METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL

Organization Name

Inventor(s)

So Yubuchi of Sunto-gun Shizuoka-ken (JP)

Masahiro Morimoto of Susono-shi Shizuoka-ken (JP)

METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL - A simplified explanation of the abstract

This abstract first appeared for US patent application 18420371 titled 'METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL

The patent application describes a method of increasing the capacity of an O2 type positive electrode active material through a specific manufacturing process.

Firing a precursor containing Na and transition metal elements.
Cooling to obtain a Na containing transition-metal oxide with a P2 type structure.
Replacing at least a portion of Na with Li through ion-exchange to obtain a positive electrode active material with an O2 type structure.
Cooling rate from 250°C to cooling end-temperature is 20°C/min or higher.

Potential Applications: - This technology can be applied in the development of high-capacity batteries for various electronic devices. - It can also be utilized in the renewable energy sector for energy storage solutions.

Problems Solved: - Increases the capacity of positive electrode active materials, leading to improved battery performance. - Enhances the efficiency and energy density of batteries.

Benefits: - Extended battery life and improved overall performance. - Enables the development of more powerful and long-lasting energy storage solutions.

Commercial Applications: Title: Enhanced Battery Performance Technology for Various Industries This technology can be commercialized for the production of advanced batteries used in smartphones, electric vehicles, and renewable energy systems. It has the potential to revolutionize the energy storage industry by providing more efficient and long-lasting battery solutions.

Questions about the technology: 1. How does this method compare to traditional methods of manufacturing positive electrode active materials? - This method offers a more efficient way to increase capacity and improve battery performance compared to traditional manufacturing processes. 2. What are the specific advantages of replacing Na with Li in the positive electrode active material? - Replacing Na with Li enhances the overall performance and energy density of the battery, leading to improved efficiency and longevity.

Original Abstract Submitted

Disclosed is a method of increasing the capacity of an O2 type positive electrode active material. The method of manufacturing a positive electrode active material according to the present disclosure comprises firing a precursor containing Na and transition metal elements, followed by cooling to obtain a Na containing transition-metal oxide having a P2 type structure; and replacing at least a portion of Na of the Na containing transition-metal oxide with Li by ion-exchange to obtain a positive electrode active material having an O2 type structure, wherein after firing the precursor, the cooling rate from 250° C. to cooling end-temperature is 20° C./min or higher.