Synergistic Design of Flexible Nanopapers for High-Performance Proton Pseudocapacitors.

ABSTRACT: Two-dimensional materials for flexible energy storage commonly face huge challenges in limited active surface and hindered charge transport. Herein, we report an innovative asymmetric pseudocapacitor based on synergistic design of modified MXene and graphene, integrating gas-induced rapid expansion technology and precise surface chemical regulation methods. For graphene modification, rapid vaporization induces exfoliation and expansion of graphene oxide layers. Subsequently, pseudocapacitive oxygen-containing groups were selectively introduced through acid oxidation, yielding expanded-and-oxidized graphene (OEG) for positive porous-nanopaper electrode. For MXene modification, alkali-treated MXene underwent hydrazine assistance to facilitate gas expansion and -NH₂ grafting, produ

SUBMITTER: Dong J 

PROVIDER: S-EPMC12765798 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature