TAIYO YUDEN CO., LTD. has developed all-solid-state lithium-ion secondary batteries by using various technologies including the process technology of multilayer ceramic capacitors (MLCCs).

All-solid-state batteries are secondary batteries in which the electrolyte solution used in conventional lithium-ion secondary batteries is replaced with a solid one.

TAIYO YUDEN has realized all-solid-state batteries using oxide-based solid electrolyte ceramics by applying the materials and process technologies the company has nurtured through the development of its core products, MLCCs.

TAIYO YUDEN says its all-solid-state battery barely reacts with moisture and carbon dioxide contained in the air and will not burn since it contains no electrolyte solution. The possibility of diverting the production process used for MLCCs allows the company to produce a laminated and multilayered solid electrolyte by applying existing process technology, which will contribute to realizing smaller, higher-capacity products.

With a lineup of products of various sizes, the majority of which with the same dimensions as MLCCs from 4532-size (4.5 x 3.2 x 3.2 mm) to 1005-size (1.0 x 0.5 x 0.5 mm), Taiyo Yuden plans to commence sample shipments of the new batteries in 2020 and start mass production in 2021.