Naohiko Oki

Title: Naohiko Oki: Innovator in Electric Double-Layer Capacitors

Introduction

Naohiko Oki is a prominent inventor based in Wako, Japan. He has made significant contributions to the field of electric double-layer capacitors, holding a total of 13 patents. His innovative methods and designs have advanced the technology used in energy storage devices.

Latest Patents

One of Oki's latest patents is a method for producing activated carbon for the electrode of an electric double-layer capacitor. This method involves several steps, including pulverizing massive mesophase pitch, infusibilizing the pulverized powder, carbonizing it in an inert gas current, and subjecting it to an alkali activating treatment. The resulting alkali-activated carbon can significantly increase the density of the electrode. Another notable patent involves the design of an electrode for electric double-layer capacitors, which utilizes a quaternary ammonium borofluoride compound in propylene carbonate as an electrolyte. This design incorporates alkali-activated carbon and a conductive filler, resulting in a capacitor with large electrostatic capacity and excellent durability.

Career Highlights

Oki has worked with notable companies such as Honda Giken Kogyo Kabushiki Kaisha and Honda Motor Co., Ltd. His experience in these organizations has contributed to his expertise in the development of advanced capacitor technologies.

Collaborations

Throughout his career, Oki has collaborated with talented individuals, including Minoru Noguchi and Kenji Sato. These partnerships have fostered innovation and the sharing of ideas in the field of energy storage.

Conclusion

Naohiko Oki's contributions to the development of electric double-layer capacitors and his innovative methods for producing activated carbon have made a significant impact in the field. His work continues to influence advancements in energy storage technology.