LG Energy Solution has successfully implemented a high-capacity solid-state battery structure using sulfur (Sulfur) as a cathode material.
LG Energy Solution announced that the research results jointly conducted with Professor Shirley Meng's research team at the University of Chicago were published in the international academic journal 'Nature Communications' in the energy field on the 27th of last month.
Sulfur (Sulfur) can theoretically achieve high capacity of approximately 1675mAh/g, and has received attention as a next-generation high-capacity cathode material. The advantages include low cost and abundant resources.
However, in the existing liquid electrolyte environment, the 'polysulfide (intermediate substance formed during charging and discharging) dissolution' phenomenon occurred, causing difficulties in securing lifespan and stability.
The joint research team introduced a solid-state battery structure using solid electrolyte instead of liquid electrolyte to block such problems. As a result, they successfully achieved capacity at approximately 1500 milliampere-hour (mAh/g) level and stable lifespan characteristics.
In particular, this achievement is significant in that performance was confirmed even in actual pouch-type cells beyond coin cells. It is evaluated as validating practical battery application possibilities without remaining at the research stage.
