MnO_(2)/NCNT复合材料制备及其氧还原性能研究  

Preparation and oxygen reduction properties of MnO_(2)/NCNT composites

作　　者：朱玉岚[1] 王锐 Zhu Yulan;Wang Rui(College of Petroleum and Chemical Engineering,Changzhou University,Changzhou 213164)

机构地区：[1]常州大学石油化工学院,常州213164

出　　处：《化工新型材料》2023年第11期118-122,共5页New Chemical Materials

基　　金：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)。

摘　　要：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MnSO_(4)·H_(2)O为锰源,水热得到MnO_(2)/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MnO_(2)/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:MnO_(2)/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 MnSO_(4)·H_(2)O as the manganese source,MnO_(2)/NCNT was obtained by hydrothermal method.NCNT and MnO_(2)/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 MnO_(2)/NCNT-0.6 composite exhibited excellent oxygen reduction performance,and possessed superior capacitance performance and lower electrochemical impedance.

关 键 词：凹凸棒石 氮掺杂碳纳米管 二氧化锰 氧还原 

分 类 号：O643[理学—物理化学]