Preparation method of nanowire-like Cu3V2O8-V2O5 composite powder

Abstract

The invention provides a preparation method of nanowire-like Cu3V2O8-V2O5 composite powder. The preparation method comprises the following steps: dispersing Cu3V2O8 into an AgNO3 solution to obtain adispersion liquid; introducing nitrogen into the dispersion liquid for continuous bubbling; pouring the dispersion liquid into a quartz tube, performing a stirring reaction continuously under illumination, and then performing separation, washing and drying to obtain the nanowire-like Cu3V2O8-V2O5 composite powder. The preparation method has the following advantages: firstly, the nanowire-like Cu3V2O8-V2O5 composite powder can be prepared at room temperature with an illumination-liquid stirring method, the preparation method is simple, and a high-temperature and high-pressure environment is notneeded; secondly, in-situ topological transformation is taken as an idea, a surfactant and an organic solvent are not needed, and direct transformation of phase and morphology of the product are realized. The preparation period is short, the process is simple, the repeatability and the feasibility are high, and the method is quite economical, practical and suitable for mass production and preparation. First specific discharge capacity is as high as 1051.7 mAh / g, and the composite powder has excellent lithium storage performance.

Description

technical field [0001] The invention belongs to the technical field of nano-semiconductor composite materials, in particular to a nanowire-like Cu 3 V 2 o 8 -V 2 o 5 Preparation method of composite powder. Background technique [0002] Copper vanadate (Cu x V y o z ) is a layered structure that can undergo multi-step reduction during intercalation / deintercalation of lithium ions (Cu 2+ / Cu + and Cu + / Cu 0 ) semiconductor materials have potential application value in many fields of functional materials such as catalytic materials, energy storage materials and magnetic materials. [0003] At present, the synthesis of nanomaterials with special morphology generally requires the use of hydrothermal or solvothermal methods, and the addition of surfactants to achieve the regulation of product morphology through different morphologies of micelles. However, the hydrothermal method and the solvothermal method require special equipment to provide the high temperature and ...

AI Technical Summary

Problems solved by technology

However, the hydrothermal method and the solvothermal method require special equipment to provide the high temperature and high pressure environment required for the synthesis, and the solvothermal method requires a large amount of organic solvent as the reaction medium, which makes the preparation cost of the hydrothermal or solvothermal method relatively high, and the reaction process It is more dangerous and does not meet the requirements of green environmental protection

Images