Breakthrough in Molecular Engineering for High-Temperature Capacitive Energy Storage

Strategic Insights -

Researchers at Jiangxi Science & Technology Normal University have made a groundbreaking discovery in molecular engineering, developing a novel approach to designing polymer dielectrics that exhibit exceptional thermal stability and capacitive performance. By integrating structural modularity and topological control, the team has created a framework for next-generation energy storage applications under extreme conditions. The research has been peer-reviewed and published in the journal Advanced Materials.

Key Takeaways:

  • The researchers designed a modular molecular engineering approach to optimize molecular polarity, topological crosslinking, and free volume in alicyclic polymers.
  • The polymers exhibit a wide optical bandgap (E 3.7 eV), high thermal stability (T 350 °C), and suppressed dissipation (D 0.0006).
  • The optimized P50-B250 polymer delivers an exceptional discharged energy density (U) of 8.00 J cm at 150 °C ( 90% efficiency), while fully crosslinked P0-B300 retained U of 7.34 J cm at 200 °C and 4.65 J cm at 250 °C.
  • Molecular dynamics (MD) simulations revealed that crosslinking increases free volume fraction by 40%, inhibiting interchain charge transfer complexes (CTCs).
  • Density functional theory (DFT) calculations confirm that sulfonyl-enhanced polarization and crosslinking collectively restrict charge migration.
  • The research team consisted of Quan Sun, Yan He, Rui Xue, Qi Wang, Aijiao Guan, Pingxia Zhang, Jingcheng Xu, Zhaoyu Ran, Qi Li, and Wenxin Fu from Jiangxi Science & Technology Normal University.

Statistics:

  • 40% increase in free volume fraction due to crosslinking
  • 8.00 J cm discharged energy density at 150 °C with 90% efficiency
  • 7.34 J cm discharged energy density at 200 °C
  • 4.65 J cm discharged energy density at 250 °C
  • 3.7 eV optical bandgap
  • 350 °C thermal stability

Sources:

  • Synergistic Molecular Engineering of Crosslinked Polymer Dielectrics for High-Temperature Capacitive Energy Storage. Advanced Materials, 2025.
  • NewsRx. Findings on Molecular Engineering Detailed by Researchers at Jiangxi Science & Technology Normal University (Synergistic Molecular Engineering of Crosslinked Polymer Dielectrics for High-Temperature Capacitive Energy Storage). Journal of Engineering. October 20, 2025; p 1014.
  • Wiley-Blackwell. www.wiley.com/; Advanced Materials. onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4095