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

A technology of antimony trioxide and negative electrode materials, which is applied in battery electrodes, chemical instruments and methods, structural parts, etc., and can solve problems such as lithium storage capacity limitations

Inactive Publication Date: 2009-09-02
SHANGHAI UNIV
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  • Abstract
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  • Application Information

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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 nanoma

Method used

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

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Embodiment 1

[0015] Take by weighing 0.45mmol of antimony trichloride, dissolve it in 15ml of absolute ethanol to obtain a colorless transparent solution, take by weighing 4.5mmol of urea and dissolve it in 30ml of deionized water to obtain a colorless and transparent solution, in the case of stirring Next, the urea aqueous solution is added dropwise in the ethanolic solution of antimony trichloride, and after the dropwise addition, the stirring is continued for 0.5 hour, and the obtained milky white mixed solution is transferred to a stainless steel hydrothermal reaction kettle lined with polytetrafluoroethylene ( The filling degree of the hydrothermal reaction kettle is: 75-85%), sealed. The reaction kettle was placed in an electric furnace, and reacted at 180°C for 20 hours. After the reaction, the obtained white precipitate was washed with alcohol and deionized water several times, and dried at 80°C to obtain antimony trioxide material with a hollow prism structure. The XRD pattern is ...

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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...

Claims

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Application Information

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IPC IPC(8): C01G30/00H01M4/48
CPCY02E60/12Y02E60/10
Inventor 王勇唐军军焦正吴明红吴冯丹张彰何雅琴
Owner SHANGHAI UNIV
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