The plant with an annual production capacity of 340 million square meters is the second overseas LiBS plant following the plant set up in Changzhou in China.
In October, SK Innovation said it plans to spend 400 billion won to build the LiBS plant in China.
The separator is a key component of high capacity electric vehicle power packs that drive electric cars.
SK Innovation also said it would expand the capacity of its LiBS plant in South Korea to 530 million square meters from the current 360 million square meters.
When the construction of the LiBS plants in China and Poland is completed, SK Innovation will have an annual LiBS output of 1.21 billion square meters.
By Ram Garikipati and newswires (email@example.com)