A kind of magnesium aluminum pentafluoride/nitrogen-doped carbon lithium-sulfur battery cathode material and preparation method thereof
A positive electrode material, magnesium aluminum pentafluoride technology, applied in the field of new energy materials, can solve the problems of poor conductivity of sulfur and lithium-sulfur products, slow liquid-solid phase transition kinetics, cumbersome process, etc., to improve cycle stability and inhibit shuttle effect , The effect of simple preparation process
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Embodiment 1
[0048] (1) Treatment of concavestone stone
[0049] Natural concave rock was screened with 200 mesh sieves, and then the 6 g of the groovestone was placed in a hydrochloric acid having a concentration of 4 mol / L in a hydrochloric acid at 90 ° C. The product was then filtered and filtered, and the product obtained was washed to neutral, and then the resulting sample was placed in a vacuum drying tank for 12 h.
[0050] (2) Concave stone rubbing nitrogen blend
[0051] It is weighed with 2 g of modified concave rods, 1.5 g glucose and 0.9 g of ammonium chloride in 100 ml beaker, and 40 ml of deionized water was added and stirred for 24 h, then at an 80 ° C water bath until the moisture was evaporated. The above precursor was placed in an argon atmosphere in a tubular furnace, and the heating rate of 4 ° C / min, 600 ° C was calcined for 3 h to obtain a nitrogen doped concave ruthenium composite.
[0052] (3) HF treatment
[0053] The above obtained nitrogen doped packet concave ac...
Embodiment 2
[0059] (1) Treatment of concavestone stone
[0060] Naturally concave rocks were screened with 200 mesh sieves, and then the 6 g of the groove was placed in a hydrochloric acid having a concentration of 6 mol / L in a hydrochloric acid at 70 ° C for 4 h. The product was then filtered and filtered, and the product obtained was washed to neutral, and then the resulting sample was placed in a vacuum drying tank for 12 h.
[0061] (2) Concave stone rubbing nitrogen blend
[0062] The above 2 g of modified concave rods, 1.5 g glucose and 1.35 g of ammonium chloride were added to 100 ml beaker, and 40 ml of deionized water was added and stirred for 24 h, then at an 80 ° C water bath until the moisture was volatilized, and the precursor was obtained. The above precursor was placed in an argon atmosphere in a tubular furnace, and the temperature of the temperature was 6 ° C / min, and 7 h was calcined at 900 ° C for 7 hours to obtain a nitrogen blend curve stone composite.
[0063] (3) HF...
Embodiment 3
[0072] (1) Treatment of concavestone stone
[0073] Naturally concave rock was screened with a 200 mesh sieve, and then the 6 g of the groove was placed in a hydrochloric acid having a concentration of 6 mol / L in a hydrochloric acid at 80 ° C for 3 h. The product was then filtered and filtered, and the product obtained was washed to neutral, and then the resulting sample was placed in a vacuum drying tank for 12 h.
[0074] (2) Concave stone rubbing nitrogen blend
[0075] The above 2 g of modified reforisure stone, 2 g glucose and 1.2 g of ammonium chloride were added to a 100 ml beaker, and 40 ml of deionized water was added and stirred for 24 h, then at an 80 ° C water bath until the moisture was volatilized, and the precursor was obtained. The above precursor was placed in an argon atmosphere in a tubular furnace, and the heating rate of 5 ° C / min, 800 ° C was calcined for 5 h to obtain a nitrogen blend cupping.
[0076] (3) HF processing
[0077] The above-mentioned nitro...
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