论文部分内容阅读
采用溶胶-凝胶法制备粒径均一的 Si O2微球,并以其作为牺牲模板,通过十六烷基三甲基溴化铵(CTAB)的连接作用在 Si O2微球表面生长 Mo S2和 C,借助碱液刻蚀去除二氧化硅微球模板制备了二硫化钼/碳中空微球材料,对产物进行了表征,并将产物制备成电极材料进行恒流充放电、倍率性能、循环伏安、交流阻抗测试。结果表明:所制备的 Mo S2/C 中空微球尺寸为 200~300 nm,其表面包裹着花瓣状的 Mo S2片层和无定形态的碳;作为锂电池负极材料,在 100 m A/g 电流密度下,首次充放电容量超过 1 400 m A·h/g,60 次循环后,电容量仍可以保持在 460 m A·h/g 左右。
Si02 microspheres with uniform particle size were prepared by the sol-gel method. Mo2Si2 microspheres were grown on the surface of Si O2 microspheres by using cetyltrimethylammonium bromide (CTAB) as a sacrificial template. C, removal of silica microspheres template by alkaline etching prepared molybdenum disulfide / carbon hollow microspheres material, the product was characterized, and the product was prepared as a constant current electrode material charge and discharge, rate performance, cyclic volt An, AC impedance test. The results showed that the size of Mo S2 / C hollow microspheres was 200-300 nm, the surface of which was coated with petal-like Mo S2 sheets and amorphous carbon. As the negative electrode material of lithium battery, At the current density, the initial charge-discharge capacity of more than 1 400 mA · h / g, 60 cycles, the capacitance can still be maintained at 460 mA · h / g or so.