Shinichi Kumakura

Title: Innovations by Shinichi Kumakura in Lithium-Ion Battery Technology

Introduction

Shinichi Kumakura is a prominent inventor based in Cheonan-si, South Korea. He has made significant contributions to the field of rechargeable lithium-ion batteries, holding a total of five patents. His work focuses on enhancing the performance and efficiency of battery materials, which is crucial for the advancement of energy storage technologies.

Latest Patents

Kumakura's latest patents include innovative methods and materials for positive electrodes in rechargeable lithium-ion batteries. One of his notable inventions is a bimodal lithium transition metal oxide-based powder mixture. This mixture consists of two types of lithium transition metal oxides, each with specific particle size distributions that optimize battery performance. The first powder features a particle size distribution characterized by a (D90−D10)/D50 ratio of less than or equal to 1.5, while the second powder comprises single crystal particles with a defined general formula.

Another significant patent describes a method for preparing a powderous positive electrode material that includes single crystal monolithic particles. This method involves a multiple-step sintering process and subsequent wet ball milling to achieve a slurry of deagglomerated primary particles. The resulting material is designed to enhance the efficiency and longevity of lithium-ion batteries.

Career Highlights

Throughout his career, Shinichi Kumakura has worked with notable companies in the field of battery technology, including Umicore and Umicore Korea, Ltd. His experience in these organizations has allowed him to develop and refine his innovative approaches to battery materials.

Collaborations

Kumakura has collaborated with esteemed colleagues such as Jens M Paulsen and Liang Zhu. These partnerships have contributed to the advancement of research and development in lithium-ion battery technology.

Conclusion

Shinichi Kumakura's contributions to the field of lithium-ion batteries through his innovative patents and collaborations highlight his role as a key inventor in this critical area of technology. His work continues to influence the development of more efficient energy storage solutions.