以聚苯胺为前驱体、氯化锌为活化剂,采用高温热解法化制备多孔炭材料,利用扫描电子显微镜、X射线衍射仪、物理吸附仪和电化学测试等手段对材料的形貌、结构和超级电容器性能进行表征,考察氯化锌用量对材料超级电容器性能的影响。结果表明,随着氯化锌用量的增大,多孔炭材料的比表面积和孔体积均先增大后减小,当聚苯胺/氯化锌质量比为2∶1时,多孔炭材料的比表面积和孔体积达到最大,分别为1186.7970m2/g和0.5779cm3/g。此时比电容也最大,为306.05F/g;当电流密度从1A/g增加到5A/g时,比电容约保留70%,表现出良好的倍率性能。
With polyaniline as precursor and zinc chloride as activator,porous carbon materials were prepared by high-temperature pyrolysis.The morphology,structure and supercapacitor performance of the materials were characterized by scanning electron microscopy,X-ray diffractometer,physical adsorption instrument and electrochemical test,respectively.The effects of zinc chloride dosage on the supercapacitor perfoamance of the materials were investigated.The results showed that with the increase of the zinc chloride dosage,the specific surface area and pore volume of porous carbon materials first increased and then decreased.When the mass ratio of polyaniline to zinc chloride was 2∶1,the maximum specific surface area and pore volume of the porous carbon material reached the maximum,1186.7970m2/g and 0.5779cm3/g,respectively.Meanwhile,the specific capacitance was also the largest,which was 306.05F/g.When the current density increased from 1A/g to 5A/g,the specific capacitance remained about 70%,showing good magnification performance.
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基金资助
2021年度郑州市科技局基础研究及应用基础研究项目(zkz202113);2022年郑州工程技术学院技术研发推广与转化基金项目(zjz202207)
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