A novel procedure for fabricating flexible screen-printed electrodes with improved electrochemical performance

2016 Global Conference on Polymer and Composite Materials

材料科学;化学

Du, C.X.^1 ; Han, L.^1,2 ; Dong, S.L.^1 ; Li, L.H.^1 ; Wei, Y.^1,2

Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing

102600, China^1

Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, Beijing

100084, China^2

关键词: Chemical treatments;    Electrochemical behaviour;    Electrochemical performance;    Electron transfer rates;    Hydrophilic surfaces;    Hydrophobic surfaces;    Peak-to-peak separation;    Screen printed electrodes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/137/1/012060/pdf
DOI  :  10.1088/1757-899X/137/1/012060

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Screen-printed electrodes (SPEs) with improved electrochemical performance were fabricated in this study. The SPEs on hydrophilic surface of polyethylene ethylene terephthalate (PET) film showed better electrochemical behaviour than that on hydrophobic surface. The optimal condition of pretreating fresh SPEs was that alternately dealt with chemical treatment (soaked in 3M NaOH solutions for 1h) and high temperature curing (heated at 120 °C for 15 min) for two times. After chemical treatment, the electrochemical performance of self-made SPEs was better than the commercial three electrodes system. By analyzing cyclic voltammetry (CV) curves, we found that the oxidation peak currents and peak to peak separation reached 407.65 μA and 111.16 mV, which mean the sensitivity and electron transfer rate improved 1.9 times and 3.8 times compared with fresh SPEs, and 2 times and 3 times compared with commercial DropSens (DS) electrodes. The obtained SPEs were stable, convenient and inexpensive, which could be extensively applied for developing novel electrochemical sensors.