Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of gamma-Fe2O3 sodium ion battery anode material

A technology for sodium ion batteries and anode materials, which is applied in the field of preparation of anode materials for sodium ion batteries, can solve problems such as constraints, the safety of lithium batteries has not been fundamentally solved, and the proportion of material costs increases, so as to improve the degree of crystallization, increase the capacity, the effect of increasing the actual capacity

Inactive Publication Date: 2013-07-10
SOUTHWEST UNIVERSITY
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of gamma-Fe2O3 sodium ion battery anode material
  • Preparation method of gamma-Fe2O3 sodium ion battery anode material
  • Preparation method of gamma-Fe2O3 sodium ion battery anode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] γ-Fe of Example 1 2 o 3 The preparation method of sodium ion battery anode material comprises the following steps:

[0030] 1) Preparation of γ-Fe by conventional co-precipitation method 2 o 3 powder, the γ-Fe 2 o 3 The powder is pressed into a target;

[0031] 2) The pressed γ-Fe 2 o 3 The target is loaded into the magnetron sputtering chamber;

[0032] 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;

[0033] 4) Vacuumize the magnetron sputtering chamber and fill it with argon gas at a pressure of 3.0Pa, and deposit γ-Fe on the copper sheet by magnetron sputtering method 2 o 3 Thin film with a deposition rate of 0.08 nm / s and a deposition thickness of 350 nm;

[0034] 5) will deposit the γ-Fe 2 o 3 The copper sheet of the film is in a vacuum of 8.0×10 -5 Annealing at 400°C for 1 hour under t...

Embodiment 2

[0036] γ-Fe of Example 2 2 o 3 The preparation method of sodium ion battery anode material comprises the following steps:

[0037] 1) Preparation of γ-Fe by conventional co-precipitation method 2 o 3 powder, the γ-Fe 2 o 3 The powder is pressed into a target;

[0038] 2) The pressed γ-Fe 2 o 3 The target is loaded into the magnetron sputtering chamber;

[0039] 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;

[0040] 4) Vacuumize the magnetron sputtering chamber and fill it with argon gas at a pressure of 3.0Pa, and deposit γ-Fe on the copper sheet by magnetron sputtering method 2 o 3 Thin film with a deposition rate of 0.08 nm / s and a deposition thickness of 350 nm;

[0041] 5) will deposit the γ-Fe 2 o 3 The copper sheet of the film is in a vacuum of 8.0×10 -5 Annealing at 600°C for 1 hour under t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a gamma-Fe2O3 sodium ion battery anode material. The preparation method comprises the following steps of: 1) pressing gamma-Fe2O3 powder to form a target material; 2) loading the gamma-Fe2O3 target material formed by pressing into a magnetron sputtering cavity; 3) placing a substrate into the magnetron sputtering cavity; 4) performing vacuum pumping on the magnetron sputtering cavity, then filling inert gas, and depositing a gamma-Fe2O3 thin film on the substrate by utilizing a magnetron sputtering method; and 5) annealing the substrate with the deposited gamma-Fe2O3 thin film at the temperature of 300-700 DEG C under vacuum conditions, and cooling to obtain the gamma-Fe2O3 sodium ion battery anode material. The gamma-Fe2O3 sodium ion battery anode material prepared by the preparation method disclosed by the invention has a good unique physical property of transmitting sodium ions; and furthermore, the transmission of the sodium ions is less prone to damaging the good crystallization degree of gamma-Fe2O3, thus the actual capacity of a battery can be improved and the cycle life can be also 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 γ-Fe 2 o 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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M4/52
CPCY02E60/12Y02E60/10
Inventor 李长明孙柏
Owner SOUTHWEST UNIVERSITY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com