Tatsuji Numata

Title: Tatsuji Numata: Innovator in Battery Technology

Introduction

Tatsuji Numata is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of battery technology, particularly in the development of nonaqueous electrolyte secondary batteries. With a total of two patents to his name, Numata's work is paving the way for advancements in energy storage solutions.

Latest Patents

Numata's latest patents include a method of manufacturing nonaqueous electrolyte secondary batteries. This innovative method involves the reduction of an organic acid included in a nonaqueous electrolyte solution. During the preparation of a film-covered battery, the nonaqueous electrolyte solution is injected into the covering of the battery, which contains an electrode with active materials and the organic acid. The organic acid is decomposed by electrical charging until a voltage level reaches or exceeds its decomposition voltage, allowing the gas produced by this decomposition to be degassed from the cut portion of the covering.

Another notable patent is for a mixed electrode for nonaqueous electrolyte batteries. This mixed electrode comprises a first active material, a second active material that reacts with water more readily than the first, an organic moisture capture agent, and an organic binder. The organic moisture capture agent is integrated into the organic binder, and the first active material has a smaller specific surface area than the second. This design improves the storability of the mixed electrode and enhances the cycle characteristics of the battery when applied.

Career Highlights

Tatsuji Numata is currently associated with Automotive Energy Supply Corporation, where he continues to innovate in the field of battery technology. His work is crucial in addressing the growing demand for efficient and reliable energy storage solutions.

Collaborations

Numata collaborates with notable colleagues, including Hidetoshi Tamura and Ippei Waki. Their combined expertise contributes to the advancement of battery technologies and the development of innovative solutions in the automotive energy sector.

Conclusion

Tatsuji Numata's contributions to battery technology through his patents and collaborations highlight his role as a key innovator in the field. His work not only enhances the performance of nonaqueous electrolyte batteries but also supports the ongoing evolution of energy storage solutions.