Abstract
In this paper, we show the preparation and characteristics of new 3D-printed porous carbons obtained by stereolithography (SLA) of a precursor resin followed by heat treatment. Their physical and textural properties can be tuned by using chemically modified biobased aromatic precursors as monomers. Thus, vanillin and polyflavonoids such as mimosa tannins can be used together as building blocks for SLA materials when functionalized with methacrylate groups by a solvent-free technique and mixed with a photosensitive resin. Adjusting the photosensitive formulations led to high thermal stability and an increase in carbon yield of up to 27%. The corresponding dense porous carbon materials showed outstanding mechanical properties, far exceeding those of other SLA-printed carbons and carbon foams, and a very low surface area, which improves their oxidation resistance compared to acrylate–tannin-derived carbon or activated carbons. This new approach to architecturally engineered carbons with tailored properties can therefore be used for the promising design of catalyst supports or sodium-ion batteries.
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