Design of MoS2/NC/MnO2 hollow microsphere electrode for high performance supercapacitors

• Published in: Ionics Vol. 28; no. 5; pp. 2403 - 2411
• Main Authors: Tong, Xing, Han, Enshan, He, Yanzhen, Liu, Jiabao, Wang, Ronghao, Guo, Shuaishuai, Chen, Gaojun, Zhang, Hao
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2022; Springer Nature B.V
• Subjects: Capacitance; Carbon; Chemistry; Chemistry and Materials Science; Composite materials; Condensed Matter Physics; Electrochemistry; Electrode materials; Electrodes; Energy Storage; Ion channels; Ion transport; Manganese dioxide; Microspheres; Molybdenum disulfide; Optical and Electronic Materials; Original Paper; Polyanilines; Renewable and Green Energy; Supercapacitors; Manganese dioxide; Supercapacitors; Electrochemical performance; Flowerlike molybdenum disulfide; N-doped carbon
• ISSN: 0947-7047; 1862-0760
• DOI: 10.1007/s11581-022-04460-3

The composite hybrid with hollow microspheres structure composed of molybdenum disulfide/N-doped carbon/Manganese dioxide (MoS 2 /NC/MnO 2 ) was synthesized via a facile template-assisted method, which shown excellent electrochemical performances for supercapacitors applications. The hollow MoS 2 microspheres are assembled by layered MoS 2 nanosheets, which provide substantial ion channels and large surface area for electrolyte ion transport. Polyaniline as the precursor of carbon materials is grown on the surface of the hollow MoS 2 microspheres by oxidative polymerization. After carbonization, the composite material is obtained by hydrothermal method. The MoS 2 /NC/MnO 2 hollow microspheres electrode possesses high specific capacitance of 882 F·g −1 at a scan rate of 0.5 A·g −1 and a capacitance retention rate of 85.4% at 1 A·g −1 after 2500 cycles charge–discharge, which keeps better cycle stability compared to MnO 2 composite. The as-prepared MoS 2 /NC/MnO 2 microspheres material has the potential to be a strong competitor in high performance supercapacitor electrode materials and has significant potential for supercapacitor applications.