| Summary: | Supercapacitor plays a crucial role in energy storage application, relying on its superior
electrochemical performance, which is mainly determined by the electrode material used.
Research on alternatives for pure carbon as the electrodes in the electric double-layer
capacitor (EDLC) are carried out continuously in recent years, one typical solution is the
utilization of High-entropy alloys (HEAs). HEAs are a relatively new class of materials that
consist of multiple metallic elements in roughly equal proportions, which exhibit unique
properties mechanically, electrically, and chemically. This project aims to synthesize an
asymmetric solid supercapacitor using high-entropy alloy nanoparticles (HEA-NPs)
decorated carbon cloth and an active carbon paper. The HEA-NPs consisted of 5 metallic
elements: Chromium, Cobalt, Nickle, Manganese, and Zinc (CrCoNiMgZn) were synthesized
on the carbon cloth using a pulsed laser irradiation (PLI) method, resulting in a highly
conductive and porous nanocomposite electrode. The electrochemical performance of the
HEA/carbon electrode was characterized, showing expected specific capacitance, superior
rate capability as well as promising cycling stability. Lastly, the limitations of the study were
identified, and recommendations for further exploration were suggested. This project is to
provide a reference for the synthesis of HEA-NPs using PLI, insights into alternatives for
electrode materials of EDLC, as well as the potentiality of HEA-NPs in sustainable energy
storage applications.
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