Facile synthesis of NiMn2O4 nanosheet arrays grown on nickel foam as novel electrode materials for high-performance supercapacitors. Issue 13 (October 2016)

• Record Type: Journal Article
• Authors: Wei, Hongmei; Wang, Jinxing; Yu, Le; Zhang, Yangyang; Hou, Dewen; Li, Tengfei
• Is Part Of: Ceramics international. Volume 42:Issue 13(2016)
• Page Start: 14963
• Page End: 14969
• Publication Date: 2016-10
• Subjects: Spinel -- NiMn2O4 -- Nanosheet arrays -- Supercapacitors; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.06.140
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Nanostructured spinel NiMn2 O4 arrays have been fabricated by a facile hydrothermal approach and further investigated as binder-free electrode for high-performance supercapacitors. Compared with Mn3 O4, NiMn2 O4 exhibited higher specific capacitances (662.5 F g −1 and 370.5 F g −1 in different electrolytes at the current density of 1 A g −1 ) and excellent cycling stability (~96% capacitance retention after 1000 cycles) in a three-electrode system. Such a novel microstructure grown directly on the conductive substrate provided sufficient active sites for redox reaction resulting in their enhanced electrochemical behaviors. Their improved performances suggested that ultrathin sheet-like NiMn2 O4 arrays on Ni foam substrate were a promising electrode material for supercapacitors.