张旭东,魏智强,赵文华,白军善,朱学良,姜金龙.碳包覆氧化镍纳米颗粒制备与电化学性能研究[J].稀有金属材料与工程,2019,48(4):1304~1309.[ZHANG Xu-dong,WEI Zhi-qiang,ZHAO Wen-hua,BAI Jui-shan,ZHU Xue-liang,IANG Jin-long.Preparation and electrochemical performance of Carbon-encapsulated NiO Nanoparticles[J].Rare Metal Materials and Engineering,2019,48(4):1304~1309.]
碳包覆氧化镍纳米颗粒制备与电化学性能研究
投稿时间:2017-09-07  修订日期:2017-10-23
中文关键词:  超级电容器  碳包覆  NiO  核壳结构  电化学性能
基金项目:国家自然科学基金资助项目(51261015),甘肃省自然科学基金资助项目(1308RJZA238)
中文摘要:
      采用直流电弧放电等离子体技术成功制备了核壳结构碳包覆氧化镍纳米颗粒,并采用X射线衍射、高分辨透射电子显微镜、X射线能量色散分析谱仪和表面物理吸附仪等测试技术对样品的微观结构进行研究。并利用循环伏安法、恒电流充放电以及交流阻抗等技术研究其作为超级电容器电极材料的电化学性能。实验结果表明:直流电弧等离子体技术制备的碳包覆氧化镍纳米颗粒具有典型的核壳结构,内核为面心立方结构的氧化镍纳米颗粒,外壳为碳层。颗粒形貌主要为立方体结构,粒度均匀,分散性良好,粒径分布在30-70nm范围,平均粒径为50nm,外壳碳层的厚度为5nm。碳包覆氧化镍纳米颗粒具有较高的比容量和良好的电化学活性。
Preparation and electrochemical performance of Carbon-encapsulated NiO Nanoparticles
英文关键词:supercapacitor  carbon-encapsulated  NiO  core-shell structure  electrochemical performance
英文摘要:
      Core shell structure carbon encapsulated NiO nanoparticles were successfully prepared by DC arc discharging plasma technology. The micstructure of the samples were studied by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), X-ray energy dispersive spectrometry (XEDS) and Surface physical adsorption. The cyclic voltammetry, galvanostatic changing-discharging and electrochemical impedance spectroscopy were investigated to characterize the electrochemical performances of the composites as the electrode materials for super-capacitors. The experimental results indicate that the carbon encapsulated NiO nanoparticles prepared by DC arc plasma technology possess typical core shell structure, the core of the particles is NiO with face centered cubic structure, and the outer shell is disordered carbon layer. The particle morphology exhibit cube structure with uniform particle size and good dispersion. The particle size distribution is in the range of 30-70nm, the average particle size is 50nm, and the thickness of the carbon shell is about 5nm. Carbon encapsulated NiO nanoparticles has high specific capacity and good electrochemical activity.
作者单位E-mail
张旭东 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室 yodongchang@163.com 
魏智强 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室 zqwei7411@163.com 
赵文华 兰州理工大学 理学院  
白军善 兰州理工大学 理学院  
朱学良 兰州理工大学 理学院  
姜金龙 兰州理工大学 理学院  
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