| 球形纳米Fe3O4的制备及超级电容性能研究 |
| Preparation and Capacitance Performance of Nanosized Spherical Fe3O4 |
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| 摘要: 采用双氧水氧化水热法制备Fe3O4，通过IR、XRD和SEM对样品的结构和性能进行表征。结果表明，产物为形貌规整的球形，平均粒径为25 nm。通过恒流充放电、循环伏安和交流阻抗等方法研究Fe3O4电极的电容性能。电化学测试表明，在1 mol·L-1 Na2SO3溶液中，-1.2～0.2 V(vs SCE)电位范围内，Fe3O |
| 关键词: Fe3O4 水热法 超级电容器 电容性能 |
| 基金项目: |
| Abstract: Nano-sized Fe3O4 powder was prepared through an oxygenation-hydrothermal method. The structure and morphology of the product were characterized by IR, XRD and SEM. Results show that the as-prepared powder has regularly spherical morphology, and the average size of product is about 25 nm. Electrochemical properties of Fe3O4 electrode were performed by galvanostatic charge/discharge, cyclic voltammeter (CV) and electrochemical impedance spectrometry (EIS). The results indicate that the Fe3O4 electrode shows good capacitive behaviour and cycling stability in 1 mol·L-1 Na2SO3 electrolyte with the potential range of -1.2～0.2 V (vs SCE). The specific capacitance of the material as a single electrode is 113.01 F·g-1 at the current density of 100 mA· g-1, and 72.9% discharge specific capacitance is maintained after 1 000 cycles. |
| Keywords: Fe3O4 hydrothermal method supercapacitor capacitance performance |
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| 陈洁,黄可龙,刘素琴.球形纳米Fe3O4的制备及超级电容性能研究[J].无机化学学报,2008,24(4):621-626. |
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