Flower-like MoS2/graphene nanocomposite enables high-performance flexible all-solid-state asymmetric micro-supercapacitor

Researchers from Sungkyunkwan University and Hubei University of Technology have reported a scalable and cost-effective process to produce an all-solid-state asymmetric micro-supercapacitor based on nanostructured flower-like MoS2/graphene cathode and activated carbon anode. The MoS2/graphene nanocomposites were synthesized via a hydrothermal method, leveraging the synergistic effect of pseudocapacitive MoS2 and highly conductive graphene to enhance electrode capacitance and cycling stability.

Facile bar-coating and laser cutting techniques were used to fabricate the asymmetric micro-supercapacitor. The device has a stable operating voltage of 1.6 V, and achieves an impressive area capacitance of 183.7 mF cm−2, and a maximum area energy density of 65.3 mWh cm−2, which the team says is the highest areal energy density among MoS2-based micro-supercapacitors.

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