Abstract

In this paper, two dimensional nanosheet (2D) crystal, formulated as Zn3(OH)2V2O7•2H2O has been synthesized by a facile hydrothermal method. Its crystal facet, morphology and structural evolutions of the resulting material are characterized with considerable temporal resolution. Applied for anode of lithium-half batteries, the powder that is thermally treated for approximately exhibits a rather high capacity, long-term cycling stability, and good rate capability due to intrinsically great surface area, the trimmed diffusion distance and probably synergetic effects of Zn and V ions. Furthermore, the in-situ electrochemical impedance spectra of ZVO-10 during the initial discharge–charge cycle are simulated based on the equivalent electrical circuit and the non-linear least square regression method. The results support the fact that the kinetics property changes, significantly, when discharged to 0.5 V, and then keeps stability in the charge.

Keywords: Li-ion batteries; Zn3(OH)2V2O7•2H2O; Nanosheets; Electrochemical kinetic

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Liu, Q.; Liu, H. Beilstein Arch. 2019, 201913. doi:10.3762/bxiv.2019.13.v1

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