Sumitomo, Toyota eye mass-production of EV battery materials

Under the agreement announced Wednesday, the two companies aim to accelerate joint development toward Toyota's goal of achieving the commercial use of all-solid-state batteries in 2027-28.

All-solid-state batteries are said to offer numerous advantages over the current mainstream liquid-based batteries that use electrolyte solutions, including shorter charging times and longer driving ranges for EVs.

The two companies have been conducting joint research since around 2021 and have developed cathode materials with excellent durability.

They now aim to further improve quality and reduce production costs in preparation for mass production.