Design of a High Energy Density and High Power Density Asymmetric Hybrid Supercapacitor Using Ternary Nickel Cobalt Sulfide and a Mixture of Cu-Based Metal-Organic Framework and Reduced Graphene Oxide

Abstract:

An asymmetric hybrid supercapacitor is designed using ternary nickel cobalt sulfide (TNCS) as cathode and a mixture of Cu-based metal-organic framework and reduced graphene oxide (MrGO) as anode with KCl as electrolyte. Various techniques including EIS, CV, and GCD are applied to evaluate the electrochemical properties. The EIS analysis shows total internal resistance is only 25 Ω. Taking advantages of the high conductivity and porosity nature of both electrode materials, the supercapacitor we built exhibit high specific capacitance (31 mF cm^-2 under 4 mA cm^-2). The supercapacitor also demonstrates high power density of 3.1 mW cm^-2 while charging within 5 s.

• Periodical: Solid State Phenomena (Volume 377)
• Pages: 79-85
• DOI: https://doi.org/10.4028/p-8fyRR4
• Online since: October 2025
• Authors: Yu Chen Sun*, Chen Xiang Wang
• Keywords: Asymmetric Hybrid Supercapacitor, Energy Storage, MrGO, TNCS

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