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Idemitsu, a Japanese company, will build a lithium sulphide facility to support Toyota's EV plan

Idemitsu Kosan, Japan's second largest oil refiner, plans to build at its Chiba refinery near Tokyo a large-scale lithium sulphide plant, which is a key component for solid-state batteries.

Worldwide, automakers and battery suppliers are

racing

Solid-state batteries are touted as essential for safer, longer-lasting and more affordable EVs.

Slowing growth of EV

The project builds upon Idemitsu’s partnership with Toyota Motor in order to commercialise the next-generation batteries. It also supports Toyota Motor’s goal of launching all-solid state batteries for electric vehicles by 2027-2028.

Toyota aims at introducing the batteries in order to dramatically improve the driving range for EVs. Solid-state batteries charge faster than lithium-ion packs.

Idemitsu intends to finish the new plant in June 2027 at a cost estimated at 21.3 billion yen (143 million dollars).

Idemitsu's Executive Officer Tetsuji Mihina, told reporters in Chiba that the facility would have a capacity of 1,000 tons of lithium-sulphide per year. This is enough to provide solid electrolyte needed for 50,000-60 000 EVs.

Mishina stated that Idemitsu will make a final decision about the investment in a large-scale factory to produce solid electrolyte - a key component for solid-state battery - in fiscal year 2025. This ends in March 2026.

The company is also looking for stable lithium supply from Australia and other sources overseas.

Mishina stated that lowering the cost of solid electrolytes is key to global adoption. The goal is to bring costs in line with those of liquid lithium ion batteries.

Idemitsu will initially supply solid electrolyte only to Toyota, and then expand to other customers. Mishina stated that the company is developing two types of solid electrodelyte.

(source: Reuters)