| 冯晓娟,石彦龙,蔺旺梅,金小青.化学通报,2016,79(1):71-76. |
| Fe3O4/N-rGO复合材料的制备及其电化学电容性能 |
| Preparation of Fe3O4 /N- rGO electrode materials and their electrochemical supercapacitive performance |
| 投稿时间：2015-04-13 修订日期：2015-05-31 |
| DOI： |
| 中文关键词: 四氧化三铁 氮掺杂还原石墨烯 水热法 电化学电容 |
| 英文关键词:Ferroferric oxide, Nitrogen doping reduction grapheme, Hydrothermal method, Electrochemical capacitance |
| 基金项目:国家自然科学基金资助项目(51263008） |
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| 中文摘要: |
| 通过简单的一步水热法成功制备了一种新颖的四氧化三铁/氮掺杂还原石墨烯(Fe3O4/N-rGO)复合物电极材料。采用X-射线衍射(XRD)、扫描电子显微镜(FESEM)等手段对其结构和形貌进行了表征,用循环伏安法、交流阻抗和恒电流充放电等方法分别研究了所制备材料的电化学性能,结果表明,Fe3O4/N-rGO复合材料具有更高的比电容和更好的循环稳定性,在0.5A/g的电流密度下,复合物的比电容高达291.7F.g-1,比纯的Fe3O4的比电容(71 F.g-1)和纯的N-rGO的比电容(100 F.g-1)高出近三倍。可见,小粒径Fe3O4的加入大大降低了石墨烯的团聚,两者间的协同作用使复合物的比电容得到了提高。 |
| 英文摘要: |
| A novel ferroferric oxide/ nitrogen doping reduction graphene (Fe3O4/N-rGO) composite electrode materials was successfully prepared by a simple hydrothermal method. Its structure and morphology were characterized using X-ray diffraction (XRD) and scanning electron microscope (FESEM), respectively. The electrochemical performance of prepared materials was studied by cyclic voltammetry and ac impedance and constant current charge and discharge technology. The results show that the Fe3O4/N-rGO composite material shows higher specific capacitance and better cycle stability. The specific capacitance of composites is 291.7 F.g-1, which is higher nearly three times than pure ferroferric oxide (71 F.g-1) and pure graphene (100 F.g-1) under the current density of 0.5A/g. It is clear that the addition of smaller particle size of Fe3O4 greatly reduces the agglomeration of graphene and improves the specific capacitance of composites. |
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