Katsuaki Hasegawa

Title: Katsuaki Hasegawa: Innovator in Nonaqueous Electrolyte Secondary Batteries

Introduction

Katsuaki Hasegawa is a notable inventor based in Yokkaichi, 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 3 patents to his name, Hasegawa's work has had a considerable impact on energy storage solutions.

Latest Patents

Hasegawa's latest patents focus on enhancing the performance of nonaqueous electrolyte secondary batteries. One of his innovations includes a battery design that boasts excellent cycle life characteristics, stability in high-temperature storage, and low-temperature performance. This design features an anode made from a carbon material capable of doping and undoping lithium ions, along with a nonaqueous electrolyte and a cathode containing a lithium-based oxide. The solvent for the nonaqueous electrolyte is a mixed solvent that includes an aliphatic carboxylate, a cyclic carbonate, and a non-cyclic carbonate. The aliphatic carboxylate is represented by the formula RCOOR', where R is an alkyl group with three or more carbon atoms, and R' is an alkyl group with one or two carbon atoms. The cyclic carbonate can be either ethylene carbonate or propylene carbonate.

Another patent by Hasegawa also addresses the same type of battery, emphasizing similar characteristics and components. This design includes an anode with a carbon material for lithium ion doping, a nonaqueous electrolyte, and a cathode with a lithium-containing oxide. The solvent for this electrolyte is also a mixed solvent, featuring an aliphatic carboxylate represented by the formula RCOOR', where R is an ethyl group, and R' is an alkyl group with one to three carbon atoms, along with a cyclic carbonate.

Career Highlights

Throughout his career, Katsuaki Hasegawa has worked with prominent companies such as Mitsubishi Petrochemical Company Limited and Matsushita Electric Industrial Co., Ltd. His experience in these organizations has contributed to his expertise in battery technology and innovation.

Collaborations

Hasegawa has collaborated with notable colleagues, including Hiromi Okuno and Hizuru Koshina. These partnerships have likely fostered a creative environment that has led