▎ 摘　　要

Flexible graphene stacks (FGSs) were prepared as a practically useful anode material for sodium-ion batteries (SIBs). The FGSs not only exhibited good electrical and mechanical properties, but also showed exceptional sodium-ion storage capability by utilizing a co-intercalated charge carrier. In addition, SIBs based on FGSs and a previously reported cathode pair exhibited high specific energy and power of approximately 107.7Whkg(-1) and 2050Wkg(-1), respectively, with stable cycling behavior.