Dry electrode, manufacturing method thereof, secondary battery comprising dry electrode, and energy storage device
The low-shear mixing and grinding process for dry electrode manufacturing addresses issues of active material pulverization and binder cutting, resulting in a flexible and mechanically robust dry electrode suitable for mass production.
KR102993458B1Active Publication Date: 2026-07-21LG ENERGY SOLUTION LTD
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Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Patents
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2024-08-13
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Conventional dry electrode manufacturing processes face issues such as active material pulverization, binder fiber cutting, and equipment blockages due to high-shear mixing, leading to reduced mechanical performance and difficulties in mass production.
Method used
A method involving low-shear mixing and grinding of a mixture comprising an active material, conductive material, and binder, followed by calendering and lamination onto a current collector, to produce a flexible and porous dry electrode.
Benefits of technology
Minimizes active material pulverization, maximizes binder fiberization, and facilitates mass production by ensuring flexibility and uniformity, reducing interfacial resistance and enhancing mechanical performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 112024088345794-PAT00002_ABST
Abstract
According to one embodiment of the present invention, an electrode powder for manufacturing a dry electrode for a secondary battery is provided, wherein the powder comprises an active material, a conductive material, and a binder, and has a resistivity of 700 Ω·cm or less when pressurized at a pressure of 50 MPa, a method for manufacturing the same, a method for manufacturing a dry electrode using the same, a dry electrode, a secondary battery including the same, an energy storage device, and a dry electrode manufacturing device.
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