Abstract
Currently, the anode of sodium-ion battery is mainly made of carbon material, and the carbon black made of acetylene has the advantages of low cost, high purity and simple process, etc. The particle size of carbon black has a great influence on the storage capacity of sodium ions, in this study, carbon black particles with different particle sizes were prepared by chemical vapour deposition method by changing the temperature and gas flow rate, and the effects of the temperature and the gas flow rate on the size of the carbon black were investigated, and the effect of the particle size of carbon black on the performance of the battery was studied. The effect of temperature and gas flow rate on the particle size of carbon black was investigated, and then the effect of the particle size of carbon black on the battery performance was studied. The larger the gas flow rate of acetylene, the smaller the particle size of carbon black generated. The carbon black CB-3 generated by holding at 900 ℃ and an acetylene flow rate of 300 mL/min for 30 min kept the capacity of 112.36 mAh/g after 180 cycles, and the specific capacity of the first discharge was 414.66 mAh/g, and the reversible specific capacity at 2 A/g still had 92.12 mA/g. This work helps to provide new ideas for research in enhancing the electrochemical performance of sodium-ion battery materials.