A Seamless Metal-Organic Framework Interphase with Boosted Zn<sup>2+</sup> Flux and Deposition Kinetics for Long-Living Rechargeable Zn Batteries.
basic_science · Level V
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- Record sourced from PubMed, PMID 36794942.
- Also identified by DOI 10.1021/acs.nanolett.2c04410.
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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 <i>on-site</i> 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<sup>-2</sup> with a high cumulative plated capacity of 5.5 Ah cm<sup>-2</sup>. Moreover, the modified Zn anode assures the MnO<sub>2</sub>-based full cells with superior rate and cycling performance.