活性碳/氧化钌复合电极材料的制备及性能研究

Preparation of Active Carbon/RuO2 Composite Electrode and Its Properties

摘要:

通过胶体法制备不同含量的活性碳/氧化钌复合电极材料，然后把该材料在240 ℃热处理，随后对复合物进行热失重分析，利用X射线衍射仪及扫描电镜分别对该电极材料的形貌和结构进行表征；此外，对复合电极材料进行电化学性能测试。结果表明：活性碳与氧化钌复合有利于获得较细的颗粒，但是不影响氧化钌的结构；活性碳/氧化钌复合电极中碳的质量分数从13.6%增加到36.18%时，其比电容由664 F/g减小为526 F/g，能量密度从103.27 Wh/kg降为75.18 Wh/kg，功率密度从0.48 kW/kg增加为0.64 kW/kg，阻抗也随之降低；此外，采用该工艺制备氧化钌复合电极便捷实用

Abstract:

The ruthenium oxide-carbon composite electrodes with different carbon contents were prepared by a colloid method and then they were annealed at 240 ℃. The morphologies and the microstructures of the AC/RuO2 composites were characterized by thermo-gravimetric analysis, SEM and XRD, and their electrochemical properties were also tested. Results show that the compositing of active carbon and ruthenium oxide is beneficial to obtaining of fine particles and does not affect the structure of ruthenium oxide. When the carbon content increases from 13.4% to 36.18wt% in the AC/Ruthenium oxide electrode, the capacitance decreases from 664 F/g to 526 F/g, the energy density drops from 103.27 Wh/kg to 75.18 Wh/kg, and the power density increases from 0.48 kW/kg to 0.64 kW/kg as well as the impedance decreases. In addition, the colloid method is practical and convenient