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Preparation method of BiFeO3 sodium-ion battery anode material

A technology for sodium ion battery and anode material, which is applied in the field of preparation of anode material for sodium ion battery, can solve the problems of increasing the proportion of material cost, the safety problem of lithium battery is not fundamentally solved, restricting and the like, and achieves high capacity and improves capacity. , the effect of improving the degree of crystallization

Inactive Publication Date: 2013-07-24
SOUTHWEST UNIVERSITY
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  • Claims
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Problems solved by technology

[0003] At present, the large-scale development of lithium-ion batteries is limited by lithium resources, and the safety of lithium batteries has not been fundamentally resolved technically.
In the process of large-scale storage batteries in the future, the proportion of material costs will increase, which will be more constrained by resources.

Method used

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  • Preparation method of BiFeO3 sodium-ion battery anode material
  • Preparation method of BiFeO3 sodium-ion battery anode material
  • Preparation method of BiFeO3 sodium-ion battery anode material

Examples

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Embodiment 1

[0028] BiFeO of Example 1 3 The preparation method of sodium ion battery anode material comprises the following steps:

[0029] 1) BiFeO was prepared by conventional high-temperature solid-state sintering method 3 powder, BiFeO 3 The powder is pressed into a target;

[0030] 2) The pressed BiFeO 3 The target is loaded into the magnetron sputtering chamber;

[0031] 3) Use the copper sheet as the substrate, first wash with dilute hydrochloric acid to remove the oxide layer on the surface of the copper sheet, and then put the copper sheet into the magnetron sputtering chamber;

[0032] 4) Vacuumize the magnetron sputtering chamber and fill it with argon gas at a pressure of 1.0Pa, and deposit BiFeO on the copper sheet by magnetron sputtering method 3 Thin film, the deposition rate is 0.08 nm / s, and the deposition thickness is 300 nm;

[0033] 5) will deposit the BiFeO 3 The copper sheet of the film is vacuumed at 8.5×10 -4 Annealed at 600°C for 1 hour under the vacuum c...

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Abstract

The invention discloses a preparation method of a BiFeO3 sodium-ion battery anode material. The method comprises the following steps of: 1) pressing BiFeO3 powder to a target; 2) packaging the pressed BiFeO3 target into a magnetron sputtering cavity; 3) placing a substrate in the magnetron sputtering cavity; 4) vacuumizing the magnetron sputtering cavity and inflating inertial gas, and depositing a BiFeO3 thin film on the substrate by a magnetron sputtering method; and 5) annealing the substrate where the BiFeO3 thin film is deposited at 400-700 DEG C in vacuum condition, and cooling to obtain the BiFeO3 sodium-ion battery anode material. The BiFeO3 sodium-ion battery anode material prepared by the method has good unique physical property of transmitting sodium ions, and good crystallization degree of BiFeO3 is not easy to damage by transmission of sodium ions, so that, not only is the actual volume of the battery improved, but also the circulating service life of the battery is greatly prolonged.

Description

technical field [0001] The invention relates to a preparation method of an anode material of a sodium ion battery, in particular to a BiFeO 3 A method for preparing an anode material for a sodium ion battery. Background technique [0002] Since Gaston Plante proposed the concept of lead-acid battery in 1859, the chemical power industry has been exploring new secondary batteries with high specific energy and long cycle life. In 1990, Japan's SONY company took the lead in developing and commercializing lithium-ion batteries. It has shown broad application prospects and potential huge economic benefits in portable electronic devices, electric vehicles, space technology, and national defense industries. A research hotspot that has been widely concerned in the past year. [0003] At present, the large-scale development of lithium-ion batteries is limited by lithium resources, and the safety issue of lithium batteries has not been fundamentally resolved technically. In the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/58C23C14/06H01M4/52
CPCY02E60/10
Inventor 李长明孙柏
Owner SOUTHWEST UNIVERSITY
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