Iron and nickel-doped activated carbon-sulfur material and preparation method and application thereof
A technology of activated carbon and sulfur cathode material, applied in electrical components, battery electrodes, non-aqueous electrolyte batteries, etc., can solve the problems of difficult control of the reaction process, high cost of metal alkoxides, low specific capacity, etc., and improve the electrochemical cycle performance. , The effect of inhibiting negative electrode corrosion and high production efficiency
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[0027] A preparation method of iron, nickel doped activated carbon-sulfur cathode material, comprising the steps of:
[0028] Step 1) Prepare iron and nickel doped activated carbon powder by hydrothermal method, and measure 8 mL 0.1 mol L respectively -1 Ni(NO 3 ) 2 , Fe(NO 3 ) 3 Solution and weigh 0.2 g of activated carbon into a beaker, then add 50 mL of N, N-dimethylformamide (DMF), ultrasonically disperse for 30 minutes to obtain a uniformly mixed solution, transfer it to a stainless steel reaction kettle, and heat at 160 °C Under the conditions, react for 20 h, cool to room temperature, wash with distilled water and organic solvent, and then dry to obtain iron and nickel doped activated carbon powder;
[0029] Step 2) The unactivated iron and nickel doped activated carbon-sulfur material was prepared by liquid phase in situ compounding method. 0.6 g of sublimed sulfur was dissolved in 200 mL of sodium sulfide aqueous solution, stirred thoroughly and ultrasonicated to...
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