Kohei Murayama

Title: Kohei Murayama: Innovator in Graphite Technology

Introduction

Kohei Murayama is a prominent inventor based in Fukuoka, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced graphite technologies. With a total of two patents to his name, Murayama's work focuses on enhancing the properties and applications of graphite materials.

Latest Patents

Murayama's latest patents include innovative processes for producing graphite particles and anode materials for lithium secondary batteries. One of his patents describes a method for producing graphite particles with a bent laminate structure. This process involves feeding graphite particles with an average diameter of 5 mm or less into an impact grinder, where they are subjected to a gas current and compression force. The resulting graphite particles have an average diameter of 100 µm or less, exhibit low anisotropy, and possess a nearly spherical shape with high crystallinity.

Another significant patent focuses on an anode material for lithium secondary batteries. This material comprises graphite particles with a bent laminate structure and a crystalline carbon coating layer. The production process involves grinding graphite to achieve the desired particle size and then applying chemical vapor deposition in a fluidized bed type reaction furnace to form the coating layer. These advancements are crucial for improving the performance of lithium batteries.

Career Highlights

Kohei Murayama is associated with Mitsui Mining Co., Ltd., where he continues to innovate and develop new materials. His work has positioned him as a key figure in the field of graphite technology, contributing to advancements that have practical applications in various industries.

Collaborations

Murayama collaborates with notable colleagues, including Kenji Fukuda and Tadanori Tsunawaki. Their combined expertise fosters a collaborative environment that enhances the research and development of new materials.

Conclusion

Kohei Murayama's contributions to graphite technology and lithium battery materials highlight his role as an influential inventor. His innovative patents reflect a commitment to advancing material science, which has significant implications for energy storage solutions.