Samsung SDI Co Ltd (Samsung SDI) is a manufacturer of electronic display and energy products. The company produces automotive batteries, energy storage systems (ESS), and small-sized lithium-ion batteries. Samsung SDI provides materials solutions for high-performing and highly integrated memory and process chips. It also provides semiconductor and display materials. Samsung SDI serves industries such as automotive, electronics, and energy storage. The company has domestic manufacturing centers in Ulsan, Cheon-an, Cheong-ju, and Gumi.

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Samsung SDI is actively pursuing R&D initiatives to enhance its technological competitiveness in the battery and electronic materials sectors. The company is focusing on developing next-generation battery technologies such as All Solid Battery and lithium-sulfur batteries, improving battery safety, extending battery life, and increasing energy density. Samsung SDI is also working on high energy density materials for premium platform batteries and mid-nickel cathode materials for volume platform batteries. Additionally, the company is developing LFP materials for entry EV platform and ESS batteries, and has begun mass production of the 46-phi cylindrical battery and batteries with Cell to Pack (CtP) technology. The R&D units of Samsung SDI include the R&D Center, Advanced Manufacturing R&D Center, and Development Offices within each business division. The R&D Center is responsible for advanced R&D for materials, electrodes, and next-generation batteries. The Advanced Manufacturing R&D Center focuses on developing new process technologies and equipment to improve productivity and quality. Development Offices are tasked with product development for commercialization. Samsung SDI has established overseas research centers in Munich, Boston, Shanghai, and Singapore, contributing to a global R&D network. In FY2025, Samsung SDI incurred an expenses of KRW1,297,600 million on its R&D, which as a percentage of revenue stood at 9.8%.