Participating in InterBattery from March 11
Showcasing High-Energy LFP and EIS-Based Safety Technologies
SK On is expanding its business beyond electric vehicles to include energy storage systems (ESS) and robotics, unveiling a wide range of next-generation battery technologies. The strategy is to accelerate the diversification of its portfolio to meet various demands in the global market.
On March 2, SK On announced that it will participate in InterBattery 2026, the largest battery exhibition in Korea, which will be held at COEX in Gangnam-gu, Seoul, from March 11 to 13. The exhibition theme is "Unlock the Next Energy."
At this exhibition, SK On will highlight its high energy density lithium iron phosphate (LFP) pouch batteries for ESS. These products are designed to meet the growing demand for large-capacity cells in the global ESS market. The company is currently conducting research and development to increase energy density from the current 350~450Wh/L to around 500Wh/L. SK On plans to improve both lifespan and output performance by increasing electrode density, optimizing internal space, and refining manufacturing processes.
The company will also unveil its safety technology. For the first time in the industry, it will present a container-type ESS DC block equipped with a preventive and diagnostic system based on electrochemical impedance spectroscopy (EIS). This system enables precise analysis of internal battery resistance and reaction characteristics, allowing early detection of micro-defects and degradation stages. It is designed so that only the modules with signs of abnormality need to be replaced, thereby improving maintenance convenience and cost-effectiveness.
SK On will also showcase applications in the robotics field. The booth will feature Hyundai WIA's autonomous mobile robot (AMR) equipped with SK On's high-nickel ternary battery, which is already being used for logistics automation at industrial sites such as Hyundai Motor Group's Meta Plant America (HMGMA).
The company will also reveal its Cell-to-Pack (CTP) technology, which connects cells directly to the pack, omitting the module. This approach increases both energy density and cost competitiveness. SK On will introduce four types of pack solutions: pouch CTP, large-area cooling (LSC) CTP, integrated pouch prismatic pack, and immersion cooling pack. Among these, the LSC technology offers up to three times better cooling performance compared to conventional indirect cooling methods.
In addition, SK On will display next-generation technologies such as sulfide-based all-solid-state batteries (with energy density of 1,000Wh/L), polymer oxide composite batteries, and lithium metal batteries, as well as an ultra-fast charging technology that can charge from 10% to 80% in just seven minutes. The company will also present an immersion cooling technology currently being co-developed with SK Enmove.
An SK On official stated, "We are evolving into a comprehensive battery company that covers not only electric vehicles but also future new markets such as ESS and robotics. We will lead the global market with products that offer cost competitiveness and safety."
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