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硫/有序介孔碳复合材料的制备及其电化学性能

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Abstract:

用模板法合成有序介孔碳材料(orderedmesoporouscarbon,OMC),以该材料作为硫的载体,用低温熔融的方法制备了硫/有序介孔碳(S/OMC)复合材料。通过透射电子显微镜、比表面分析和X射线粉末衍射仪对材料进行表征。结果表明OMC孔道有序,比表面积高达1600m2/g,硫在OMC内分散性良好。对S/OMC又进行了恒流充放电、循环伏安和交流阻抗等电化学性能测试,显示S/OMC电化学可逆性较好,首次放电容量达1430mA?h/g,60次循环时仍稳定在500mA?h/g。OMC内部有序的孔道和较大的表面微孔对电池性能的提高起到了重要的作用。

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