Interlayer Modification of Pseudocapacitive Vanadium Oxide and Zn(H₂ O)_n ²⁺ Migration Regulation for Ultrahigh Rate and Durable Aqueous Zinc-Ion Batteries.

ABSTRACT: The interlayer modification and the intercalation pseudocapacitance have been combined in vanadium oxide electrode for aqueous zinc-ion batteries. Intercalation pseudocapacitive hydrated vanadium oxide Mn_1.4 V₁₀ O₂₄ ·12H₂ O with defective crystal structure, interlayer water, and large interlayer distance has been prepared by a spontaneous chemical synthesis method. The inserted Mn²⁺ forms coordination bonds with the oxygen of the host material and strengthens the interaction between the layers, preventing damage to the structure. Combined with the experimental data and DFT calculation, it is found that Mn²⁺ refines the structure stability, adjusts the electronic structure, and improves the conductivity of hydrated vanadium o

SUBMITTER: Chen H 

PROVIDER: S-EPMC8292880 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature