A Mineral‐Biopolymer Synergistic Quasi‐Solid‐State Electrolyte for Long‐Lasting Zinc Metal Batteries

ABSTRACT Combining the high ionic conductivity of inorganic filler with the robust strength of organic matrix is a valid strategy to boost the ion transport and interface stability of composite solid electrolyte, which effectively inhibits dendrite growth of zinc anode and active material dissolution of cathode for zinc metal batteries (ZMBs). Herein, DLM@SA@Zn quasi‐solid‐state electrolytes (QSSEs) are constructed by sodium alginate (SA) and dolomite (DLM) through self‐assembly film technology, and delivers wide operating voltage window (3.08 V), high ionic conductivity (2.22 mS cm −1 ), and high Zn 2+ transference number (0.84). For the Zn//AC@I 2 cells in DLM@SA@Zn electrolyte, a high‐capacity retention…

• NN
  National Natural Science Foundation of China

  Awards: 52561041, 22562010, 22202053, 52461040, 52404316
• KR
  Key Research and Development Project of Hainan Province

  Award: ZDYF2025GXJS004