AI Article Synopsis
- - The research presents a novel hybrid supercapacitor (HSC) using a 3D core-shell structure made from NiS@NiCoP nanocomposite, which combines vertically aligned NiS nanorods and NiCoP nanosheets for improved energy storage.
- - A simple synthesis process involving hydrothermal and electrodeposition methods successfully creates this nanocomposite, enhancing charge transfer and reaction kinetics for better performance.
- - The resulting HSC showcases excellent specifications like a high areal capacity of 109 µAh/cm², energy density of 74.9 Wh/kg, and impressive cycling stability, achieving 92% capacity retention over a 144-hour test, making it a promising material for advanced energy storage. *
Article Abstract
The design and discovery of free-standing hybrid electrode materials with large absolute capacity and high cycling stability for energy storage become desirable and are still challenging. In this work, we demonstrate that the hybrid supercapacitor (HSC) device is assembled by 3D core-shell hierarchical nanorod arrays of NiS@NiCoP nanocomposite for the first time. The NiS@NiCoP nanocomposite is successfully synthesized through a facile stratagem containing hydrothermal process and the subsequent electrodeposition method. The 3D architecture of NiS@NiCoP hybrid electrode composed of vertically aligned "hyperchannel" 1D NiS nanorods and highly conductive interconnected 2D nanosheets of NiCoP is beneficial to fast electron transfer kinetics, thus leading to enhancing the ionic and electronic conductivity, kinetics of redox reaction, and synergistic behavior of active species. The fabricated HSC device with NiS@NiCoP electrode delivers outstanding areal capacity of 109 µAh cm at a current density of 1 mA cm, brilliant energy density of 74.9 Wh kg at a power density of 700 W kg, and prominent cyclic performance of 92% capacity retention even after 144-h floating test. This work demonstrates that the core-shell hierarchical nanorod arrays of NiS@NiCoP can be viewed as one of the novel battery-type electrode materials for high-performance HSCs.
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| http://dx.doi.org/10.1016/j.jcis.2022.06.020 | DOI Listing |
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