High-performance Na-S batteries enabled by a chemical and spatial dual-confinement strategy

Sodium-sulfur (Na-S) batteries are promising for next-generation energy storage. Novel host materials with spatial and chemical dual-confinement functions for anchoring S are fabricated, which are incorporated in S cathodes. The Na-S batteries achieved a capacity retention of up to 97.64% after 1,000 cycles. Sodium-sulfur (Na-S) batteries are promising for next-generation energy storage. Novel host materials with spatial and chemical dual-confinement functions for anchoring S are fabricated, which are incorporated in S cathodes. The Na-S batteries achieved a capacity retention of up to 97.64% after 1,000 cycles.