Takefumi Sumitomo

Title: Takefumi Sumitomo: Innovator in Battery Technology

Introduction

Takefumi Sumitomo is a prominent inventor based in Anan, Japan. He has made significant contributions to the field of battery technology, particularly in the development of electrode active materials for non-aqueous secondary batteries. With a total of 4 patents to his name, Sumitomo's work is recognized for its innovative approaches to enhancing battery performance.

Latest Patents

Sumitomo's latest patents include a method for producing an electrode active material for non-aqueous secondary batteries. This method involves using a carbon material modified with a one-electron oxidant to create a battery with superior durability and output characteristics. The process includes contacting a carbon material, such as graphene or carbon nanotubes, with a one-electron oxidant to obtain a modified carbon material. Additionally, he has developed another method that utilizes a dispersion containing graphene and alkali-metal-transition-metal composite oxide particles, ensuring high dispersibility for optimal performance.

Career Highlights

Throughout his career, Takefumi Sumitomo has worked with notable organizations, including Nichia Corporation and the Tokyo Institute of Technology. His experience in these institutions has allowed him to refine his expertise in battery technology and contribute to advancements in the field.

Collaborations

Sumitomo has collaborated with esteemed colleagues, including Hiroaki Takahashi and Akihiro Tokai. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Takefumi Sumitomo's contributions to battery technology through his innovative patents and collaborations highlight his role as a key figure in the field. His work continues to influence the development of more efficient and durable battery systems.