Using the experience from analyzing such a wide variety of materials to consider battery fields

Analytical technologies for visualizing the chemical reactions occurring throughout a sealed battery

Using the experience from analyzing such a wide variety of materials to consider battery fields

Resonac Holdings Corporation (formerly Showa Denko Materials Co., Ltd.)


    Lithium-ion Batteries, Electronics


    litium-ion battery, LiB, visualizing the chemical reactions


    inspeXio SMX-225CT FPD HR Plus, SPM-Nanoa

Mr. Keiji Sumiya


We interviewed Keiji Sumiya from the Japanese chemical manufacturer Showa Denko Materials Co., Ltd (At the time of the interview., currently, Resonac Holdings Corporation). Showa Denko Materials is a global company that offers one-stop solutions for a variety of challenges in fields ranging from advanced materials to technical services. For many years, Shimadzu Corporation has provided support for all sorts of analytical processes involved in R&D work at Showa Denko Materials.


Mr. Keiji Sumiya

Mr. Keiji Sumiya

General Manager of Materials Analysis, Advanced Technology Research and Development Center, Innovation Promotion Headquarters, Showa Denko Materials Co., Ltd.

*Affiliates and titles of the interviewee are current as of the time of reporting.

Resonac Holdings Corporation (formerly Showa Denko Materials Co., Ltd.)

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Would you give us a brief overview of the main businesses of Showa Denko Materials, the mission of your organization, and your personal area of expertise?

Showa Denko Materials is a Japanese chemical manufacturer of semiconductor and electronics-related materials, mobility materials, functionally engineered polymer materials, and life sciences-related products. The company was originally a chemical products division of Hitachi, Ltd. It was spun off in 1962 to establish the former Hitachi Chemical Co., Ltd. Throughout our long history, we have continued to develop and release advanced functionally engineered materials in various fields.
I currently work in the analysis department, where we use sophisticated analytical technologies to fulfill our mission of providing strong support for product development and intellectual property strategies for functionally engineered materials. read more

In your diverse development experience, what are some of the key points for your team from pioneering such innovative new technologies for LiB material development?

Cell Cross Section


To overcome analytical challenges in developing LiB materials, we have been focusing on visualizing the 2D and 3D distribution of compounds. LiBs have a relatively simple structure, but they still involve many factors that need clarification. Basically, LiBs are a combination of positive electrodes (inorganic powder), negative electrodes (inorganic powder), separators (organic membranes), and electrolyte solution (organic liquid); consequently, the components of LiBs consist of mixed materials: solid, liquid, inorganic and organic. read more

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