Lithium cell negative pole material and preparation thereof
A negative electrode material and lithium battery technology, applied in electrode manufacturing, battery electrodes, circuits, etc., can solve the problem of low space utilization and achieve the effect of controllable layers
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[0020] Example 1
[0021] 1) Add 60 ml of ethylene glycol, 0.02 g of PVP (molecular weight 30,000) and 1 g of cobalt acetate into 100 ml of PTFE liner, stir to dissolve, put it in a hydrothermal kettle, and react at 180°C for 12 After hours, wash the resulting solution with deionized water and ethanol three times each to obtain precursor powder;
[0022] 2) The precursor powder is calcined at 350° C. for 0.5 hours to obtain single-layer cobalt tetroxide hollow microspheres, with an average particle size of the outermost layer of 1.5 μm.
Example Embodiment
[0023] Example 2
[0024] 1) Add 80 ml of ethylene glycol, 0.15 g of PVP, and 1 g of cobalt oxalate to 100 ml of polytetrafluoroethylene lining. After stirring to dissolve, place them in a hydrothermal kettle and react at 200°C for 24 hours. The resulting solution Wash with deionized water and ethanol three times in sequence to obtain precursor powder;
[0025] 2) The precursor powder is calcined at 450° C. for 3 hours to obtain two layers of cobalt tetroxide hollow microspheres, and the average particle size of the outermost layer is 2 μm.
Example Embodiment
[0026] Example 3
[0027] 1) Add 70 ml of ethylene glycol, 0.30 g of PVP (molecular weight 3000), and 1 g of cobalt chloride to 100 ml of PTFE lining, stir to dissolve, put them in a hydrothermal kettle, and react at 190°C for 20 After hours, wash the resulting solution with deionized water and ethanol three times each to obtain precursor powder;
[0028] 2) The precursor powder is calcined at 400° C. for 2 hours to obtain three layers of cobalt tetroxide hollow microspheres, and the average particle size of the outermost layer is 3 μm.
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