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<p>Quasi-solid polymer electrolytes (QSPEs) have garnered extensive research attention due to their abilities to effectively mitigate critical challenges, including hydrogen evolution, electrode passivation and zinc dendrite growth in aqueous zinc-ion batteries (AZIBs). Nevertheless, QSPEs still face numerous issues, typically as low ionic conductivity. Herein, a three-dimensional porous P(VDF-TrFE) quasi-solid electrolyte was synthesized via a molecular-bridging-induced crosslinking reaction, with water content adjusted by ultrasonic atomization to optimize the ionic transport kinetics. Based on the highly effective Zn<sup>2+</sup> transmission path provided by 3D porous structure and the regulation of solvated Zn<sup>2+</sup> by crosslinking sites of C–O–C groups, a typical sample CPZ-25 exhibits exceptional ionic conductivity (8.8 mS cm<sup>−1</sup>), high transference number (0.70) and low interfacial resistance, thereby promoting uniform Zn deposition. Consequently, the Zn anode has greatly extended the service life, and the full cells using MnO<sub>2</sub> realize 1200 cycles at 1 A g<sup>−1</sup>. This study provides novel perspectives for the design of high-performance QSPE-based zinc-ion batteries.</p>

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3D porous polymer framework induced by molecular bridging reaction enables quasi-solid zinc-ion batteries

  • 期刊论文

  • 发表日期：

    2026年3月26日

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  • Yi Zhang,
  • Tengxuan Zhang,
  • Shanghuai Gao,
  • Le Chang,
  • Benle Zhang,
  • Danyang Zhao,
  • Qiancheng Zhu

摘要

Quasi-solid polymer electrolytes (QSPEs) have garnered extensive research attention due to their abilities to effectively mitigate critical challenges, including hydrogen evolution, electrode passivation and zinc dendrite growth in aqueous zinc-ion batteries (AZIBs). Nevertheless, QSPEs still face numerous issues, typically as low ionic conductivity. Herein, a three-dimensional porous P(VDF-TrFE) quasi-solid electrolyte was synthesized via a molecular-bridging-induced crosslinking reaction, with water content adjusted by ultrasonic atomization to optimize the ionic transport kinetics. Based on the highly effective Zn2+ transmission path provided by 3D porous structure and the regulation of solvated Zn2+ by crosslinking sites of C–O–C groups, a typical sample CPZ-25 exhibits exceptional ionic conductivity (8.8 mS cm−1), high transference number (0.70) and low interfacial resistance, thereby promoting uniform Zn deposition. Consequently, the Zn anode has greatly extended the service life, and the full cells using MnO2 realize 1200 cycles at 1 A g−1. This study provides novel perspectives for the design of high-performance QSPE-based zinc-ion batteries.