A honeycomb-like ZnO/SnO2 nanocomposite on nickel foam for high-performance asymmetric supercapacitors. (18th June 2019)

• Record Type: Journal Article
• Authors: Ali, Awais; Ammar, Muhammad; Yahya, Zaid; Waqas, Muhammad; Jamal, Muhammad Ali; Salhabi, Esmail Husein M.
• Is Part Of: New journal of chemistry. Volume 43:Number 26(2019)
• Page Start: 10583
• Page End: 10589
• Publication Date: 2019-06-18
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c9nj01270b
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : In this work, a honeycomb-like ZnO/SnO2 nanocomposite was synthesized on nickel foam (NF) using a single-step hydrothermal route for achieving good electrochemical performance. Abstract : In this work, a honeycomb-like ZnO/SnO2 nanocomposite was synthesized on nickel foam (NF) using a single-step hydrothermal route for achieving good electrochemical performance. The as-prepared electrode showed an excellent electrochemical performance in 3 M KOH electrolyte, a superior specific capacitance ( C s ) of 2307 F g −1 and good stability, 78.8% retention of its initial value after 7000 galvanic charge–discharge (GCD) cycles in a three electrode system. An asymmetric supercapacitor (ASC, ZnO/SnO2 @NF//AC@NF) exhibited a maximum C s of 133 F g −1 with 92.8% retention after 4000 GCD cycles. The calculated energy and power density were 47.28 W h kg −1 and 10.4 kW kg −1 respectively. Our investigations demonstrate that the as-synthesized ZnO/SnO2 nanocomposite could be a good competitor as an electrode material in high-performance electrochemical energy storage applications.