It has to do with making silicon anodes more stable and resistant to swelling.
There are fantastic materials for creating batteries. The problem is that some of them swell too much when charging or discharging. That damages the cell structure and kills the battery. This is why we still have not seen a silicon anode in production so far. Yet, researchers from the Korea Institute of Science and Technology (KIST) may have solved this for good with a simple recipe that involves corn and sweet potato starch.
Gallery: Corn And Sweet Potato Starch May Help Create Better Batteries