On the 14th, BK Dongyoung Tech announced that it has signed a solid-state battery supply contract worth 126 billion KRW with Beomhan Motors, a company specializing in eco-friendly buses. Through this contract, BK Dongyoung Tech will supply batteries for 1,000 buses over the next three years.


The batteries supplied by BK Dongyoung Tech are a type of solid-state battery called lithium-free solid (LFS) batteries. They do not use rare earth elements and instead utilize nine types of physicochemical reactions involving nickel, manganese, cobalt, and malonic acid graphite, making them significantly less prone to explosion compared to conventional batteries.


The battery capacity per vehicle ranges from 300 to 351 kWh, enabling driving distances of 200 to 300 km with a maximum one-hour fast charge. This marks the world's first case of solid-state batteries being installed in commercial buses, with a volumetric energy density exceeding 500 watt-hours per liter (Wh/L), and it is expected to qualify for national subsidies.


The company stated, "Experimental results conducted with ETRI (Electronics and Telecommunications Research Institute) Honam Research Center showed that the LFS battery maintained stable charging and discharging even in extreme temperatures of minus 40 degrees Celsius and above 70 degrees Celsius. It has a higher energy density and shorter charging time than liquid electrolyte and lithium-ion batteries, respectively, and is expected to bring innovation to the battery market."


Previously, BK Dongyoung Tech announced that it had conducted quality verification of the LFS battery with Dr. Gilhaeng Lee’s energy team at ETRI Honam Research Center and received the result report. According to ETRI, BK Dongyoung Tech’s battery density reaches 522 watt-hours per liter.



Lee Ki-hong, CEO of BK Dongyoung Tech, emphasized, "We will do our best in future research and development and battery production to install solid-state batteries in commercial buses together with Beomhan Motors. Starting with this contract, we will strive to secure additional supply contracts for large buses and other vehicles."


This content was produced with the assistance of AI translation services.

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