The defect-rich MoS 2 ultrathin nanosheets with abundant unsaturated sulfur atoms are constructed by the stoichiometric ratio of Mo (VI) and L-cysteine in presence of 1, 6-hexanediamine. The as-prepared MoS 2 ultrathin nanosheets exhibit excellent electrochemical activities in lithium-ion battery and supercapacitor with high reversible capacity and good cycling stability. The construction of defects with abundant unsaturated sulfur atoms in the MoS 2 ultrathin nanosheets served as active sites for improving electrochemical performances in lithium-ion battery and supercapacitor. This work provides an accessible foundation for engineering more sophisticated defect-rich MoS 2 ultrathin nanosheetsbased composites for further optimization across a range of possible domains of applications.
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