A polythiophene-derived sulfur-doped carbon sodium-ion battery anode material
A sodium ion battery and negative electrode material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of unfriendly environment, many by-products, complicated preparation process, etc., achieve good electrochemical performance and improve electronic conductivity and the effect of ionic conductivity
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Embodiment 1
[0023] Example 1: Disperse 100 uL of thiophene monomer into 25 mL of chloroform, under the action of ultrasound, ultrasonic 20min, to form a stable dispersion A; 0.81g initiator FeCl 3 Disperse into 25 mL of chloroform (initiator FeCl 3 The ratio of the amount of substance to the amount of thiophene monomer is 3:1), under the action of ultrasound, ultrasonic 20 min, forming a stable dispersion B; transfer the dispersion A and dispersion B to a round bottom flask, at 65 ° C After 4 h of reflux reaction, 50 mL of methanol solution was added, and the reflux reaction was continued for 48 h to obtain a reddish brown mixed turbid liquid; the obtained reddish brown mixed turbid liquid was centrifuged and then dried at 70°C to obtain a solid product; finally, the obtained solid product was calcined at 600 °C for 3 h under an argon protective atmosphere to obtain a sulfur-doped carbon composite anode material. Sulfur-doped carbon composite anode material at 100 mA g -1 The initial di...
Embodiment 2
[0025] Example 2: Disperse 200 uL of thiophene monomer into 50 mL of chloroform, and ultrasonicate for 30 min under the action of ultrasound to form a stable dispersion A; 1.5 g of initiator FeCl 3 Disperse in 50 mL of chloroform (initiator FeCl 3 The ratio of the amount of substance to the amount of thiophene monomer is 4:1), under the action of ultrasound, ultrasonic 20 min, forming a stable dispersion B; transfer the dispersion A and dispersion B to a round bottom flask, at 65 ° C After 4 h of reflux reaction, 200 mL of methanol solution was added, and the reflux reaction was continued for 24 h to obtain a reddish brown mixed turbid liquid; the obtained reddish brown mixed turbid liquid was centrifuged and then dried at 80°C to obtain a solid product; finally, the obtained solid product was calcined at 700 °C for 4 h under an argon protective atmosphere to obtain a sulfur-doped carbon composite anode material.
[0026] figure 2 is the SEM spectrum of the sulfur-doped car...
Embodiment 3
[0028] Example 3: Disperse 300 uL of thiophene monomer into 75 mL of chloroform, under the action of ultrasound, ultrasonic for 40 minutes to form a stable dispersion A; 2.43 g of initiator FeCl 3 Disperse into 75 mL of chloroform (initiator FeCl 3 The ratio of the amount of substance to the amount of thiophene monomer is 4:1), under the action of ultrasound, ultrasonic 20 min, forming a stable dispersion B; transfer the dispersion A and dispersion B to a round bottom flask, at 80 ℃ After 4 h of reflux reaction, 450 mL of methanol solution was added, and the reflux reaction was continued for 72 h to obtain a reddish brown mixed turbid liquid; the obtained reddish brown mixed turbid liquid was centrifuged and then dried at 80°C to obtain a solid product; finally, the obtained solid product was calcined at 800 °C for 6 h under an argon protective atmosphere to obtain a sulfur-doped carbon composite anode material. The sulfur-doped carbon composite anode material maintained a ca...
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