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Abstract

Systems and methods are presented for fabricating conductive protein-based yarns to produce textile-based supercapacitors (TSCs). Conductive wool yarns are created by coating wool yarn with Ti₃C₂T_x MXene flakes, or by coating wool yarn in MXene@conductive-polymer composite material, such as MXene@polypyrrole (PPY) or MXene@polyaniline (PANI). In some examples, the conductive polymer (e.g., polypyrrole (PPY) or polyaniline (PANI)) is polymerized in the presence of MXene flakes to yield conductive-polymer-coated MXene flakes (MXene@conductive-polymer), and then this material is then used to coat wool yarn to yield a conductive protein-based yarn. MXene materials offer a high conductivity, but tend to oxidize quickly, while conductive polymers have a lower conductivity, but are more chemically stable and less likely to oxidize. As such, it is presently recognized that, by combining these materials, a chemically stable and highly conductive composite material is formed that can be used to coat yarns to make TSCs.

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