Hybridization-tuned dual-chain conjugated polythioether quinones for high-energy rechargeable magnesium batteries.

ABSTRACT: Organic conjugated polymers featuring abundant redox-active moieties and flexible framework architectures represent promising cathode materials for rechargeable Mg batteries, but reported organic cathodes have struggled to achieve both high reversible capacity and high energy density simultaneously. Herein, three conjugated carbonyl polymers (25PBQS, 26PBQS, and 2356PBQS) are rationally designed by varying the conjugated thioether connectivity patterns of high-capacity, high-voltage benzoquinone units. The benzoquinone units enable high energy density through efficient two-electron redox reactions. The partial sp³ hybridization of sulfur atoms enhances molecular conformational flexibility, facilitating coordination with Mg²⁺, while partial sp² hybridization

SUBMITTER: Gui H 

PROVIDER: S-EPMC12603802 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature