Hisashi Takeda

Title: Hisashi Takeda: Innovator in Redox Flow Battery Technology

Introduction

Hisashi Takeda is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of energy storage, particularly in the development of redox flow batteries. With a total of 4 patents to his name, Takeda's work focuses on enhancing the efficiency and performance of these innovative energy systems.

Latest Patents

Hisashi Takeda's latest patents include groundbreaking advancements in redox flow secondary batteries. One notable patent is for a separation membrane designed for redox flow secondary batteries. This invention features an electrolytic cell that includes a positive electrode cell, a negative electrode cell, and a separation membrane that effectively separates the two. The separation membrane is characterized by a microporous structure and an ion-exchange resin layer, which significantly improves the battery's performance. The air resistance of this membrane is measured at 10,000 sec/100 cc or more per thickness of 200 μm. Additionally, the microporous membrane is composed of polyolefin resin or vinylidene fluoride resin combined with an inorganic filler, ensuring optimal functionality.

Another patent focuses on a microporous membrane winding, which consists of a microporous membrane wound around a core. This core has an outer diameter of 5 inches or greater and features a surface roughness of 3.0 μm or less. This design allows for the production of a microporous membrane that exhibits excellent thickness uniformity, making it ideal for use as a separator in lithium-ion secondary batteries.

Career Highlights

Throughout his career, Hisashi Takeda has worked with notable companies such as Asahi Kasei E-materials Corporation and Ekc Technology Inc. His experience in these organizations has allowed him to refine his expertise in battery technology and materials science.

Collaborations

Takeda has collaborated with several professionals in his field, including Daisuke Inagaki and Wai Mun Lee. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Hisashi Takeda is a key figure in the innovation of redox flow battery technology. His patents reflect a commitment to improving energy storage solutions, which are crucial for the future of sustainable energy. His work continues to influence the field and inspire future advancements in battery technology.