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High-density lithium ion battery anode material nickel-cobalt lithium aluminate and preparation method thereof

A lithium-ion battery, nickel-cobalt-aluminate lithium technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as being unsuitable for mass production, environmental pollution, and complex processes, achieving good consistency and low production costs. , the effect of simple process

Inactive Publication Date: 2013-04-17
HUNAN SOUNDDON NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Synthesis of nickel-cobalt lithium aluminate battery cathode material Li x Ni 0.8 co 0.15 Al 0.05-y m y o 2 The methods mainly include: co-precipitation method, coating method, low-heat solid-phase method, complexation method, solution-gel method. Co-precipitation method has relatively simple process and high material capacity, but it pollutes the environment; other methods are more complicated. , small output, high cost, not suitable for mass production

Method used

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  • High-density lithium ion battery anode material nickel-cobalt lithium aluminate and preparation method thereof
  • High-density lithium ion battery anode material nickel-cobalt lithium aluminate and preparation method thereof
  • High-density lithium ion battery anode material nickel-cobalt lithium aluminate and preparation method thereof

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Embodiment 1

[0022] Weigh nickel hydroxide, cobalt carbonate, and aluminum hydroxide according to the ratio of ion molar ratio Ni:Co:Al=0.8:0.15:0.05 and put them in an inclined mixer, add 1 times the weight of polyurethane balls and ball mill and mix for 3 hours; The mixed raw materials were calcined at 650°C for 10 hours in a pusher-type resistance furnace, according to 15m 3 The flow rate of / h is fed into oxygen during calcination, then cooled to room temperature and taken out; crushed and classified to obtain the oxide of the intermediate product nickel-cobalt-aluminum; according to the ratio of the ion molar ratio of the oxide of the intermediate product nickel-cobalt-aluminum to 1.03 Weigh lithium carbonate, put it into an inclined mixer, add zirconia balls with a mass ratio of 1:1 (material weight / ball weight) and vibrate and mix for 4 hours; Calcined for 15h, according to 15m 3 Oxygen is introduced during calcination at a flow rate of / h, cooled naturally to room temperature, cru...

Embodiment 2

[0027] Weigh nickel hydroxide, cobalt hydroxide, aluminum hydroxide and niobium pentoxide in the ratio of ion molar ratio Ni: Co: Al: Nb = 0.8: 0.15: 0.045: 0.005 and put them in the inclined mixer, add 1 Polyurethane balls of twice the weight were mixed for 3 hours; the mixed raw materials were calcined at 600°C for 10 hours in a pusher-type resistance furnace. 3 The flow rate of / h is passed into air or oxygen during calcination, then cooled to room temperature and taken out; crushed and classified to obtain the oxide of the intermediate product nickel-cobalt-aluminum-niobium; according to the ion molar ratio of the oxide of the intermediate product nickel-cobalt-aluminum-niobium Weigh lithium carbonate at a ratio of 1.05, put it into an inclined mixer, add zirconia balls with a mass ratio of 1:1 (material weight / ball weight) and vibrate and mix for 4 hours; Calcined at 830℃ for 12h, according to 15m 3 Oxygen is introduced during calcination at a flow rate of / h, cooled nat...

Embodiment 3

[0030] Weigh nickel carbonate, cobalt carbonate, aluminum oxide and gallium oxide in the ratio of ion molar ratio Ni: Co: Al: Ga = 0.8: 0.15: 0.03: 0.02 and put them in the inclined mixer, add 1 times the weight Polyurethane balls were milled and mixed for 3 hours; the mixed raw materials were calcined at 650°C for 10 hours in a push-plate resistance furnace, according to 10m 3 The flow rate of / h is passed into air or oxygen during calcination, then cooled to room temperature and taken out; crushed and classified to obtain the oxide of the intermediate product nickel-cobalt-aluminum-gallium; according to the ion molar ratio of the oxide of the intermediate product nickel-cobalt-aluminum-gallium Weigh lithium carbonate at a ratio of 1.05, put it into an inclined mixer, add zirconia balls with a mass ratio of 1:1 (material weight / ball weight) and vibrate and mix for 4 hours; Calcined at 930°C for 12h, according to 20m 3 The flow rate of / h is passed into air during calcination...

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Abstract

The invention discloses a high-density lithium ion battery anode material nickel-cobalt lithium aluminate and a preparation method thereof. The preparation method for the high-density lithium ion battery anode material nickel-cobalt lithium aluminate comprises the following steps of: carrying out ball-milling and mixing, pelleting and sintering on a treated nickel source, a treated cobalt source, a treated aluminum source and a treated doping element M source in stoichiometric proportion to obtain oxides of nickel, cobalt and aluminum; and carrying out secondary calcining on the oxides of the nickel, cobalt and aluminum and a lithium source after carrying out ball-milling and uniform mixing to obtain the high-density lithium ion battery anode material nickel-cobalt lithium aluminate. According to the preparation method disclosed by the invention, the materials are sufficiently and uniformly mixed, and then sintered at a high temperature by a solid-phase process, so that the compaction density and the specific capacity of the nickel-cobalt lithium aluminate are improved by the doping element; moreover, the process is simple, free of waste water and pollution to the environment. The preparation process is easy to control and operate, low in production cost, good in industrial prospect and easy to implement large-scale industrial production.

Description

technical field [0001] The invention relates to a lithium-ion battery positive electrode material, in particular to a high-density lithium-ion battery positive electrode material nickel-cobalt lithium aluminate and a preparation method thereof. Background technique [0002] As a new generation of green and environment-friendly power supply, lithium batteries have the advantages of high energy density and high discharge platform, and are widely used in mobile phones, cameras, notebook computers, power tools, miner's lamps, electric bicycles and electric vehicles. With the rapid development of electronic products, the energy and power requirements of lithium-ion batteries are getting higher and higher, and the positive electrode material of lithium batteries is an important part of lithium batteries and the main factor affecting the performance of lithium batteries. Now commercialized positive electrode materials There are mainly lithium cobalt oxide, lithium manganese oxide, ...

Claims

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Application Information

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IPC IPC(8): H01M4/525H01M4/485
CPCY02E60/10
Inventor 商士波刘力玮文一波吴传勇涂国营魏有清张守祥张小艳
Owner HUNAN SOUNDDON NEW ENERGY
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