A kind of carrier and application of lithium-sulfur battery cathode material
A lithium-sulfur battery and positive electrode material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor stability of sorting technology, low value of target products, limited market capacity, etc., and achieve the suppression of dissolution loss and volume change , Conducive to crushing treatment, the effect of strengthening brittleness
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Embodiment 1
[0046] Prepare the carrier of the lithium-sulfur battery positive electrode material, the steps are as follows:
[0047] Step 1): Put the cleaned and dried polyurethane foam caulking agent in a muffle furnace, keep it warm at 280°C for 2.5 hours under static air conditions, and then crush it;
[0048] Step 2): Mix the product obtained in step 1) with KOH at a mass ratio of 1:3, add an appropriate amount of water, soak for 12 hours, and then dry at 75°C;
[0049] Step 3): Put the product obtained in step 2) in a nickel crucible, put it in a tube furnace, and under the protection of flowing nitrogen, raise the temperature from room temperature to 900°C at a heating rate of 3°C / min, keep it warm for 2h, and then Natural cooling to room temperature;
[0050] Step 4): soak the product obtained in step 3) with dilute hydrochloric acid solution, then filter, wash repeatedly with clean water, and finally dry at 80° C. to obtain the mesoporous carbon material.
[0051] figure 2 and...
Embodiment 2
[0055] Prepare the carrier of the lithium-sulfur battery positive electrode material, the steps are as follows:
[0056] Step 1): Place the cleaned and dried polyurethane foam caulking agent in a muffle furnace, keep it warm at 260°C for 2.5 hours under static air conditions, and then crush it;
[0057] Step 2): Mix the product obtained in step 1) with sodium hydroxide at a mass ratio of 1:1, add an appropriate amount of water, soak for 12 hours, and then dry at 75°C;
[0058] Step 3): Put the product obtained in step 2) in a nickel crucible, put it in a tube furnace, and under the protection of flowing nitrogen, raise the temperature from room temperature to 900°C at a heating rate of 3°C / min, keep it warm for 2h, and then Natural cooling to room temperature;
[0059] Step 4): soak the product obtained in step 3) with dilute hydrochloric acid solution, then filter, wash repeatedly with clean water, and finally dry at 80° C. to obtain the mesoporous carbon material.
[0060]...
Embodiment 3
[0062] Prepare the carrier of the lithium-sulfur battery positive electrode material, the steps are as follows:
[0063] Step 1): Place the cleaned and dried polyurethane foam caulking agent in a muffle furnace, keep it warm at 250°C for 2.5 hours under static air conditions, and then crush it;
[0064] Step 2): Mix the product obtained in step 1) with phosphoric acid at a mass ratio of 1:2, add an appropriate amount of water, soak for 12 hours, and then dry at 75°C;
[0065] Step 3): Put the product obtained in step 2) in a nickel crucible, put it in a tube furnace, and under the protection of flowing nitrogen, raise the temperature from room temperature to 700°C at a heating rate of 3°C / min, and keep it warm for 2h, then Natural cooling to room temperature;
[0066] Step 4): soak the product obtained in step 3) with dilute nitric acid solution, then filter, wash repeatedly with clean water, and finally dry at 80° C. to obtain the mesoporous carbon material.
[0067] The sp...
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