South Korean battery maker Samsung SDI plans to start verifying its dry electrode technology in 2025, a senior executive announced.
Cho Chae-woong, head of Samsung SDI’s Electrode Group, said the verification will take place at the company’s new pilot line called DryEV, located at its Cheonan facility. He made the announcement during the Global Battery Foundry Forum hosted by TheElec at Coex.
Cho explained that the success of the dry electrode technology relies on the fibrosis of the polytetrafluoroethylene (PTFE) binder and the even distribution of the conductive agent. The main difference between dry and traditional wet electrodes is the type of binder used.
Under pressure and shear force, the PTFE binder transforms into fibers. These fibers create a supportive layer that holds the conductive materials evenly distributed as powders. Together, they form a strong, durable electrode film.
Unlike the wet electrode process, the dry method does not use solvents or require drying steps. This reduces the number of machines needed and lowers power consumption in battery production.
Samsung SDI is also exploring the use of dry electrode technology in its solid-state batteries, aiming to enhance performance and manufacturing efficiency.
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