A Seamless Metal–Organic Framework Interphase with Boosted Zn<sup>2+</sup> Flux and Deposition Kinetics for Long-Living Rechargeable Zn Batteries
Huanhuan Sun, Yu Huyan, Na Li, Da Lei, Huanyan Liu, Wei Hua, Chunguang Wei, Feiyu Kang, Jian‐Gan Wang
Abstract
Zn metal has received immense interest as a promising anode of rechargeable aqueous batteries for grid-scale energy storage. Nevertheless, the uncontrollable dendrite growth and surface parasitic reactions greatly retard its practical implementation. Herein, we demonstrate a seamless and multifunctional metal–organic framework (MOF) interphase for building corrosion-free and dendrite-free Zn anodes. The on-site coordinated MOF interphase with 3D open framework structure could function as a highly zincophilic mediator and ion sifter that synergistically induces fast and uniform Zn nucleation/deposition. In addition, the surface corrosion and hydrogen evolution are significantly suppressed by the interface shielding of the seamless interphase. An ultrastable Zn plating/stripping is achieved with elevated Coulombic efficiency of 99.2% over 1000 cycles and prolonged lifetime of 1100 h at 10 mA cm –2 with a high cumulative plated capacity of 5.5 Ah cm –2 . Moreover, the modified Zn anode assures the MnO 2 -based full cells with superior rate and cycling performance.