Graphene batteries offer several advantages over lithium ion batteries.
They can charge and discharge much faster than lithium ion batteries, meaning that devices powered by graphene batteries would have a much shorter downtime. They can also handle more charge and discharge cycles than lithium ion batteries, meaning that they will last longer.
Graphene batteries are also much safer than lithium ion batteries. This is because the lithium in lithium ion batteries can be highly reactive, and can cause fires if the battery is damaged. Graphene, on the other hand, is much less reactive and is not flammable, meaning that graphene batteries are much less likely to cause fires.