Method for preparing anode material carbon coated lithium titanate for lithium ion power batteries
A carbon-coated lithium titanate, power battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor particle size electron conductivity, poor battery rate performance, etc., to improve electronic conductivity and power. performance, the effect of improving current density and power density
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Embodiment 1
[0022] Example 1: Weigh 3.0g sucrose and 6.0g titanium dioxide respectively, place them in a 250mL beaker, add 80mL absolute ethanol, stir for 6h, and place them in an oven at 80℃ for drying; the dried sucrose and titanium dioxide mixture is Sintering in nitrogen at 600°C, holding time for 5 hours, and naturally lowering to room temperature, to obtain carbon-coated nano titanium dioxide; the mixture of lithium carbonate and lithium oxalate (the mass fraction of lithium oxalate is 1%) and titanium dioxide, according to Li :Ti=0.8:1 molar ratio for compounding, ball milling in acetone medium, drying, and sintering in nitrogen at 800°C for 10 hours to obtain carbon-coated lithium titanate powder.
Embodiment 2
[0023] Example 2: Weigh 0.6g sucrose and 2.0g titanium dioxide respectively, place them in a 250mL beaker, add 80mL absolute ethanol, stir for 6h, and place them in an oven at 80℃ for drying; the dried sucrose and titanium dioxide mixture is Sintering in nitrogen at 600°C, holding time for 5 hours, and naturally lowering to room temperature, to obtain carbon-coated nano titanium dioxide; the mixture of lithium carbonate and lithium oxalate (the mass fraction of lithium oxalate is 1%) and titanium dioxide, according to Li :Ti=0.8:1 molar ratio for compounding, ball milling in acetone medium, drying, and sintering in nitrogen at 800°C for 10 hours to obtain carbon-coated lithium titanate powder.
Embodiment 3
[0024] Example 3: Weigh 2.0g glucose and 4.0g titanium dioxide respectively, put them in a 150mL beaker, add 60mL absolute ethanol, stir for 6h, and place them in an oven at 80℃ for drying; the dried glucose and titanium dioxide mixture is Sintering in nitrogen at 600°C, holding time for 5 hours, and naturally lowering to room temperature to obtain carbon-coated nano titanium dioxide; the mixture of lithium acetate and lithium oxalate (the mass fraction of lithium oxalate is 1%) and titanium dioxide, according to Li :Ti=0.8:1 molar ratio for compounding, ball milling in acetone medium, drying, and sintering in nitrogen at 800°C for 10 hours to obtain carbon-coated lithium titanate powder.
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