Molecular Engineering Design for High-Performance Aqueous Zinc-Organic Battery.

ABSTRACT: Novel small sulfur heterocyclic quinones (6a,16a-dihydrobenzo[b]naphtho[2',3':5,6][1,4]dithiino[2,3-i]thianthrene-5,7,9,14,16,18-hexaone (4S6Q) and benzo[b]naphtho[2',3':5,6][1,4]dithiino[2,3-i]thianthrene-5,9,14,18-tetraone (4S4Q)) are developed by molecule structural design method and as cathode for aqueous zinc-organic batteries. The conjugated thioether (-S-) bonds as connected units not only improve the conductivity of compounds but also inhibit their dissolution by both extended π-conjugated plane and constructed flexible molecular skeleton. Hence, the Zn//4S6Q and Zn//4S4Q batteries exhibit satisfactory electrochemical performance based on 3.5 mol L^-1 (M) Zn(ClO₄)₂ electrolyte. For instance, the Zn//4S6Q battery obtains 240 and 208.6 mAh g^-1

SUBMITTER: Sun T 

PROVIDER: S-EPMC9839927 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature