# US 2013/0157128 A1 · Electrode for lithium batteries and its method of manufacture

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

- Number: US 2013/0157128 A1
- Document ID: US20130157128A1
- Status: Published application
- Kind: A1
- Application number: 13/766,085
- Filed: 2013-02-13
- Published: 2013-06-20
- Earliest claimed: 2010-09-22
- Assignees: Commissariat A L'energie Atomique Et Aux Energies Alternatives
- Inventors: Sébastien SOLAN; Nelly GIROUD
- Web page: https://patentgrep.com/patent/US20130157128A1

## CPC

- H01M 4/80: Porous plates, e.g. sintered carriers
- H01M 4/663: {containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres}
- H01M 4/74: Meshes or woven material; Expanded metal
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M 4/136: Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
- Y02E 60/10: Energy storage using batteries
- 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

## Abstract

The electrode for a lithium battery comprises a porous current collector made of woven or nonwoven carbon fibers.

## Claims

### Claim 1

A method for manufacturing a lithium battery electrode comprising the steps of:
depositing an electrode ink on a current collector made of carbon fibers by coating or printing; said ink comprising at least one active electrode material, at least one polymer hinder, at least one electronic conductor;
drying: evaporating the solvent;
the current collector being porous and made of woven or nonwoven carbon fibers;
the polymer binder of the ink being poly(acrylic acid) having a molecular weight ranging between 1 000 000 and 2 500 000 g.mol−1.

### Claim 2 (depends on 1)

The method for forming an electrode for a lithium battery of claim 1, wherein the current collector has a porosity ranging between 70% and 85%, typically on the order of 80%.

### Claim 3 (depends on 1)

The method for forming an electrode for a lithium battery of claim 1, wherein it further comprises a step of suction of the ink on the collector simultaneously to the deposition step or to the drying step or between these two steps, preferably on a drying table.

### Claim 4 (depends on 1)

An electrode for a lithium battery obtained according to claim 1.

### Claim 5 (depends on 4)

The electrode of claim 4, wherein said electrode is positive or negative.

### Claim 6 (depends on 4)

The electrode of claim 4, wherein the area capacity of said electrode ranges between 0.1 and 10 mAh.cm−2.

### Claim 7 (depends on 6)

The electrode of claim 6, wherein the area capacity of said electrode ranges between 0.3 and 5 mAh.cm−2.

### Claim 8 (depends on 4)

A lithium accumulator comprising at least one electrode of claim 4.

### Claim 9 (depends on 4)

A primary lithium battery comprising at least one electrode of claim 4.

### Claim 10 (depends on 8)

A secondary lithium battery comprising at least one lithium accumulator of claim 8.