Preparation method of lithium-nickel-cobalt-aluminum composite oxide cathode material for lithium ion battery

A composite oxide and lithium-ion battery technology, applied in battery electrodes, secondary batteries, electrochemical generators, etc., can solve the problems of resource scarcity, low energy density, and low capacity, and achieve simple process routes and excellent cycle performance , The effect of simple process method

Inactive Publication Date: 2018-02-27
济宁市无界科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes how well this new type of battery materials have been developed with improved properties compared to previous ones. They also show that they work at voltages between 4.2 V and 6.4 v (the highest possible charge or discharges) while still maintaining their high specific capacity. These improvements make them better suited for use in electric vehicles due to its longer lifespan and lower manufacturing costs.

Problems solved by technology

Layered transition metal oxide compounds have been studied extensively due to their ability to store or release charge when subjected to external stimuli like lightning strikes or electric current flow. These compositions can be useful in various fields including electronics devices that require fast response times and long lifetimes. They may find uses in different types of batteries ranging from small cells to large ones.

Method used

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  • Preparation method of lithium-nickel-cobalt-aluminum composite oxide cathode material for lithium ion battery
  • Preparation method of lithium-nickel-cobalt-aluminum composite oxide cathode material for lithium ion battery

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Embodiment 1

[0016] Weigh Li 2 CO 3 、Ni 0.815 co 0.15 Al 0.035 (OH) 2 and MnO 2 , Li, Ni 0.815 co 0.15 Al 0.035 , Mn molar ratio is 1.05: 0.95: 0.05, put into the roller ball mill with agate ball medium and fully mix and grind for 5 hours. Heat up at a heating rate of 300°C per hour, roast at a constant temperature for 5 hours after the temperature reaches 400°C, then heat up again, and roast at a constant temperature for 10 hours after the temperature reaches 850°C, then cool naturally to room temperature, and finally mix in a mixing mill and crushing to obtain the lithium-nickel-cobalt-aluminum composite oxide cathode material.

Embodiment 2

[0018] Weigh LiOH, Ni 0.815 co 0.15 Al 0.035 (OH) 2 and MnO 2 , Li, Ni 0.815 co 0.15 Al 0.035 , Mn molar ratio is 1.05: 0.95: 0.05, put into the roller ball mill with agate ball medium and fully mix and grind for 5 hours. Heat up at a heating rate of 300°C per hour, roast at a constant temperature for 4.5 hours after the temperature reaches 500°C, then heat up again, and roast at a constant temperature for 15 hours after the temperature reaches 700°C, then cool naturally to room temperature, and finally in the mixing and grinding equipment Mixed and crushed to obtain lithium-nickel-cobalt-aluminum composite oxide cathode material.

Embodiment 3

[0020] Weigh LiOH, Ni 0.815 co 0.15 Al 0.035 (OH) 2 and MoO 3 , Li, Ni 0.815 co 0.15 Al 0.035 , Mo molar ratio is 1.05:0.98:0.02, put into the roller ball mill that has agate ball medium together and fully mix and grind for 5 hours, after the raw material is mixed evenly, put into sintering sagger, after introducing protective gas in the atmosphere furnace, with Heat up at a heating rate of 300°C per hour, roast at a constant temperature for 4 hours after the temperature reaches 450°C, then heat up again, and roast at a constant temperature for 20 hours after the temperature reaches 780°C, then cool naturally to room temperature, and finally mix in a mixing mill and crushing to obtain the lithium-nickel-cobalt-aluminum composite oxide cathode material.

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Abstract

The invention discloses a preparation method for a lithium-nickel-cobalt-aluminum composite oxide cathode material for a lithium ion battery by using an oxidation process, belongs to the technical field of new energy materials and solves the main technical problem of improving the mass energy density of the cathode material for the lithium-ion battery. The preparation method for the lithium-nickel-cobalt-aluminum composite oxide cathode material for the lithium ion battery particularly comprises the following steps: weighing the materials of a lithium source, nickel-cobalt-aluminum hydroxide and doped modified elements (M) in a certain molar ratio, uniformly mixing, then presintering for 4 to 5h in the range of 400 to 500 DEG C in an atmosphere furnace introduced with oxygen, then rising the temperature to 700 to 850 DEG C and roasting at constant temperature for 10 to 20h, and naturally cooling to obtain the lithium-nickel-cobalt-aluminum composite oxide cathode material. The mass energy density of the lithium-nickel-cobalt-aluminum composite oxide cathode material is more than 1000Wh/kg, and cycle performance of the lithium-nickel-cobalt-aluminum composite oxide cathode materialis excellent. The lithium-nickel-cobalt-aluminum composite oxide cathode material for the lithium ion battery disclosed by the invention is simple in process, low in manufacturing cost, simple in process route, short in cycle, and low in energy consumption, and can be used in scale production.

Description

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Claims

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Application Information

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Owner 济宁市无界科技有限公司
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