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球磨法制备SnO2/石墨复合材料及其电化学性能

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Abstract:

利用球磨法制备了氧化锡(SnO2)/石墨复合材料,采用场发射扫面电镜、X射线衍射和比表面积对样品进行表征,结果显示,SnO2颗粒包裹在石墨片层上,SnO2/石墨复合材料的比表面积为83.90m2/g。电化学测试结果表明,球磨法制备的SnO2/石墨复合材料首次放、充电容量分别为1749mA?h/g和1346mA?h/g,在50mA/g,100mA/g和500mA/g电流密度下,循环40次后,该电极可逆放电容量仍然高达432mA?h/g。

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