Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of negative electrode material of organic system sodium-ion battery

A technology of sodium ion battery and negative electrode material, which is applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor rate performance, low conductivity, and influence on cycle stability, and achieve enhanced conductivity, simple method, The effect of improving cycle stability

Inactive Publication Date: 2016-07-27
DONGGUAN MCNAIR NEW POWER +2
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since NaTi 2 (PO 4 ) 3 The low conductivity, its rate performance is very poor, and the cycle stability is also affected

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 negative electrode material of organic system sodium-ion battery
  • Preparation method of negative electrode material of organic system sodium-ion battery
  • Preparation method of negative electrode material of organic system sodium-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a carbon-coated NaTi 2 (PO 4 ) 3 The preparation method of material comprises the following steps:

[0031] In the first step, 0.052molCH 3 COONa·3H 2 O, 0.10molTiO 2 , 0.15mol (NH 4 ) 2 HPO 4 Ball mill with acetone for 2 hours, the speed of the ball mill is 200 rpm, dry at 80°C for 2 hours, grind into powder, and calcinate at 450°C in air for 4 hours;

[0032] In the second step, the powder calcined in the first step is ball-milled with 8.0 g of glucose for 2 hours at a speed of 200 rpm, and then calcined at 800°C for 18 hours under an argon atmosphere to prepare carbon-coated NaTi 2 (PO 4 ) 3 Material.

[0033]TEM measurements show that the carbon coating is continuously coated on the NaTi 2 (PO 4 ) 3 surface, and the thickness of the carbon coating is 3μm-15μm.

[0034] For the carbon-coated NaTi prepared in Example 1 2 (PO 4 ) 3 The electrochemical properties of the material were tested, specifically, the carbon-coated NaTi...

Embodiment 2

[0037] This embodiment provides a carbon-coated NaTi 2 (PO 4 ) 3 The preparation method of material comprises the following steps:

[0038] In the first step, 0.051molCH 3 COONa·3H 2 O, 0.10molTiO 2 , 0.15mol (NH 4 ) 2 HPO 4 Ball mill with acetone for 3 hours at a speed of 250 rpm, dry at 90° C. for 3 hours, grind into powder, and calcinate at 500° C. in air for 6 hours.

[0039] In the second step, the powder calcined in the first step is ball-milled with 4.0 g of glucose for 3 hours at a speed of 250 rpm, and then calcined at 850°C for 15 hours in a nitrogen atmosphere to prepare carbon-coated NaTi 2 (PO 4 ) 3 Material.

[0040] TEM measurements show that the carbon coating is intermittently coated on the NaTi 2 (PO 4 ) 3 surface, and the thickness of the carbon coating is 2μm-10μm.

[0041] The electrochemical performance and the XRD figure of the material prepared by the method test embodiment 2 adopting the method described in embodiment 1, gained result se...

Embodiment 3

[0044] This embodiment provides a carbon-coated NaTi 2 (PO 4 ) 3 The preparation method of material comprises the following steps:

[0045] In the first step, 0.053molCH 3 COONa·3H 2 O, 0.10molTiO 2 , 0.15mol (NH 4 ) 2 HPO 4 Ball mill with acetone for 2.5 hours, the speed of the ball mill is 300 rpm, dry at 70°C for 5 hours, grind into powder, and calcined in air at 550°C for 2 hours;

[0046] In the second step, the powder calcined in the second step is ball-milled with 2.0 g of glucose for 3 hours at a speed of 300 rpm, and then calcined at 800°C for 20 hours under an argon atmosphere to prepare carbon-coated NaTi 2 (PO 4 ) 3 Material.

[0047] TEM measurements show that the carbon coating is intermittently coated on the NaTi 2 (PO 4 ) 3 surface, and the thickness of the carbon coating is 3μm-8μm.

[0048] The electrochemical performance of the material prepared in Example 3 was tested by the method described in Example 1, and the results showed that the mater...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of negative electrode materials of batteries, and in particular relates to a preparation method of a negative electrode material of an organic system sodium-ion battery. The negative electrode material is carbon coated NaTi2(PO4)3, and the preparation method includes ball-milling, drying and grinding CH3COONa.3H2O, TiO2 and (NH4)2HPO4 according to the molar ratio of (1.01-1.5):2:3 with acetone, and calcining at 450-550 DEG C in the air; and ball-milling powder obtained after calcination with a carbon source, and calcining at 800-950 DEG C under protective atmosphere to obtain carbon coated NaTi2(PO4)3. Compared with the prior art, the NaTi2(PO4)3@C material with a core-shell structure is prepared through a ball milling-calcining method. The structure can improve structural stability of the NaTi2(PO4)3 material, enhance electric conductivity of the NaTi2(PO4)3 material, be favorable for increasing sodium storage specific capacity of the NaTi2(PO4)3 material, and be beneficial to improvement on cycling stability of the NaTi2(PO4)3 material.

Description

technical field [0001] The invention belongs to the technical field of battery negative electrode materials, and in particular relates to a preparation method of an organic system sodium ion battery negative electrode material. Background technique [0002] The excessive consumption of fossil fuels and the environmental problems they bring have prompted the widespread application of new energy sources. However, how to stably and safely integrate intermittent renewable energy into the grid is a key issue. Therefore, the large-scale use of secondary batteries with high energy density, high conversion efficiency, and simple maintenance to store and regulate intermittent new energy is currently the best solution to realize the intelligent operation of the power grid. Organic sodium-ion batteries are very promising candidates in this field due to their abundant raw material sources, environmental friendliness, high safety and low price, and have attracted widespread attention. ...

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): H01M4/36H01M4/58H01M4/62H01M10/054
CPCH01M4/366H01M4/5825H01M4/625H01M10/054Y02E60/10
Inventor 张嘉玲庞佩佩宋晓娜邓耀明黄云辉周训富刘继策石海敏孙淼王正赵付双麦立强汪国秀侴术雷
Owner DONGGUAN MCNAIR NEW POWER
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