Cathode material for lithium-sulfur battery and preparation and application
A positive electrode material, lithium-sulfur battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as lithium ion transmission inhibition
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[0028] Example 1
[0029] 0.05molS elemental substance, 0.05molNa 2 S, 0.01mol PVP was put into 50ml deionized water, ultrasonically dispersed for 2h, the pH value was controlled to 7, then 0.05mol zinc acetate was slowly added, and the reaction was carried out at 30°C for 10h. After the reactant was cooled naturally, washed 3 times with ethanol and deionized water alternately, suction filtered, and then dried at a constant temperature of 50 °C for 24 h to obtain the target product. Battery 0.05C charge-discharge cycle performance see figure 1 , the capacity of the battery still reaches 500mAh / g after 450 cycles, and the capacity retention rate is 62.5%.
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[0030] Example 2
[0031] 0.05molS element, 0.05mol / LNa 2 S. Put 0.05mol Nafion into 50ml deionized water, disperse by ultrasonic for 2h, control the pH value to 6, then add 0.1mol zinc acetate, transfer the mixture into an autoclave and seal, and react at 60°C for 10h. After the reactant was cooled naturally, washed 3 times with ethanol and deionized water alternately, suction filtered, and then dried at a constant temperature of 50 °C for 24 h to obtain the target product. Battery 0.05C charge-discharge cycle performance see figure 2 , the capacity of the battery still reaches 400mAh / g after 300 cycles, and the capacity retention rate is 58%.
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