3D Graphene for Flexible Batteries

The rapid advancement and widespread usage of flexible electronic devices need the development of flexible batteries, which depend on the use of flexible electrodes. The special electrical conductivity, mechanical stability, and switchable surface characteristics of graphene make it a great choice. Flexible batteries have recently seen a dramatic increase in the use of electrodes made of graphene. This chapter examines the usage of 3D graphene electrodes (based on hydrogels, aerogels, sponges, and foams) in flexible lithium-ion, metal-air, and metal-ion batteries. It appears to have unique qualities like a three-dimensional structure, a large surface area, and high porosity that increase active sites, allow for the doping of active substances, increase the mobility and effectiveness of electrolytes, and boost efficiency in both applications and devices. The challenges and expectations for the use and advancement of flexible batteries are addressed in the final stage.