Zn2V2O6 nanowire, preparation method thereof and zinc ion battery positive electrode containing Zn2V2O6 nanowire

Abstract

The invention provides a preparation method of Zn2V2O6 nanowires, which comprises the following steps: weighing vanadium pentoxide, slowly adding the vanadium pentoxide into a hydrogen peroxide solution, and conducting uniform mixing to obtain a first mixed solution; weighing polyethylene glycol, adding the polyethylene glycol into the first mixed solution, and conducting stirring to obtain a second mixed solution; adding deionized water into the second mixed solution, conducting stirring to obtain a third mixed solution, heating the third mixed solution to carry out hydrothermal reaction, andconducting cooling to room temperature after the reaction is finished to obtain a first solid product; carrying out centrifugal separation and drying on the first solid product to obtain H2V3O8 nanowires; weighing H2V3O8 nanowires and basic zinc carbonate, adding the H2V3O8 nanowires and the basic zinc carbonate into deionized water, and conducting heating to obtain a fourth mixed solution; weighing hexadecyltrimethylammonium bromide, adding the hexadecyltrimethylammonium bromide into the fourth mixed solution, and conducting stirring and heating to obtain a second solid product; and washing,drying and sintering the second solid product to obtain the Zn2V2O6 nanowire.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemistry, in particular to a Zn 2 V 2 o 6 Nanowire, its preparation method and zinc ion battery positive electrode containing it. Background technique [0002] With the development of economy and society, energy issues have become an important issue that human development needs to face. Compared with traditional coal power generation, new energy sources such as solar energy, wind energy, nuclear energy and other renewable energy have the advantages of zero pollution, green and environmental protection, and have gradually become the focus of scientific research. Lithium-ion battery electrode materials, as the earliest electrode materials to be studied in energy materials, have the advantages of high theoretical specific capacity, low electrochemical potential, and high energy density. However, the shortage of lithium reserves in the world and the high cost of lithium have limit...

AI Technical Summary

Problems solved by technology

[0003] Traditional zinc-ion batteries often have problems such as short cycle life, severe self-discharge, and zinc dendrites. Therefore, it is necessary to develop an electrode material for zinc-ion batteries with high safety performance and environmental protection.

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