Katsuhide Nagaoka

Title: Innovations of Katsuhide Nagaoka

Introduction

Katsuhide Nagaoka is a notable inventor based in Kagawa, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced materials for lithium-ion batteries. With a total of 2 patents to his name, Nagaoka's work is recognized for its innovative approaches and practical applications.

Latest Patents

Nagaoka's latest patents include an anode material for lithium-ion secondary batteries. This invention utilizes a coated graphite powder as a raw material, which is coated with a thermoplastic resin that has a carbonization yield of ≤20 wt % in a proportion of ≤10 parts by weight of the carbonized material per 100 parts by weight of graphite powder. The coating with thermoplastic resin increases the accumulative pore volume by ≤5% compared to the uncoated powder, resulting in pore sizes ranging from 0.012 to 40 μm as measured by the mercury porosimeter method. Additionally, the coated graphite powder exhibits a mesopore volume of ≤0.01 cc/g, which is ≤60% of the pore volume of the uncoated graphite powder. The average particle size of this coated powder ranges from 10 to 50 μm, with a standard deviation to the average particle size (σ/D) ratio of ≤0.02. Another significant patent involves a crucible for crystal pulling and the method of manufacturing the same.

Career Highlights

Katsuhide Nagaoka is currently associated with Toyo Tanso Co., Ltd., where he continues to innovate and develop new materials. His work has been instrumental in advancing technologies related to energy storage and materials engineering.

Collaborations

Nagaoka has collaborated with notable colleagues such as Masatoshi Yamaji and Toshiharu Hiraoka. Their combined expertise has contributed to the success of various projects and innovations within the company.

Conclusion

Katsuhide Nagaoka's contributions to the field of materials science, particularly in lithium-ion battery technology, highlight his role as a significant inventor. His innovative patents and collaborations reflect his commitment to advancing technology and improving energy storage solutions.