Breakthrough in Zinc-Ion Batteries: Scientists Develop Ultra-Long Lifespan Battery Using Eutectic Electrolytes

Strategic Insights -

Researchers at Chongqing University have made a significant discovery in the field of zinc-ion batteries, developing a new type of eutectic electrolyte (EE) that enables the creation of ultra-long lifespan batteries. According to a study published in the Journal of the American Chemical Society, the team has successfully created a zinc-ion battery that can last up to 2.07 years, achieving a highly reversible plating/stripping performance and a super high cumulative capacity of 42 Ah cm.

Key Takeaways:

  • The researchers have developed a new type of choline-chloride-based eutectic electrolyte that enables the creation of ultra-long lifespan zinc-ion batteries.
  • The eutectic electrolyte, which is composed of a quaternary ammonium salt and an inorganic anion, was prepared using a novel method that reshapes the hydrogen bond donor-acceptor identity.
  • The team has achieved an ultralong lifespan of 18175 h (2.07 years) of highly reversible Zn plating/stripping performance at a current density of 0.5 mA cm.
  • The assembled Zn || AC@I pouch cell shows stable rate and cycling electrochemical properties.
  • The research has shed new light on developing eutectic electrolytes for high-safety and practical zinc-ion batteries.
  • The study included a team of researchers from Chongqing University, led by Qiang Tang, and co-authors Xuemei Zhang, Hang Luo, Yanling Xu, Sicheng Miao, Shuyang Zhou, Changhaoyue Xu, Ye Jia, Qiujie He, Jianan Peng, Liang He, Yingze Song, Yun Zhang, and Wenlong Cai.

Statistics:

  • 18175 h ( 2.07 years): the lifespan of the newly developed zinc-ion battery.
  • 0.5 mA cm: the current density at which the battery achieved highly reversible plating/stripping performance.
  • 42 Ah cm: the super high cumulative capacity of the battery.
  • 20 mA cm: the current density at which the battery achieved a stable rate and cycling electrochemical properties.

Sources:

  • Hydrogen Bond Reconstruction Maneuver in Eutectic Electrolyte Enables Ultralong-Lifespan Zinc-Ion Batteries. Journal of the American Chemical Society, 2025.
  • Journal of the American Chemical Society, 1155 16TH St, NW, Washington, DC 20036, USA (americanchemicalsociety - www.acs.org).
  • NewsRx LLC, Copyright 2025 (NewsRx LLC - www.newsrx.com).
  • Chongqing University, College of Chemistry and Chemical Engineering, Chongqing 400044, People's Republic of China (Chongqing University - www.cqu.edu.cn).