Preparation method of titanium dioxide negative electrode material coated with surfactant serving as carbon source
A surfactant and titanium dioxide technology, applied in the direction of active material electrodes, negative electrodes, battery electrodes, etc., can solve the problems of insufficient contact, uneven carbon layer, etc., and achieve improved electronic conductivity, wide application value, and excellent electrochemical performance. performance effect
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[0018] Example 1:
[0019] A method for preparing a titanium dioxide anode material coated with a surface active agent as a carbon source, which utilizes the electrostatic attraction between the cationic surface active agent and the negatively charged titanium dioxide precursor titanate, and is prepared by a hydrothermal method and subsequent high-temperature calcination To remove carbon-coated titanium dioxide, the steps are as follows:
[0020] 1) Add 0.5g of cetyltrimethylammonium bromide (CTAB) into 15mL of deionized water and stir to completely dissolve; take 1.0g of tetrabutyl titanate and dissolve in a stainless steel autoclave containing 20mL of absolute ethanol, Stir until dissolved;
[0021] 2) Slowly add the CTAB-containing solution prepared above into the reaction kettle, mix well, put it in a constant temperature oven for hydrothermal reaction for 12 hours, wash the product with deionized water and absolute ethanol, centrifuge and dry to obtain titanium dioxide powder ;
Example Embodiment
[0025] Example 2:
[0026] A method for preparing a titanium dioxide anode material coated with a surface active agent as a carbon source, which utilizes the electrostatic attraction between the cationic surface active agent and the negatively charged titanium dioxide precursor titanate, and is prepared by a hydrothermal method and subsequent high-temperature calcination To remove carbon-coated titanium dioxide, the steps are as follows:
[0027] 1) Add 0.5g of cetyltrimethylammonium bromide (CTAB) into 15mL of deionized water and stir to completely dissolve; take 1.0g of tetrabutyl titanate and dissolve in a stainless steel autoclave containing 20mL of absolute ethanol, Stir until dissolved;
[0028] 2) Slowly add the CTAB-containing solution prepared above into the reaction kettle, mix well, put it in a constant temperature oven for hydrothermal reaction for 12 hours, wash the product with deionized water and absolute ethanol, centrifuge and dry to obtain titanium dioxide powder ;
Example Embodiment
[0033] Example 3:
[0034] A method for preparing a titanium dioxide anode material coated with a surface active agent as a carbon source, which utilizes the electrostatic attraction between the cationic surface active agent and the negatively charged titanium dioxide precursor titanate, and is prepared by a hydrothermal method and subsequent high-temperature calcination To remove carbon-coated titanium dioxide, the steps are as follows:
[0035] 1) Add 0.5g of cetyltrimethylammonium chloride (CTAC) into 15mL of deionized water and stir until completely dissolved; Dissolve 1.0g of tetrabutyl titanate in a stainless steel autoclave containing 20mL of absolute ethanol, Stir until dissolved;
[0036] 2) Slowly add the CTAB-containing solution prepared above into the reaction kettle, mix well, put it in a constant temperature oven for hydrothermal reaction for 12 hours, wash the product with deionized water and absolute ethanol, centrifuge and dry to obtain titanium dioxide powder ;
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