18620055. ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS simplified abstract (Ningde Amperex Technology Limited)

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ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS

Organization Name

Ningde Amperex Technology Limited

Inventor(s)

Chunrui Xu of Ningde (CN)

Yanyan Xu of Ningde (CN)

Shaoyun Zhou of Ningde (CN)

ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18620055 titled 'ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS

Simplified Explanation

The patent application describes an electrochemical apparatus with improved performance under high temperatures by using a positive electrode plate containing a positive electrode active material with element Co, and an electrolyte with a polynitrile compound.

  • The positive electrode active material includes element Co.
  • The polynitrile compound in the electrolyte is adjusted based on the amount of Co in the positive electrode active material.
  • The polynitrile compound forms coordination complexation with Co and other additives, enhancing the structural stability of the positive electrode material.
  • This innovation inhibits leaching of Co, reduces electrolyte oxidation, and suppresses related side reactions, leading to enhanced performance of the electrochemical apparatus under high temperatures.

Key Features and Innovation

  • Positive electrode plate with Co-containing active material
  • Electrolyte with polynitrile compound adjusted based on Co content
  • Coordination complexation of polynitrile compound with Co and additives
  • Improved structural stability of positive electrode material
  • Enhanced performance under high temperatures

Potential Applications

This technology can be applied in high-temperature environments where stable electrochemical performance is crucial, such as in electric vehicles, energy storage systems, and portable electronics.

Problems Solved

  • Enhanced structural stability of positive electrode material
  • Inhibition of Co leaching and electrolyte oxidation
  • Suppression of related side reactions

Benefits

  • Improved performance under high temperatures
  • Extended lifespan of electrochemical apparatus
  • Enhanced safety and reliability

Commercial Applications

Title: High-Temperature Electrochemical Apparatus for Improved Performance This technology can be commercialized in the electric vehicle industry, energy storage sector, and consumer electronics market, offering enhanced performance and reliability in high-temperature conditions.

Questions about the Technology

How does the coordination complexation of the polynitrile compound with Co and additives improve the structural stability of the positive electrode material?

The coordination complexation enhances the bonding between the polynitrile compound, Co, and other additives, resulting in a more stable structure that can withstand high-temperature conditions.

What are the potential long-term benefits of inhibiting Co leaching and electrolyte oxidation in the electrochemical apparatus?

By inhibiting Co leaching and electrolyte oxidation, the electrochemical apparatus can maintain its performance and efficiency over an extended period, leading to increased lifespan and reliability.


Original Abstract Submitted

An electrochemical apparatus includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte, where the positive electrode plate includes a positive electrode active material, the positive electrode active material includes element Co, and the electrolyte includes a polynitrile compound. The amount of the polynitrile compound is adjusted according to the amount of element Co in the positive electrode active material, and the polynitrile compound is in coordination complexation with Co with other additives used in combination. The structural stability of the positive electrode material with lithium highly released is significantly improved, inhibiting leaching of Co, reducing oxidization of the electrolyte by the positive electrode active material, and inhibiting related side reactions, thereby effectively improving performance of the electrochemical apparatus under high temperature.