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Updated: Sep 24, 2025
Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Hierarchical Co(OH)2@NiMoS4 nanocomposite on carbon cloth as electrode for high-performance asymmetric
Junxian Li1, Jianwei Zhao1, Lirong Qin1
1School of Physical Science and Technology, Southwest University Chongqing 400715 P. R. China zhaojw@swu.edu.cn.
Abstract:
Hierarchical Co(OH)2@NiMoS4 nanocomposites were successfully prepared on a carbon cloth by using a simple two-step hydrothermal method coupled with a room-temperature vulcanization method. The resulting nanocomposites were composed of large-scale uniform Co(OH)2 nanowires fully covered with ultrathin vertical NiMoS4 nanoflakes. Because of the synergetic effect between Co(OH)2 and NiMoS4, the nanocomposites exhibited good electrochemical performance as a supercapacitor electrode. In particular, a specific capacity of 2229 F g-1 was achieved at a current density of 1 A g-1. In addition, an asymmetrical supercapacitor fabricated using activated carbon as the negative electrode and the as-synthesised nanocomposite as the positive electrode exhibited a maximum energy density of 59.5 W h kg-1 at a power density of 1 kW h kg-1 and excellent cycling stability (100% capacitance retention after 5000 cycles). These results indicate that the hierarchical Co(OH)2@NiMoS4 nanocomposite has great potential for practical application in high-performance energy storage devices.
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