A long-lifespan, flexible zinc-ion secondary battery using a paper-like cathode from single-atomic layer MnO₂ nanosheets.

ABSTRACT: Aqueous zinc ion secondary batteries (ZIBs) have recently attracted considerable attention and global interest due to their low cost, aqueous-based nature and great safety. Unfortunately, the intrinsic properties of poor cycle life, low energy density and uncontrolled dendrite growth during the charge/discharge process for metallic Zn anodes significantly hinder their practical application. In this work, we rationally designed two-dimensional (2D) δ-MnO₂ nanofluidic channels by the ordered restacking of exfoliated MnO₂ single atomic layers, which exhibited a high zinc ion transport coefficient (1.93 × 10^-14 cm² s^-1) owing to their appropriate d-spacing and the negative charge of the inner channel walls. More importantly, we foun

SUBMITTER: Wang Y 

PROVIDER: S-EPMC9419507 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature