Preparation method for lithium cobalt oxide silver-doped composite positive electrode material
A composite cathode material, lithium cobalt oxide technology, applied in the field of lithium ion batteries, can solve the problems of low rate discharge performance and electrical conductivity, and achieve the effects of low cost, improved service life, and improved discharge rate
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example 1
[0018] First, put 15 mL of silver nitrate with a mass fraction of 2% in a test tube, shake the test tube, and slowly add ammonia water with a mass fraction of 3% to it while shaking until the silver nitrate is completely dissolved in the ammonia water, then stop the dripping After the dropwise addition of ammonia water is completed, formaldehyde with 15% silver nitrate mass is slowly passed into it, and the test tube is placed in a water bath for heating at a temperature of 70°C. After reacting for 2 hours, filter it to obtain the filtrate metallic silver , and carry out drying and dehydration to it to obtain dry metal silver for subsequent use; then take 40g of lithium hydroxide and 80g of cobalt nitrate and mix it in deionized water with 1 times the total mass of the mixture, and stir it until it dissolves completely In deionized water, add aqua regia with 40% mass fraction of the mixture to it, stir and heat up to 50°C, and react for 45min. The aqua regia is composed of 95% ...
example 2
[0020] First, put 10 mL of silver nitrate with a mass fraction of 2% in a test tube, shake the test tube, and slowly add ammonia water with a mass fraction of 3% to it while shaking until the silver nitrate is completely dissolved in the ammonia water, and then stop the dripping Ammonia water, after the dropwise addition is completed, then slowly pass into it formaldehyde with 10% silver nitrate mass, and place the test tube in a water bath for heating at a temperature of 60°C. After reacting for 1 hour, filter it to obtain the filtrate metallic silver , and carry out drying and dehydration to it to obtain dry metallic silver for subsequent use; then take 30g of lithium hydroxide and 70g of cobalt nitrate and mix them in deionized water with 1 times the total mass of the mixture, and stir it until it dissolves completely In deionized water, add aqua regia with 30% mass fraction of the mixture to it, stir and heat up to 40°C, and react for 45min. The aqua regia is composed of 95...
example 3
[0022]First, put 12 mL of silver nitrate with a mass fraction of 2% in a test tube, shake the test tube, and slowly add ammonia water with a mass fraction of 3% to it while shaking until the silver nitrate is completely dissolved in the ammonia water, and then stop the dripping After the dropwise addition of ammonia water is completed, formaldehyde with 12% silver nitrate mass is slowly passed into it, and the test tube is placed in a water bath for heating at a temperature of 65°C. After reacting for 1 hour, filter it to obtain the filtrate metallic silver , and carry out drying and dehydration to it to obtain dry metallic silver for subsequent use; then take 35g of lithium hydroxide and 75g of cobalt nitrate, mix them in deionized water with 1 times the total mass of the mixture, and stir it until it dissolves completely In deionized water, add aqua regia with 30% mass fraction of the mixture to it, stir and heat up to 45°C, and react for 42min. The aqua regia is composed of ...
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