One-step electrodeposited MoS 2 @Ni-mesh electrode for flexible and transparent asymmetric solid-state supercapacitors

• Published in: Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2020-11, Vol.8 (45), p.24040-24052
• Main Authors: Soram, Bobby Singh, Dai, Jiu Yi, Thangjam, Ibomcha Singh, Kim, Nam Hoon, Lee, Joong Hee
• Format: Article
• Language: English
• ISSN: 2050-7488; 2050-7496
• DOI: 10.1039/D0TA07764J

Transparent and flexible energy-storage devices have currently gained a lot of attention as wearable and portable electronics. Herein, we develop a one-step electrodeposited MoS 2 nanosheet@Ni-mesh core–shell network nanostructure as a transparent negative electrode for the flexible and transparent asymmetric solid-state supercapacitor (FT-ASSc). In the fabricated core–shell nanosheet network architecture, the junctionless interconnected Ni-mesh network with excellent conductivity contributes to superior electron transport pathways, and the nanostructure of the MoS 2 over the Ni-mesh provides effective interface contact between the active material and current collector. As a result, the MoS 2 @Ni-mesh network negative electrode provides an areal capacitance of 7.31 mF cm −2 at the scan rate of 10 mV s −1 with an 80% capacity retention rate after 5000 GCD cycles. Moreover, the fabricated FT-ASSc with a transmittance of 51% can operate up to a maximum working potential window of 1.6 V and also provide a maximum volumetric capacitance of 48.32 mF cm −3 at 0.4 mA cm −3 current density. This work might provide a new strategy for improving the electrochemical performance of transparent and flexible energy-storage devices for next-generation integrated electronic gadgets.