Kumiko Kanai

Title: Kumiko Kanai: Innovator in Non-Aqueous Electrolyte Secondary Batteries

Introduction

Kumiko Kanai is a prominent inventor based in Osaka, Japan. She has made significant contributions to the field of battery technology, particularly in the development of non-aqueous electrolyte secondary batteries. With a total of 3 patents to her name, her work focuses on creating efficient and long-lasting energy storage solutions.

Latest Patents

One of her latest patents involves a non-aqueous electrolyte secondary battery designed to provide an inexpensive solution that allows for reversible charge and discharge. This battery utilizes a stable non-aqueous electrolyte, which enhances its longevity. The invention features a positive electrode that includes a sodium-storing active material, a negative electrode capable of storing sodium, and a non-aqueous electrolyte. The positive electrode active material comprises sodium, nickel, manganese, and a transition metal that can exist in a hexavalent state, such as tungsten. Additionally, the negative electrode may include sodium metal for efficient ion storage and release.

Another patent focuses on the positive electrode material, which consists of sodium manganate powder, carbon black powder as a conductive agent, and polytetrafluoroethylene as a binder. This material is mixed in an N-methylpyrrolidone solution to create a slurry for the positive electrode mixture. A working electrode is then produced by applying this slurry onto a positive electrode collector, while a negative electrode containing tin or germanium is also developed. The non-aqueous electrolyte is created by adding sodium hexafluorophosphate as an electrolyte salt to a solvent made from ethylenecarbonate and diethyl carbonate.

Career Highlights

Kumiko Kanai has worked with notable companies such as Sanyo Electric Co., Ltd. and the Intellectual Property Headquarters of Sanyo Electric Co., Ltd. Her experience in these organizations has allowed her to refine her expertise in battery technology and innovation.

Collaborations

Throughout her career, Kumiko has collaborated with esteemed colleagues, including Masahisa Fujimoto and Takao Inoue. These partnerships have contributed to her success and the advancement of her inventions.

Conclusion

Kumiko Kanai is a trailblazer in the field of non-aqueous electrolyte secondary batteries. Her innovative patents and collaborations highlight her commitment to advancing battery technology.