18574567. Positive Electrode for Lithium Secondary Battery and Positive Electrode and Lithium Secondary Battery Comprising the Same simplified abstract (LG Energy Solution, Ltd.)

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Positive Electrode for Lithium Secondary Battery and Positive Electrode and Lithium Secondary Battery Comprising the Same

Organization Name

LG Energy Solution, Ltd.

Inventor(s)

Ji-Hye Kim of Daejeon (KR)

Sang-Seung Oh of Daejeon (KR)

Hyun-Seok Lee of Daejeon (KR)

Sung-Hwan Cho of Daejeon (KR)

Positive Electrode for Lithium Secondary Battery and Positive Electrode and Lithium Secondary Battery Comprising the Same - A simplified explanation of the abstract

This abstract first appeared for US patent application 18574567 titled 'Positive Electrode for Lithium Secondary Battery and Positive Electrode and Lithium Secondary Battery Comprising the Same

Simplified Explanation

The positive electrode for a lithium secondary battery has two layers of active material, with the second layer containing bimodal positive electrode materials of different sizes. This design allows for high rolling pressure during manufacturing and reduces vulnerability to cracking.

  • The positive electrode includes two layers of active material.
  • The second layer has bimodal positive electrode materials with different particle sizes.
  • The design enables high rolling pressure during manufacturing.
  • The first layer reduces vulnerability to cracking.
  • Overall, the electrode is more durable and efficient.

Potential Applications

This technology can be used in lithium secondary batteries for various applications such as electric vehicles, portable electronics, and energy storage systems.

Problems Solved

1. High rolling pressure during manufacturing. 2. Vulnerability to cracking in positive electrode materials. 3. Efficiency and durability of lithium secondary batteries.

Benefits

1. Improved durability and efficiency of lithium secondary batteries. 2. Enhanced performance in electric vehicles and portable electronics. 3. Increased energy storage capacity in energy storage systems.

Commercial Applications

  • Lithium secondary battery manufacturing industry
  • Electric vehicle industry
  • Portable electronics market

Questions about Positive Electrode for Lithium Secondary Battery

What are the key features of the positive electrode for a lithium secondary battery?

The positive electrode includes two layers of active material, with the second layer containing bimodal positive electrode materials of different sizes to enhance durability and efficiency.

How does the positive electrode design address common issues in lithium secondary batteries?

The design of the positive electrode reduces vulnerability to cracking and allows for high rolling pressure during manufacturing, solving problems related to durability and efficiency.


Original Abstract Submitted

A positive electrode for a lithium secondary battery includes a first positive electrode active material layer on the current collector and_a second positive electrode active material layer on the first positive electrode active material layer. The second positive electrode active material layer includes bimodal positive electrode active materials including positive electrode active material secondary macroparticles and secondary microparticles having different average particle sizes to allow sufficiently high rolling pressure when manufacturing the electrode. The first positive electrode active material in the first positive electrode active material layer interposed between the current collector and the second positive electrode active material layer has the positive electrode active material particles less vulnerable to cracking.