# US 12,183,880 B2 · Vitreous solid electrolyte sheets of Li ion conducting sulfur-based glass and associated structures, cells and methods

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- Number: US 12,183,880 B2
- Document ID: US12183880B2
- Status: Granted
- Kind: B2
- Application number: 18/191,615
- Filed: 2023-03-28
- Published: 2023-10-19
- Granted: 2024-12-31
- Earliest claimed: 2014-12-02
- Assignees: PolyPlus Battery Company
- Applicants: PolyPlus Battery Company
- Inventors: Steven J. Visco; Yevgeniy S. Nimon; Lutgard C. De Jonghe; Bruce D. Katz; Vitaliy Nimon
- Web page: https://patentgrep.com/patent/US12183880B2

## CPC

- H01M 10/0562: Solid materials
- H01M 10/052: Li-accumulators
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/056: characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M 50/437: Glass
- H01M 50/44: Fibrous material
- H01M 50/489: Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M 50/497: Ionic conductivity
- H01M 2300/0068: inorganic
- H01M 2300/0071: Oxides
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## 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.

## Claims

### Claim 1

A standalone positive electrode assembly, comprising:
a positive electroactive component layer and a first solid electrolyte sheet,
wherein the positive electroactive component layer is encapsulated on a first major surface by the solid electrolyte sheet; and,
further wherein the solid electrolyte sheet comprises freestanding substantially amorphous solid electrolyte wall structures that are dense, inorganic and conductive of Li ions, the wall structures comprising:
i) a continuous Li ion conducting inorganic amorphous material phase with room temperature Li ion conductivity ≥10−5 S/cm;
ii) first and second opposing principal sides and associated surfaces; and
ii) a microstructure devoid of contiguous crystalline grain boundaries and powder particle boundaries extending between the opposing principal side surfaces.

### Claim 2 (depends on 1)

The standalone positive electrode assembly of claim 1, wherein the assembly is double sided, comprising a second solid electrolyte sheet that encapsulates the second major surface of the positive layer.

### Claim 3 (depends on 2)

The standalone positive electrode assembly claim 2, wherein the assembly is edged sealed via discrete sidewall components.

### Claim 4 (depends on 1)

The standalone positive electrode assembly claim 1, wherein the assembly is edged sealed via discrete sidewall components.

### Claim 5 (depends on 4)

The standalone positive electrode assembly claim 4, wherein the positive layer is a multi-layer comprising a current collecting layer and an electroactive material layer.

### Claim 6 (depends on 5)

The standalone positive electrode assembly of claim 5, wherein the electroactive layer is a lithium ion intercalation compound.

### Claim 7 (depends on 6)

The standalone positive electrode assembly of claim 6, wherein the intercalation compound is an oxide.

### Claim 8 (depends on 1)

The standalone positive electrode assembly of claim 1, wherein the assembly is single-sided and an inert backplane component impermeable and non-reactive to liquid electrolytes.

### Claim 9 (depends on 8)

The standalone positive electrode assembly of claim 8, wherein the backplane is a metal layer.

### Claim 10 (depends on 9)

The standalone positive electrode assembly of claim 9, wherein the backplane is a polymer layer.

### Claim 11 (depends on 1)

The standalone positive electrode assembly of claim 1, wherein the edge seal is a fusion seal.

### Claim 12 (depends on 1)

The standalone positive electrode assembly of claim 1, wherein the assembly is devoid of liquid electrolyte.