Polypyrrole based cathode material for battery application

Rechargeable energy storage devices (ESD) are becoming progressively momentous to our community, and conducting polymer (CPs) material is a core element of this device. With the rise in demand for high-powered, increased protection, economical, and environmental sustainability, substituting traditional redox-active material with conducting polymer is a favourable alternative for the rising generation of rechargeable ESD. This paper reviews polypyrrole and its modification as a bright cathode material for AZINs, SDIBs, LIBs, PIBs, and LISBs. Using the electrochemical polymerization, solvothermal technique, epitaxial polymerization, vapour polymerization, and oxidative polymerization, the Polypyrrole (PPy) composite can be fabricated to enhance its cyclability, current density, discharge capacity, low-temperature property and stop the loss of electrons in the electrolyte. The composite structure of PPy with a different class of material such as inorganic compound, metal sulfide, metal oxide, and alloys can be fabricated. Also, the other type of element is combined with PPy to improve their electrical and catalytic activity. This review highlights the PPy composite material in terms of cyclical performance, discharge capacity, and reversible capacity with different current densities. This review also highlights the forthcoming perspective of polypyrrole composite as up-and-coming cathode material for a higher-grade application.