Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sulfide and oxy-sulfide glass and glass-ceramic films for batteries incorporating metallic anodes

a technology of glassceramic films and metallic anodes, which is applied in the direction of cell components, electrochemical generators, manufacturing tools, etc., can solve the problems of difficult formation and vulnerable to cell failure, and achieve the effect of improving glass formability and/or stability

Inactive Publication Date: 2019-12-26
GM GLOBAL TECH OPERATIONS LLC
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a process for making sulfide and oxy-sulfide glasses using specific materials. These glasses can be used as electrode / separator layers in batteries. The process involves heating and consolidating small particles of glass onto a substrate, making a thin layer that can be annealed to reduce stress and introduce small crystal phases. The resulting glass layer is transparent and can function with metallic anode layers and accommodate the transport of lithium or sodium ions between the anode and cathode layers. This process can also make the glass layer resistant to penetration by metallic dendrites, which can form on the anode during battery cycling.

Problems solved by technology

Sulfide glasses have fair to excellent lithium ion conductivity but have been difficult to form as electrolyte / separator structures and have been vulnerable to cell failure due to penetration by lithium dendrites formed on and from the lithium anode during repeated cycling of the battery cell(s).

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sulfide and oxy-sulfide glass and glass-ceramic films for batteries incorporating metallic anodes
  • Sulfide and oxy-sulfide glass and glass-ceramic films for batteries incorporating metallic anodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022]Sulfide-based or oxy-sulfide-based glasses containing lithium ions offer promise as solid electrolytes in electrochemical cells which employ an alkali metal, particularly lithium or sodium, as an anode. For convenience, the following description will detail methods for forming a thin layer of a lithium ion-conducting solid electrolyte for use in cells comprising a metallic lithium anode, but similar methods may be practiced to prepare sodium ion-conducting electrolytes by substituting sodium-based compositions for the corresponding lithium-based compositions.

[0023]Suitably thin films or sheets of these sulfide or oxy-sulfide compositions may be interposed between the lithium metal anode, possibly in conjunction with a liquid, lithium-conducting electrolyte, and an opposing cathode and serve to separate these opposing electrodes and prevent direct electrical interconnection of anode and cathode in such cells.

[0024]The separator function of the film is as important as its electr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
sizeaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

A solid state electrolyte including an oxy-sulfide glass or glass ceramic, solid state electrolyte layer having a thickness in the range of ten micrometers to two hundred micrometers is provide. The composition of the electrolyte layer is the reaction product of a mixture initially including either a glass former including sulfur or a glass co-former including sulfur, and a glass modifier including Li2O or Na2O. The solid-state electrolyte layer is further characterized as having a wholly amorphous microstructure or as having small recrystallized regions separated from each other in an amorphous matrix, the recrystallized regions having a size of up to five micrometers. The solid-state electrolyte layer includes mobile lithium ions or mobile sodium ions associated with sulfur anions chemically anchored in the microstructure.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of U.S. patent application Ser. No. 15 / 480,505 filed on Apr. 6, 2017. The entire disclosure of the above application is incorporated herein by reference.TECHNICAL FIELD[0002]Methods are provided for preparing sulfide and oxy-sulfide glass and glass-ceramic solid-state electrolytes for batteries having a metallic anode substantially consisting of lithium or sodium. Dense sulfur-containing glasses are prepared which enable the formation of energy dense metal anode batteries while preventing penetration of metallic dendrites into the solid-state electrolyte / separator.INTRODUCTION[0003]Lithium batteries are finding increasing use in automotive vehicles and many other consumer products and sodium batteries are receiving favorable consideration for such applications. Exemplary batteries may employ a lithium metal anode in combination with a suitable liquid or solid electrolyte and a compatible active cathode mat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): H01M10/0562C03C3/32C03C10/00C03C4/18C03B25/02
CPCH01M2300/0068C03C4/18H01M10/0562C03C10/00C03C3/321C03B25/025C03B17/062C03B19/09C03B32/02C03B2201/86H01M10/052H01M2300/0071Y02E60/10
Inventor YERSAK, THOMAS A.SALVADOR, JAMES R.NGUYEN, HAN
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products