Neoteric hollow tubular MnS/Co3S4 hybrids as high-performance electrode materials for supercapacitors

•A neoteric hybrid MnS/Co3S4 was fabricated by two steps of ion exchange.•A less energy consumption and more eco-friendly preparing strategy was proposed.•A hollow nanotubular micromorphology was demonstrated.•The diameter of nanotube was effectively adjusted by the manganese ion dosage.•The hybrid...

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Bibliographic Details
Published in:Electrochimica acta 2021-09, Vol.390, p.138893, Article 138893
Main Authors: Fuzhi, Li, Zhen, Chen, Dan, Zhang, Aokui, Sun, Pu, Shi, Jing, Liang, Quanguo, He
Format: Article
Language:English
Subjects:
Anion exchanging
Cation exchanging
Chlorides
Cobalt sulfide
Electrochemical analysis
Electrode materials
Energy storage
Hollow tubular structure
Ion exchange
Manganese
Manganese sulfide
Sodium sulfide
Supercapacitor
Supercapacitors
Tubes
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Summary:•A neoteric hybrid MnS/Co3S4 was fabricated by two steps of ion exchange.•A less energy consumption and more eco-friendly preparing strategy was proposed.•A hollow nanotubular micromorphology was demonstrated.•The diameter of nanotube was effectively adjusted by the manganese ion dosage.•The hybrid exhibited excellent performance when applied in supercapacitor electrode. Transitional metal chalcogenides with remarkable electrochemical performance are recently attracted growing interest as a novel type of material in the field of energy storage. Herein, neoteric hollow nanoscale tubular x-MnS/Co3S4 (x = 25, 50, 100, 200, 400) hybrids are achieved by two steps of ion exchange methods applying self-made cobalt chloride carbonate hydroxide (Co(CO3)0.35Cl0.20(OH)1.10) as precursor, sodium sulfide nonahydrate as a sulfur resource for anion exchange, and anhydrous manganese chloride as a manganese resource for cation exchange. When used in supercapacitors for the first time, the 200-MnS/Co3S4 sample manifests excellent electrochemical performance with high specific capacitance (627 Fg−1 at 1 A g − 1), exceptional rate capability (73.5% capacity retention from 1 to 50 A g − 1), and brilliant cycling stability (93.1% of initial capacity retention for 2000 cycles at 10 A g − 1). These results above indicate the great potential of hollow MnS/Co3S4 nano-tubes in the development of high-performance electrode materials for supercapacitors. [Display omitted]
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2021.138893