Tin dioxide/zirconium oxide doped carbon composite material for lithium ion battery, preparation method and application thereof

A carbon composite material, tin dioxide technology, applied in the field of electrochemistry, can solve the problems of poor cycle stability, volume expansion, Coulomb efficiency and rate performance, and achieve the effects of low cost, difficult capacity and strong operability

Active Publication Date: 2021-01-08
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the volume expansion, poor cycle stability, coulombic efficiency and rate performance of tin dioxide in the prior art as lithium-ion battery negative electrode materials Defects, providing a preparation method of tin dioxide / zirconia doped carbon composite materials for lithium ion batteries

Method used

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  • Tin dioxide/zirconium oxide doped carbon composite material for lithium ion battery, preparation method and application thereof
  • Tin dioxide/zirconium oxide doped carbon composite material for lithium ion battery, preparation method and application thereof
  • Tin dioxide/zirconium oxide doped carbon composite material for lithium ion battery, preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0039] This embodiment provides a tin dioxide / mercuric oxide doped carbon composite material, the specific preparation steps are as follows:

[0040] S1. Put 0.7g (0.0046mol) tin dioxide and 0.05g (0.0004mol) zirconia into a ball mill jar and carry out 30min intermittent ball milling for 30h to obtain a tin dioxide / zirconia composite material;

[0041] S2. Continue to add 0.25g (0.0208mol) acetylene black to continue ball milling, and continue ball milling for 5h to obtain tin dioxide / zirconia doped carbon composite material, denoted as SnO 2 @ZrO 2 @C.

Embodiment 2

[0043] This embodiment provides a tin dioxide / zirconia doped carbon composite material, the specific preparation steps are as follows:

[0044]S1. After putting 0.7g (0.0046mol) carbon black and 0.03g (0.0002mol) zirconia into a ball mill jar and carrying out 30min intermittent ball milling for 24h, a tin dioxide / zirconia composite material is obtained;

[0045] S2. Continue to add 0.25g (0.0208mol) citric acid to continue ball milling, and continue ball milling for 10h to obtain a tin dioxide / zirconia doped carbon composite material, which is denoted as SnO 2 @ZrO 2 @C.

Embodiment 3

[0047] This embodiment provides a tin dioxide / zirconia doped carbon composite material, the specific preparation steps are as follows:

[0048] S1. After putting 0.7g (0.0046mol) carbon black and 0.05g (0.0004mol) zirconia into a ball mill jar and carrying out 30min intermittent ball milling for 48h, a tin dioxide / zirconia composite material is obtained;

[0049] S2. Continue to add 0.7g (0.0583mol) acetylene black to continue ball milling, and continue ball milling for 4h to obtain a tin dioxide / zirconia doped carbon composite material, which is denoted as SnO 2 @ZrO 2 @C.

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Abstract

The invention provides a tin dioxide / zirconium oxide doped carbon composite material for a lithium ion battery, a preparation method and application thereof. The preparation method comprises the following steps: mixing and ball-milling tin dioxide and zirconium oxide, adding graphite, and further performing ball-milling to obtain the tin dioxide / zirconium oxide doped carbon composite material, andhas the advantages of simple technique, high operability and low cost. The tin dioxide / zirconium oxide doped carbon composite material prepared by the preparation method also has a sheet structure, tin dioxide doped zirconium oxide is uniformly distributed on carbon, and when the material is used in a lithium ion battery, the capacity of the lithium ion battery is not easy to attenuate under a long cycle condition; and under a longer cycle condition, the capacity can be increased.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a tin dioxide / zirconia doped carbon composite material for a lithium ion battery and a preparation method and application thereof. Background technique [0002] With the development of microelectronics technology in the 21st century, miniaturized equipment is increasing day by day, which puts forward high requirements for power supply. Lithium batteries have entered a large-scale practical stage. Lithium-ion batteries have been widely used in portable electrical appliances such as laptops, cameras, and mobile communications due to their unique performance advantages. The currently developed large-capacity lithium-ion batteries have been used in electric vehicles and are expected to become one of the main power sources for electric vehicles in the 21st century, and will be used in satellites, aerospace and energy storage. The anode material plays a vital rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/02C01B32/05C01G25/02H01M4/48H01M4/62H01M10/0525B82Y40/00B82Y30/00
CPCC01G19/02C01G25/02C01B32/05H01M4/483H01M4/62H01M4/625H01M10/0525B82Y30/00B82Y40/00C01P2004/03C01P2004/64C01P2004/80C01P2002/72C01P2004/61Y02E60/10
Inventor 何苗白晨冯叶锋
Owner GUANGDONG UNIV OF TECH
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