Engineering NiCo2S4 nanoparticles anchored on carbon nanotubes as superior energy-storage materials for supercapacitors

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

doi:10.1039/d2ra06796j

Engineering NiCo₂S₄ nanoparticles anchored on carbon nanotubes as superior energy-storage materials for supercapacitors

RSC Adv. 2022 Dec 6;12(54):34904-34909. doi: 10.1039/d2ra06796j.

Authors

Junming Chen^{1

2}, Zhiling Du³, Kun Cheng^{1

2}, Jusheng Bao^{1

2}, Guiling Wang^{1

2}, Yue Yao^{1

2}, Jiayi Song^{1

2}, Jing Yue^{1

2}, Kun Xu^{1

2}, Weicheng Xie^{1

2}, Wei Qiang^{1

2}, You Liu^{1

2}, Xuchun Wang^{1

2}

Affiliations

¹ College of Chemistry and Materials Engineering, Anhui Science and Technology University Bengbu Anhui 233000 China liuyou@ahstu.edu.cn wangxc@ahstu.edu.cn.
² Anhui Province Quartz Sand Purification and Photovoltaic Glass Engineering Research Center Bengbu Anhui 233000 China.
³ School of Energy and Environmental, Hebei University of Engineering Handan 056038 China.

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.