Small, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Ionic rectifier that mimics the directional ion transport in biological channels has been shown with potential toward boosting osmotic energy conversion performance. However, achieved power by existing rectifying devices is still limited, because they are constructed based on tiny nanoscale channels, which experience high resistance. Here, a novel high‐performance ionic (abbreviated as MXene@MC) steep channel gradient from angstrom‐scale to mesoscale reported capping an ultrathin 2D Ti 3 C 2 T x MXene laminate asymmetric conical mesochannel (MC). The device can strongly rectify current (with ratio of 7.3‐fold) even 0.5 m electrolyte solution, and thus single achieve ultra‐large conductance 0.596 µS. These features enable MXene@MC ultrahigh performance generator, achieving unprecedented 343 pW under 1000‐fold salinity at neutral pH. Notably, simulations also provided demonstrate findings proposed efficient conversion. This study unravels underlying physics induced apparent structural asymmetry ion‐selective thereby providing promising platform for further development generators.

Язык: Английский