Engineering NiCo2S4 nanoparticles anchored on carbon nanotubes as superior energy-storage materials for supercapacitors |
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| Authors: | Junming Chen Zhiling Du Kun Cheng Jusheng Bao Guiling Wang Yue Yao Jiayi Song Jing Yue Kun Xu Weicheng Xie Wei Qiang You Liu Xuchun Wang |
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| Affiliation: | College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu Anhui 233000 China.; Anhui Province Quartz Sand Purification and Photovoltaic Glass Engineering Research Center, Bengbu Anhui 233000 China ; School of Energy and Environmental, Hebei University of Engineering, Handan 056038 China |
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| Abstract: | Fabricating high-capacity electrode materials toward supercapacitors has attracted increasing attention. Here we report a three-dimensional CNTs/NiCo2S4 nanocomposite material synthesized successfully by a facile one-step hydrothermal technique. As expected, a CNTs/NiCo2S4 electrode shows remarkable capacitive properties with a high specific capacitance of 890 C g−1 at 1 A g−1. It also demonstrates excellent cycle stability with an 83.5% capacitance retention rate after 5000 cycles at 10 A g−1. Importantly, when assembled into a asymmetric supercapacitor, it exhibits a high energy density (43.3 W h kg−1) and power density (800 W kg−1). The exceptional electrochemical capacity is attributed to the structural features, refined grains, and enhanced conductivity. The above results indicate that CNTs/NiCo2S4 composite electrode materials have great potential application in energy-storage devices.A one-step hydrothermal method was used to successfully synthesize NiCo2S4 nanocomposites anchored on carbon nanotubes as excellent energy storage materials for supercapacitors. |
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