A key advancement in emerging sodium-ion batteries is the integration of gel polymer electrolytes, which offer improved performance, scalability, and safety. Here, the authors synthesize sodium-ion–conducting gel polymer electrolytes with phosphate linkers, achieving high electrochemical stability and cycle retention, as well as improved safety by significantly reducing flammability and preventing thermal runaway.
- Spencer A. Langevin
- Courtney McHale
- Jesse S. Ko