Nickel-sulfur positive electrode of a lithium-sulfur battery and preparation method thereof
A lithium-sulfur battery, nickel-sulfur technology, applied in the field of nickel-sulfur positive electrode and its preparation, can solve the problems of poor cycle stability, reduced use cost, low conductivity, etc., and achieves the effects of good conductivity, simple process and good reversibility
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Embodiment 1
[0034] Set the areal density to 500g / m 2 The foamed nickel metal sheet is placed under the cutting machine to cut the foamed nickel metal sheet. Dissolve 15.8 grams of sodium thiosulfate in 70 milliliters of deionized water, ultrasonically oscillate for 5 minutes, then add foamed nickel metal sheets, and continue ultrasonically oscillating for 10 minutes. Take 15 ml of 37% hydrochloric acid solution and add it to 15 ml of deionized water, ultrasonically oscillate for 5 minutes, then add dropwise to the prepared sodium thiosulfate solution soaked in foamed nickel metal sheet, continue ultrasonically oscillating for 5 minutes to obtain sulfur-coated Nickel foam. Place sulfur-coated nickel foam in deionized water for 5 minutes and take it out, put it in a quartz container and move it into a vacuum drying oven, heat it at 60°C for 10 hours, then heat it up to 110°C for 1 hour, and take it out after cooling down to room temperature , that is, a nickel-sulfur cathode.
[0035] f...
Embodiment 2
[0038] Set the areal density to 350g / m 2The foamed nickel metal sheet is placed under the cutting machine to cut the foamed nickel metal sheet. Dissolve 15.8 grams of sodium thiosulfate in 70 milliliters of deionized water, ultrasonically oscillate for 5 minutes, then add foamed nickel metal sheets, and continue ultrasonically oscillating for 10 minutes. Take 15 ml of 37% hydrochloric acid solution and add it to 15 ml of deionized water, ultrasonically oscillate for 5 minutes, then add dropwise to the prepared sodium thiosulfate solution soaked in foamed nickel metal sheet, continue ultrasonically oscillating for 5 minutes to obtain sulfur-coated Nickel foam. Put the sulfur-coated nickel foam sheet in deionized water for 7 minutes and take it out after ultrasonic cleaning, put it in a quartz container and move it into a vacuum drying oven, first keep it warm at 60°C for 10 hours, then raise the temperature to 110°C and keep it for 2 hours, then take it out after cooling down ...
Embodiment 3
[0041] Set the areal density to 350g / m 2 The foamed nickel metal sheet is placed under the cutting machine to cut the foamed nickel metal sheet. Take 8 grams of sodium thiosulfate and dissolve it in 70 ml of deionized water, ultrasonically oscillate for 5 minutes, add foamed nickel metal sheet, and continue ultrasonically oscillating for 10 minutes. Take 10 ml of 37% hydrochloric acid solution and add it to 20 ml of deionized water, ultrasonically oscillate for 5 minutes, then add dropwise to the prepared sodium thiosulfate solution soaked in foamed nickel metal sheet, continue ultrasonically oscillating for 5 minutes to obtain sulfur-coated Nickel foam. Put sulfur-coated nickel foam in deionized water for 5 minutes and take it out, put it in a quartz container and move it into a vacuum drying oven, first keep it warm at 60°C for 10 hours, then raise the temperature to 100°C and keep it for 4 hours, then take it out after cooling down to room temperature , that is, a nickel-...
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Abstract
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