In situ construction of zinc-rich polymeric solid–electrolyte interface for high-performance zinc anode
Kaixuan Xie,
Kaixin Ren,
Qinghong Wang,
Yuxiao Lin,
Fengcan Ma,
Chuang Sun,
Yinwei Li,
Xinsheng Zhao,
Chao Lai
Affiliations
Kaixuan Xie
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Kaixin Ren
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Qinghong Wang
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China; Corresponding authors.
Yuxiao Lin
Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Fengcan Ma
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Chuang Sun
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Yinwei Li
Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Xinsheng Zhao
Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China
Chao Lai
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, PR China; Corresponding authors.
With their excellent reliability and environmental friendliness, zinc-ion batteries (ZIBs) are regarded as potential energy storage technologies. Unfortunately, their poor cycling durability and low Coulombic effectiveness (CE), driven by dendritic growth and surface passivation on the Zn anode, severely restrict their commercialization. Herein, we describe the in situ construction of a Zn-rich polymeric solid–electrolyte interface (SEI) using polyacrylic acid (PAA) as an electrolyte additive. On the one hand, the PAA SEI layer offers evenly distributed nucleation sites and promotes ion transport, hence suppressing dendrite growth. On the other hand, the SEI layer prevents direct contact between the Zn foil and the electrolyte, thus inhibiting side reactions. Additionally, the robust coordination of PAA with Zn2+ and the SEI layer's good adherence to the Zn foil provide long-term protection to the Zn anode. As a result, symmetric cells and Zn/V2O5 cells all deliver prolonged cycle life and superior electrochemical efficiency.
