Sodium Ion Pre-Intercalation of δ-MnO₂ Nanosheets for High Energy Density Aqueous Zinc-Ion Batteries.

ABSTRACT: With the merits of low cost, environmental friendliness and rich resources, manganese dioxide is considered to be a promising cathode material for aqueous zinc-ion batteries (AZIBs). However, its low ion diffusion and structural instability greatly limit its practical application. Hence, we developed an ion pre-intercalation strategy based on a simple water bath method to grow in situ δ-MnO₂ nanosheets on flexible carbon cloth substrate (MnO₂), while pre-intercalated Na⁺ in the interlayer of δ-MnO₂ nanosheets (Na-MnO₂), which effectively enlarges the layer spacing and enhances the conductivity of Na-MnO₂. The prepared Na-MnO₂//Zn battery obtained a fairly high capacity of 251 mAh g^-1 at a current densit

SUBMITTER: Ding Y 

PROVIDER: S-EPMC10057495 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature