Designing high-performance polyaniline @MoS 2 @AC hybrid electrode for electrochemical–based Next-generation battery-supercapacitor hybrid energy storage device and hydrogen evolution reaction

• Published in: Physica scripta 2024-03, Vol.99 (3), p.35938
• Main Authors: Alsaiari, Mabkhoot, Imran, Muhammad, Afzal, Amir Muhammad, Mumtaz, Sohail, Algethami, Jari S, Harraz, Farid A
• Format: Article
• Language: English
• ISSN: 0031-8949; 1402-4896
• DOI: 10.1088/1402-4896/ad25d6

Polyaniline (PANI), a conducting polymer, has attracted the attention of researchers as a potential candidate due to its higher capacitance and outstanding electrochemical reversibility. In this research, we used the hydrothermal approach to synthesize MoS 2 @PANI hybrid electrode material that may overcome the low cyclic stability of PANI. The composite material MoS 2 /PANI (with M/P-25/75 wt%) demonstrated a specific capacity (Qs) with the amount 1087.5 C g −1 or 1812.5 F/g, much more advanced than reference samples due to the hybrid structural integrity and enhancement of the specific surface area of MoS 2 and PANI interaction through electrostatic repulsion and hydrogen bonding. The asymmetric device (MoS 2 /PANI-25/75wt%//AC) demonstrated an extraordinary value of a Qs of 361 C g −1 over pure PANI. This novel supercapattery device showed a supreme high energy density of 65.33 Wh kg −1 and a power density of 1668.83 W/kg. Further, the hybrid electrode is used for the hydrogen evolution reactions and obtained the value of over potential is 43 mV. A small value of the Tafel slope of 39 mV/dec is observed with high stability. The improved energy storage capabilities of MoS 2 /PANI hybrid electrodes with multiple applications provide a new paragon to design unusual and fast multi-functional devices.