In situ construction of zinc-rich polymeric solid–electrolyte interface for high-performance zinc anode

• DOI: 10.1016/j.esci.2023.100153
• Publication Date: 2023-06-01T08:33:00Z
• Authors: Kaixuan Xie; Kaixin Ren; Qinghong Wang; Yuxiao Lin; Fengcan Ma; Chuang Sun; Yinwei Li; Xinsheng Zhao; Chao Lai
• Keywords: Passivation; Polyacrylic acid; Galvanic anode

With their excellent reliability and environmental friendliness, zinc-ion batteries (ZIBs) are regarded as potential energy storage technologies. Unfortunately, poor cycling durability low Coulombic effectiveness (CE), driven by dendritic growth surface passivation on the Zn anode, severely restrict commercialization. Herein, we describe in situ construction of a Zn-rich polymeric solid–electrolyte interface (SEI) using polyacrylic acid (PAA) an electrolyte additive. On one hand, PAA SEI layer offers evenly distributed nucleation sites promotes ion transport, hence suppressing dendrite growth. other prevents direct contact between foil electrolyte, thus inhibiting side reactions. Additionally, robust coordination with Zn2+ layer’s good adherence to provide long-term protection anode. As result, symmetric cells Zn/V2O5 all deliver prolonged life cycles superior electrochemical efficiency.