Dr. Mutsuaki Murakami publishes a new book on a new method of producing high quality graphite from polymers.

Japan, May 7, 2022, a book titled “Research on the Development of Advanced Graphite Materials” was published. The author is Dr. Mutsuaki Murakami, an enterprise engineer, and it is a unique book that summarizes the results of its many years of research and development on graphite materials.

Mr. Murakami was born in 1946. In 1970, he graduated from Ehime University Graduate School of Engineering, Department of Industrial Chemistry. In the same year, he joined Matsushita Electric Industrial Co., Ltd. (currently Panasonic Corporation) began life as a researcher and technology developer at the Matsushita Research Institute in Tokyo (MRIT). In 1986, he obtained a doctorate in science from the University of Tokyo. In 2001, he left Matsushita Electric Industrial Co., Ltd. and joined Kaneka Corporation. Since 2005, he has also been a visiting professor at the Center for Extreme Environmental Research and Technology at Osaka University.

He has constantly worked on the work of developing new materials and devices by applying heat, electric current and light to organic materials and achieving their commercialization, as a researcher and engineer in companies. This book summarizes the results of his research on the manufacture of high quality graphite from organic polymers (abbreviated GPP method). It is the greatest achievement of his various R&D efforts. In this book, he describes how ADVANCED GRAPHITE is becoming an important material for today’s industry, as well as the various applications and devices that are currently being made. with graphite.

Graphite is a material that has the potential to innovate the industry in the 21st century as it has extremely excellent physical properties that can be called a super material. For example, the electrical conductivity of a high quality graphite ab surface is 1/25 times that of copper and 1.6 × 107 times that of silicon, the carrier mobility is 750 times that of copper and 8 times that of silicon, the thermal conductivity is 5 times that of copper and 12 times that of silicon, and the heat resistance is 3 times that of copper and twice that of silicon. Therefore, graphite with excellent properties should be used more as a base material in industry. However, until recently it was not possible to produce graphite with such ideal properties on an industrial scale. As a result, various active devices taking advantage of the thermal, electrical, electronic and mechanical properties of graphite had not been realized.

However, in recent years, advances in the GPP method developed by the authors have made it possible to produce high-quality graphites of various shapes on an industrial scale, and many active devices have been born from these graphites. This book presents the invention of this method, the elucidation of the mechanism of graphitization, the progress of manufacturing technology and the development of various applications.

Dr. Murakami remembers his accomplishments very conservatively. “40 years ago, graphite was prepared from heat-treated polymers. It started out as an academic study to develop double bonds by thermally treating a polymer and studying its relationship to electrical conductivity. “As the electrical conductivity of the obtained carbon precursors was significantly different, I wanted to process this at a higher temperature to make graphite.” “At the time, graphite had never been made from polymers, and many thought such a challenge was unnecessary. However, it has been found that some polymers become a very high quality graphite film (GF) when heat treated at a high temperature of 3000°C. This was the first discovery to reveal that high quality graphite could be obtained from polymers. “Many years have passed since this study, but I still vividly remember the excitement I felt when I discovered during X-ray measurements that these films were made of high-quality graphite.”

Furthermore, Dr. Murakami stated the following. “Since then, I have continued to research and develop this technique, and with the cooperation of many people, I have realized various forms of graphite and its applications and explored the true properties of graphite. In fact, it There were many challenges and difficulties in realizing a device using the GF obtained by the GPP method. In this book, I have described the process of overcoming these problems and realizing their device and bringing it to market. to date, no book has been compiled from such a perspective and that is the greatest feature of this book that cannot be found in other books, and that is the main reason why I wrote this book.

The first problem with marketing the GF was that the film was tough and brittle. This book describes the process of converting such a film into a flexible and resistant film (FGF) and the realization of its commercialization. FGF is widely used in mobile phones as a heat diffusion film and has contributed greatly to its widespread use. Today, “heat” is a serious problem in many electronic devices. FGF, which has excellent heat conduction characteristics, shows great power as a heat control material by showing wisdom depending on its application. Currently, GF produced by GPP method has become a big industry, and its estimated global production value has reached about USD 1800 million.

The second challenge was that the thickness of high-quality GFs that could be produced by the GPP method was limited to the range of 10–75 μⅿ. The manufacture of thicker graphite was solved by laminating several polymer films and graphitizing them. Several applications have already been made using blocks made by this process. In addition, technologies related to the production of thin-film GFs of 10 μⅿ or less have been developed, and many technological improvements have led to the development of thin-film GFs in the range of 0.01 μⅿ to 3 μm. The developed GF thin film has excellent electrical and electronic properties similar to the highest quality graphite crystals, opening up entirely new applications. The thickness of the graphite produced by these developments differs by a factor of 5 million. This book describes the progress of these R&Ds and explains the expectations for further development.

Dr. Murakami states that this research and development will be further developed, and various devices that utilize the excellent physical characteristics of graphite ab surface will be made in the future, and graphite will be a material that will revolutionize the industry. He added that he hopes this book gives you insight into the life of a corporate engineer and a whole new world of graphite.

This book was published by Index of Sciences Ltd. and is available on amazon. Please click https://www.amazon.com/Research-Development-Advanced-Graphite-Materials/dp/B09TR8HG83 to purchase this book.

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Irene B. Bowles