Tunable Layered (Na,Mn)V₈O₂₀·nH₂O Cathode Material for High-Performance Aqueous Zinc Ion Batteries.

ABSTRACT: Rechargeable aqueous zinc-ion batteries (ZIBs) show promise for use in energy storage. However, the development of ZIBs has been plagued by the limited cathode candidates, which usually show low capacity or poor cycling performance. Here, a reversible Zn//(Na,Mn)V₈O₂₀·nH₂O system is reported, the introduction of manganese (Mn) ions in NaV₈O₂₀ to form (Na,Mn)V₈O₂₀ exhibits an outstanding electrochemical performance with a capacity of 377 mA h g^-1 at a current density of 0.1 A g^-1. Through experimental and theoretical results, it is discovered that the outstanding performance of (Na,Mn)V₈O₂₀·nH₂O is ascribed to the Mn²⁺/Mn³⁺-i

SUBMITTER: Du M 

PROVIDER: S-EPMC7341090 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature