Laser induced flexible graphene electrodes for electrochemical sensing of hydrazine

In this work, electrochemical sensing of hydrazine is reported using laser induced flexible graphene as the sensing electrode. The electrodes were fabricated by simple lasing and patterning of polyimide films at ambient conditions. Cyclic voltammetry technique was used for electrochemical sensing of hydrazine. These sensors exhibited linear response to change in concentration of hydrazine. The sensor had a sensitivity of up to 115% at 0.5 mM hydrazine, limit of detection of 70 mu M, and was reliable after 500 bending cycles. Overall, the hydrazine sensor exhibited good reproducibility, sensitivity, selectivity, lifetime, and is promising for developing low cost flexible hydrazine sensor. (C) 2019 Elsevier B.V. All rights reserved.