Artificial Solid-Electrolyte Interface Facilitating Dendrite-Free Zinc Metal Anodes via Nanowetting Effect

• DOI: 10.1021/acsami.9b11243
• Publication Date: 2019-08-13T14:37:45Z
• Authors: Mingqiang Liu; Luyi Yang; Hao Liu; Anna Amine; Qinghe Zhao; Yongli Song; Jinlong Yang; Ke Wang; Feng Pan
• Keywords: Dendrite (mathematics); Interface (matter)

The formation of dendrites on a zinc (Zn) metal anode has limited its practical applications aqueous batteries. Herein, an artificial composite protective layer consisting nanosized metal-organic frameworks (MOFs) to improve the poor wetting effect electrolytes Zn is proposed reconstruct Zn/electrolyte interface. In this layer, hydrophilic MOF nanoparticles serve as interconnecting electrolyte reservoirs enabling nanolevel well regulating flux anode. This zincophilic interface exhibits significantly reduced charge-transfer resistance. As result, stable and dendrite-free plating/stripping cycling performance achieved for over 500 cycles. addition, especially at higher C-rates, coating reduces overpotentials in Zn/MnO2 battery during cycling. principle method work demonstrate effective way anodes (e.g., Zn) where conventional solid-electrolyte (SEI) cannot be formed.