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High-nickel positive electrode ternary material for lithium ion battery, and preparation method and application thereof

A lithium-ion battery, ternary material technology, applied in battery electrodes, positive electrodes, electrical components, etc., can solve the problem of high cost and achieve the effects of low cost, simple synthesis conditions and high capacity

Inactive Publication Date: 2017-11-21
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above problems in the prior art, the present invention provides a high-nickel positive electrode ternary material for lithium ion batteries and a preparation method thereof. The high-nickel positive electrode ternary material for lithium ion batteries and its preparation method should solve the current There is a problem that high-nickel positive electrode ternary materials for lithium-ion batteries need to be synthesized in an oxygen atmosphere, and the cost is high

Method used

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  • High-nickel positive electrode ternary material for lithium ion battery, and preparation method and application thereof
  • High-nickel positive electrode ternary material for lithium ion battery, and preparation method and application thereof
  • High-nickel positive electrode ternary material for lithium ion battery, and preparation method and application thereof

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Embodiment 1

[0024] A kind of high-nickel positive electrode ternary material for lithium ion battery, described high-nickel positive electrode ternary material mainly is made up of lithium, nickel, cobalt, manganese, oxygen, wherein Ni, the existence valence state of Co and Mn in the compound are respectively +2 / +3, +3 and +4 valence, typical hexagonal a-NaFeO 2 Layered structure.

[0025] The preparation method of above-mentioned a kind of lithium-ion battery high-nickel cathode ternary material, namely with Ni 0.8 co 0.1 mn 0.1 (OH) 2 LiNi, a high-nickel positive electrode ternary material for lithium-ion batteries, was prepared by high-temperature solid-state sintering method using three different lithium salts as lithium sources. 0.8 co 0.1 mn 0.1 o 2 .

[0026] The preparation method of the above-mentioned high-nickel positive electrode ternary material for a lithium ion battery specifically comprises the following steps:

[0027] Weigh 3g Ni respectively 0.8 co 0.1 mn 0....

Embodiment 2

[0042] A kind of high-nickel positive electrode ternary material for lithium ion battery, described high-nickel positive electrode ternary material mainly is made up of lithium, nickel, cobalt, manganese, oxygen, wherein Ni, the existence valence state of Co and Mn in the compound are respectively +2 / +3, +3 and +4 valence, typical hexagonal a-NaFeO 2 Layered structure.

[0043] The preparation method of above-mentioned a kind of lithium-ion battery high-nickel cathode ternary material, namely with Ni 0.8 co 0.1 mn 0.1 (OH) 2 LiNi, a high-nickel positive electrode ternary material for lithium-ion batteries, was prepared by high-temperature solid-state sintering method using three different lithium salts as lithium sources. 0.8 co 0.1 mn 0.1 o 2 .

[0044] The preparation method of the above-mentioned high-nickel positive electrode ternary material for a lithium ion battery specifically comprises the following steps:

[0045] Weigh 3g Ni respectively 0.8 co 0.1 mn 0....

Embodiment 3

[0050] A kind of high-nickel positive electrode ternary material for lithium ion battery, described high-nickel positive electrode ternary material mainly is made up of lithium, nickel, cobalt, manganese, oxygen, wherein Ni, the existence valence state of Co and Mn in the compound are respectively +2 / +3, +3 and +4 valence, typical hexagonal a-NaFeO 2 Layered structure.

[0051] The preparation method of above-mentioned a kind of lithium-ion battery high-nickel cathode ternary material, namely with Ni 0.8 co 0.1 mn 0.1 (OH) 2 LiNi, a high-nickel positive electrode ternary material for lithium-ion batteries, was prepared by high-temperature solid-state sintering method using three different lithium salts as lithium sources. 0.8 co 0.1 mn 0.1 o 2 .

[0052] The preparation method of the above-mentioned high-nickel positive electrode ternary material for a lithium ion battery specifically comprises the following steps:

[0053] Weigh 4g Ni respectively 0.8 co 0.1 mn 0....

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Abstract

The invention relates to a high-nickel positive electrode ternary material for a lithium ion battery. The material is composed of elemental lithium, elemental nickel, elemental cobalt, elemental manganese and elemental oxygen, the molecular formula of the material is LiNi0.8Co0.1Mn0.1O2, wherein the existence valence state of the elemental nickel in the material is +2 or +3, the existence valence state of the elemental cobalt in the material is +3, the existence valence state of the elemental manganese in the material is +4, and the high-nickel positive electrode ternary material for the lithium ion battery is a hexagonal a-NaFeO2 layered structure. The invention also provides a preparation method of the ternary material for the lithium ion battery. Ni0.8Co0.1Mn0.1(OH)2 used as a precursor and LiOH / Li2CO3 / LiNO3 used as a lithium source are calcined in an air atmosphere by through a high-temperature solid phase sintering technology to obtain the positive electrode material for the lithium ion battery. The lithium ion battery positive electrode material has the advantages of high capacity, good cycle performances, simple synthesis conditions and low cost.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to an electrochemical battery, in particular to a high-nickel positive electrode material for a lithium-ion battery and a preparation method and application thereof. Background technique [0002] With the rapid development of various portable electronic devices such as cameras, mobile phones, and notebook computers, as well as electric vehicles, people's requirements for the performance of lithium-ion batteries (LIBs), which are used in power supplies, are also increasing. LIBs is a secondary battery, mainly composed of positive electrode, negative electrode, separator and electrolyte, and works by the movement of lithium ions between the positive and negative electrodes. The performance of lithium-ion batteries, such as battery voltage, cycle performance, energy density, life, safety, etc., are closely related to the properties of positive and negative electrode materials. Among the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/0525
CPCC01G53/006C01P2002/72C01P2006/40H01M4/505H01M4/525H01M10/0525H01M2004/028Y02E60/10
Inventor 张志丽邵霞李志强陈东辉
Owner SHANGHAI INST OF TECH
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