Stretchable Electrode Composed of Carbon Nanotube-SBS Hybrid Film and Its Application on Biosensor

In the present study, a stretchable hybrid film electrode composed of carbon nanotube (CNT) and styrene-butadiene-styrene block copolymer (SBS) was described. With certain tensile loading, the stretchable electrode will elongate. The as-prepared electrode could keep conductivity when the tensile strain is up to 20%. The resistivity of the stretchable electrode changes slowly and linearly with the elongation, showing that the electrode is suitable to be used as flexible and stretchable electrochemical platforms. Glucose is chosen as a model analyte to measure the electrochemical properties of the corresponding biosensor. The glucose biosensor could keep 86% of its responding signal in one month, showing significant long-term stability. The prepared stretchable biosensor is suitable to be equipped on new generation of wearable devices which can track the biochemistry signals such as sweat glucose, cholesterol and lactate, etc.