首页|Highly-active CoMn2O4 nanowires decorated with multilayer Ni(OH)2 nanosheets as bind-free electrodes for high-performance energy storage application
Highly-active CoMn2O4 nanowires decorated with multilayer Ni(OH)2 nanosheets as bind-free electrodes for high-performance energy storage application
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NSTL
Elsevier
? 2022 Elsevier B.V.Transition metal oxides have obtained considerable research attention in energy storage devices. In this study, we demonstrate the preparation of hierarchical CoMn2O4 @Ni(OH)2 nanowire arrays (CoMn2O4 @Ni(OH)2/Ni) by a combination of hydrothermal reactions and annealing process. This hybrid CoMn2O4 @Ni(OH)2/Ni electrode possesses a significantly enhanced capacity of 8.5 F cm?2 at 1 mA cm?2 (3017.9 F g?1 at 0.4 A g?1). Additionally, the assembled all-solid-state asymmetric supercapacitor (CoMn2O4 @Ni(OH)2/Ni//AC ASC) displays a comparable energy density of 76.2 Wh kg?1. Meanwhile, the prepared CoMn2O4 @Ni(OH)2/Ni anode revealed initial discharge capacity (~3548.2 mAh g?1). After 50 cycles, the CoMn2O4 @Ni(OH)2/Ni anode also shows a satisfied cycling stability (1437.4 mAh g?1 of capacity maintained). Further, the LED devices can be lit up for more 230 min by the assembled CoMn2O4 @Ni(OH)2/Ni cell. Therefore, this novel CoMn2O4 @Ni(OH)2/Ni materials with excellent electrochemical property have great potential in the high energy storage applications.
CoMn2O4 nanowiresHierarchical nanostructureLi ion batteryNi(OH)2 nanosheetsSupercapacitor
Huang W.、Li J.、Wang S.、Tao S.、Xiao Y.、Zhang Y.、Wang L.、Luo J.
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College of Material Science and Engineering Central South University
College of Mechanical Engineering Hunan Institute of Science and Technology