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A kind of antimony-based composite negative electrode material and preparation method thereof

A negative electrode material, antimony-based technology, applied in the field of electrochemical power supply materials, can solve the problem of low specific capacity of antimony-based composite materials, achieve low raw material cost, less time-consuming, and improve structural stability

Active Publication Date: 2018-09-21
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of low specific capacity of antimony-based composite materials, the invention provides a kind of antimony-based composite negative electrode material and its preparation method
The antimony-based composite negative electrode material of the present invention originally solves the problem of low specific capacity of the antimony-based composite material, and at the same time, the antimony-based composite negative electrode material of the present invention also has the characteristics of low raw material cost and good structural stability of the composite material

Method used

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  • A kind of antimony-based composite negative electrode material and preparation method thereof
  • A kind of antimony-based composite negative electrode material and preparation method thereof
  • A kind of antimony-based composite negative electrode material and preparation method thereof

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Embodiment 1

[0039] Embodiment 1. Antimony-based composite negative electrode material 1

[0040] as attached figure 1 As shown, Embodiment 1 of the present invention provides a method for preparing an antimony-based composite negative electrode material, which specifically includes the following steps:

[0041] (101), providing antimony metal and titanium oxide;

[0042] (102), mixing the antimony metal and titanium oxide in a mass ratio of 4:1-1:4 to obtain a mixture of the antimony metal and titanium oxide; and

[0043] (103), ball milling the mixture.

[0044]Specifically, 1 part of antimony metal powder and 4 parts of titanium oxide powder are mixed, and after mixing, the mixture is added into a stainless steel ball mill tank for ball milling, the ball-to-material ratio is 20:1, then 100 parts of stainless steel balls are added, and the The stainless steel ball milling tank was ball milled at a speed of 300rpm / min for 20 hours, and the obtained ball milled product was the antimon...

Embodiment 2

[0045] Embodiment 2. Antimony-based composite negative electrode material 2

[0046] Example 2 of the present invention also provides a method for preparing an antimony-based composite negative electrode material, the basic steps of which are the same as those in Example 1, the difference being that 2 parts of antimony metal powder and 1 part of titanium oxide powder are mixed, and the mixture is mixed Add it into a stainless steel ball mill tank for ball milling, the ball-to-material ratio is 20:1, then add 60 parts of stainless steel balls, and ball mill the stainless steel ball mill tank at a speed of 300rpm / min for 8 hours, and the obtained product after ball milling is It is an antimony-based composite negative electrode material 1, which can be directly used to prepare electrodes, and the above-mentioned steps are carried out in a glove box.

Embodiment 3

[0047] Embodiment 3. Antimony-based composite negative electrode material 3

[0048] as attached figure 2 As shown, Embodiment 3 of the present invention provides a method for preparing an antimony-based composite negative electrode material, which specifically includes the following steps:

[0049] (201), providing antimony metal, titanium oxide and graphene;

[0050] (202), mixing the antimony metal and titanium oxide in a mass ratio of 4:1-1:4 to obtain a mixture of the antimony metal and titanium oxide;

[0051] (203), ball milling the mixture for the first time;

[0052] (204), adding 0 to 60 wt% of the graphene into the mixture after the first ball milling; and

[0053] (205), ball milling the mixture after adding the graphene for the second time.

[0054] Specifically, 1 part of antimony metal powder and 4 parts of titanium oxide powder are mixed, and after mixing, the mixture is added into a stainless steel ball mill tank for the first ball milling, and the ball...

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Abstract

The present invention discloses an antimony-based composite negative electrode material and a preparation method thereof, and belongs to the field of electrochemical power materials. The antimony-based composite negative electrode material includes the raw materials of metal antimony and titanium oxide, and the mass ratio of antimony metal to titanium oxide is 4: 1 to 1: 4. The preparation method of the antimony-based composite negative electrode material comprises mixing of the metal antimony and the titanium oxide in the mass ratio of 4: 1 to 1: 4 to obtain a mixture, and ball-milling of the mixture. The antimony-based composite negative electrode material solves the problem of low specific capacity of original antimony-based composite materials, and the antimony-based composite negative electrode material has the characteristics of low material cost and increase of structural stability of the composite material.

Description

technical field [0001] The invention relates to the field of electrochemical power source materials, in particular to an antimony-based composite negative electrode material and a preparation method thereof. Background technique [0002] Lithium-ion battery is a new type of energy storage battery developed in the 21st century. Due to its high energy and low consumption characteristics, lithium-ion batteries have been widely used in mobile phones, electric vehicles, energy storage and other fields. With the current development, the energy density requirements of batteries are getting higher and higher, especially the launch of environmentally friendly electric vehicles has greatly promoted the development of large-capacity, high-power power batteries. At present, graphite and modified graphite are widely used as negative electrode materials in commercial lithium-ion batteries, but their theoretical specific capacity is 372mAh / g, and the actual specific capacity is only 300-3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36
CPCY02E60/10
Inventor 戚雯武英周少雄陈英况春江
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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