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Abstract Although zinc metal anodes have some intrinsic advantages for aqueous zinc ion batteries, the notorious dendrites hamper its practical applications. Herein, a charge‐enriched strategy through MXene‐based polypyrrole (MXene‐mPPy) layers is explored toward dendrite‐free Zn metal anode. The MXene‐mPPy layers composed of mesoporous PPy on both sides of Ti 3 C 2 T x ‐MXene exhibit an exceptional charge enrichment ability (149 F g −1 , 5 mV s −1 ), which is beneficial not onlying terms of accumulating the charge levels, but also to homogenize the dispersions of electric field and ion flux as used as an artificial interface on a Zn anode. Thus, a dendrite‐free Zn anode with an ultralong cycling lifespan up to 2500 h and superior rate capability is achieved, which is further applied as an anode for aqueous zinc ion batteries with a long‐term span over 3000 cycles at 10 A g −1 .
Zhang et al. (Wed,) studied this question.