Electrical energy storage is an ever growing and important
area
of research in a modern technological world. The quest for energy
storage materials is always in the limelight of research for the replacement
of conventional environmentally toxic metal-based redox-active materials
by organic molecules which provides an alternative for rechargeable
batteries. Zinc/magnesium-based conducting polymer batteries attracted
significant attention due to their high abundance, safety, and cost-effectiveness
compared with lithium ion batteries (LIBs). This Review lays out an
extensive overview of metal anodes like zinc/magnesium with conducting
polymer cathode materials that possess high conductivity and theoretical
capacitance. In addition, the complete redox behavior of polymer cathodes,
the mechanism, the anode behavior in acidic and alkaline media, the
effect of different electrolyte uses and drawbacks, the binders, and
the housing of these batteries have been reviewed in detail. The socioeconomic
impact, problems associated with dendrite, and passive layer formation
with zinc/magnesium polymer cathode batteries, as well as future perspectives,
will give a complete overview for the general reader as well as for
experts working in these fields.