Electrochemical energy storage performance of heterostructured SnO2@MnO2 nanoflakes. Issue 2 (1st February 2017)

• Record Type: Journal Article
• Authors: Xiao, Huanhao; Yao, Shunyu; Qu, Fengyu; Zhang, Xu; Wu, Xiang
• Is Part Of: Ceramics international. Volume 43:Issue 2(2017)
• Page Start: 1688
• Page End: 1694
• Publication Date: 2017-02-01
• Subjects: SnO2@MnO2 nanoflakes -- Hydrothermal -- Electrode materials -- Supercapacitor; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.08.064
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this work, we report synthesis of SnO2 @MnO2 nanoflakes grown on nickel foam through a facile two-step hydrothermal route. The as-obtained products are characterized by series of techniques such as scanning electron microscopy (SEM), X-ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The as-obtained SnO2 @MnO2 nanoflakes are directly used as supercapacitor electrode materials. The results show that the electrode possesses a high discharge areal capacitance of 1231.6 mF cm −2 at 1 mA cm −2 and benign cycling stability with 67.2% of initial areal capacitance retention when the current density is 10 mA cm −2 after 6000 cycles. Moreover, the heterostructured electrode shows 41.1% retention of the initial capacitance when the current densities change from 1 to 10 mA cm −2, which reveals good rate capability. SnO2 @MnO2 nanoflakes products which possess excellent electrochemical properties might be used as potential electrode materials for supercapacitor applications.