Preparation method of novel ternary positive electrode material, positive electrode material, lithium battery prepared from positive electrode material and application of lithium battery

A cathode material, lithium battery technology, applied in the direction of lithium storage battery, positive electrode, secondary battery, etc., can solve the problems of complex process, unsuitable for industrial production, high cost, etc., to prevent dissolution, improve electronic conductivity and lithium ion Ion transport ability, sufficient contact effect

Pending Publication Date: 2022-03-15
WANHUA CHEM (SICHUAN) CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process is relatively complicated and the cost is rel

Method used

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  • Preparation method of novel ternary positive electrode material, positive electrode material, lithium battery prepared from positive electrode material and application of lithium battery
  • Preparation method of novel ternary positive electrode material, positive electrode material, lithium battery prepared from positive electrode material and application of lithium battery
  • Preparation method of novel ternary positive electrode material, positive electrode material, lithium battery prepared from positive electrode material and application of lithium battery

Examples

Experimental program
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Example Embodiment

[0029] A new type of three-dimensional positive electrode material, including the following steps:

[0030] Step A) mix the nickel-cobalt precursor, lithium source, and dopant M oxide, sintered at 500-1000 ° C to obtain a positive electrode material;

[0031] Step b) Penage the positive electrode material and the carbon oxide black, N, N-dimethyl amide (DMF) and high melting point metal carbonyl compound N (CO) t Mixing, the suspension was obtained, and the ultrasound was evenly uniform; stirring was heated in the oil bath pan, then dried after filtration to obtain a doped carbon coated three-dimensional positive material;

[0032] Among them, the median diameter D50 of the nickel manganese precursor in step a) is 4-8 μm, including, but not limited to, 4 μm, 4.5 μm, 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, Nickel cobalt manganese precursor, for example, Ni a CO b Mn c (OH) 2 Among them, 0.6 ≤ A ≤ 0.9, 0.05 ≤ B ≤ 0.2, 0.05 ≤ C ≤ 0.3. The nickel cobalt precursor can be a prec...

Example Embodiment

[0048] Example 1:

[0049] S1: Use the particle size D50 in 8 μm Ni 0.83 CO 0.12 Mn 0.05 (OH) 2 Precurable body and LiOH h 2 O and 1500PPM additive Zro 2 Mixed, and in the muffle furnace to heat the oxygen heating to 800 ° C, the constant temperature is sintered for 10 h, then cool to room temperature to get Lini 0.83 CO 0.12 Mn 0.05 ZR 0.01 O 2 .

[0050] S2: 30g Lini 0.83 CO 0.12 Mn 0.05 ZR 0.01 O 2 , 1.07g W (CO) 6 And 1.2 g of carbon oxide black dissolved in DMF of 28.8 g (30.48 mL), wherein the positive electrode material and the total solution mass ratio of 50% by weight, the mass of corrupt carbon black and total solution ratio is 2% by weight, W (CO) 6 The concentration was 0.1 mol / L. Ultrasound treatment 1 h, the ultrasonic frequency is 200 Hz, resulting in a mixed liquid.

[0051] S3: Transferring the mixed liquid to the pressure-resistant bottle, heating into the oil bath pan to 200 ° C, magnetic force for 10 h. After cooling to room temperature; then filtered the sol...

Example Embodiment

[0052] Example 2:

[0053] S1: Use the particle size D50 in 5 μm Ni 0.6 CO 0.1 Mn 0.3 (OH) 2 Precurable body and LiOH h 2 O and 1200PPM additive Al 2 O 3 Mixed, and in the muffle furnace to heat the oxygen heating to 880 ° C, the constant temperature is sintered for 10 h, then cool to room temperature to get Lini 0.6 CO 0.1 Mn 0.3 Al 0.01 O 2 .

[0054] S2: 30g Lini 0.6 CO 0.1 Mn 0.3 Al 0.01 O 2 , 1.61G W (CO) 6 And 1.2 g of carbon oxide black dissolved in DMF of 28.8 g (30.48 mL), wherein the positive electrode material and the total solution mass ratio of 50% by weight, the mass of corrupt carbon black and total solution ratio is 2% by weight, W (CO) 6 The concentration was 0.15 mol / L. Ultrasonic treatment 3H, the ultrasonic frequency is 300 Hz, resulting in a mixed liquid.

[0055] S3: Transferring the mixed liquid to the pressure-resistant bottle and heated to 180 ° C in the oil bath pan, and the magnetic force was stirred for 10 h. Cool to room temperature. After filtration...

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Abstract

The invention discloses a preparation method of a novel ternary positive electrode material, a positive electrode material, a lithium battery prepared from the positive electrode material and application of the positive electrode material, and the preparation method comprises the following steps: 1) mixing a nickel-cobalt-manganese precursor, a lithium source and a doping additive M, and sintering to obtain the positive electrode material; and 2) mixing the positive electrode material with oxidized carbon black and a high-melting-point metal carbonyl compound N (CO) t, respectively dissolving the mixture in N, N-dimethylformamide to obtain turbid liquid, mixing the turbid liquid after uniform ultrasonic treatment, then heating and stirring the turbid liquid in an oil bath pan, and then filtering and drying the turbid liquid to obtain the nanoscale carbide coated ternary positive electrode material. According to the nanoscale carbide-coated ternary positive electrode material disclosed by the invention, the wetting angle between a positive electrode plate and an electrolyte can be reduced under the capillary action of the nanoscale carbide, so that the positive electrode plate is more fully contacted with the electrolyte, and the electronic conductivity and the lithium ion transmission capability of the electrode plate are improved.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion battery materials, in particular, relates to a preparation method of a novel ternary positive electrode material, the positive electrode material and the lithium battery made therefrom and applications thereof. Background technique [0002] Climate change, energy and environmental issues are long-term problems faced by human society. The solutions to the three major issues of greenhouse gas emissions, energy consumption and exhaust emissions in the field of transportation directly affect whether the common problems of mankind can be effectively solved. At present, the governments, organizations, automakers and their upstream and downstream of major countries around the world are acting together to accelerate the upgrading of the industrialization structure of the global auto industry and the strategic transformation of the electrification of the power system. Lithium-ion batteries are the cor...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/505H01M4/525H01M4/62H01M10/052H01M10/0525C01G53/00C01B32/15
CPCH01M4/366H01M4/505H01M4/525H01M4/628H01M4/625H01M10/052H01M10/0525C01G53/44C01B32/15H01M2004/021H01M2004/028C01P2004/03C01P2006/40Y02E60/10
Inventor 涂文哲邵洪源戴足典
Owner WANHUA CHEM (SICHUAN) CO LTD
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