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 20240262708 titled 'METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL

Simplified Explanation: The patent application describes a method to increase the capacity of a positive electrode active material by firing a precursor containing sodium and transition metal elements, cooling it to obtain a sodium-containing transition-metal oxide with a P2 type structure, and then replacing some of the sodium with lithium through ion-exchange to achieve a positive electrode active material with an O2 type structure.

The method involves firing a precursor with sodium and transition metal elements.
The cooled material has a P2 type structure with sodium.
Sodium is replaced with lithium through ion-exchange to create a positive electrode active material with an O2 type structure.
The cooling rate from 250°C to the end temperature is at least 20°C/min.

Potential Applications: This technology could be applied in the development of high-capacity lithium-ion batteries for various electronic devices, electric vehicles, and energy storage systems.

Problems Solved: This method addresses the need for increasing the capacity and performance of positive electrode active materials in lithium-ion batteries.

Benefits: - Enhanced capacity of positive electrode active materials - Improved performance of lithium-ion batteries - Potential for longer battery life and increased energy storage capabilities

Commercial Applications: The technology could be utilized in the production of advanced lithium-ion batteries for consumer electronics, electric vehicles, and grid energy storage systems, potentially revolutionizing the energy storage industry.

Prior Art: Readers interested in prior art related to this technology can explore research articles, patents, and publications in the field of lithium-ion battery materials and electrode design.

Frequently Updated Research: Stay updated on the latest advancements in lithium-ion battery technology, materials science, and energy storage research to discover new innovations and improvements in positive electrode active materials.

Questions about Positive Electrode Active Materials: 1. What are the key challenges in developing high-capacity positive electrode active materials for lithium-ion batteries? 2. How does the ion-exchange process improve the performance of positive electrode active materials in lithium-ion batteries?

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.