Recent advances in the application of carbon materials in all-solid-state batteries

All-solid-state batteries (ASSBs) have emerged as an ideal choice for next-generation energy-storage systems due to their high safety and high energy density. However, issues such as poor solid-solid interface contact and low ionic conductivity have hindered their further commercialization. Carbon materials, with their unique physical and chemical properties, offer potential for improving the performance of ASSBs. Based on this, this review provides a comprehensive overview of the latest advancements in the application of carbon materials in ASSBs. It first details the issues affecting the performance of ASSBs, followed by an introduction to the various categories of carbon materials with distinct characteristics that can be used in ASSBs, including graphene, carbon nanotubes, carbon dots, and carbon fibers. It then delves into strategies for applying carbon materials to the electrolytes, cathodes, and anodes of ASSBs, offering solutions to address key challenges. Finally, this review outlines the key challenges and future prospects, providing guidance and insights for the rational design and selection of carbon materials for next-generation ASSBs.