Method for preparing diantimony trioxide lithium battery anode material with hollow prism structure

Abstract

The invention discloses a hydro-thermal synthesis method for a diantimony trioxide material with a hollow prism structure with a unique microscopic structure, which mainly comprises the following steps of slowly releasing hydroxyl ions by using urea as a source of the hydroxyl ions to ensure that diantimony trioxide slowly reacts in a mild alkaline environment to form the diantimony trioxide material with the unique hollow prism consisting of laminated structures through nucleation, slow crystallization and self-assembling oriented growth. The diantimony trioxide with the hollow prism structure taken as an anode material of a lithium ion battery has excellent lithium storage performance.

Description

technical field [0001] The invention relates to a hydrothermal synthesis method of orthorhombic antimony trioxide. The shape of the antimony trioxide is a micron-sized hollow prism, which belongs to the application of nanometer materials with new structure and lithium ion battery negative electrode materials prepared by hydrothermal method. technology field. Background technique [0002] Due to the advantages of high energy density, high working voltage, long cycle life, no memory, and environmental protection, lithium-ion batteries are widely used in mobile power sources for different mobile electronic devices in today's electronic information age. Now widely used commercially is graphitized carbon material anode material, which has excellent performance in multiple charge and discharge cycles, but its lithium storage capacity is usually limited to be lower than the theoretical gravimetric capacity of graphite: 372mAh / g. Antimony trioxide is an important semiconductor mate...

AI Technical Summary

Problems solved by technology

Graphitized carbon materials are now widely used commercially as anode materials, which have excellent performance in multiple charge-discharge cycles, but their lithium storage capacity is usually limited to be lower than the theoretical gravimetric capacity of graphite: 372mAh / g

Antimony trioxide is an important semiconductor material with orthorhombic and cubic crystal structures. It has broad application prospects in the fields of lithium-ion battery materials, flame retardants, catalysts, and gas-sensitive materials. So far, Conventional one-dimensional nanomaterials including antimony trioxide nanowires, nanorods, nanobelts, nanotubes, etc. have been successfully prepared, and there are some reports in their application fields, but relatively few

However, since the various physical and chemical properties of antimony trioxide materials are closely related to their own structural morphology, how to control the conditions to synthesize some special nanostructures remains to be studied. At present, there is no three-dimensional hollow prism structure prepared by people at home and abroad. Report on Antimony Oxide Material

Images