Supercharge Your Innovation With Domain-Expert AI Agents!

A low-cost negative electrode material for sodium batteries and its preparation method

A negative electrode material and low-cost technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of high cost, performance attenuation, negative electrode volume change, etc., and achieve low cost, buffer volume deformation, and high de-intercalation rate Effect

Active Publication Date: 2020-01-10
钱陈
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the shortcomings of the existing sodium ion batteries, such as storage and deintercalation of the sodium ion in the negative electrode material alloy, titanium compound, etc. Low-cost negative electrode material and preparation method thereof

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a low-cost negative electrode material for a sodium battery, characterized in that the method comprises the following steps:

[0029] (1) Copper sulfate and aluminum hydroxide were homogenized by ball milling in water at a mass ratio of 1:1, then added citric acid and boron source and aged at 60-80°C for more than 24 hours to obtain a sol; The consumption of described citric acid is 1% of copper sulfate and aluminum hydroxide gross mass; Described boron source is sodium borate, and consumption is 15% of copper sulfate and aluminum hydroxide gross mass;

[0030] (2) Add sodium hydroxide to the sol obtained in step (1) to maintain the pH of the reaction system at 10-12, heat to 100-120°C for hydrothermal reaction, copper sulfate and aluminum hydroxide form layered double metal hydrogen Oxide, having a hydrotalcite-like structure with a boron source embedded in its layer;

[0031] (3) Centrifuge the material obtained in step (2), remove most of the ...

Embodiment 2

[0034]A method for preparing a low-cost negative electrode material for a sodium battery, characterized in that the method comprises the following steps:

[0035] (1) Copper sulfate and aluminum hydroxide were homogenized by ball milling in water at a mass ratio of 1:2, then added citric acid and boron source and aged at 60-80°C for more than 24 hours to obtain a sol; The consumption of said citric acid is 2% of copper sulfate and aluminum hydroxide gross mass; Described boron source sodium polyborate, consumption is 20% of copper sulfate and aluminum hydroxide gross mass;

[0036] (2) Add sodium hydroxide to the sol obtained in step (1) to maintain the pH of the reaction system at 10-12, heat to 100-120°C for hydrothermal reaction, copper sulfate and aluminum hydroxide form layered double metal hydrogen Oxide, having a hydrotalcite-like structure with a boron source embedded in its layer;

[0037] (3) Centrifuge the material obtained in step (2), remove most of the liquid, a...

Embodiment 3

[0040] A method for preparing a low-cost negative electrode material for a sodium battery, characterized in that the method comprises the following steps:

[0041] (1) Copper sulfate and aluminum hydroxide were homogenized by ball milling in water at a mass ratio of 1:3, then added citric acid and boron source and aged at 60-80°C for more than 24 hours to obtain a sol; The consumption of said citric acid is 3% of copper sulfate and aluminum hydroxide gross mass; Described boron source is boric acid, and consumption is 20% of copper sulfate and aluminum hydroxide gross mass;

[0042] (2) Add sodium hydroxide to the sol obtained in step (1) to maintain the pH of the reaction system at 10-12, heat to 100-120°C for hydrothermal reaction, copper sulfate and aluminum hydroxide form layered double metal hydrogen Oxide, having a hydrotalcite-like structure with a boron source embedded in its layer;

[0043] (3) Centrifuge the material obtained in step (2), remove most of the liquid, ...

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 relates to the field of a novel secondary battery, in particular to a low-cost negative electrode material for a sodium battery and a preparation method of the low-cost negative electrode material. Hydrotalcite-similar interlayer gaps supported by hexagonal boron nitride and silicon nitride are formed by interlayer reaction of a boron source and a silicon source in a layered bimetalhydroxide formed from copper sulfate and aluminum hydroxide, the hexagonal boron nitride and the silicon nitride are used as objects and are stayed in the interlayer gaps, so that the layer distance is expanded, sodium ions can be freely de-intercalated, the negative electrode material has relatively high capability of storing de-intercalated sodium ions, and the volume deformation of the negativeelectrode material caused by de-intercalation of the sodium ions is effectively buffered. The negative electrode material prepared by the method is available in raw material and low in cost, the preparation process is simple and short and is easy to control, the cost of the sodium ion battery negative electrode is substantially reduced, and a reliable technical guarantee is provided for promotionof the sodium battery on a large scale.

Description

technical field [0001] The invention relates to the field of novel secondary batteries, in particular to a low-cost negative electrode material for sodium batteries and a preparation method. Background technique [0002] With the acceleration of the construction of electric vehicles and smart grids, the development of energy storage technology has become one of the hottest research fields in the world. Energy storage batteries are currently the main bottleneck technology for electric vehicles and smart grids. With the development of new energy vehicles, lithium-ion secondary batteries have developed rapidly. Due to the advantages of high specific energy density, wide operating temperature range, long charge and discharge life, small self-discharge, and no memory effect, lithium-ion secondary batteries are considered to be the most promising chemical power sources at this stage. [0003] However, for energy storage batteries, people pay more attention to their cost while pur...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/62H01M10/054
CPCH01M4/364H01M4/386H01M4/628H01M10/054Y02E60/10
Inventor 陈庆曾军堂
Owner 钱陈
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