Tsutomu Nishioka

Title: **Inventor Tsutomu Nishioka: Pioneering Innovations in Battery Technology**

Introduction

Tsutomu Nishioka, an accomplished inventor based in Osaka, Japan, has made significant contributions to the field of battery technology with a remarkable total of 11 patents to his name. His innovative approach is evident in several of his latest patents, which focus on enhancing the efficiency and safety of nonaqueous electrolyte secondary batteries.

Latest Patents

Among Nishioka's latest patents is the development of a positive electrode active material for nonaqueous electrolyte secondary batteries. This material not only boasts high energy density but also exhibits excellent cycle characteristics. The invention is represented by the general formula LiNiCoMO, where M signifies at least one metal element. The positive electrode material consists of particles that are aggregates of crystallites, with each particle demonstrating a compressive breaking strength ranging from 200 MPa to 500 MPa. Additionally, the crystallite diameter in the particle's vector direction is between 100 nm and 300 nm.

Another notable patent is the small cylindrical lithium-ion secondary battery featuring a safety mechanism designed to release internal pressure during anomalies. This innovative battery includes an electrode group composed of a positive and negative electrode, separated by a separator. It also contains an electrolytic solution within a battery case that has an outer diameter of 10 mm or less. A unique sealing body features a valve member that cleaves under predetermined internal pressures, ensuring safe operation.

Career Highlights

Nishioka has had a distinguished career, contributing his expertise to renowned companies such as Nitto Denko Corporation and Panasonic Corporation. His work has been instrumental in driving advancements in battery technology, demonstrating his commitment to innovation and safety in the energy sector.

Collaborations

Throughout his career, Nishioka has collaborated with notable colleagues, including Hisataka Ito and Kazuhiro Ikemura. These partnerships have fostered an environment of creativity and technical excellence, leading to the successful development of cutting-edge battery solutions.

Conclusion

In summary, Tsutomu Nishioka stands out as an influential inventor in the realm of battery technology, with a focus on creating materials and systems that enhance performance and safety. His contributions continue to shape the future of energy storage, underscoring the importance of innovation in this dynamic field.