A flexible multifunctional electrode based on conducting PANI/Pd composite for non-enzymatic glucose sensor and direct alcohol fuel cell applications

In this work, we fabricated a flexible, multifunctional polyimide (PI)/Au-polyaniline (PAN)/Pd nanocomposite electrode with excellent electrochemical properties. Structural geometry, morphological views, and functional group analyses indicated that the physicochemical performance of is based on strong synergistic metal-polymer interaction between conducting PAN Pd, which ensured high conductivity, rapid response, electron transfer rate through more electroactive spots available in nanocomposite. Here, demonstrated PI/Au-PAN/Pd electrodes can be successfully used for biomedical sensing glucose, as well energy conversion application, using oxidation alcohols such methanol ethanol fuel cells. The analysis shows flexible sensor (PI/Au-PAN/Pd) has ultra-high sensitivity 2140 μA/μM.cm2 low detection limit 0.3 μM glucose. Also, interference analysis, reproducibility, stability studies reveal its capability glucose sensing. Furthermore, also demonstrates prominent electrocatalytic behavior to electrooxidation an alkaline medium current density 3 mA/cm2 0.96 along good cyclic stability. Thus, efficient electrocatalyst stability, practicability, reproducibility claims potential applications flexible/wearable healthcare diagnostics systems alternative devices.