Fumiyoshi Ono

Title: Fumiyoshi Ono: Innovator in Cathode Electroactive Materials

Introduction

Fumiyoshi Ono is a prominent inventor based in Nagano, Japan. He has made significant contributions to the field of lithium-ion batteries, particularly in the development of cathode electroactive materials. With a total of 7 patents to his name, Ono's work has had a substantial impact on energy storage technologies.

Latest Patents

Ono's latest patents focus on a cathode electroactive material designed for use in lithium-ion secondary cells. This innovative material predominantly comprises Li-Mn composite oxide particles with a spinel structure. The electroactive material features an average porosity of 15% or less, calculated using a specific equation that considers the total cross-section area of pores and the cross-section area of one secondary particle. Additionally, it boasts a tapping density of 1.9 g/ml or more, crystallite sizes ranging from 400 to 960 nm, and a lattice constant of 8.240 nm or less. The resulting particles are dense and spherical, exhibiting excellent packing characteristics for electrodes, along with high initial capacity and capacity retention at elevated temperatures.

Career Highlights

Throughout his career, Fumiyoshi Ono has worked with notable companies, including Showa Denko K.K. and Showa Denko Kabushiki Kaisha. His expertise in materials science and engineering has positioned him as a key figure in the development of advanced battery technologies.

Collaborations

Ono has collaborated with esteemed colleagues such as Takao Noda and Akihiko Shirakawa. These partnerships have further enhanced his research and innovation in the field of electroactive materials.

Conclusion

Fumiyoshi Ono's contributions to the development of cathode electroactive materials have significantly advanced lithium-ion battery technology. His innovative approaches and collaborations continue to influence the energy storage industry.