Preparation method of MXene-based zinc ion all-solid-state battery electrode material and MXene-based zinc ion all-solid-state battery device

Abstract

The invention discloses a method for preparing a MXene-based zinc ion all-solid-state battery electrode material and a MXene-based zinc ion all-solid-state battery device. A precursor D-Ti3AlC2 containing hexagonal vacancy defects is vacuum sintered, and then D-Ti3C2 with hexagonal holes is etched with a fluorine-containing acidic solution. Finally, KMnO4 is used as a manganese source to in-situ synthesize a nano-flower ball-coated MnO2@D-Ti3C2 structure on a D-Ti3C2 matrix. The layered structure D-Ti3C2 containing hexagonal holes can further improve the capture of zinc ions, while the MnO2@D-Ti3C2 composite material adsorbs zinc ions through the redox activity of the Mn element, and under the action of the D-Ti3C2 matrix, the defect of poor rate performance of zinc ion batteries caused by poor conductivity of MnO2 is improved. By electroplating a Zn layer on the D-Ti3C2 sheet and using it as the negative electrode material of a zinc-ion battery, more active sites can be provided for the deposition of zinc ions, thereby avoiding the impact of zinc dendrites on zinc-ion batteries.

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