Shigeki Okada

Title: **Shigeki Okada: Innovator in Lithium Battery Technology**

Introduction

Shigeki Okada, a prominent inventor based in Nishio, Japan, has made significant contributions to the field of lithium battery technology. With an impressive portfolio of 22 patents, his work primarily focuses on advancements in lithium composite oxide materials and battery design.

Latest Patents

Among Okada's latest innovations is a lithium complex oxide sintered body plate, designed for use in the positive electrodes of lithium secondary batteries. This sintered plate features a layered rock-salt structure, characterized by a porosity of 3 to 40% and a mean pore diameter of 15 µm or less. Additionally, the open porosity exceeds 70%, with a thickness ranging from 15 to 200 µm. The primary grains within this structure have a mean diameter of 20 µm or less, and a tilt angle between 0° to 30°, which are defined by the (003) planes of the grains relative to the plate face.

Furthermore, he developed a lithium secondary battery that incorporates a positive electrode layer made of lithium complex oxide sintered body, a titanium-containing sintered body as the negative electrode layer, and a ceramic separator. This innovative battery structure is enclosed within an exterior body, ensuring an efficient assembly of the positive electrode layer, ceramic separator, and negative electrode layer, further enhanced by an electrolytic solution.

Career Highlights

Shigeki Okada has held notable positions in esteemed companies such as NGK Insulators, Inc. and Seiko Epson Corporation. His experiences in these organizations have undoubtedly enriched his knowledge and expertise, enabling him to innovate and contribute valuable advancements in battery technologies.

Collaborations

Throughout his career, Okada has collaborated with esteemed colleagues including Yukinobu Yura and Yukihisa Takeuchi. These partnerships have fostered an environment of shared knowledge, leading to innovative ideas and successful patent applications.

Conclusion

Shigeki Okada's work in lithium battery technology exemplifies the spirit of innovation and progress within the field. His prolific output of patents and collaborations with dedicated colleagues continues to influence advancements in battery materials and design, reinforcing the importance of research and creativity in the technology sector.