Biopolymer-assisted hydrothermal synthesis of flower-like MoS2 microspheres and their supercapacitive properties

•Flower-like MoS2 microspheres have been prepared by a hydrothermal route.•The MoS2 microspheres are constructed by numerous nanosheets with few-layered structures.•A probable assembly formation process is presented.•The materials exhibite a good electrochemical supercapacitor performance.

Flower-like MoS2 microspheres were successfully synthesized via a facile hydrothermal route followed by annealing treatment using biopolymer (sodium alginate, SA) as an additive. The experimental results indicated that the MoS2 products were of hexagonal phases and had a hierarchical flower-like morphology, which were constructed with MoS2 nanosheets. A probable SA-induced assembly process was presented to account for the formation of the flower-like microspheres. Additionally, as an electrode material for supercapacitor, this MoS2 microsphere delivered a high specific capacitance at a large current density with good cycle ability.

Graphical abstractSEM image and illustration of the possible formation process of the as-prepared MoS2 flower-like microspheres.Figure optionsDownload full-size imageDownload as PowerPoint slide