · CPC title