SK On to unveil prismatic battery cell model at InterBattery 2023

10 March 2023, 04:10:14

SK On to unveil prismatic battery cell model at InterBattery 2023SK On revealed that it would display a mock-up of a prismatic battery at InterBattery 2023, the largest battery exhibition in Korea, to be held at COEX, Seoul from March 15 to 17. SK On has completed prototype development and plans to begin producing this type of cell within this year.

The prismatic battery of SK On is characterized by its fast-charging speed. SK On’s Super Fast (SF) battery, which received the Best of Innovation Awards at CES 2023, can charge up to 80% in 18 minutes, and the prismatic cell of SK On is going to enhance the speed further. The launching of the prismatic cell will help SK On, which has been mainly producing pouch type, to reach more customers.

The key point of SK On’s exhibition at InterBattery 2023 is its diversified Cell Portfolio, which has not been disclosed so far. Along with the prismatic battery, the company will also unveil its LFP battery and the Cobalt Free (Co-Free) battery, which excludes cobalt completely. In addition, all solid-state batteries that incorporate SK On’s unique next-generation technology will also be displayed.

SK On succeeded in developing a Co-Free battery more than a year ahead of its target date. Ternary lithium batteries typically have a shorter lifespan without cobalt due to structural instability, but SK On has overcome this critical flaw. Furthermore, SK On has improved the energy density problem of Co-Free batteries through its proprietary high-nickel technology, resulting in an extended driving range. Cobalt, the most expensive material among the ternary lithium battery materials, will be replaced with either of nickel or manganese, which is expected to increase its price competitiveness.

This year’s exhibition will also feature SK On’s prototype LFP battery. Under cold weather, the mileage of a vehicle using an LFP battery is sharply decreased, normally to only 50% to 70% when the temperature hits -20 Celsius degree. However, SK On improved this problem, increasing the level to 70% ~ 80%. It is thanks to the fact that SK On applied the material and electrode technology it accumulated through high-nickel batteries to LFP batteries. Although LFP batteries have a shorter driving range than ternary lithium batteries, they are cost-effective. It was evaluated for hitting two birds with one stone: technology and price.

The prototype of SK On’s all-solid-state batteries, which are under development as next-generation batteries, will also be displayed at InterBattery 2023. Choi Kyoung-hwan, who is leading the development of SK On’s next-generation batteries, will deliver a speech titled “All-solid-state Batteries: SK On’s Technology Strategy for Safer Batteries” on the opening day, March 15. To realize a safe battery with high energy density, SK On is now developing sulfide-based all-solid-state batteries and the high molecular/oxide-based all-solid-state batteries.

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