A preparing method of a high-power high-energy density lithium ion battery

A lithium-ion battery, high energy density technology, used in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve problems such as rate type energy difference, poor liquid absorption ability, etc. The effect of improving conductivity and rate capability

Inactive Publication Date: 2015-07-08
JIANGSU LENENG BATTERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This invention aims at the disadvantages of current ternary materials such as poor multiplier energy and poor liquid absorption capacity. The purpose of this

Method used

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  • A preparing method of a high-power high-energy density lithium ion battery
  • A preparing method of a high-power high-energy density lithium ion battery

Examples

Experimental program
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Example Embodiment

[0012] Example 1:

[0013] A method for preparing a high-power and high-energy density lithium ion battery includes the following steps:

[0014] 1. Cathode material: Weigh 30 grams of polystyrene with a particle size of 50nm and 100 grams of polystyrene with a particle size of 1.5μm, add it to 1000g of double-distilled water solvent and stir well, then add 26.2g (0.1mol) of NiSO 4 ·6H 2 O, 28.1 g (0.1mol) C O SO 4 ·7H 2 O, 19.8 grams (0.1mol) MnCl 2 ·4H 2 O, 28.8 grams (0.3 mol) of ammonium carbonate, filtered to obtain an organic-inorganic composite material, then mixed with 7.2 grams (0.3 mol) of lithium hydroxide, and dissolved and removed the template with 100 ml of tetrahydrofuran organic solvent. After filtration Get Li(Ni x Co y Mn 1-x-y )O 2 (Denoted as: NCM) material, and then place the above-mentioned dried NCM material in the reactor, pass nitrogen into the reactor, and heat to make the temperature in the reactor reach 800°C, stop passing the nitrogen, and then The re...

Example Embodiment

[0016] Example 2:

[0017] 1. Cathode material: Weigh 10 grams of polystyrene with a particle size of 40nm and 40 grams of polystyrene with a particle size of 1.0μm, add them to 1000g of ethanol solvent and stir well, then add 26.2g (0.1mol) of NiSO 4 ·6H 2 O, 28.1 g (0.1mol) C O SO 4 ·7H 2 O, 19.8 grams (0.1mol) MnCl 2 ·4H 2 O, 6.0 g urea (0.1 mol), filtered to obtain an organic-inorganic composite material, then mixed with 7.4 g (0.1 mol) of lithium carbonate, and dissolved and removed the template with 200 ml of tetrahydrofuran organic solvent, and filtered to obtain Li (Ni x Co y Mn 1-x-y )O 2 (Denoted as: NCM) material, and then place the above-mentioned dried NCM material in the reactor, pass nitrogen into the reactor, and heat to make the temperature in the reactor reach 500 ℃, stop passing the nitrogen, and then The reactor was filled with acetylene and ammonia gas and kept at 8000°C for 60 minutes to grow carbon nanotubes on the surface of the NCM; after that, the acetyle...

Example Embodiment

[0019] Example 3:

[0020] 1. Cathode material: Weigh 10 grams of 50nm polystyrene and 40 grams of 2.0μm polystyrene, add them to 1000 grams of ethanol solvent and stir well, then add 26.2 grams (0.1mol) of NiSO 4 ·6H 2 O, 28.1 g (0.1mol) C O SO 4 ·7H 2 O, 15.1g (0.1mol) MnSO 4 30.0 g (0.5 mol) of urea, filtered to obtain an organic-inorganic composite material, then mixed with 37.0 g (0.5 mol) of lithium carbonate, and dissolved and removed the template with 400 ml of tetrahydrofuran organic solvent, and filtered to obtain Li( Ni x Co y Mn 1-x-y )O 2 (Denoted as: NCM) material, and then place the above-mentioned dried NCM material in the reactor, pass nitrogen into the reactor, and heat to make the temperature in the reactor reach 1000°C, stop passing the nitrogen, and then The reactor was filled with acetylene and ammonia gas and kept at 1200°C for 20 minutes to grow carbon nanotubes on the surface of the NCM; after that, the acetylene and ammonia gas were turned off, and then h...

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Abstract

A preparing method of a high-power high-energy density lithium ion battery is provided. According to the lithium ion battery, the cathode material is Li(Ni<0.6>Co<0.2>Mn<0.2>)O2/carbon nanotube composite ternary material, the inner core is hollow, the outer core is of a double-layer structure, the first layer is Li(Ni<0.6>Co<0.2>Mn<0.2>)O2, and the outer layer is carbon nanotubes. The preparing method includes following steps: 1) preparing the cathode material and 2) preparing an anode material. The ternary material prepared by the preparing method is structured and uniform in morphology, large in particles, irregular in morphology, and high in conductivity. A particle gap is reduced, and compaction density and conductivity of the ternary material are improved. By a chemical vapor deposition method, the carbon nanotubes with high conductivity are deposited on the surface of the ternary material, thus further improving conductivity and rate performance of the lithium ion battery.

Description

technical field [0001] The invention relates to a preparation method of a lithium-ion battery with high power and high energy density, specifically preparing a hollow ternary material / carbon nanotube composite material through a template method. Background technique [0002] Lithium-ion batteries are a new generation of green energy storage batteries. They have outstanding advantages such as high voltage, high energy density, good cycle performance, small self-discharge, and no memory effect. They have been widely used in mobile phones, notebook computers, energy storage and other electronic products. . The positive electrode material is the key component material of the lithium-ion battery, and its performance determines the quality of the lithium-ion battery. [0003] The current positive electrode materials mainly include lithium iron phosphate, lithium cobaltate, lithium manganate and their ternary materials. Among them, lithium cobaltate is still the mainstream materia...

Claims

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Application Information

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IPC IPC(8): H01M10/058H01M4/139
CPCH01M4/139H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 丁建民
Owner JIANGSU LENENG BATTERY INC
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