# US 12,009,470 B2 · Cylindrical lithium-sulfur batteries

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,009,470 B2
- Document ID: US12009470B2
- Status: Granted
- Kind: B2
- Application number: 18/137,028
- Filed: 2023-04-20
- Published: 2023-08-31
- Granted: 2024-06-11
- Earliest claimed: 2021-07-23
- Assignees: Lyten, Inc.
- Applicants: Lyten, Inc.
- Inventors: Jeffrey Bell; Ratnakumar Bugga; Jerzy Gazda
- Web page: https://patentgrep.com/patent/US12009470B2

## CPC

- H01M 4/667: {in the form of layers, e.g. coatings}
- H01M 10/052: Li-accumulators
- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M 4/134: Electrodes based on metals, Si or alloys
- H01M 4/136: Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
- H01M 4/366: {as layered products}
- H01M 4/38: of elements or alloys
- H01M 4/382: {Lithium (H01M4/405 takes precedence)}
- H01M 4/5815: {Sulfides}
- H01M 4/583: Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M 4/625: {Carbon or graphite}
- H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)}
- H01M 4/663: {containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres}
- H01M 4/70: characterised by shape or form
- H01M 10/0431: {Cells with wound or folded electrodes (H01M10/045 takes precedence)}
- H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
- H01M 50/107: having curved cross-section, e.g. round or elliptic (H01M50/103, H01M50/109, H01M50/11 take precedence)
- H01M 50/169: by welding, brazing or soldering
- H01M 50/46: Separators, membranes or diaphragms characterised by their combination with electrodes
- H01M 50/474: characterised by their position inside the cells
- H01M 50/559: Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells (H01M50/553 takes precedence)
- H01M 50/566: by welding, soldering or brazing
- H01M 2004/021: {Physical characteristics, e.g. porosity, surface area}
- H01M 2004/027: {Negative electrodes}
- H01M 2004/028: {Positive electrodes}
- 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-sulfur battery includes a casing having a length and a width, the casing including at least an anode and a cathode wound into a jelly roll oriented parallel to the length of the casing, an electrolyte disposed in the lithium-sulfur battery, a negative terminal extending along the length of the casing, and a positive terminal extending along the length of the casing, the positive terminal and the negative terminal parallel to one another.

## Claims

### Claim 1

A lithium-sulfur battery including:
a lid circumferentially welded to a cylindrical casing;
a cylindrical jelly roll including:
an anode including one or more of lithium or lithium-containing alloys; and
a cathode including one or more structured layers of agglomerates of carbonaceous particles disposed on opposing sides of a cathode current collector;
a negative terminal disposed along the length of the cylindrical casing and attached length-wise to the anode, wherein the negative terminal is partially exposed outside the casing; and
a positive terminal including a mandrel attached to the cathode and separated from the casing by an insulator.

### Claim 2 (depends on 1)

The lithium-sulfur battery of claim 1, further including a separator disposed between the anode and the cathode.

### Claim 3 (depends on 2)

The lithium-sulfur battery of claim 2, wherein the separator includes a ceramic containing material.

### Claim 4 (depends on 1)

The lithium-sulfur battery of claim 1, wherein the negative terminal is formed of nickel.

### Claim 5 (depends on 1)

The lithium-sulfur battery of claim 1, wherein the anode further includes an anode protective layer disposed on the anode and configured to protect the anode from lithium erosion.

### Claim 6 (depends on 5)

The lithium-sulfur battery of claim 5, wherein the anode protective layer includes one or more of a polymeric network including one or more layers of carbonaceous materials grafted with fluorinated polymer chains cross-linked with each other, a carbonaceous material, or fluorinated poly(meth)acrylates.

### Claim 7 (depends on 1)

The lithium-sulfur battery of claim 1, wherein a cathode loading associated with the cathode is at least 7 g/cm2.

### Claim 8 (depends on 1)

The lithium-sulfur battery of claim 1, wherein a ratio of a reversible capacity (mAh) of the anode to that of the cathode (N/P ratio) is between about 2 and about 4.