Sumitomo, Kyoto team on solid state batteries

Sumitomo, Kyoto team on solid state batteries

Technology News |
By Nick Flaherty

Professor Takeshi Abe of the Graduate School of Engineering and Faculty of Engineering at Kyoto University will lead laboratory-scale manufacturing facilities for solid state batteries, along with battery performance evaluation test systems for characterisation, at the Katsura Campus, starting in two weeks’ time.

Solid state batteries use a solid electrolyte and so are safer than the current mainstream lithium-ion rechargeable batteries, and are also expected to achieve higher battery capacity, longer cycle life, and quicker charging. Sumitomo is looking at supplying components and materials for electric vehicles as well as consumer designs.

“Solid-type batteries are the ultimate form of batteries, but they have not yet been mass-produced as medium- and large-sized batteries, such as those used in automobiles, because of high resistance at the interface between the active material and the solid electrolyte, among many other issues,” said Abe.

“We aim to develop a unique material for a further evolved type of solid-type battery to overcome such issues. To undertake fundamental research on materials for positive and negative electrodes, solid electrolytes, and the components that make up the interface, we will gather knowledge of inorganic, organic, polymer, electrochemical, and computational chemistry. In this joint effort between industry and academia, we will engage in thorough and deep discussions to clarify the nano interface phenomenon, optimally design a solid-type battery system, and aim to build a new solid-type battery that makes both safety and high energy density possible,” he added.

“Combining Kyoto University’s extensive and in-depth basic research skills with our experience and expertise in commercializing various materials and the manufacturing capability we have cultivated to date by learning from a number of failures, we will develop solid-type batteries and contribute to the building of a sustainable society,” said Hiroshi Ueda, Executive Vice President of Sumitomo Chemical.

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