“…Within this type of materials, polypyrrole (PPy) has been one of the most studied conductive polymers due to its high electrical conductivity, long‐term ambient stability, good biocompatibility, low cost and facile synthesis by chemical or electrochemical polymerization. [ 8–17 ] PPy has been used for many commercial applications such as biosensors, [ 13,18 ] gas sensors, [ 19,20 ] microactuators, [ 21 ] transducers, [ 22 ] antistatic coatings, [ 23 ] solid electrolytic capacitors, [ 24,25 ] polymeric batteries, [ 26 ] solar cells, [ 27,28 ] wearable electronics, [ 29,30 ] electromagnetic interference shielding, [ 31–33 ] corrosion protection, [ 8,34,35 ] etc. In addition, PPy has also been applied in fuel cells as catalyst supports for direct methanol fuel cells (DMFCs) [ 36 ] and proton‐exchange polymer electrolyte membrane fuel cells (PEMFCs), [ 37 ] as membranes for DMFCs [ 38 ] and as anodes for microbial fuel cells.…”