As major battery manufacturers accelerate the commercialization of solid-state batteries (SSBs), South Korea’s battery materials industry is also speeding up product development and production, targeting the emerging demand. Efforts now span multiple areas, including cathode and anode materials, SSBs, and key raw materials. Observations from the show floor at InterBattery 2026 indicate that South Korean materials suppliers are advancing toward mass commercialization through cross-company collaboration and vertical integration.