Graphdiyne for mass transport and interfacial regulation in rechargeable lithium-based batteries

Graphdiyne (GDY), an emerging two-dimensional carbon allotrope, has recently been recognized not only as a conductive frame but also as an active regulator of mass transport and interfacial chemistry in rechargeable batteries. Its sp- and sp²-hybridized framework, enriched with alkyne bonds and extended π-conjugation, endows GDY with unique adaptability in both structural evolution and electronic modulation. These intrinsic features have stimulated a series of new concepts. Collectively, these concepts highlight GDY's dual role in facilitating mass transport and stabilizing interfaces. This feature summarizes recent advances in GDY-mediated transport and interfacial regulation, highlighting design principles, mechanistic understanding, and the correlation between structure and electrochemical performance. The review further emphasizes the significance of GDY as a versatile carbon platform, which is crucial for achieving high-rate capability, high energy density, and interfacial stability. It offers guidance for the rational design of next-generation rechargeable batteries.