期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
卷 29, 期 16, 页码 13794-13802出版社
SPRINGER
DOI: 10.1007/s10854-018-9510-5
关键词
-
类别
资金
- UGC [F4-2/2006 (BSR)/13-723/2012 (BSR)]
Ruthenium (Ru) and cerium (Ce) doped tungsten oxide (WO3) were successfully synthesized at various concentration (1-5 wt.%) by microwave irradiation method without adding any surfactant and studied as a supercapacitor electrode material for the first time. The effect of Ru and Ce on structural and morphological properties were studied systematically by using powder X-ray diffraction (XRD), thermogravimetry (TG)-differential thermal analysis (DTA), scanning electron microscopy (SEM) and tunneling electron microscopy (TEM). Powder XRD analyses reveal the formation of orthorhombic structure for the as-synthesized pure and doped WO3. Annealing at 500 A degrees C modifies the structure of the as-synthesized materials from orthorhombic to monoclinic. TG-DTA shows the elimination of water at around 170 A degrees C which confirms the structural change of orthorhombic to monoclinic. TEM images shows that the doping in WO3 affects the morphology, changing form hexagonal shape to elongated spherical shape and flake-like nanoclusters in Ru and Ce doped WO3, respectively. The electrochemical measurements of cyclic voltammetry, galvanostatic charge-discharge and impedance were performed in a three-electrode configuration to assess the electrochemical performances of the synthesized materials for supercapacitor applications. Among all the doping, 2 wt.% Ce doped WO3 shows a high specific capacitance value of 52 F g(-1) at a current density of 0.1 A g(-1). The energy density is found to be 5.49 W h Kg(-1) for W0.98Ru0.02O3 and 7.22 W h Kg(-1) for W0.98Ce0.02O3 at a power density of 50.08 W Kg(-1) and 49.22 W Kg(- 1), respectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据