High-voltage high-magnification lithium ion battery
A lithium-ion battery, high-rate technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as failure to meet high-current discharge requirements, battery performance attenuation, poor conductivity, etc., achieve good solubility, reduce Effect of dissolution and improvement of electrical conductivity
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Embodiment 1
[0027] Preparation of modified lithium cobaltate:
[0028] Step 1, prepare cobalt chloride and chromium sulfate with deionized water into a mixed solution with a total metal ion concentration of 1.0 mol / L, then adjust the pH value of the mixed solution to 11 with sodium hydroxide solution, centrifuge after stirring for 6 hours , to obtain a precipitate; the precipitate was first ultrasonically washed with absolute ethanol, then ultrasonically washed with deionized water to neutrality, and the precipitate after ultrasonically washed with deionized water was dried at 80°C for 12h to obtain a metal ion doped precursor Bulk Cr 0.1 co 0.9 (OH) 2 ; Then the metal ion doping precursor Cr 0.1 co 0.9 (OH) 2 It is mixed with lithium carbonate according to the molar ratio of Li:Co=1.05:1, and calcined at 600°C for 9 hours to obtain metal ion-doped lithium cobaltate Li(Cr 0.1 co 0.9 )O 2 ;
[0029] Step 2, organic carbon source urea and metal ion described in step 1 are doped lit...
Embodiment 2
[0032] Preparation of modified lithium cobaltate:
[0033] Step 1. Prepare cobalt chloride and aluminum sulfate with deionized water to form a mixed solution with a total concentration of metal ions of 1.0 mol / L, then adjust the pH value of the mixed solution to 9 with sodium hydroxide solution, and centrifuge after stirring for 4 hours , to obtain a precipitate; the precipitate was first ultrasonically washed with absolute ethanol, then ultrasonically washed with deionized water to neutrality, and the precipitate after ultrasonic washing with deionized water was dried at 70 ° C for 10 h to obtain a metal ion doped precursor Bulk Al 0.05 co 0.95 (OH) 2 ; Then the metal ion doping precursor Al 0.05 co 0.95 (OH) 2 It is mixed with lithium carbonate according to the molar ratio of Li:Co=1.08:1, and calcined at 800°C for 6 hours to obtain metal ion-doped lithium cobaltate Li(Al 0.05 co 0.95 )O 2 ;
[0034] Step 2, the organic carbon source glucose and metal ions described...
Embodiment 3
[0037] Preparation of modified lithium cobaltate:
[0038] Step 1. Prepare cobalt chloride and nickel sulfate with deionized water to form a mixed solution with a total metal ion concentration of 1.5 mol / L, then adjust the pH value of the mixed solution to 12 with sodium hydroxide solution, and centrifuge after stirring for 2 hours , to obtain a precipitate; the precipitate was first ultrasonically washed with absolute ethanol, then ultrasonically washed with deionized water to neutrality, and the precipitate after ultrasonic washing with deionized water was dried at 70 ° C for 10 h to obtain a metal ion doped precursor Bulk Ni 0.0001 co 0.9999 (OH) 2 ; Then the metal ion doped precursor Ni 0.0001 co 0.9999 (OH) 2 It is mixed with lithium carbonate according to the molar ratio of Li:Co=1.1:1, and calcined at 1000°C for 5 hours to obtain metal ion-doped lithium cobaltate Li(Ni 0.0001 co 0.9999 )O 2 ;
[0039] Step 2, organic carbon source urea and metal ion described i...
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