Lithium-ion batteries are everywhere. They are used in phones and computers.
Reio Praats is a scientist. He researches how to use old batteries for new ones.
Graphite is obtained from old batteries. Graphite has not been used before. Praats found a way to use graphite in new batteries.
This reduces waste. It is good for the environment.
Praats used graphite to make new batteries. These new batteries are cheaper and better.
This technique can be used in the future. It will help store green energy.