Processing method for improving conductivity of high-nickel ternary cathode material of lithium battery
A positive electrode material and processing method technology, applied in the direction of battery electrodes, electrical components, secondary batteries, etc., can solve the problems of poor electrical conductivity and large internal resistance, and achieve the effect of improving electrical conductivity and solving weak adhesion
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Embodiment 1
[0032] The processing process is:
[0033] (1) Add nickel foam to an ethanol solution containing cobalt acetate and manganese acetate, then mix and stir, and fully absorb to obtain the product after adsorption; wherein, 35 parts by weight of nickel foam, 11 parts by weight of cobalt acetate, and 11 parts by weight of manganese acetate , 43 parts by weight of ethanol;
[0034] (2) Mix the adsorbed product obtained in step (1) with a strong oxidizing agent and a solid base, then pre-calcine, add a lithium source after the material is completely solidified, then sinter at a high temperature, and cool after the end to obtain a three-dimensional network High-nickel ternary cathode material; strong oxidant is potassium permanganate; solid base is magnesium oxide; lithium source is lithium carbonate; The temperature of the first stage is 660°C, the time is 6.5h, the temperature of the second stage is 930°C, and the time is 6.5h; among them, 59 parts by weight of the product after ad...
Embodiment 2
[0040] The processing process is:
[0041](1) Add nickel foam to the ethanol solution containing cobalt acetate and manganese acetate, then mix and stir, fully adsorb, and obtain the product after adsorption; wherein, 33 parts by weight of nickel foam, 11 parts by weight of cobalt acetate, and 11 parts by weight of manganese acetate , 45 parts by weight of ethanol;
[0042] (2) Mix the adsorbed product obtained in step (1) with a strong oxidizing agent and a solid base, then pre-calcine, add a lithium source after the material is completely solidified, then sinter at a high temperature, and cool after the end to obtain a three-dimensional network High-nickel ternary cathode material; strong oxidant is persulfate; solid base is alumina; lithium source is lithium hydroxide; The temperature of the first stage is 630°C, the time is 7h, the temperature of the second stage is 910°C, and the time is 7h; among them, 62 parts by weight of the product after adsorption, 9 parts by weigh...
Embodiment 3
[0048] The processing process is:
[0049] (1) Add nickel foam to the ethanol solution containing cobalt acetate and manganese acetate, then mix and stir, fully adsorb, and obtain the product after adsorption; wherein, 35 parts by weight of nickel foam, 13 parts by weight of cobalt acetate, and 12 parts by weight of manganese acetate , 40 parts by weight of ethanol;
[0050] (2) Mix the adsorbed product obtained in step (1) with a strong oxidizing agent and a solid base, then pre-calcine, add a lithium source after the material is completely solidified, then sinter at a high temperature, and cool after the end to obtain a three-dimensional network High-nickel ternary cathode material; strong oxidant is chlorate; solid base is calcium oxide; lithium source is lithium nitrate; The temperature is 680°C, the time is 6h, the temperature of the second stage is 940°C, and the time is 6h; wherein, 53 parts by weight of the product after adsorption, 11 parts by weight of strong oxidan...
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