SK On Launches All-Solid-State Battery Pilot Plant with 2029 Commercialization Goal

SK On Advances All-Solid-State Battery Development with New Pilot Plant

South Korean battery leader SK On has launched a pilot plant focused on all-solid-state batteries, targeting commercial production by 2029. This timeline accelerates the firm’s initial goal of 2030. The plant will mainly develop sulphide-based all-solid-state batteries, while dedicating some production lines to lithium-metal batteries. SK On uses its proprietary Warm Isostatic Press-free technology, which applies uniform pressure at high temperatures to improve battery density and performance. The company aims to achieve an energy density of 800Wh/L and eventually reach 1,000Wh/L in the long term.

Strategic Partnerships and Recycling Innovation Fuel SK On’s Growth

Earlier this year, SK On merged with SK Enmove, integrating lubricants and cooling technologies for battery systems. SK Innovation also signed a licensing deal with US engineering firm KBR to commercialize battery metal recycling technology. This process recovers lithium hydroxide directly from used batteries. KBR will combine this recycling method with its lithium refining technology. Meanwhile, KBR partners with European energy firm Neptune Energy to produce battery-grade lithium carbonate from gas field brine in Germany, with a potential capacity of 25,000 tonnes per year.

SuperMetalPrice Commentary:

SK On’s all-solid-state battery pilot plant highlights South Korea’s leading role in next-generation battery technology. The use of Warm Isostatic Press-free technology shows innovation that could drive higher energy densities and better performance. Coupled with strategic partnerships in recycling, SK On is positioning itself for sustainable growth and supply chain resilience. The commercial launch planned for 2029 could influence global battery markets and EV supply chains significantly.