Lithium-ion battery anode material, non-aqueous electrolyte lithium-ion battery and preparation method of non-aqueous electrolyte lithium-ion battery

A lithium-ion battery and non-aqueous electrolyte technology, applied in the field of lithium-ion batteries, can solve problems such as unstable lithium dendrites in liquid electrolytes, and achieve the effects of improving electrochemical performance, reducing interface impedance, and good electrochemical performance

Pending Publication Date: 2019-06-18
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The second object of the present invention is to provide a non-aqueous electrolyte lithium-ion battery, which can solve the problems of unstable liquid electrolyte and serious lithium dendrite problems, such as using traditional liquid electrolyte and graphite negative electrode in the charging process of lithium-ion batteries. Many problems faced by materials

Method used

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  • Lithium-ion battery anode material, non-aqueous electrolyte lithium-ion battery and preparation method of non-aqueous electrolyte lithium-ion battery
  • Lithium-ion battery anode material, non-aqueous electrolyte lithium-ion battery and preparation method of non-aqueous electrolyte lithium-ion battery
  • Lithium-ion battery anode material, non-aqueous electrolyte lithium-ion battery and preparation method of non-aqueous electrolyte lithium-ion battery

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preparation example Construction

[0069] As a further embodiment, the lithium ion battery negative electrode material M x Ti 2+xy-5x Nb 10+x(4-y) O 29 The preparation method includes solid phase method, solution method, template method and electrospinning method. The following are the specific steps of each preparation method.

[0070] Solid phase method:

[0071] The solid phase method includes the following steps: mixing the metal M source, Ti source, and Nb source in a molar ratio of M:Ti:Nb=x:(2+xy-5x):[10+x(4-y)], and then Perform high-energy ball milling and high-temperature sintering in sequence to obtain M x Ti 2+xy-5x Nb 10+x(4-y) O 29 Powder; the high temperature sintering temperature is 1100~1400℃, and the high temperature sintering time is 3~5h.

[0072] Wherein, the metal M source is M oxide and / or M salt, and the M salt is acetylacetone M and / or M acetate; the Ti source is titanium dioxide, tetraisopropyl titanate, tetrabutyl titanate, hydrated titanium oxysulfate One or any combination;...

Embodiment 1

[0110] 本实施例提供了一种采用固相法制备Cu 0.3 Ti 1.1 Nb 10.6 o 29 电极材料的方法,其包括以下步骤:

[0111] After mixing the proportion of copper oxide, titanium dioxide, and penta oxide according to the proportion of Moore ratio 0.3: 1.1: 10.6, it can be mixed with a high -energy ball milling method. 0.3 Ti 1.1 Nb 10.6 o 29 powder.

Embodiment 2

[0113] 本实施例提供了一种采用固相法制备Mg 0.3 Ti 1.1 Nb 10.6 o 29 电极材料的方法,其包括以下步骤:

[0114] After mixing with a high -energy ball mill method based on the ratio of Moore ratio 0.3: 1.1: 10.6, it can be mixed at 1300 to get MG 0.3 Ti 1.1 Nb 10.6 o 29 powder.

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Abstract

The invention provides a lithium-ion battery anode material. A general formula of a compound of the lithium-ion battery anode material is M<x>Ti<2+xy-5x>Nb<10+x(4-y)>O<29>, wherein M denotes metal ions, x denotes the atomic weight of M in the compound, y denotes the valence state of the metal ions, and the relations that 0<x<=10, 0<y<=5, 2+xy-5x>=0, and 10+x(4-y)>=0 are met. The invention furtherprovides a non-aqueous electrolyte lithium-ion battery and a preparation method thereof. The lithium-ion battery anode material has high theoretical specific capacity, and high safety performance, andhas the advantages of high reversible specific capacity, high coulomb efficiency, excellent cycle performance and the like.

Description

【Technical field】 [0001] The invention relates to the technical field of lithium ion batteries, in particular to a lithium ion battery negative electrode material, a non-aqueous electrolyte lithium ion battery and a preparation method thereof. 【Background technique】 [0002] Due to the advantages of high power density, high energy density, etc., lithium-ion batteries are recognized as a very promising energy source for electric vehicles. Especially with the popularization of new energy vehicles, the research and development of power batteries has become the key to the rapid development of new energy. However, there is still a lack of power batteries with excellent performance on the market, and electrode materials are a key factor affecting power batteries. At present, most commercial lithium-ion batteries use graphite as anode material and liquid organic solution as electrolyte. Graphite has a high theoretical capacity (372mAh g -1 ), long cycle life, low cost, etc. Howev...

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M4/485H01M4/505H01M4/525H01M10/0525H01M10/0562H01M10/058
CPCY02E60/10Y02P70/50
Inventor 张健赵前进陈少海
Owner AAC TECH PTE LTD
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