以一氧化硅、蔗糖及天然石墨为原料,通过高能球磨和热解工艺制备了电化学性能优异的SiO/C/G复合负极材料.采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对复合材料的物相和形貌进行了表征.所制备的复合材料中,纳米SiO颗粒(＜50 nm=被无定形碳粘结并均匀分散在石墨鳞片上.电化学性能测试表明,该复合材料100次循环后,可逆容量高达1108.9 mAh/g,容量保持率为103.8％.优异的电化学性能主要归因于纳米SiO颗粒在无定形碳基体中的均匀分布、无定形碳基体的缓冲作用和石墨相对复合材料导电性能的改善.
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