Hideaki Ohtsuka

Title: Innovations by Hideaki Ohtsuka

Introduction

Hideaki Ohtsuka is a notable inventor based in Mito, Japan. He has made significant contributions to the field of battery technology, holding 2 patents that showcase his innovative approach to energy storage solutions.

Latest Patents

Ohtsuka's latest patents include a cathode material and a secondary battery utilizing this material. The cathode material is made of anhydrous ferric sulfate with a hexagonal crystal structure, designed for use in a secondary battery that generates a stable open-circuit voltage of about 3.6 volts. This battery offers a recharge cycling capacity of over 100 times. The cathode material is produced by heating hydrous iron sulfate in a temperature range between 250°C and 600°C to remove the water of crystallization. The secondary battery made with this cathode material provides a long service life and stable output voltage economically, as iron sulfate is abundantly available at a relatively low cost. Another patent involves a lithium battery that includes a vanadium pentoxide-based amorphous cathode. This battery consists of an amorphous cathode active material mainly composed of V₂O₅, combined with various additives, and features a small size, lightweight design, and high energy density.

Career Highlights

Ohtsuka is currently employed at Nippon Telegraph and Telephone Corporation, where he continues to develop innovative technologies in the field of energy storage. His work has contributed to advancements in battery efficiency and longevity.

Collaborations

Some of his notable coworkers include Shigeto Okada and Masasi Shibata, who have collaborated with him on various projects.

Conclusion

Hideaki Ohtsuka's contributions to battery technology reflect his commitment to innovation and sustainability. His patents demonstrate a forward-thinking approach to energy solutions that could have a lasting impact on the industry.