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Facile Hydrothermal Synthesis of Fe2O3/rGO Composites for Low-Cost Supercapacitors
Nano ( IF 1.2 ) Pub Date : 2020-11-02 , DOI: 10.1142/s1793292020501623
Yiping Wang 1 , Bo Bai 1 , Qiang Wen 1 , Pengwei Li 1 , Huabei Jiang 2 , Wendong Zhang 1
Affiliation  

In this work, Fe2O3/rGO composites with high capacitive performance were synthesized via a facile hydrothermal route. The morphological and structural characteristics of the synthesized material were obtained by using X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The three-electrode system was employed for investigating the electrochemical performance in 6 M aqueous electrolytic solution of KOH. The electrochemical data reveals that the Fe2O3/20%rGO shows as high as 171 F g[Formula: see text] specific capacitance at 1 A g[Formula: see text] discharge current density within the operated voltage window −0.9[Formula: see text]V–0[Formula: see text]V, which is 55% higher than that of the bare Fe2O3. After 1000 cycles, the capacity reservation was retained at 74%. The results indicate that the synthesized Fe2O3/rGO material could be a potential candidate for applications in an environmentally friendly commercial electrode.

中文翻译:

用于低成本超级电容器的 Fe2O3/rGO 复合材料的简便水热合成

在这项工作中,Fe23通过简便的水热法合成了具有高电容性能的 /rGO 复合材料。采用X射线衍射(XRD)、透射电子显微镜(TEM)和扫描电子显微镜(SEM)对合成材料的形态和结构特征进行了分析。采用三电极系统研究了在 6 M KOH 水溶液中的电化学性能。电化学数据表明,Fe23/20%rGO 显示高达 171 F g[公式:见文本] 1 A g 时的比电容[公式:见文本] 工作电压窗口内的放电电流密度 −0.9[公式:见文本]V–0[公式:见正文]V,比裸Fe高55%23. 1000 次循环后,容量预留保持在 74%。结果表明,合成的 Fe23/rGO 材料可能是用于环保商业电极的潜在候选材料。
更新日期:2020-11-02
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