Conductive polymer hydrogels combine the conductivity of conductive polymer with the high extensibility and adjustable flexibility of hydrogels,making them ideal materials for the preparation of wearable electronic devices.Various conductive polymers have been used to prepare hydrogels by now.Among them,polypyrrole is one of the widely studied and applied conductive polymers because of its excellent conductive properties and biocompatibility.Three preparation methods of polypyrrole conductive hydrogels were described in detail,and the applications of polypyrrole conductive hydrogels in sensors,energy storage materials and biomedicine fields were introduced.The current issues and proposed solutions were put forward in order to design polypyrrole conductive hydrogels with excellent performance.
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