Na_0.4MnO₂/MXene nanocomposites as cathodes for high-performance aqueous zinc-ion batteries.

ABSTRACT: The distinctive configuration of MnO₂ renders it an exceptionally promising candidate for cathode materials for aqueous zinc-ion batteries (ZIBs). However, its practical utilization is constrained by the sluggish diffusion kinetics of Zn²⁺ and the capacity degradation resulting from lattice distortions occurring during charge and discharge cycles. To address these challenges, Na_0.4MnO₂@MXene with a typical 2 × 4 tunnel structure has been successfully synthesized by a simple hydrothermal method in the presence of 5 M NaCl. The nanorods are about 56 nm in diameter. The zinc-ion batteries (ZIBs) with Na_0.4MnO₂@MXene displays a specific capacity of 324.6 mA h g^-1 at 0.2 A g^-1, and have a high reversible cap

SUBMITTER: Si G 

PROVIDER: S-EPMC11228759 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature