Covalent Organic Framework Nanofilm Heterojunctions: Lamination Effect and Suppressed Self-Discharge in Flexible Micro-Supercapacitors Energy Storage.

ABSTRACT: Covalent organic frameworks (COFs) nanofilms with well-ordered channels and highly active interfaces have great potential in in-plane micro-supercapacitors (MSCs). COF heterojunction nanofilms integrate the benefits of individual COF phases through alternating stacking. Herein, sandwich-type COF heterojunctions are prepared under van der Waals bonding, controlling the larger outer aperture (vs. inner) to create the stereoscopic lamination effect in axial channel structure, which enhances the rapid transport of electrolyte H⁺ and their concentrated accumulation on active interfaces. Simultaneously, the unique heterojunction structure effectively reduces resistance to electron transport, enabling electrons to conduct through in-plane π-electron clouds and facilitating π-π electron transition

SUBMITTER: Xu X 

PROVIDER: S-EPMC12934377 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature