Graphene batteries aren't powering smartphones and other gadgets just yet, although Samsung is rumored to have something in the works. In the future, graphene could be the material that replaces the lithium-ion batteries that the technology industry has become so reliant on for decades.

What will replace lithium?

Sodium-ion batteries

Scientists in Japan are working on new types of batteries that don't need lithium like your smartphone battery. These new batteries will use sodium, one of the most common materials on the planet rather than rare lithium – and they'll be up to seven times more efficient than conventional batteries.

Are graphene batteries the future?

Graphene batteries are now being researched for a wide range of commercial uses because they are long-lasting, light, and ideal for high-capacity energy storage. ... These batteries are the newer technology that allows for faster cycle times and higher electrode density.