Changjoo Han

Title: Changjoo Han: Innovator in Lithium Secondary Battery Technologies

Introduction

Changjoo Han, an accomplished inventor based in Seoul, South Korea, has made significant contributions to the field of lithium secondary batteries. With a total of five patents to his name, his work has greatly influenced advancements in battery technology, focusing on improving performance and safety.

Latest Patents

Among Han's latest inventions is a lithium secondary battery that utilizes an electrolyte containing ammonium compounds. This innovative design incorporates a cathode made from lithium-containing transition metal oxides and an anode composed of graphitized carbon. By adding an ammonium compound capable of providing ammonium ions to a non-aqueous electrolyte, this invention enhances high-temperature performance, effectively reducing both residual capacity and recovery capacity losses during high-temperature storage.

Another notable invention is the electrode assembly designed to hold electrodes securely within a secondary battery. This stacking-type assembly has a cathode/separator/anode structure and features at least one through-hole for the insertion of holding members in a male-female coupling type structure. This design ensures the safe positioning of cathodes and anodes, preventing them from moving separately from the separators when external forces are applied, which minimizes the chances of internal short circuits and enhances overall battery safety.

Career Highlights

Changjoo Han is currently employed at LG Chem, Ltd., a globally recognized leader in chemical and materials production. His role involves research and development in the field of energy storage solutions, where he continues to push the boundaries of lithium battery technologies. His expertise and innovations contribute significantly to the relentless pursuit of higher efficiency and safety in battery usage.

Collaborations

Throughout his career, Han has collaborated with talented colleagues such as Jisang Yu and Jonghwan Kim. Together, they form a team dedicated to advancing battery technology at LG Chem, working synergistically to achieve groundbreaking results in their respective areas of expertise.

Conclusion

Changjoo Han's contributions to lithium secondary battery technology have established him as a prominent figure in the field of energy storage. With his continuous innovation and commitment to improving battery performance and safety, he plays a crucial role in shaping the future of energy solutions. As he pursues further advancements, the impact of his work is sure to resonate across both industry and research communities.