Sulfur confinement via C–S bonding for stable sulfur conversion in aqueous Zn–S batteries

Aqueous Zn-S batteries face challenges in sulfur conversion reversibility and cathode stability. Here, we introduce a chemical confinement strategy using an alkene-containing Th-BE monomer to stabilize the sulfur cathode. Sulfur is chemically confined within the Th-BE framework through robust C-S bonds, enabling improved reaction reversibility and cycling stability.