Gel-like polypyrrole based artificial muscles with extremely large strain

The investigation of gel-like polypyrrole based artificial muscles with extremely large strain was presented. The high stretchable and powerful PPy actuators exhibiting the strain up to 15% at 0.1 MPa and 7% at a considerably large load of 5 MPa were prepared. The electrochemical polymerization of pyrrole was performed in a one-compartment two-electrode cell at 0°C for 6h. The electrochemical strains of TFSI-doped PPy, prepared with tetrabutylammonium salt (TBATFSI), cycled at 2 mVs-1 and 0.2 mVs-1 in aqueous LiTFSI solution were 20.1% and 26.5%, respectively.