Yi Sup Han

Title: Yi Sup Han: Innovator in Lithium-Manganese Oxide Manufacturing

Introduction

Yi Sup Han is a prominent inventor based in Daejeon, South Korea. He has made significant contributions to the field of battery technology, particularly in the manufacturing of lithium-manganese oxide for lithium secondary batteries. With a total of 2 patents, his work is pivotal in enhancing battery performance and longevity.

Latest Patents

Yi Sup Han's latest patents focus on innovative methods for producing lithium-manganese oxide powders. The first patent describes a method that involves dissolving manganese oxide, manganese carbonate, or manganese in nitric acid to create a manganese solution. This solution is then combined with lithium carbonate, lithium hydroxide, or lithium acetate. Glycine is added to the mixture, which is subsequently dried in a vacuum dryer to form a combustible resin. The resin is ignited at room temperature, and the resulting products are calcinated.

The second patent outlines a similar method for manufacturing LiMnO powders intended for use in lithium secondary battery positive electrodes. In this process, oxide or carbonate serves as the positive electrode material. The solution is dried at temperatures exceeding 150°C, and the resulting matter is placed in a reaction furnace for short-term calcination after undergoing spontaneous combustion. This method allows for a certain degree of crystallization in the positive electrode powders, leading to batteries with enhanced charging and discharging capacities and extended life cycles, even under high current conditions.

Career Highlights

Yi Sup Han is affiliated with the Korea Advanced Institute of Science and Technology, where he continues to advance research in battery technology. His innovative approaches have positioned him as a key figure in the development of efficient battery materials.

Collaborations

He has collaborated with notable colleagues, including Ho Gi Kim and Kyu Sung Park, contributing to the advancement of their shared research goals.

Conclusion

Yi Sup Han's work in the field of lithium-manganese oxide manufacturing is instrumental in the evolution of battery technology. His innovative methods promise to enhance the performance and longevity of lithium secondary batteries, making significant strides in energy storage solutions.