The fabrication of functional electrochemical devices via 3D printing often faces challenges related to the inherent low activity of freshly printed conductive filaments. This study investigates the enhancement of electrochemical performance in 3D-printed nanocarbon/poly(lactic acid) (PLA) electrodes through thermal activation. The process involves pyrolytic removal of the PLA matrix at 350 °C under ambient air, transforming the original composite into a porous 3D carbon nanostructure while preserving the initial printed geometry. Optical and scanning electrochemical microscopy (SECM) analyses confirm that the activated structure maintains its shape, with an exposed cross-sectional area increasing from 1 mm² to 2 mm² due to structural swelling and resin infiltration. SECM feedback mode imaging reveals a highly conductive surface, while substrate generation/tip collection (SG/TC) mode demonstrates extensive electrochemical activity across the entire surface, indicating effective exposure of active carbon sites.UBE2E3 Antibody Protocol A cyclic voltammetry (CV) analysis of the activated cross-section shows a peak-to-peak separation of 142 mV for ferrocene methanol (FcMeOH), which is comparable to other activated carbon systems and confirms reversible redox behavior.SHB Antibody medchemexpress The SECM data, supported by histogram and binary image analysis, indicate that over 90% of the surface exhibits high electrochemical activity, with minimal inactive regions.PMID:34818604 This improvement is attributed to the complete removal of insulating PLA, exposing a continuous network of carbon nanotubes previously encapsulated within the polymer. The resulting porous architecture offers a high surface area-to-volume ratio, ideal for applications such as electrocatalysis and energy storage. Additionally, the process is simple, scalable, and compatible with standard FDM workflows, requiring no post-printing chemical treatments or complex modifications. The findings demonstrate that thermal activation is a reliable method for unlocking the full electrochemical potential of 3D-printed conductive composites. Moreover, this approach enables the creation of custom-shaped current collectors and catalytic platforms tailored to specific device geometries. By combining precise 3D printing with post-processing activation, researchers can achieve both structural complexity and superior electrochemical functionality. The study further validates the utility of SECM in mapping localized activity across heterogeneous surfaces, providing critical insights into the spatial distribution of reactive zones. These results not only advance the field of printable electrochemistry but also lay the foundation for future innovations in smart, multifunctional devices where form and function are co-designed through integrated processing strategies.MedChemExpress (MCE) offers a wide range of high-quality research chemicals and biochemicals (novel life-science reagents, reference compounds and natural compounds) for scientific use. We have professionally experienced and friendly staff to meet your needs. We are a competent and trustworthy partner for your research and scientific projects.Related websites: https://www.medchemexpress.com
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