Preparation method for poplar catkin based biomass carbon/sulfur composite material
A composite material, biomass carbon technology, applied in non-aqueous electrolyte batteries, electrical components, battery electrodes, etc., can solve the problems of unsatisfactory electrochemical performance, low capacity of lithium-sulfur batteries, and low sulfur adsorption, and achieve improved Electrochemical performance, good electrochemical performance, low cost effect
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[0021] Example 1
[0022] (1) collect a certain amount of poplar flakes, wash the collected poplar flakes with deionized water 12 times, and then place it in a drying oven at 90 degrees and dry for 12h to obtain pretreated poplar flocculents;
[0023] (2) immerse the pretreated poplar flocculate in 1 mol / L potassium hydroxide solution and fully stir for 3h, wherein the mass ratio is the pretreated poplar flocculent: KOH=1:2 contained in the solution, and then the obtained The substance was evaporated in vacuum, then fully dried in a drying oven, and dried at a drying temperature of 70 °C for 12 hours;
[0024] (3) heating the dried alkalized poplar flocculent to 700 °C for 1 h at a heating rate of 5 °C / min under an inert atmosphere in a tube furnace, and performing high-temperature heat treatment to obtain poplar flocculent powder;
[0025] (4) Alternately washing the heat-treated poplar flocculent powder with 0.1 mol / L dilute hydrochloric acid solution and water to neutralit...
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[0033] Example 2
[0034] (1) collect a certain amount of poplar flakes, wash the collected poplar flocculents with deionized water 15 times, then place it in a drying oven at 60 degrees and dry for 12h to obtain pretreated poplar flocculents;
[0035](2) immersing the pretreated poplar flocculent in 1mol / L potassium hydroxide solution and fully stirring for 5h, wherein the mass ratio is to obtain the pretreated poplar flocculent: KOH=1:3 contained in the solution, and then the obtained The material was evaporated under vacuum conditions, and then fully dried in a drying oven, and dried at a drying temperature of 90 °C for 12 hours;
[0036] (3) heating the dried alkalized poplar flocculent to 900 °C for 1.5 h at a heating rate of 5 °C / min under an inert atmosphere in a tube furnace, and performing high-temperature heat treatment to obtain poplar flocculent powder;
[0037] (4) Alternately washing the heat-treated poplar flocculent powder with 0.5mol / L dilute hydrochloric aci...
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