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Batteries

Breakthrough in Energy Storage: Researchers Develop High-Capacity Solid-State Batteries

Strategic Insights

— 1 min read

Researchers from Northeastern University in Shenyang, People's Republic of China, have made a significant breakthrough in the development of high-capacity solid-state batteries. By designing a composite electrolyte with two inorganic fillers, the team was able to enhance the ionic conductivity, rate performance, and cycling stability of all-solid-state lithium-sulfur batteries. The new battery has shown promising results, including a high discharge capacity of 1126.4 mAh g-1 and a stable cycling performance of 1000 cycles at 2C.

Key Takeaways:

  • Researchers from Northeastern University designed a composite electrolyte with two inorganic fillers to enhance the ionic conductivity and rate performance of all-solid-state lithium-sulfur batteries.
  • The new battery has a high discharge capacity of 1126.4 mAh g-1 and a stable cycling performance of 1000 cycles at 2C.
  • The electrolyte with 10 wt% inorganic fillers has the highest ionic conductivity and lithium-ion transmission number among all the tested samples.
  • The symmetric cell showed the lowest overpotential and negligible impedance at different temperatures.
  • The new battery has the optimal coulombic efficiency among all-solid-state lithium-sulfur batteries, with a rate performance of 931.7 mAh g-1 and 764.6 mAh g-1 at 0.3C and 0.5C, respectively.
  • The research was funded by the National Natural Science Foundation of China, Shijiazhuang Basic Research Project, Natural Science Foundation of Hebei Province, Fundamental Research Funds for the Central Universities, and Performance subsidy fund for Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province.
  • The study was published in the Journal of Energy Storage, volume 131, 2025.

Statistics:

  • 1126.4 mAh g-1: High discharge capacity of the new battery.
  • 1000 cycles: Stable cycling performance of the new battery at 2C.
  • 10 wt%: Optimal concentration of inorganic fillers for the highest ionic conductivity and lithium-ion transmission number.
  • 931.7 mAh g-1: Rate performance of the new battery at 0.3C.
  • 764.6 mAh g-1: Rate performance of the new battery at 0.5C.

Sources:

  • Dual Inorganic Fillers Synergy for Enhancing Carrier Transport Performance In All-solid-state Lithium-sulfur Battery. Journal of Energy Storage, 2025;131.
  • NewsRx. Studies from Northeastern University Yield New Information about Energy Storage (Dual Inorganic Fillers Synergy for Enhancing Carrier Transport Performance In All-solid-state Lithium-sulfur Battery). Energy Weekly News. September 26, 2025; p 628.

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