The construction of hierarchical PEDOT@MoS2 nanocomposite for high-performance supercapacitor

Hierarchical structural PEDOT@MoS2 nanocomposite is synthesized via a facile electrochemical co-deposition of the intercalation of PEDOT into flower-like MoS2 microspheres. The SEM, TEM, and other characterization results demonstrate the hierarchical PEDOT@MoS2 composite with an enlarged interlayer spacing of MoS2 to 1.02 nm, in which PEDOT nanoparticles act as intercalation, and flower-like MoS2 microspheres are used as a substrate for growth. The electrochemical characterizations indicate that the PEDOT@MoS2 electrode has an ultrahigh specific capacitance of 4418 mF cm(-2) at 2 mA cm(-2) and remarkable cycling stability, retaining 100% of the initial capacitance at a high current density of 100 mA cm(-2) after 10,000 cycles. The symmetric PEDOT@MoS2 supercapacitor presents a high energy density of 88.3 mWh cm(-2) at 60 mW cm(-2), and outstanding cycling stability (93% after 10,000 cycles). These prominent electrochemical performances are attributed to the expanded interlayer spacing, the synergistic effect between PEDOT and MoS2, the low resistance, along with the PEDOT@MoS2 porous structure, indicating great potential applications of the PEDOT@MoS2 electrode in the energy storage field.

Automated summary

The hierarchical structural PEDOT@MoS2 nanocomposite was synthesized through a facile electrochemical co-deposition, showing an enlarged interlayer spacing of MoS2 and outstanding electrochemical performance.