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Batteries

Breakthrough in Zinc-Ion Battery Technology: Stable and Affordable Next-Generation Batteries

Strategic Insights

— 2 min read

A team of researchers has made a significant advancement in zinc-ion battery technology by developing a new ultra-thin protective coating that prevents dendrite growth and stabilizes the anode, making zinc-ion batteries safer and more practical as a alternative to lithium-ion batteries. This innovative coating, known as zinc-bonded polyacrylic acid (ZHP), has been shown to significantly improve the cycling performance and stability of zinc-ion batteries, making them ideal for applications such as grid-scale energy-storage systems and portable electronics. The researchers, led by Associate Professor Woo-Jin Song from Chungnam National University in South Korea, have demonstrated that their new coating is both effective and easy to produce, paving the way for the widespread adoption of zinc-ion batteries.

Key Takeaways:

  • The researchers developed a new ultra-thin selective-ion transport layer (SITL) that prevents dendrite growth and stabilizes the anode, making zinc-ion batteries more stable and practical.
  • The SITL is based on polyacrylic acid (PAA), which can prevent direct contact between the zinc anode and water-based electrolyte, inhibiting corrosion and reducing dendritic growth.
  • The researchers applied oxygen plasma treatment to zinc-anode to enhance adhesion between PAA the layer and the anode surface.
  • The PAA-coated anode was then heated on a hot plate, forming the zinc-bonded PAA (ZHP) layer.
  • The ZHP coated zinc anode demonstrated remarkable performance, retaining 95% of its capacity after 500 cycles in full cells and stable cycling for over 300 cycles in pouch cells.
  • The enhanced stability of water-based electrolytes makes ZHP based ZIBs ideal for safety-critical industries such as grid-scale energy-storage systems and detection sensors.
  • The low cost and toxicity of ZHP based ZIBs make them well-suited for portable electronics and wearables.

Statistics:

  • 95% capacity retention after 500 cycles in full cells
  • Stable cycling for over 300 cycles in pouch cells
  • 10 times improvement in cycling performance compared to traditional zinc-ion batteries
  • 5 times reduction in dendrite growth compared to traditional zinc-ion batteries
  • Scalable and cost-effective fabrication process
  • Ideal for safety-critical industries such as grid-scale energy-storage systems and detection sensors
  • Low cost and toxicity make them well-suited for portable electronics and wearables

Sources:

  • "Development of artificial zincophilic polymeric nanolayers on zinc anodes for high-performance zinc batteries" Journal: Chemical Engineering Journal DOI: 10.1016/j.cej.2025.162948
  • Associate Professor Woo-Jin Song, Chungnam National University
  • Chungnam National University (CNU)
  • Department of Organic Materials Engineering, Chungnam National University

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