18269155. Positive Electrode Active Material for Lithium Secondary Battery, Method for Manufacturing the Same, and Positive Electrode and Lithium Secondary Battery Comprising the Same simplified abstract (LG Energy Solution, Ltd.)

Positive Electrode Active Material for Lithium Secondary Battery, Method for Manufacturing the Same, and Positive Electrode and Lithium Secondary Battery Comprising the Same

Organization Name

LG Energy Solution, Ltd.

Inventor(s)

Eun-Sol Lho of Daejeon (KR)

Joong-Yeop Do of Daejeon (KR)

Kang-Joon Park of Daejeon (KR)

Gi-Beom Han of Daejeon (KR)

Min Kwak of Daejeon (KR)

Sang-Min Park of Daejeon (KR)

Dae-Jin Lee of Daejeon (KR)

Sang-Wook Lee of Daejeon (KR)

Wang-Mo Jung of Daejeon (KR)

Positive Electrode Active Material for Lithium Secondary Battery, Method for Manufacturing the Same, and Positive Electrode and Lithium Secondary Battery Comprising the Same - A simplified explanation of the abstract

This abstract first appeared for US patent application 18269155 titled 'Positive Electrode Active Material for Lithium Secondary Battery, Method for Manufacturing the Same, and Positive Electrode and Lithium Secondary Battery Comprising the Same

The patent application describes a positive electrode active material for a lithium secondary battery. It consists of secondary micro particles with an average particle size of 1 to 10 μm, formed by the agglomeration of primary macro particles with an average particle size of 0.5 to 3 μm. These particles have a lithium-M oxide coating layer on some or all of their surfaces, where M is boron, cobalt, manganese, or magnesium. The secondary macro particles, with an average size of 5 to 20 μm, are formed by the agglomeration of primary micro particles that are smaller than the primary macro particles.

• The positive electrode active material consists of secondary micro particles with an average size of 1 to 10 μm.
• These particles are formed by the agglomeration of primary macro particles with an average size of 0.5 to 3 μm.
• A lithium-M oxide coating layer is present on the surface of these particles, where M is boron, cobalt, manganese, or magnesium.
• Secondary macro particles, with an average size of 5 to 20 μm, are formed by the agglomeration of primary micro particles.
• The primary macro and micro particles are represented by LiNiCoMnQO, with specific ranges for the values of a, b, c, d, and δ, and Q being a metal selected from Al, Mg, V, Ti, or Zr.

Potential Applications: - Lithium secondary batteries - Energy storage systems - Electric vehicles

Problems Solved: - Improved performance and efficiency of lithium secondary batteries - Enhanced energy storage capabilities - Increased lifespan of batteries

Benefits: - Higher energy density - Longer battery life - Enhanced overall performance

Commercial Applications: Title: Advanced Positive Electrode Active Material for Lithium Secondary Batteries This technology can be utilized in the production of high-performance lithium secondary batteries for various applications, including electric vehicles, portable electronics, and energy storage systems. The improved efficiency and energy density offered by this innovation can significantly impact the market for rechargeable batteries.

Prior Art: No specific information on prior art related to this technology is provided in the abstract.

Frequently Updated Research: There is no information on frequently updated research related to this technology in the abstract.

Questions about Positive Electrode Active Material for Lithium Secondary Batteries:

Question 1: How does the lithium-M oxide coating layer enhance the performance of the positive electrode active material? Answer: The lithium-M oxide coating layer helps improve the stability and conductivity of the material, leading to enhanced battery performance and efficiency.

Question 2: What are the key factors influencing the agglomeration of primary macro and micro particles in the formation of secondary particles? Answer: The size and composition of the primary particles, as well as the specific process parameters, play a crucial role in the agglomeration process.

Original Abstract Submitted

A positive electrode active material for a lithium secondary battery has secondary micro particles having an average particle size (D50) of 1 to 10 μm formed by agglomeration of primary macro particles having an average particle size (D50) of 0.5 to 3 μm and a lithium-M oxide coating layer on all or part of a surface, wherein M is at least one selected from the group consisting of boron, cobalt, manganese and magnesium. The secondary macro particles have an average particle size (D50) of 5 to 20 μm formed by agglomeration of primary micro particles having a smaller average particle size (D50) than the primary macro particles. The primary macro particles and the primary micro particles are represented by LiNiCoMnQO, wherein 1.0≤a≤1.5, 0<b<0.2, 0<c<0.2, 0≤d≤0.1, 0<b+c+d≤0.2, −0.1≤δ≤1.0, and Q is at least one type of metal selected from the group consisting of Al, Mg, V, Ti and Zr.