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Batteries

Breakthrough in Zinc-Ion Battery Technology: Scientists Develop Innovative Hydrogel Electrolyte

Strategic Insights

— 1 min read

Research conducted by scientists from Nanjing Forestry University has led to a significant breakthrough in zinc-ion battery technology. The team developed an anisotropic hydrogel electrolyte that incorporates phosphate anions, capable of spontaneously reacting with zinc metal to form an inorganic protective layer. This innovative design addresses the instability of zinc metal anodes, a major hurdle in the widespread adoption of zinc-ion batteries for large-scale energy storage.

Key Takeaways:

  • The anisotropic hydrogel electrolyte enables rapid ionic transport while reducing dendrite formation, promoting zinc ion transport, desolvation, and nucleation processes.
  • The in-situ formed interfacial layer has large ionic conductivity, excellent zincophilicity, and exceptional chemical stability, effectively shielding the Zn electrode from direct exposure to water molecules.
  • The Zn//Zn cell demonstrates a long lifespan of over 1500 hours under 2 mA cm and 2 mAh cm, and the Zn//MnO battery achieves a large capacity retention of 84.8% after 1000 cycles.
  • This research establishes a promising strategy for the design of hydrogel electrolytes and the interface engineering of zinc-based batteries.
  • The anisotropic structure of the hydrogel electrolyte facilitates ionic transport and reduces the likelihood of dendrite formation.
  • The in-situ formed interfacial layer effectively inhibits Zn dendrites and parasitic reactions.

Statistics:

  • The Zn//Zn cell demonstrates a lifespan of over 1500 hours under 2 mA cm and 2 mAh cm.
  • The Zn//MnO battery achieves a large capacity retention of 84.8% after 1000 cycles.
  • The anisotropic hydrogel electrolyte enables rapid ionic transport while reducing dendrite formation.

Sources:

  • Anisotropic hydrogel electrolyte with in-situ formed inorganic ionic conductive interface toward highly stable zinc metal electrodes. Journal of Colloid and Interface Science, 2025;700:138584.
  • NewsRx. New Science Findings from Nanjing Forestry University Reported (Anisotropic hydrogel electrolyte with in-situ formed inorganic ionic conductive interface toward highly stable zinc metal electrodes). Chemicals & Chemistry. August 22, 2025; p 2089.

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