18287226. PRE-LITHIATION METHOD OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE simplified abstract (LG Energy Solution, Ltd.)

PRE-LITHIATION METHOD OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE

Organization Name

LG Energy Solution, Ltd.

Inventor(s)

Ilha Lee of Daejeon (KR)

Mun Kyu Joo of Daejeon (KR)

Sarah Kim of Daejeon (KR)

Seoyoung Jeon of Daejeon (KR)

Yohan Kwon of Daejeon (KR)

Jonghyun Chae of Daejeon (KR)

PRE-LITHIATION METHOD OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18287226 titled 'PRE-LITHIATION METHOD OF NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE

The present application describes a pre-lithiation method for a negative electrode in a lithium secondary battery, as well as the negative electrode and the battery itself.

• Negative electrode current collector layer and active material layer are formed on the negative electrode.
• A silver (Ag)-containing metal layer is formed on the active material layer.
• Lithium metal is transferred to the Ag-containing metal layer.

Key Features and Innovation:

• Method involves pre-lithiating the negative electrode for improved battery performance.
• Utilizes a specific layering process to enhance lithium transfer efficiency.
• Silver-containing metal layer aids in lithium transfer to the electrode.

Potential Applications:

• Lithium secondary batteries in various electronic devices.
• Energy storage systems for renewable energy sources.
• Electric vehicles and portable electronics.

Problems Solved:

• Enhances battery capacity and performance.
• Improves overall efficiency of lithium transfer.
• Addresses issues of slow initial lithium uptake in batteries.

Benefits:

• Increased energy density and longer battery life.
• Faster charging times and improved overall battery performance.
• Enhanced stability and reliability of lithium secondary batteries.

Commercial Applications:

• Optimized lithium secondary batteries for consumer electronics.
• Potential for use in electric vehicles and energy storage systems.
• Market implications include improved battery technology and increased demand for efficient energy storage solutions.

Questions about Lithium Secondary Battery Pre-Lithiation Method: 1. How does the pre-lithiation method improve battery performance? 2. What role does the silver-containing metal layer play in the process?

Frequently Updated Research: Ongoing studies on enhancing lithium transfer efficiency in battery electrodes.

Original Abstract Submitted

The present application relates to a pre-lithiation method of a negative electrode for a lithium secondary battery, a negative electrode for a lithium secondary battery, and a lithium secondary battery including a negative electrode. The pre-lithiation method includes forming a negative electrode current collector layer and a negative electrode active material layer on one surface or both surfaces of the negative electrode current collector layer; forming a silver (Ag)-containing metal layer on a surface of the negative electrode active material layer opposite to a surface of the negative electrode active material layer facing the negative electrode current collector layer; and transferring lithium metal to a surface of the Ag-containing metal layer opposite to a surface of the metal layer facing the negative electrode active material layer. A thickness of the Ag-containing metal layer is 10 nm or greater and 2 μm or less.