Abstract
Bipolar electrochemistry emerges as an appealing technique for gradient surface fabrication thanks to the controllable potential distribution on bipolar electrodes (BPEs) in a wireless manner [1]. Here we report a BPE array named the single-electrode electrochemical system (SEES) [2] for the high-throughput electrosynthesis of gradient polypyrrole (PPy) films via electropolymerization. The SEES consists of a plastic board with holes attached to an indium-tin oxide (ITO) electrode to create multiple microelectrochemical cell arrays. Benefiting from this technique, the effects of various electrolysis conditions on film growth, such as applied voltage, electrodeposition time and electrolyte, etc., were systematically investigated. The length, thickness, surface morphology, and wettability, of the obtained PPy films were investigated [3]. The SEES provides a straightforward comparison of experimental results and hence facilitates the condition screening process.
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