Science News for September 20, 2025

Scalable and sustainable chitosan/carbon nanotubes composite protective layer for dendrite‑free and long‑cycling aqueous zinc‑metal batteries

Researchers have developed a scalable and sustainable composite protective layer using chitosan and carbon nanotubes to prevent deadly dendrites in zinc batteries. The new material enables up to 3,000 hours of stable cycling and pushes energy efficiency over 99%.

SourceShanghai Jiao Tong University Journal Center·JournalNano-Micro Letters·TypeExperimental study·DateSep 20, 2025

Comprehensive understanding of closed pores in hard carbon anode for high‑energy sodium‑ion batteries

Researchers have discovered that closed pores in hard carbon anodes can significantly increase the energy density and initial Coulombic efficiency of sodium-ion batteries. This breakthrough provides a new design paradigm for hard carbon anodes, enabling the creation of next-generation SIBs with higher energy, longer life, and lower cost.

SourceShanghai Jiao Tong University Journal Center·JournalNano-Micro Letters·TypeExperimental study·DateSep 20, 2025