The image illustrates the innovative use of large-scale graphene (Gr) foils in lithium-ion batteries, highlighting their role in enhancing thermal management. On the left, a roll of the large-scale graphene foil is shown, representing the industrial-scale production capability of this advanced material. On the right, the battery cross-section demonstrates how the thermoresponsive graphene current collectors are integrated into the battery’s structure, replacing traditional metal foils. These graphene collectors are positioned near the anode and cathode, enhancing ultrafast thermal dispersion within the battery. This design significantly reduces the risk of overheating, thereby improving safety and performance, particularly in high-demand applications like electric vehicles and portable electronics (source nature.com)