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 107.7 Wh kg −1 and 2050 W kg −1 , respectively, with stable cycling behavior.
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Choe et al. (2017) studied this question.
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