Low-cost additive helps sodium battery survive 2,000 hours without failure

NUS researchers added graphitic carbon nitride to a polymer electrolyte for solid-state sodium batteries.

The additive improved ion transport, strengthened the electrolyte, and helped suppress dendrite growth.

Battery cells ran for more than 2,000 hours and still retained most capacity after 500 cycles.

The advance tackles safety, conductivity, and scalability barriers in sodium-based energy storage.