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

扫码查看
? 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.

展开 >

College of Material Science and Engineering Central South University

College of Mechanical Engineering Hunan Institute of Science and Technology

China Nerin Engineering Co. Ltd

2022

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN:0925-8388
年,卷(期):2022.909
  • 15
  • 50