Hiroyuki Usui

Title: Hiroyuki Usui: Innovator in Lithium-Ion Battery Technology

Introduction

Hiroyuki Usui is a prominent inventor based in Tottori, Japan. He has made significant contributions to the field of lithium-ion battery technology, holding 2 patents that showcase his innovative approach to energy storage solutions.

Latest Patents

One of his latest patents focuses on a negative electrode for lithium-ion secondary batteries. This invention provides an anode active material that enhances charge/discharge capacity and cycle characteristics, as well as high rate performance. The anode active material consists of particles with a crystal phase represented by RAx, where R includes rare earth elements like Sc and Y, excluding La, and A is either Si or Ge. The patent also describes a secondary battery negative electrode material that includes a Si particle coated with a material containing Ni and P, which forms an active material layer on a current collector layer.

Career Highlights

Hiroyuki Usui has worked with notable organizations such as Hitachi Metals, Ltd. and Tottori University. His experience in these institutions has allowed him to develop and refine his expertise in battery technology.

Collaborations

He has collaborated with colleagues like Hiroki Sakaguchi and Ryouji Inoue, contributing to advancements in the field through teamwork and shared knowledge.

Conclusion

Hiroyuki Usui's work in lithium-ion battery technology exemplifies innovation and dedication to improving energy storage solutions. His patents reflect a commitment to enhancing battery performance, making significant strides in the industry.