Cation-π Hydrogel Electrolyte for Flexible All-Solid-State Supercapacitors with Excellent Mechanical Deformation and Low-Temperature Tolerance.

ABSTRACT: Flexible supercapacitors are promising power sources for new-generation wearable electronics. However, their electrochemical performance often deteriorates under mechanical deformation and low-temperature environments. Here, a flexible supercapacitor is developed by sandwiching a hydrogel electrolyte between two electrodes. To address performance challenges, cation-π crosslinking sites are incorporated into the hydrogel network. These dynamic crosslinking sites act as efficient ion-hopping centers, imparting the hydrogel electrolyte with high fracture strength (1.8 MPa), strong ionic conductivity (3.9 S m^-1), and excellent anti-freezing properties. Furthermore, the hydrogel forms cation-π interactions with carbon nanotube-based composite electrodes, facilitated by the reaction b

SUBMITTER: Wang C 

PROVIDER: S-EPMC12806218 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature