An onion-like carbon/carbon nanofibre composite film was prepared by electrospinning. Its precursor application, and the effect of the amount of onion-like carbon additive and carbonization temperature on the physical and chemical properties of onion-like carbon/carbon nanofibre composite film was investigated. The results showed the non-woven fabric obtained by electrospinning solution reagent and the non-woven fabric after pre oxidation can be used to prepare facial mask and adsorb methylene blue (the adsorption rate reaches 83.1%) respectively. The conductivity of the onion-like carbon nanofibre composite film increased with the onion-like carbon content. The electrical conductivity of the composite film with an onion-like carbon content of 20 wt% (1.76 S/cm) was 1.5 times that of pure carbon nanofibres (1.12 S/cm). As the carbonisation temperature increased, the conductivity also increased. The prepared onion-like carbon/carbon nanofibre composite film exhibited an excellent electrothermal conversion performance. When the voltage was 30 V, and the current was 2.79 A, the surface temperature of the onion-like carbon/carbon nanofibre composite film (the carbonisation temperature was 1100 °C, and the content of onion-like carbon was 20 wt%) was as high as 588.4 ℃.

通过静电纺丝制备了洋葱状碳/碳纳米纤维复合膜。研究了其前驱体的应用，以及洋葱状碳添加剂的用量和碳化温度对洋葱状碳/碳纳米纤维复合膜物理化学性能的影响。结果表明，静电纺丝溶液试剂得到的无纺布和预氧化后的无纺布分别可用于制备面膜和吸附亚甲蓝（吸附率达到83.1%）。洋葱状碳纳米纤维复合膜的电导率随着洋葱状碳含量的增加而增加。洋葱状碳含量为 20 wt%（1.76 S/cm）的复合膜的电导率是纯碳纳米纤维（1.12 S/cm）的 1.5 倍。随着碳化温度的升高，电导率也增加。制备的洋葱状碳/碳纳米纤维复合膜表现出优异的电热转换性能。当电压为30 V、电流为2.79 A时，洋葱状碳/碳纳米纤维复合膜的表面温度（碳化温度为1100 ℃，洋葱状碳含量为20 wt%）高达588.4℃。