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Batteries

Breakthrough in Aqueous Ammonium-Ion Battery Technology

Strategic Insights

— 2 min read

Researchers at the Jiangsu University of Science and Technology have made a significant breakthrough in the development of aqueous ammonium-ion batteries, a promising alternative to traditional lithium-ion batteries. By employing a novel strategy using tannic acid, the team was able to enhance the structural stability and active site availability of Mn-PBA cathodes, resulting in high-performance aqueous batteries. The study, published in Materials Horizons, has significant implications for the development of advanced cathodes in aqueous batteries.

Key Takeaways:

  • The research team developed a novel strategy using tannic acid to enhance the structural stability and active site availability of Mn-PBA cathodes.
  • The Mn-PBA-TA cathode exhibited a reversible specific capacity of 120.3 mAh g after 200 cycles at 1 A g and retained exceptional cycling stability over 10,000 cycles at a current density of 15 A g.
  • The ultra-low capacity fade of 0.0036% per cycle demonstrated the high active site availability and exceptional cycling stability of the Mn-PBA-TA cathode.
  • A comprehensive investigation into the NH electrochemical diffusion behavior, redox capability, and structural stability of Mn-PBA-TA was conducted, complemented by theoretical calculations that elucidated a rational NH migration pathway and its associated energy barriers.
  • The study provides valuable insights into the chemical modification of PBAs, paving the way for the development of advanced cathodes in aqueous batteries.
  • The research was supported by the Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, China Postdoctoral Science Foundation, National Institute of Education, Nanyang Technological University, and Ministry of Education - Singapore.

Statistics:

  • The Mn-PBA-TA cathode exhibited a reversible specific capacity of 120.3 mAh g.
  • The cathode retained cycle stability over 10,000 cycles at a current density of 15 A g.
  • The ultra-low capacity fade was 0.0036% per cycle.
  • The study was published in Materials Horizons in 2025.

Sources:

  • "Tailoring surface structures in Mn-based Prussian blue analogues for enhanced NH4+ transport and high-performance aqueous batteries." Materials Horizons, 2025;12(20):8565-8576.
  • Royal Soc Chemistry, Thomas Graham House, Science Park, Milton Rd, Cambridge CB4 0WF, Cambs, England.
  • Hao Fu, School of Materials Science and Engineering, Jiangsu University of Science and Technology, Jiangsu 212003, People's Republic of China.
  • NewsRx LLC. Copyright 2025, NewsRx LLC. The citation for this news report is: NewsRx. New Materials Science Study Results Reported from Jiangsu University of Science and Technology (Tailoring surface structures in Mn-based Prussian blue analogues for enhanced NH4+ transport and high-performance aqueous batteries). Chemicals & Chemistry. October 31, 2025; p 2241.

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