以凹凸棒石(ATP)为模板,聚苯胺(PANI)为碳源和氮源,制备得到ATP/PANI核壳状复合物,在经过高温煅烧以及除去模板之后,得到氮掺杂碳纳米管(NCNT)纳米材料,再以MnSO4·H2O为锰源,水热得到MnO2/NCNT,通过透射电镜、扫描电镜、红外光谱、X射线衍射和氮气吸附仪等手段对不同原料比所制NCNT和MnO2/NCNT复合材料进行表征分析,并通过循环伏安(CV)、交流阻抗(EIS)等方法对其氧还原(ORR)性能进行研究。结果表明:MnO2/NCNT-0.6表现出优异的氧还原性能,拥有优良的电容性能以及更低的电化学阻抗。
ATP/PANI core-shell composite was prepared by using attapulgite (ATP) as template and polyaniline (PANI) as carbon and nitrogen source.After high temperature calcination and removal of template,nitrogen-doped carbon nanotubes (NCNT) were obtained.Using MnSO4·H2O as the manganese source,MnO2/NCNT was obtained by hydrothermal method.NCNT and MnO2/NCNT prepared with different raw material ratios were characterized and analyzed by TEM,SEM,FTIR,XRD and NAS.The oxygen reduction reaction (ORR) properties were studied by CV and EIS.The results showed that MnO2/NCNT-0.6 composite exhibited excellent oxygen reduction performance,and possessed superior capacitance performance and lower electrochemical impedance.
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基金资助
江苏省重点研发计划(产业前瞻与共性关键技术——竞争项目)(BE2018100);常州市科技支撑计划(社会发展)(CE20215031)
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