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Lithium-ion battery Li4Ti5O12 and TiO2 complex phase electrode material and preparation method thereof

A technology of lithium ion battery and electrode material, applied in the field of lithium ion battery Li4Ti5O12 and TiO2 multiphase electrode material and its preparation, can solve the problem that fast charge and discharge cannot be well satisfied, and achieves lightening polarization, reducing electrode polarization, The effect of increasing capacity

Inactive Publication Date: 2018-10-16
陕西动力越源科技有限公司
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AI Technical Summary

Problems solved by technology

Although these methods have improved the performance of the material to a certain extent, they still cannot meet people's needs for fast charging and discharging. Therefore, it is necessary to invent a method that can further improve the Li 4 Ti 5 o 12 rate performance method

Method used

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  • Lithium-ion battery Li4Ti5O12 and TiO2 complex phase electrode material and preparation method thereof
  • Lithium-ion battery Li4Ti5O12 and TiO2 complex phase electrode material and preparation method thereof
  • Lithium-ion battery Li4Ti5O12 and TiO2 complex phase electrode material and preparation method thereof

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only some embodiments of the present invention; rather than all embodiments. Based on the embodiments of the present invention; all other embodiments obtained by persons of ordinary skill in the art without creative work; all belong to the protection scope of the present invention.

[0020] see Figure 1-2 , a Li4Ti5O12 and TiO2 composite electrode material for a lithium ion battery, characterized in that it includes tetrabutyl titanate, NaOH and HCl.

[0021] A lithium ion battery Li 4 Ti 5 o 12 with TiO 2 Composite electrode material, comprising the following steps:

[0022] S1, hydrothermal reaction of tetrabutyl titanate and NaOH aqueous solution to obtain Na 2 Ti 3 o 7 ultra-thin nanowires;

[0023] S2, the Na 2 ...

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Abstract

The invention discloses a lithium-ion battery Li4Ti5O12 and TiO2 complex phase electrode material which comprises tetrabutyl titanate, NaOH and HCl. According to the lithium-ion battery Li4Ti5O12 andTiO2 complex phase electrode material prepared in the invention, the Li4Ti5O12 can achieve a buffering effect during high current discharge, and the TiO2 achieves a buffering effect during high current discharge, so that polarization of electrodes is reduced, and the capacity is improved. Different from a single-phase material and a general mixed electrode material for simply physically mixing twoactive materials, the lithium-ion battery Li4Ti5O12 and TiO2 complex phase electrode material disclosed by the invention has the advantages that due to an in-situ reaction method, Li4Ti5O12 grains and TiO2 grains in the prepared complex phase material are tightly connected by virtue of semi-coherent or non-coherent boundaries, so that lithium ions can rapidly migrate between the two materials inthe charge and discharge process, and the synergistic effect is well achieved.

Description

technical field [0001] The present invention relates to Li 4 Ti 5 o 12 with TiO 2 The preparation technology field of complex phase material, more specifically, relate to a kind of lithium ion battery Li 4 Ti 5 o 12 with TiO 2 Multiphase electrode material and preparation method thereof. Background technique [0002] In the past 20 years, the development of lithium-ion batteries has had a revolutionary impact on industries such as mobile phones, computers, and automobiles. At present, most of the negative electrode materials of commercial lithium-ion batteries are carbon-based materials, and their lithium intercalation potential is very close to that of metal lithium. Lithium metal is deposited on the surface to form dendrites, causing safety problems. In order to improve the defects of carbon anode materials, many non-carbon anode materials have been developed. Among them, Li 4 Ti 5 o 12 has its unique advantages. Li 4 Ti 5 o 12 It belongs to the spinel stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/485H01M10/0525B82Y30/00
CPCB82Y30/00H01M4/362H01M4/48H01M4/485H01M10/0525Y02E60/10
Inventor 马越
Owner 陕西动力越源科技有限公司
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