Two-Dimensional Layered Bismuthene/Antimonene Nanocomposite as a Potential Electrode Material for the Fabrication of High-Energy Density Hybrid Supercapacitors

Abstract

Advanced two-dimensional (2D) materials with excellent physicochemical properties create huge interest in developing high-energy-density supercapacitors without diminishing their power densities. Herein, a novel bismuthene/antimonene nanocomposite (Biene/Sbene NC) has been employed as an efficient active material to fabricate supercapacitor electrodes with excellent electrochemical performance. As a result, the Biene/Sbene electrode delivers a high specific capacity of 1003.3 C/g at a scan rate of 10 mV/s and an outstanding cycling stability of 87.3% for 10,000 charge−discharge cycles. Moreover, the composite electrode provides the total, outer, and inner capacity of 2857.14, 80, and 2777.14 C/g respectively based on Trasatti analysis and their capacitive and diffusion contributions of 97.2 and 2.8% correspondingly. The hybrid supercapacitor (HSC) has been fabricated by the Biene/Sbene NC cathode and activated carbon (AC) anode which demonstrates a high energy density of 131.44 Wh/kg and a maximum power density of 8262.2 W/kg. In addition, the Biene/Sbene//AC HSC demonstrates practical utilization by illuminating the red light-emitting diodes for 5 min by interconnecting three HSCs in series. This work will stimulate an alternate idea to fabricate electrode materials by utilizing novel 2D materials with excellent physicochemical properties for next-generation energy storage devices.

Compositing redox-rich Co–Co@Ni–Fe PBA nanocubes into cauliflower-like conducting polypyrrole as an electrode material in supercapacitors

“…Additionally, Trasatti's analysis was used to quantify the contribution of capacitive and diffusive currents to the total capacitance value. 54,[57][58][59][60][61] According to this approach, the total charge (q T ) is the sum of the diffusion-controlled inner (q i ) and non-diffusion-controlled outer surface charge (q o ); by dividing the charge with the CV potential window, total capacitance (C T ), diffusion-controlled inner capacitance (C i ), and non-diffusion controlled outersurface capacitance (C o ) can be determined. 54,62,63 The C T equals the reciprocal y-intercept of the C s À1 vs. n 1/2 plot (Fig.…”

Recent Development Strategies for Bismuth‐Driven Materials in Sustainable Energy Systems and Environmental Restoration

“…In addition, a high energy density of 131.44 W h kg −1 has been achieved with a hybrid device constructed with activated carbon as a negative electrode. [ 171 ] Flexible supercapacitors and ionic‐type capacitive sensors that use a 2D bismuthine‐anchored graphene architecture have also been reported. The hierarchical porous aerogel framework with conductive 2D Bi flakes increases the interlayer electron conduction and encourages electrolyte infiltration for enhanced energy storage and pressure‐sensing properties.…”

Understanding the Electrochemical Performance of Spongy C–F Derivative Chains as an Effective Anion Trapping Composite Matrix for Li-Ion Batteries

“…According to the findings, boron nitride (BN)-incorporated polymer chains possess optimistic effects with improved thermal homogeneity, which promotes uniform nucleation and growth of lithium metal while enhancing Li-ion migration and electrochemical performance . Particularly, boron atoms can effectively trap anions in the liquid electrolyte via Lewis acid–base interaction between the BN particles and anions in the liquid electrolyte. − Furthermore, the uniform thickness of the membrane plays an essential role in the long cycle life of the batteries . As an alternative to the traditional doctor blade technique, the thickness of the membrane can be controlled using spinning …”