▎ 摘　　要

This research approach has been used to enhance and investigate the electrical performance of graphene-based textiles by using an exhaust dyeing method. We developed a highly flexible and wearable e-textile for smart clothing in general and electrocardiogram (ECG) biomedical applications in particular. One step dyeing and reduction of graphene oxide on the textile substrate was accomplished simultaneously at 90 degrees C in 2 h. After one bath dyeing and reduction of GO, the knitted fabric was coated with conducive polymer PEDOT: PSS via dip coating as a layer by layer (LBL) technique. The resultant knitted textile electrode showed a reduction in sheet resistance from 2.5 M Omega similar to 140K Omega with increasing (1 similar to 10) dyeing cycles. The electrical conductivity was further the improved, as sheet resistance was decreased from 180K Omega similar to 120 Omega when coated with PEDOT: PSS as compared to pristine PEDOT: PSS and rGO. The results showed that washing has an adverse effect on electrical conductivity. The textile electrode was stable up to 20 similar to 30 washing and 120 similar to 130 bending cycles. The developed electrodes were used as an ECG electrode, with low impedance and higher contact to human skin. The textile electrode showed the enhanced performance to detect the high-quality electrocardiograms (ECG) signals for heart rate in both we and dry conditions.