Porous vanadium pentoxide/nickel cobalt lithium manganate composite cathode material
A composite positive electrode material, nickel-cobalt lithium manganese oxide technology, applied in the direction of positive electrodes, battery electrodes, secondary batteries, etc., can solve the problems of poor cycle performance, fluorine ion environmental pollution, and the inability to further improve the cycle performance of positive electrode materials. The effect of low cost, simple preparation process and excellent rate performance
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Embodiment 1
[0059] The porous vanadium pentoxide / nickel cobalt lithium manganate composite positive electrode material V 2 o 5 / LiNi 0.5 co 0.2 mn 0.3 o 2 Mainly made by:
[0060] (1) Add 0.1764 g of polyether F127 into 50 mL of a mixed solution of water and ethylene glycol (volume ratio 1:1), stir and dissolve for 4 h at room temperature with a stirring speed of 300 r / min to obtain 50 mL of template organic solution;
[0061] (2) Add 25 mmol nickel acetate tetrahydrate, 10 mmol cobalt acetate tetrahydrate, 15 mmol manganese acetate tetrahydrate and 100 mmol urea to the 50 mL template organic solution obtained in step (1). min, stir and dissolve for 1.5 h to obtain a mixed solution;
[0062] (3) Transfer the mixed solution obtained in step (2) to the lining of a 100 mL polytetrafluoroethylene reactor, place it in a stainless steel reactor, seal it, and conduct a hydrothermal reaction at 160 °C for 16 h, then cool naturally to At room temperature, filter, wash, and dry to obtain th...
Embodiment 2
[0075] The porous vanadium pentoxide / nickel cobalt lithium manganate composite positive electrode material V 2 o 5 / LiNi 0.6 co 0.2 mn 0.2 o 2 Mainly made by:
[0076] (1) Add 0.1770 g of polyether F127 into 30 mL of a mixed solution of water and ethylene glycol (volume ratio 2:1), stir and dissolve for 5 h at room temperature at a stirring speed of 250 r / min to obtain 30 mL of template organic solution;
[0077] (2) Add 30 mmol nickel acetate tetrahydrate, 10 mmol anhydrous cobalt acetate, 10 mmol anhydrous manganese acetate and 100 mmol urea to the 30 mL template organic solution obtained in step (1). / min, stirred and dissolved for 2h to obtain a mixed solution;
[0078] (3) Transfer the mixed solution obtained in step (2) to the lining of a 100 mL polytetrafluoroethylene reactor, place it in a stainless steel reactor, seal it, and conduct a hydrothermal reaction at 140 °C for 18 h, then cool naturally to At room temperature, filter, wash, and dry to obtain the prec...
Embodiment 3
[0091] The porous vanadium pentoxide / nickel cobalt lithium manganate composite positive electrode material V 2 o 5 / LiNi 0.8 co 0.1 mn 0.1 o 2 Mainly made by:
[0092] (1) Add 0.1775 g of polyether P123 into 70 mL of a mixed solution of water and glycerol (volume ratio 0.5:1), stir and dissolve for 6 h at room temperature at a stirring speed of 400 r / min to obtain 70 mL of template organic solution;
[0093] (2) Add 40 mmol nickel acetate tetrahydrate, 5 mmol cobalt acetate dihydrate, 5 mmol manganese acetate dihydrate and 100 mmol urea to 70 mL template organic solution obtained in step (1), and stir at room temperature at 500 r / min, stirred and dissolved for 1h to obtain a mixed solution;
[0094] (3) Transfer the mixed solution obtained in step (2) to the lining of a 100 mL polytetrafluoroethylene reactor, place it in a stainless steel reactor, seal it, and conduct a hydrothermal reaction at 180 °C for 14 h, then cool naturally to At room temperature, filter, wash,...
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